Re: [CentOS] IPv6: ADDRCONF(NETDEV_UP): link is not ready after upgrading to 7.6

2019-01-01 Thread Luigi Rosa

Gordon Messmer wrote on 30/12/2018 20:59:

Hi, after upgrading to 7.6, kernel 3.10.0-957.1.3.el7.x86_64, at boot instead 
of the GUI login screen I got two lines like this: 


The output you see is probably unrelated to the problem.  Check the output of 
"systemctl status gdm" and /var/log/Xorg.0.log


Thank you! Your suggestion has been very helpful.

systemctl status gdm  showed GDM running as expected, but /var/log/Xorg.0.log 
had many error lines like this:


(EE) FBDEV(0): FBIOPUTCMAP: Invalid argument

The solution proposed in https://www.centos.org/forums/viewtopic.php?t=55418 was 
not applicable because fbdev is correctly installed.


Widening the search I found this: 
https://lists.debian.org/debian-x/2014/07/msg00010.html


The solution was to create a file  /etc/X11/xorg.conf.d/99-fbdev-fix.conf with 
this content:



Section "Device"
Identifier  "Card0"
Driver  "fbdev"
EndSection



And restart.



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[CentOS] IPv6: ADDRCONF(NETDEV_UP): link is not ready after upgrading to 7.6

2018-12-25 Thread Luigi Rosa
Hi, after upgrading to 7.6, kernel 3.10.0-957.1.3.el7.x86_64, at boot instead of 
the GUI login screen I got two lines like this:


IPv6: ADDRCONF(NETDEV_UP): em1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): em1: link is not ready

The server is accessible via ssh on IPv4


Server:  DELL PowerEdge T 110 II

NIC: Broadcom, driver tg3, lspci -v:
04:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5722 
Gigabit Ethernet PCI Express

Subsystem: Dell Device 04de
Flags: bus master, fast devsel, latency 0, IRQ 33
Memory at c4a0 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at  [disabled]
Capabilities: [48] Power Management version 3
Capabilities: [50] Vital Product Data
Capabilities: [58] Vendor Specific Information: Len=78 
Capabilities: [e8] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number f8-db-88-ff-fe-fe-b4-57
Capabilities: [16c] Power Budgeting 
Kernel driver in use: tg3
Kernel modules: tg3

dmesg says:
[8.075141] tg3 :04:00.0 em1: Link is up at 1000 Mbps, full duplex
[8.075153] tg3 :04:00.0 em1: Flow control is off for TX and off for RX
[8.075174] IPv6: ADDRCONF(NETDEV_CHANGE): em1: link becomes ready




IPv6 is configured as IGNORE in NetworkManager.

I tried the following with the same result:

net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.all.disable_ipv6 = 1

and reboot, no effect


Setting an automatic IPv6 address: no effect.



Suggestions?


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Re: [CentOS] Noise Cancellation of Server Noise

2016-12-26 Thread Luigi Rosa

geo.inbox.ignored wrote on 26/12/2016 07:22:


not totally true.

there is a very easy way to change fix to variable speed. BTDT.


1U and 2U HP/Dell servers use variable speed fans, you hear them at full speed 
when you power the server on.


The problem is that the noise of an "idle" 1U or 2U server is far greater than 
the noise of a 5U server for three main reasons.


1. The small servers have less airflow space, so if you want to move (say) 1 
cubic meter of air per hour you have less space, so you must increase the speed 
of the air


2. The fans are smaller, so the blades must turn faster to move the same amount 
of air


3, Small servers have smaller dissipating area/volume, so to exchange the same 
amount of heat you must increase the airflow speed.




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Re: [CentOS] Noise Cancellation of Server Noise

2016-12-25 Thread Luigi Rosa

H wrote on 24/12/2016 22:43:

Has anyone come across a device that could cancel out the noise from servers, 
ie. the fan noise? I have  a server rack near my office and would like to see 
if i can decrease the noise level. It would seem to me that the steady drone of 
the fans could be cancelled out to a large extent.


It's probably too late for you, but the best solution is to buy office-grade 
servers instead of datacentre-grade servers


HP and Dell (don't know othjer brands so well) have two kinds of servers: 
"dense" rack-only servers (tipically 1U or 2U if we are talking about single 
servers and not Apollo or VRTX or blade) and "office type" servers, 4U to 6U.


Let's put aside Apollo, VRTX, and other blade, they are out of scope.

Dnese servers are extremely noisy because they have a lot of small fans turning 
relatively at high speed. This kind of server cannot be converted to free 
standing "tower" form factor.


The other kind of server is sold both in "tower" and rack form factor; they are 
bigger the airflow is forced by bigger fans that can turn to a lower speed to 
exchange the heat.


If the noise is produced by the rack fans, use, as someone else suggested, 
variable speed fans regulated by a temperature sensor.


In essence, you can greatly lower the noise "by design", but if you already have 
the equipment it can be too late.



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Re: [CentOS] Server turns off unexpectedly

2016-12-12 Thread Luigi Rosa

Gary Stainburn wrote on 12/12/2016 11:50:


My priblem is that twice now it has turned itself off, the last time being at
7:40am today.  There is nothing I can find in the logs prior to it going off,
just the normal start-up entries when it's turned back on.


If the PC turns off and stays off it could be a power supply issue

If you cannot put the old disk back, try to use another power connector for the 
hard disk


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[CentOS] wpa_supplicant service script marked executable

2016-03-05 Thread Luigi Rosa

I just installed a fresh CentOS 7 with "minimal" setup.

Upon restart of systemd I get this warning:

Configuration file /usr/lib/systemd/system/wpa_supplicant.service is marked 
executable. Please remove executable permission bits. Proceeding anyway.



Probably the exec bit is no longer needed.


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Re: [CentOS] apache mysterious 404 error

2015-08-27 Thread Luigi Rosa

Tim Dunphy wrote on 28/08/2015 00:18:


  And made sure that the document root setup in the vhost for the site I'm
serving has permissions for the apache user. Yet some of the files are
throwing a 404 error in a browser even tho they are clearly present and
accounted for on the file system.


Put

CheckSpelling on
CheckCaseOnly on

in vhost or Apache configuration

You have to enable mod_speling in /etc/httpd/conf.modules.d/00-base.conf


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[CentOS] CentOS 7 - Limiting rescue kernel imeges

2015-08-23 Thread Luigi Rosa
In order to keep only 3 kernel images on a CentOS 7 I edited /etc/yum.conf and I 
put


installonly_limit=3


This parameter works for standard kernel images, but does not work for rescue 
images:


$ ls -al /boot/vmlinuz*

-rwxr-xr-x 1 root root 5027376 May 13 20:46 
/boot/vmlinuz-0-rescue-2554e2ffad84452bb07401bed0a61089
-rwxr-xr-x 1 root root 3084288 Jun 27 06:42 
/boot/vmlinuz-0-rescue-2be43759d5354c5a84125dea5b4a02ab
-rwxr-xr-x 1 root root 5029136 Mar 18 05:18 
/boot/vmlinuz-0-rescue-3871136569fb49cb934a276af5e09b32
-rwxr-xr-x 1 root root 5029008 Mar 31 19:54 
/boot/vmlinuz-0-rescue-ca5579e88a014362836fa90f4aa34248
-rwxr-xr-x 1 root root 5029744 Aug  6 16:31 
/boot/vmlinuz-0-rescue-e2ae4db2b909488088e78ac4064661d2

-rwxr-xr-x 1 root root 5029744 Aug  6 03:15 
/boot/vmlinuz-3.10.0-229.11.1.el7.x86_64
-rwxr-xr-x 1 root root 5027376 May 13 12:15 
/boot/vmlinuz-3.10.0-229.4.2.el7.x86_64
-rwxr-xr-x 1 root root 5029200 Jun 24 00:15 
/boot/vmlinuz-3.10.0-229.7.2.el7.x86_64


Is there a way to keep rescue images within a certain limit?


Thank you in advance

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Re: [CentOS] CentOS 7 - Limiting rescue kernel imeges

2015-08-23 Thread Luigi Rosa
Nicolas Thierry-Mieg wrote on 24/08/2015 00:24:

 installonly_limit=3


 This parameter works for standard kernel images, but does not work for
 rescue images:

 snip
 Is there a way to keep rescue images within a certain limit?
 
 man yum.conf , search for installonlypkgs (that's on centos6, might vary in 7)

According to man page:

/*
installonlypkgs List of package provides that should only ever be installed,
never updated.
*/

This is not the case for two reasons: (1) I want to install rescue kernel image
and (2) there is no rpm package for rescue kernel




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[CentOS] LibreSSL

2015-08-07 Thread Luigi Rosa
With 2.2.2 release 
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.2.2-relnotes.txt is there 
a paln to provide a drop-in replacement of OpenSSL?




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Re: [CentOS] Systemd

2015-05-24 Thread Luigi Rosa

Kirk Bocek wrote on 24/05/2015 04:37:

So I've built my first CentOS 7 host and am learning all the new ways of doing
things. I setup and enabled ntpd but after a reboot I get:


In CentOS 7 is bettere to use chrony, here's an howto

http://linoxide.com/linux-command/chrony-time-sync/


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[CentOS] CPAN dependency on CentOS 7

2014-10-20 Thread Luigi Rosa
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Una a CentOS 7 with minimal install if I install perl-CPAN the first time I
execute cpan to download a mduel, the automatic configuration of CPAN fails
for missing Time/HiRes

The package perl-Time-HiRes should be installed as a dependency of perl-CPAN

The exact error is:

Would you like me to automatically choose some CPAN mirror
sites for you? (This means connecting to the Internet) [yes]
Trying to fetch a mirror list from the Internet
Fetching with HTTP::Tiny:
http://www.perl.org/CPAN/MIRRORED.BY

Looking for CPAN mirrors near you (please be patient)
Can't locate Time/HiRes.pm in @INC (@INC contains: /usr/local/lib64/perl5
/usr/local/share/perl5 /usr/lib64/perl5/vendor_perl
/usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/sha
re/perl5 /root) at /usr/share/perl5/Net/Ping.pm line 313.




Ciao,
luigi

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Re: [CentOS] CPAN dependency on CentOS 7

2014-10-20 Thread Luigi Rosa
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Reindl Harald wrote on 20/10/2014 17:52:

 that may be true but you need to report that *upstream* CentOS is a package
 for package and bug for bug clone
 
 https://bugzilla.redhat.com/enter_bug.cgi

Been there, done that

https://bugzilla.redhat.com/show_bug.cgi?id=1154741




Ciao,
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Re: [CentOS] Run script at startup

2014-08-20 Thread Luigi Rosa
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Alan Holt wrote on 20/08/2014 15:07:

 I just install the newest version of Centos 7 and I am a bit disappointed 
 with new /etc/rc/local file I found that it's not usable anymore.

You can re-enable it with this command:

systemctl enable rc-local.service

that enables the Unit /etc/systemd/system/rc-local.service


Once you are familiar with systemd it is better to create a custom Unit for
your purposes rather than using old rc.local




Ciao,
luigi

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Re: [CentOS] VMware restricting to 3GB RAM

2014-01-19 Thread Luigi Rosa
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Hersh Parikh said the following on 20/01/2014 07:17:

 I am running VMware player on CentOS 5.4 and its working fine. However it
 does not allow me to increase the RAM more than 3GB.  It keeps throwing
 error stating- Requested memory size is greater than allowed maximum of
 3072 MB. Could not initiate memory hot plug.
 
 I understand from few threads that 32bit OS has this kind of limitation but
 I am able to understand why I am seeing this issue when I am using 64bit OS
 and VMware player is also for 64bit.

Check this VMware article and see if you fall within the limitations described:

Virtual machine memory limits and hardware versions (1014006)
http://kb.vmware.com/selfservice/microsites/search.do?language=en_UScmd=displayKCexternalId=1014006



Ciao,
luigi

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Re: [CentOS] Why does 'mysql' user has /bin/bash shell?

2014-01-10 Thread Luigi Rosa
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Warren Young said the following on 10/01/2014 21:41:

 I have one from March 2013, and it *does* have /bin/bash as user mysql's 
 shell.

The June 2013 installation with /sbin/nologin COULD have been installed with a
old DVD (say CentOS 6.2) and updated via Internet (I really don't remember).
It's my home server, I rebuilt it last summer.

The latest with /bin/bash is a CentOS VM hostd at www.cloudatcost.com

Nearly on the same period I created a VM at Hetzner.de, and it has /sbin/nologin

The funy thing is that both cloudatcost.com and hetzner.de are two VMs
provided with the Minimal installation and I installed mysql-server package
from the repositories. I am not sure if I chsh-ed the mysql account


Anyway, why assign an interactive shell to mysql???



Ciao,
luigi

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Re: [CentOS] Why does 'mysql' user has /bin/bash shell?

2014-01-09 Thread Luigi Rosa
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Mihamina Rakotomandimby said the following on 09/01/2014 10:27:

 Default MySQL installation on CentOS sets /bin/bash as shell.

I checked in my CentOS 6 installations.

Only one (the latest) has this issue, so it could be something added/modified
in the lastest months.

Other installations starting from June 2013 (included) does NOT have this
issue and the shell of mysql user is /sbin/nologin



Ciao,
luigi

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Re: [CentOS] Elliptic curve on Centos 6.x

2014-01-03 Thread Luigi Rosa
Ahmed Hassan said the following on 03/01/2014 13:47:

 There is a huge difference between asymmetric encryption and 
 cryptographically secure pseudo-random number generator. EC is secure, the
  default random number generator on Linux is /dev/urandom. It does not use
  the backdoored NSA PRNG.

The algorythm behind /dev/urandom is not robust
(http://eprint.iacr.org/2013/338.pdf)

With headless and/or virtual servers the issue is even bigger because Linux
could not be able to collect enough entropy to seed /dev/urandom

Some entropy generator daemon such as timer_entropyd
(http://www.vanheusden.com/te/), haveged (http://www.issihosts.com/haveged/)
or randomsound (http://www.digital-scurf.org/software/randomsound) can be used
to generate more entropy



Ciao,
luigi

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Re: [CentOS] Elliptic curve on Centos 6.x

2014-01-03 Thread Luigi Rosa
Timothy Murphy said the following on 03/01/2014 14:20:

 Is this a meaningful statement? How do you measure the entropy of a seed
 (which I take to be a string)? And if you can, is it true that you can
 decrypt a string with low entropy?

The mathematic behind a PRNG (or DRNG to use NIST terminolgy) + Elliptic Curve
falls beyond my comprehension, so I have to take for granted what experts say.

The link to PDF I qoted in my previous message goes deep in detail, you can
refer to that paper if you need more informations.

 Nb What you say may be perfectly valid, I'd just like to know exactly what
 it means, if indeed it has a mathematical meaning.

In essence it means that if an algorythm that builds its foundations on the
fact that each new number of a sequence is not predictable, when that sequence
generates predictable numbers, the algorythm fails.

There are some models that define or analyze if a sequence is randomic you
can google around or take a look at http://www.issihosts.com/haveged/ais31.html

Mind that you can end up with a big headache :)




Ciao,
luigi

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Re: [CentOS] oom situation

2013-12-30 Thread Luigi Rosa
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Oguz Yilmaz said the following on 30/12/2013 09:02:
 I have continous oompanic situation unresolved. I am not sure system fills
 up all the ram (36GB). Why this system triggered this oom situation? Is it
 about some other memory? highmem? lowmem? stack size?

Had a similar issue on some CentOS servers and solved by changing the memory
overcommit [1] strategy of Linux kernel.

CentOS via its upstream sets /proc/sys/vm/overcommit_memory [2] to zero,
better to set il to 2 and play with /proc/sys/vm/overcommit_ratio (some say
that it should be 50, other 80)

Try to put this in /etc/sysctl.conf and see if anithing changes

vm.overcommit_memory = 2
vm.overcommit_ratio = 80

Other useful links:
http://www.hskupin.info/2010/06/17/how-to-fix-the-oom-killer-crashe-under-linux/
http://www.win.tue.nl/~aeb/linux/lk/lk-9.html#ss9.6
http://www.dbasquare.com/2012/05/31/mysql-oom-killer-and-everything-related/




Ciao,
luigi

[1] http://opsmonkey.blogspot.it/2007/01/linux-memory-overcommit.html
[2] http://www.kernel.org/doc/man-pages/online/pages/man5/proc.5.html


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Re: [CentOS] MySQL stale socket

2013-12-20 Thread Luigi Rosa
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Paul Heinlein said the following on 20/12/2013 16:50:
 On Fri, 20 Dec 2013, Luigi Rosa wrote:
 
 I can confirm that this is a bug added to the latest releases og MySQL.
 
 I tested it only in VM (both VMware and XEN).
 
 How to reproduce.
 
 * start a CentOS VM with MySQL * abruptly turn the VM off (not shutdown,
 of course) * restart VM * MySQL starts but the connections via
 /var/lib/mysql/mysql.sock do not work
 
 I've seen this too, and not just on VMs.

A friend just told me that he saw this issue recently on a Debian server, so
is definitively a MySQL problem.



Ciao,
luigi

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Tech: Yes.
Customer: My computer isn't working right.
Tech: Yes. You already told me that.
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Re: [CentOS] MySQL stale socket

2013-12-19 Thread Luigi Rosa
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I can confirm that this is a bug added to the latest releases og MySQL.

I tested it only in VM (both VMware and XEN).

How to reproduce.

* start a CentOS VM with MySQL
* abruptly turn the VM off (not shutdown, of course)
* restart VM
* MySQL starts but the connections via /var/lib/mysql/mysql.sock do not work




Jake Shipton said the following on 16/12/2013 11:12:
 On Mon, 16 Dec 2013 10:51:54 +0100 Luigi Rosa li...@luigirosa.com wrote:
 
 
 I have a server with a faulty power supply that resets the server every
 4/5 hours.
 
 While I wait for the supplier to change the PS, I am facing an issue with
 MySQL.
 
 When the system comes back on, mysqld script starts the daemon, but the
 connections via /var/lib/mysql/mysql.sock don't work because MySQL
 doesn't delete and recreate the stale socket.
 
 Apart from editing /etc/init.d/mysqld to force the deletion of a stale
 socket are there any other way to solve this issue?
 
 
 Thank you un advance.
 
 
 Ciao, luigi
 
 
 ___ CentOS mailing list 
 CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
 
 Hi,
 
 As a *temporary* solution you could do the following:
 
 # chkconfig mysqld off # nano /etc/rc.local Add at bottom: rm
 /var/lib/mysql/mysql.sock service mysqld start Now Save.
 
 Next time the machine boots it should remove the sock file, and then start
 mysqld.
 
 Once your PSU is fixed, remove those lines and run:
 
 # chkconfig mysqld on
 
 Job done! :-D
 
 Hope this helps.
 
 Kind Regards, Jake Shipton (JakeMS) GPG Key: 0xE3C31D8F GPG Fingerprint:
 7515 CC63 19BD 06F9 400A DE8A 1D0B A5CF E3C3 1D8F 
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Ciao,
luigi

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[CentOS] MySQL stale socket

2013-12-16 Thread Luigi Rosa
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I have a server with a faulty power supply that resets the server every 4/5
hours.

While I wait for the supplier to change the PS, I am facing an issue with MySQL.

When the system comes back on, mysqld script starts the daemon, but the
connections via /var/lib/mysql/mysql.sock don't work because MySQL doesn't
delete and recreate the stale socket.

Apart from editing /etc/init.d/mysqld to force the deletion of a stale socket
are there any other way to solve this issue?


Thank you un advance.


Ciao,
luigi

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[CentOS] MySQL stale socket

2013-12-16 Thread Luigi Rosa
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I have a server with a faulty power supply that resets the server every 4/5
hours.

While I wait for the supplier to change the PS, I am facing an issue with MySQL.

When the system comes back on, mysqld script starts the daemon, but the
connections via /var/lib/mysql/mysql.sock don't work because MySQL doesn't
delete and recreate the stale socket.

Apart from editing /etc/init.d/mysqld to force the deletion of a stale socket
are there any other way to solve this issue?


Thank you un advance.


Ciao,
luigi

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Re: [CentOS] RHEL 7 Beta is now public

2013-12-12 Thread Luigi Rosa
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Peter said the following on 12/12/2013 13:19:

 Right, but core should be just the bare minimum.  NetworkManager is 
 certainly not required to configure your network, in fact el7 runs just 
 fine without it.  Just set your ifcfg-eth0 scripts, etc, and you're good to
 go.

I think that before choosing what should be included in the minimal
installation we must define the goals of the minimal installation.

For instance the MTA is used by some programs to warn/report the SysAdmin;
this could be the reason why the standard MTA is included.


Ciao,
luigi

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You never know who might be trying to follow.
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Re: [CentOS] dovecot informational/error messages?

2013-11-22 Thread Luigi Rosa
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Timothy Murphy said the following on 22/11/2013 14:12:

 Nov 22 13:06:56 grover dovecot: imap-login: Disconnected (no auth 
 attempts): rip=192.168.2.3, lip=192.168.2.5, TLS: Disconnected
 
 every second on my CentOS-6.4 server. Is this purely an informational 
 message? Or is it an error message? And in either case, how can I stop the 
 flood of messages?

If 192.168.2.3 is a Windows host, it could be infected; had a similar issue
with one of my customers.


In any case, that log entry says that 192.168.2.3 is opening a TCP connection
to IMAP port of 192.168.2.5 and closing it without any IMAP handshake




Ciao,
luigi

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Re: [CentOS] Postfix vs Sendmail

2013-11-02 Thread Luigi Rosa
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Timothy Murphy said the following on 02/11/2013 13:57:

 Having looked into postfix/amavis a little further, it seems to me to
 involve excessively complicated processes (at least for a simple home
 server) with email going along spaghetti-like routes.

For a simple home mail server that routes all the outbound mail to ISP MTA
every software is fine, also a SMTP emulator written in Perl :)

If you are the sysadmin of MTAs on the front line and you have a lot of users
things change.

When you choose a MTA you must take in account many factors and try to avoid
religion arguments.

Among such factors:
* security
* easy (for the SysAdmin in charge, not for EVERY SysAdmin) to manage and
configure
* active support
* security
* interoperability with the other components of the mail system (user base,
IMAP/POP server, antivirus, antispam, vacation...)
* speed
* security
* log files easy to read to trace mail errors
* easy implementation of new mail protocol extension (such as TLS)


There are often some sort of mail ecosystems, that is a group of programs
(MTA, IMAP, administration tools, Webmail) that interact nicely one with 
another.

That said, choosing a MTA is not like casting a vote in a ballot, but making a
wise logical decison after an extensive analysis of the situation.


Ciao,
luigi

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[CentOS] Postfix IPv6 defaults

2013-10-09 Thread Luigi Rosa
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According to Postfix mail list [1] Postfix RPM has IPv6 enabled by default.

Postfix source code distribution has IPv6 DISABLED by default for security
reasons.

It could be better to disable IPv6 because IPv6 autoconf could break security.




[1] http://marc.info/?l=postfix-usersm=138136473706643w=2

Ciao,
luigi

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Re: [CentOS] DIMM problem

2013-04-24 Thread Luigi Rosa
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John R Pierce said the following on 24/04/2013 19:43:

 call HP, that new server should be under support contract, no?

A ProLiant G5 is all but new :)

Better buy some compatible RAM because the original HP for old servers is very
expensive.



Ciao,
luigi

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Re: [CentOS] DIMM problem

2013-04-24 Thread Luigi Rosa
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m.r...@5-cent.us said the following on 24/04/2013 19:51:

 The *memory* was new - I replaced all, I think, of the original memory. The
 server's from '09. If they had a warranty, it's well past that, and HP 
 won't chat or email without $$$.

ProLiant DL 580 servers have an integrated log.

If you boot with SmartStart CD you can run Integrated Management Log Viewer
application and see if the system has logged some event related to ECC memory.

If you find some errors about ECC memory, you have a fault memory module (the
entry in the integrated log SHOULD say what module is faulty).

If the memory module is new you should be able to get a replacement.


Ciao,
luigi

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Re: [CentOS] CentOS 6.3: libreport/abrt update problem

2013-02-01 Thread Luigi Rosa
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Johnny Hughes said the following on 01/02/2013 11:29:

 I am working this issue right now, should be fixed in about an hour.

It is, thanks.




Ciao,
luigi

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Re: [CentOS] CentOS 6.3: libreport/abrt update problem

2013-01-31 Thread Luigi Rosa
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Mogens Kjaer said the following on 01/02/2013 07:52:

 In updates, there are new packages of abrt and libreport. But yum update
 gives me: Error: Package: abrt-2.0.8-6.el6.centos.2.x86_64 (updates)

Confirmed. Same issue here.



Ciao,
luigi

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Re: [CentOS] Apache, IPv4, IPv6, virtual hosts

2012-10-16 Thread Luigi Rosa
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Maarten Elsen said the following on 15/10/12 22:10:

 Try something like this:
 
 NameVirtualHost *:80
 
 VirtualHost *:80 DocumentRoot /web/content/ipall.domain.com/html 
 Directory /web/content/ipall.domain.com/html/ /Directory 
 /VirtualHost
 
 VirtualHost [2a00:1450:4013:c00::65]:80 DocumentRoot
 /web/content/ipv6.domain.com/html Directory
 /web/content/ipv6.domain.com/html/ /Directory /VirtualHost

It does not work that way because for mixed mode you cannot use '*' in
NameVirtualHost directive

I found the solution on
http://httpd.apache.org/docs/2.2/vhosts/examples.html#mixed

You should do this:

Listen 80
NameVirtualHost 1.2.3.4

Then every name-based virtual host should be declared like this:

VirtualHost 1.2.3.4:80

And every IPv6 IP-based virtual host should be declared like this:

VirtualHost [2001:db8::beef]:80


This solution is working 'live' right now on a CentOS 6 server.



Ciao,
luigi

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My people can never forgive your people.
But I... can forgive... you.
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[CentOS] Apache, IPv4, IPv6, virtual hosts

2012-10-14 Thread Luigi Rosa
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Hi,
I have a CentOS 6 box with a single IPv6 and a /64 IPv6

I would like to have on the same box a name-based virtual host of Apache with
IPv4 and an IP-based virtual host with IPv6.

The only solution I have found so far is to run two instances of Apache, one
on IPv4 and the other on IPv6.

In your opinion, are there other solutions to this problem?


Thanks.


Ciao,
luigi

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you're gonna get your rear kicked.
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Re: [CentOS] PHP version dilemma

2012-10-05 Thread Luigi Rosa
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Todd Cary said the following on 05/10/12 18:57:

 Is there a safe way to upgrade PHP to 5.2x?

rpm -q --all | grep php

save the list of php packages

stop httpd

save /etc/php.ini, even if is renamed by rpm, but better have another copy,
just in case

remove all php packages

yum install php53

and then install the php53 packages you previously had

apply the customizations of /etc/php.ini including the correct timezone (some
php applications may complain if it is not set)

start httpd


I did this on 20+ servers when php53 was available. No problem at all.



Ciao,
luigi

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The basic questions of design, material and shielding, in combining a
nuclear reactor with a home boiler and cooling unit, no longer are
problems... The system would heat and cool a home, provide unlimited
household hot water, and melt the snow from sidewalks and driveways.
All that could be done for six years on a single charge of fissionable
material costing about $300.
   --Robert Ferry, U.S. Institute of Boiler and Radiator
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Re: [CentOS] PHP version dilemma

2012-10-05 Thread Luigi Rosa
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Todd Cary said the following on 05/10/12 19:45:

 However, I am not sure what you mean by
 
 and then install the php53 packages you previously had

if the output of rpm -q --all | grep php is  (for instance)

php
php-cli
php-gd
php-mysql

you should yum install this packages:

php53
php53-cli
php53-gd
php53-mysql

 Another question has to do with the GD library.  How can I tell if it is
 installed *or* is it automatically part of php35?

I can answer your question: it is not included in php53 package; you have to
install php53-gd

 Oh yes...if there is a problem with php35, are there any problems in
 reinstalling php 5.1?

If everithing fails, just remove the php53 packages, yum install the php
packages you removed and restore /etc/php.ini



Ciao,
luigi

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illumination.
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Re: [CentOS] YUM FAILED AFTER YUM CLEANALL

2012-07-19 Thread Luigi Rosa
arun kumar said the following on 19/07/2012 13:31:

 bash-4.1# yum update
 Loaded plugins: fastestmirror, refresh-packagekit
 Loading mirror speeds from cached hostfile
 Could not retrieve mirrorlist
 http://mirrorlist.centos.org/?release=6arch=i386repo=os error was
 14: PYCURL ERROR 22 - The requested URL returned error: 407
 Error: Cannot find a valid baseurl for repo: base


Check that file /etc/yum.repos.d/CentOS-Base.repo contains this:

[base]
name=CentOS-$releasever - Base
mirrorlist=http://mirrorlist.centos.org/?release=$releaseverarch=$basearchrepo=os
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6





Ciao,
luigi

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Re: [CentOS] How to rotate PHP error log - since it belongs to apache

2012-06-05 Thread Luigi Rosa
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Alexander Farber said the following on 05/06/12 15:57:

 So my question is for how to rotate it (esp. since it should be owned by
 apache user) - what do you guys use?

the standard logrotate config /etc/logrotate.d/httpd or a modified copy of it

since the rotation moves the old log and then reloads Apache, you don't have
to worry about the ownership issue



Ciao,
luigi

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[CentOS] Apache error

2012-05-22 Thread Luigi Rosa
I have a VMware virtual machine with CentOS 6 32bit updated to the lates patches

Yesterday Apache started to give this error:


[Tue May 22 09:46:07 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:08 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)
[Tue May 22 09:46:09 2012] [error] (38)Function not implemented: 
apr_socket_accept: (client socket)


Any suggestion about this?



Ciao,
luigi

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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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Bob Hoffman said the following on 22/05/12 15:01:

 (38)Function not implemented

 https://www.google.com/search?q=+%2838%29Function+not+implemented+apache


Googled for two days before writing on this list.

Everything I found was about Gentoo compilation errors, old Suse issues and
apr installation issues

Needless to say, I already reinstalled Apache and apr and disabled many modules.



Ciao,
luigi

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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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Bob Hoffman said the following on 22/05/12 15:03:
 On 5/22/2012 3:49 AM, Luigi Rosa wrote:
 I have a VMware virtual machine with CentOS 6 32bit updated to the lates
 patches
 
 Yesterday Apache started to give this error:
 
 
 [Tue May 22 09:46:07 2012] [error] (38)Function not implemented: 
 apr_socket_accept: (client socket)

 my guess is this is a non base package apache install or you changed 
 something in the settings. you updated the kernel a few days ago and now an
 issue with file locking. that is what I got from the threads I read... I
 don't know about your set up though.
 
 keep plugging away, whatever it is should be simple to fix once you find
 it.

Removed all php, apr and httpd packages

Removed /etc/httpd directory

Removed /var/www directory

Reinstalled with

yum install httpd php php-pear php-cli php-intl php-mysql php-imap
php-mbstring php-xml php-pdo php-gd php-common

Started apache (no config changes)


Still getting the same error.






Ciao,
luigi

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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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Les Mikesell said the following on 22/05/12 17:22:

 Do you have the stock apr-1.3.9-3.el6_1.2.x86_64 and 
 apr-util-1.3.9-3.el6_0.1.x86_64 packages?

Yes, the x86 version because the server has an x86 CPU:



# rpm -q --all | grep apr
apr-1.3.9-3.el6_1.2.i686
apr-util-ldap-1.3.9-3.el6_0.1.i686
apr-util-1.3.9-3.el6_0.1.i686



Ciao,
luigi

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only a religion, it is the only religion that can prove itself to
be one.
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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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m.r...@5-cent.us said the following on 22/05/12 17:23:

 You might try reinstalling apr and apr-util, which may have the functions 
 you need.

That's what I did when I removed Apache and php.

The yum install httpd installed apr for dependancy.


 I see there's also an libapreq2, but I'd install the two I just mentioned 
 first, then restart apache.


No libapreq2 file present



Ciao,
luigi

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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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bob said the following on 22/05/12 17:48:

 yea , but uninstall makes a rpmsave that likes to add the previous changes
 (or least it seems to in some cases). I usually look for rpmsave, delete
 them then reinstall just in case.


deleted /etc/httpd and /var/www after rpm -e to avoid this issue





Ciao,
luigi

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Isn't it strange, G'Kar? When we first met, I had no power...
and all the choices I could ever want. And now I have all the power
I could ever want... and no choices at all.
No choice... at all.
--Londo, The fall of Centauri Prime
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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
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Luigi Rosa said the following on 22/05/12 16:52:

 Still getting the same error.

solved installing and configuring lighttpd which is now working like a charm

Still puzzled because the VM with this issue is a clone of a VM that I have at
home which is working as expected. I cloned the same VM many times, but just
that one has problem with apache.




Ciao,
luigi

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Re: [CentOS] Apache error

2012-05-22 Thread Luigi Rosa
, 778882}, NULL) = 0
32435 ... geteuid32 resumed ) = 0
32434 write(2, [Tue May 22 19:18:12 2012] [erro..., 100 unfinished ...
32435 setuid32(48 unfinished ...
32434 ... write resumed ) = 100
32435 ... setuid32 resumed )  = 0
32434 close(8 unfinished ...
32435 epoll_create1(O_CLOEXEC unfinished ...
32434 ... close resumed ) = 0
32435 ... epoll_create1 resumed ) = 8
32434 munmap(0xcc3000, 84236 unfinished ...
32435 epoll_ctl(8, EPOLL_CTL_ADD, 3, {EPOLLIN, {u32=3037114568,
u64=3037114568}}) = 0
32434 ... munmap resumed )= 0
32435 accept4(3, 0xbfa8ccfc, [128], SOCK_CLOEXEC) = -1 EINVAL (Invalid argument)
32434 munmap(0x8ea000, 28328 unfinished ...
32435 accept4(-1, 0xbfa8ccfc, [128], 0) = -1 EINVAL (Invalid argument)
32434 ... munmap resumed )= 0
32435 gettimeofday({1337707092, 785296}, NULL) = 0
32434 munmap(0xc7, 81680 unfinished ...
32435 write(2, [Tue May 22 19:18:12 2012] [erro..., 100 unfinished ...
32434 ... munmap resumed )= 0
32435 ... write resumed ) = 100




32437 open(/proc/sys/kernel/ngroups_max, O_RDONLY unfinished ...
32436 ... close resumed ) = 0
32373 ... clone resumed child_stack=0,
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb78797b8) = 32439
32438 rt_sigaction(SIGUSR1, {0x5d45a0, [], SA_INTERRUPT},  unfinished ...
32437 ... open resumed )  = 8
32436 munmap(0xb788d000, 4096 unfinished ...
32438 ... rt_sigaction resumed {0x5d3d40, [HUP USR1], 0}, 8) = 0
32437 read(8,  unfinished ...
32436 ... munmap resumed )= 0
32373 waitpid(-1,  unfinished ...
32439 rt_sigaction(SIGHUP, {0x5d4f00, [], SA_INTERRUPT},  unfinished ...
32438 geteuid32( unfinished ...
32437 ... read resumed 65536\n, 31) = 6
32436 setgroups32(1, [48] unfinished ...
32373 ... waitpid resumed [{WIFEXITED(s)  WEXITSTATUS(s) == 1}],
WNOHANG|WSTOPPED) = 32434
32439 ... rt_sigaction resumed {0x5d3d40, [HUP USR1], 0}, 8) = 0
32438 ... geteuid32 resumed ) = 0
32437 close(8 unfinished ...
32436 ... setgroups32 resumed )   = 0




Ciao,
luigi

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Re: [CentOS] Yum update woes (perl compression)

2011-12-21 Thread Luigi Rosa
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Frank M. Ramaekers said the following on 21/12/11 21:54:


 Error: Missing Dependency: perl(Compress::Raw::Zlib) = 2.024 is needed by
 package perl-IO-Compress-2.024-1.el5.rf.noarch (installed)
 
 You could try using --skip-broken to work around the problem
 
 You could try running: package-cleanup --problems
 
 package-cleanup --dupes
 
 rpm -Va --nofiles --nodigest
 
 
 
 Is this some sort of perl install/update requirement?


Old bug.


Uninstall perl-IO-Compress (and its dependencies, note down the dependencies
you uninstall)

Do the update

Reinstall perl-IO-Compress and anything you unininstalled.





Ciao,
luigi

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to go to the left or to the right, to fire or to water. If you make
those decisions before you have even set foot upon the road, it will
take you no where... except to a bad end.
--Galen, Racing the Night
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[CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
 - Given file does not exist
Trying other mirror.
Error: failure:
repodata/48da39a2e80a927a88946a36c63414964312e64f85c7b32c3ce553d2969f46d6-primary.sqlite.bz2
from base: [Errno 256] No more mirrors to try.



I took a look in one of the mirrors of this list
(http://mirror.netcologne.de/centos/6.2/os/i386/repodata/) and the directory
is there, but there is no
8da39a2e80a927a88946a36c63414964312e64f85c7b32c3ce553d2969f46d6-primary.sqlite.bz2
file.







Ciao,
luigi

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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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Shade.GE said the following on 20/12/11 21:04:

 Can confirm that issue but currently only on my i386 boxes. The x86_64 
 updates fine to 6.2.

Confirmed.

Tried a yum clean all/yum update on an x86_64 and works as expected.
The problem is limited to i386.


Ciao,
luigi

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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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Johnny Hughes said the following on 20/12/11 21:31:

 Shade.GE said the following on 20/12/11 21:04:
 
 Can confirm that issue but currently only on my i386 boxes. The x86_64 
 updates fine to 6.2.
 
 Confirmed.
 
 Tried a yum clean all/yum update on an x86_64 and works as expected. The
 problem is limited to i386.
 
 
 Looking now.


Thanks.
Should I have to do some tests, I have a VMware CentOS 6.1 VM at hand.



Ciao,
luigi

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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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m.r...@5-cent.us said the following on 20/12/11 21:51:

 If I can suggest a thought, I'm wondering if the mirrors list for i386 has 
 either an error, or a permission problem.


Dunno; from the client point of view, the directory exists (I verified by hand
with a browser), but the file requested is not in that directory (404 error)






Ciao,
luigi

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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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Johnny Hughes said the following on 20/12/11 21:58:

 For the short term, you should be able to remark out the mirrorlist= line
 in [base] and un-remark the baseurl=mirror.centos.org line until all the
 external mirrors are caught up.
 
 Mirror.centos.org should be ok ... I have verified the file exists there.


Done that but does not work:

# yum clean all
Loaded plugins: fastestmirror, refresh-packagekit
Cleaning repos: base centosplus cr extras rpmforge updates
Cleaning up Everything
Cleaning up list of fastest mirrors
# yum update
Loaded plugins: fastestmirror, refresh-packagekit
Determining fastest mirrors
 * centosplus: ftp.hosteurope.de
 * extras: ftp.hosteurope.de
 * rpmforge: apt.sw.be
 * updates: ftp.hosteurope.de
base
| 3.7 kB 00:00
http://mirror.centos.org/centos/6/os/i386/repodata/48da39a2e80a927a88946a36c63414964312e64f85c7b32c3ce553d2969f46d6-primary.sqlite.bz2:
[Errno 14] PYCURL ERROR 22 - The requested URL returned error: 404
Trying other mirror.
http://mirror.centos.org/centos/6/os/i386/repodata/48da39a2e80a927a88946a36c63414964312e64f85c7b32c3ce553d2969f46d6-primary.sqlite.bz2:
[Errno 14] PYCURL ERROR 22 - The requested URL returned error: 404
Trying other mirror.
Error: failure:
repodata/48da39a2e80a927a88946a36c63414964312e64f85c7b32c3ce553d2969f46d6-primary.sqlite.bz2
from base: [Errno 256] No more mirrors to try.


The line I uncommented is:

baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/






Ciao,
luigi

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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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Ashley M. Kirchner said the following on 20/12/11 22:10:

 baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
 
 But did you comment out the one right above it?


Yes, of course.



Ciao,
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Re: [CentOS] yum update for CentOS 6.2

2011-12-20 Thread Luigi Rosa
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Johnny Hughes said the following on 20/12/11 21:58:

 For the short term, you should be able to remark out the mirrorlist= line
 in [base] and un-remark the baseurl=mirror.centos.org line until all the
 external mirrors are caught up.
 
 Mirror.centos.org should be ok ... I have verified the file exists there.


Mirrors are starting to synching.

I have successfully upgraded a i386 6.1 using the standard yum repository
settings.


Thank you for the quick fix!



Ciao,
luigi

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Re: [CentOS] Using an MS Access database from CentOS release 5.7 (Final)

2011-12-14 Thread Luigi Rosa
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Ron Young said the following on 14/12/11 22:21:
 @Work requires me to manipulate the MS Access database (mdb) file located
 on an XP box that is an integral part of a third party application that is
 central to the business.
 
 Does anyone have experience doing so?

I had to import some customer's data from an Access application for a new
(PHP) version of that application I wrote.

I used mdbtools http://mdbtools.sourceforge.net/

I scripted the conversion this way:

mdb-export -I -S -X -DF accessfile.mdb accesstablename  | sed
's/accesstablename/sqltablename/g' | sed 's/$/;/g'  /tmp/aaa
cat header.sql /tmp/aaa  import.sql
mysql --user=user --password=password  import.sql



header.sql file contains just this line:

use database;





Ciao,
luigi

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--Charles Darwin
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Re: [CentOS] CentOS 5.7 PHP upgrade

2011-10-10 Thread Luigi Rosa
d...@nkmo.com said the following on 10/10/11 19:13:
 I have 3 servers 2 of which run CentOS 5.5, and one with 5.7. I was able
 to easily upgrade the PHP version to PHP 5.3.8 on the CentOS 5.5 boxes but
 was thwarted on the 5.7. Does anyone have any tips for how to get PHP
 5.3.x installed on CentOS 5.7?

What's the error you get?




Ciao,
luigi

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Re: [CentOS] VMware tools 1.0.10 on Centos 6?

2011-09-02 Thread Luigi Rosa
carlopmart said the following on 02/09/11 19:19:

 Only vmware tools from ESXi 5 works for CentOS/RHEL/SL 6.x ...

Installed successfully VMware tools of VMware Workstation 7.1.4 (the same level 
as ESXi 4.1 AFIK) on CentOS 6


Ciao,
luigi

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Re: [CentOS] VMware tools 1.0.10 on Centos 6?

2011-09-02 Thread Luigi Rosa
carlopmart said the following on 02/09/11 19:44:

 OOps, my fault: vmware tools 7.x works for CentOS 6.0, but not for
 RHEL/SL 6.1 ...

works with some ceveats.

If I fire up X on a CentOS 6 VM running inside a WMware Workstation 7.1.4 64 
bit 
running on Ubuntu, sometimes the mouse status is screwed up in Ubuntu 
enviroment 
and the only solution is to restart Ubuntu.

Anyway, VMware announced that Workstation 8 will be available at the mid of 
september.



Ciao,
luigi

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Re: [CentOS] Centos 5.6 : No YUM Updates ?

2011-09-02 Thread Luigi Rosa
Florin Andrei said the following on 02/09/11 21:51:

 http://lists.centos.org/pipermail/centos-announce/2011-August/017689.html

Is there something similiar for CentOS 6?


Ciao,
luigi

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Re: [CentOS] Apache warns Web server admins of DoS attack tool

2011-08-31 Thread Luigi Rosa
m.r...@5-cent.us said the following on 25/08/11 18:33:
 Anyone have any idea how soon RHEL and CentOS will be releasing the patch
 package?

Apparently Apache just released a patch:
https://www.apache.org/dist/httpd/Announcement2.2.html

Source:
http://nakedsecurity.sophos.com/2011/08/31/apache-2-2-20-released-to-fix-dos-vulnerability/


Ciao,
luigi

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Re: [CentOS] Upgrade from CentOS 5.4 to 5.6 - 6.0 (becoming slightly OT...)

2011-07-18 Thread Luigi Rosa
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Patrick Derwael said the following on 18/07/11 08:53:

 As VM does not officially support CentOS6, can you tell me which OS version
 you have selected? (RH5, CentOS, Other 2.6 kernel?)

I choose RedHat 6

 Is there any other do's and don't I should be aware of?

Apart from a tech support that tells you lies, nothing else ;)






Ciao,
luigi

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thousand tons of spinning metal, all alone in the night. It can be a
dangerous place, but it's our last best hope for peace. This is the
story of the last of the Babylon stations. The year is 2258.
The name of the place is Babylon 5.
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Re: [CentOS] Upgrade from CentOS 5.4 to 5.6 - 6.0

2011-07-17 Thread Luigi Rosa
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Nguyen Vu Hung said the following on 17/07/11 20:19:

 Currently, the OS is installed on a vmware, and arcording to the tech staff,
 due to technical, they can not install CentOS 6 or anything other than CentOS 
 5.4 :)

I already installed CentOS (and RHEL) 6 on VMware ESXi 4.1 and VMware
Workstation 7.1.4. I already put in production a mail server with CentOS 6 on
VMware ESXi 4

The so called technical problems are a plain lie: RedHat 6 is around for many
months and VMware supports it.


Ciao,
luigi

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Re: [CentOS] Congratulations to the Centos Team for the hard work on Centos 6

2011-07-10 Thread Luigi Rosa
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Philip L Pinto said the following on 11/07/11 06:11:

 I just wanted to say Congratulations and thank you to the Centos Team for
 all of the work on Centos 6 - 

+1

Thank you guys!


Ciao,
luigi

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Re: [CentOS] Convert Filesystem to Ext4

2011-04-19 Thread Luigi Rosa
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Brandon Ooi said the following on 19/04/11 21:32:

 Mail servers with high I/O won't get much (if any) of a performance boost. 
 It's an i/o issue not something that ext4 can help you with except possibly a 
 faster fsck if things go down. Things like delayed allocation.. extents.. 
 Don't help with millions of tiny files. 
 
 Faster drives and hardware raid with write cache. Better if you can have 
 multiple disk sets and spread i/o around. 

Do you think that under VMware ESXi it would be better or worse to migrate to 
ext4?



Ciao,
luigi

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Re: [CentOS] iscsi-initiator-utils required in 5.6, loads uneeded modules

2011-04-10 Thread Luigi Rosa
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Stephen Harris said the following on 10/04/11 15:48:

 And I can't remove it
   % rpm -e iscsi-initiator-utils
   error: Failed dependencies:
   iscsi-initiator-utils is needed by (installed) 
 mkinitrd-5.1.19.6-68.el5.i386

I saw that during the upgrade.

My guess is that probably the new mkinitrd supports boot from iscsi target.

But I don't know why iscsi and iscsid are enabled by default. Is it safe to turn
them off if I don't have iSCSI?


Ciao,
luigi

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[CentOS] CentOS 5.6

2011-04-09 Thread Luigi Rosa
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Just one thing: THANK YOU ALL!!!

Ciao,
luigi

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Re: [CentOS] Auto-updates -- Bad Idea?

2011-04-06 Thread Luigi Rosa
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email builder said the following on 06/04/11 20:35:

   Is the only reasonable solution to schedule a human cron once a week to 
 look 
 at needed updates?  Ouch.

I use human cron.

I have a CenOS server at home and I follow CentOS and other software 
announcements.

When there is a critical or important upgrade, I do the upgrade on all the 
servers.



Ciao,
luigi

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The bomb will never go off, and I speak as an expert in explosives.
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Re: [CentOS] OT: IBM and Dell rack

2011-03-30 Thread Luigi Rosa
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Fajar Priyanto said the following on 31/03/11 05:35:

 Hi all, sorry for the OT.
 Is IBM and Dell 42U rack compatible in dimension, rails, etc?
 Can we put IBM servers into Dell rack?

Should be, granted that the rails of IBM servers are extedable or retractable,
as nearly every server rails are nowdays.



Ciao,
luigi

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Re: [CentOS] dns question

2011-03-22 Thread Luigi Rosa
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ann kok said the following on 22/03/11 14:13:

 How can I know the refresh rate of the dns server?


$ dig www.google.com

...
;; ANSWER SECTION:
www.google.com. 515949  IN  CNAME   www.l.google.com.
www.l.google.com.   300 IN  A   74.125.39.106
www.l.google.com.   300 IN  A   74.125.39.147
www.l.google.com.   300 IN  A   74.125.39.99
www.l.google.com.   300 IN  A   74.125.39.103
www.l.google.com.   300 IN  A   74.125.39.104
www.l.google.com.   300 IN  A   74.125.39.105

The second column is the TTL




Ciao,
luigi

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questo le rendera` interessanti per attivita` sportive,
ma e` escluso che possano mai avere applicazioni commerciali.
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Re: [CentOS] tar exclude question

2011-03-15 Thread Luigi Rosa
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Rainer Traut said the following on 15/03/11 10:25:

 This always sends me an unwanted email with:
 tar: Removing leading `/' from member names

Redirect the stdout/stderr to some file:

tar cvzf /mnt/mybackup.tgz /foo /bar  /var/log/backup 2 /var/log/backuperrors

 Because the exclude pattern matches under dir1 my important File is not 
 backed up. The problem is, I cannot specify the exclude pattern to match 
 only /tmp/foo/dir2 , can I?

It's a matter of personal taste, but I find more useful the -X (or
- --exclude-from) option





Ciao,
luigi

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Re: [CentOS] tar exclude question

2011-03-15 Thread Luigi Rosa
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Mogens Kjaer said the following on 15/03/11 10:56:

 tar: Removing leading `/' from member names
 Add -P to include leading /

...and be VERY CAREFUL when you unpack that tar ;)



Ciao,
luigi

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Luke: I don't believe it.
Yoda: That is why you fail.
--Empire Strikes Back
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Re: [CentOS] Installation failure

2011-03-10 Thread Luigi Rosa
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Mark said the following on 11/03/11 04:51:

 Any suggestions?

If is not an issue related to the hardware try with

 linux text acpi=off


Ciao,
luigi

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Re: [CentOS] server specifications

2011-02-13 Thread Luigi Rosa
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Michel Donais said the following on 13/02/11 16:26:
 Did somebody can give me some advises on hardware for building a Centos linux
 server?

What will you put on that server?


Ciao,
luigi

- -- 
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+--[Luigi Rosa]--
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I used to wish the universe were fair. Then one day it hit me: What if
the universe were fair? Then all the awful things that happen to us in
life, would happen because we deserved them. So now I take great
pleasure in the general hostility and unfairness of things.
   --Marcus Cole, A Late Delivery from Avalon, Babylon 5
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Re: [CentOS] Was, Re: CentOS 6.0 alpha testers, is features (actually syslogd)

2011-02-05 Thread Luigi Rosa
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James Pearson said the following on 05/02/11 17:44:

 The default rsyslog config should do that same as the default config 
 settings for syslog

Confirmed.


Ciao,
luigi

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Re: [CentOS] squid

2011-01-17 Thread Luigi Rosa
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madu...@gmail.com said the following on 17/01/11 18:44:
 I need to know the meaning of this line in my squid access log
 
 1295267166.311   1069 10.6.50.123 TCP_MISS/200 16623 GET
 http://www.mycom.com/sendNews.php? - DIRECT/71.6.196.18 text/html

The object has been requested from the origin server.

http://docstore.mik.ua/squid/FAQ-6.html




Ciao,
luigi

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USA Today has come out with a new survey.
Apparently, three out of every four people make up 75% of the population.
--David Letterman
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Re: [CentOS] yum update troubles

2011-01-04 Thread Luigi Rosa
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Scott Silva said the following on 04/01/11 20:06:

 CPAN will just hide the problems, since RPM will NOT know about any CPAN
 packages and will happily overwrite them.

I am not a Perl expert, but in my experience the packages installed with CPAN
and with RPM does not overwrite each other. CPAN stores the libraries in a
different directory in which Perl looks for libraries before than looking for
the libraries downloaded with RPM.

This is according my experience, but some Perl installation expert will be able
to clarify this issue.


Ciao,
luigi

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Critics are like eunuchs in a harem: they know how it's done,
they've seen it done every day, but they're unable to do it themselves.
--Brendan Behan
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Re: [CentOS] yum update troubles

2011-01-04 Thread Luigi Rosa
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Benjamin Franz said the following on 04/01/11 21:42:

 Right up until an update for Perl itself is pushed - and then you will 
 find all your packages gone. If you need to tweek, use cpan2rpm to 
 generate rpms. I've generally found the issues are tied to man files - 
 so if you suppress the man file generation in the spec and stick with 
 perldoc for a module's documentation you can generally work around the 
 conflicts.

You are right about the problem about update. That's why I put every Perl
library I install on a server in a script that invokes either yum or CPAN to
install/update/document the installed libraries.

I will give cpan2rpm a try, thank you


Ciao,
luigi

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Good day for a change of scene. Repaper the bedroom wall.
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Re: [CentOS] yum update troubles

2011-01-03 Thread Luigi Rosa
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Matt said the following on 03/01/11 21:39:

 Running yum update on CentOS 4.8 32 bit I keep getting this:
 
 -- Running transaction check
 -- Processing Dependency: perl(Compress::Raw::Zlib) = 2.024 for
 package: perl-IO-Compress
 -- Finished Dependency Resolution
 Error: Missing Dependency: perl(Compress::Raw::Zlib) = 2.024 is needed
 by package perl-IO-Compress
 
 I try to uninstall perl-IO-Compress but something like 91 packages
 depend on it.  Any ideas?

Conflict with rpmforge, happened to several installation since mid December.

Solved removing perl RPM packages and using CPAN.





Ciao,
luigi

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UFOs are for real: Air Force doesn't exist.
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Re: [CentOS] Issues with CentOS in enterprise

2010-12-12 Thread Luigi Rosa
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Zdenek said the following on 12/12/10 17:45:

 Are there any public resources that can be used as proofs of CentOS stability?

Are there about Windows stability?


Ciao,
luigi

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Re: [CentOS] ultimate backup choice

2010-12-11 Thread Luigi Rosa
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S Mathias said the following on 11/12/10 13:17:

 are there any backup methods, that meets these two requirements? :

rsync metts and exceeds the requirements

you can run rsync over ssh to secure the data transfer and rsync can transfer
only the diff of large files, to quote just two of the options you have

Just google   backup using rsyncto access many howtos

For rsync over ssh see http://troy.jdmz.net/rsync/index.html or google   rsync
over ssh



Ciao,
luigi

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Don't wrestle a pig in a mudhole.
You both get all dirty, and the pig enjoys it.
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Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-07 Thread Luigi Rosa
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Mathieu Baudier said the following on 07/12/10 12:23:

 Some big providers in some countries limit the number of device that
 can connect to internet. 

FastWeb does this in Italy.

They configure their router (to which you do NOT have access) giving the LAN
side a 192.168.x.x/24 but only the first 'n' IPs ('n' depends on how much you
pay) of the subnet are NATted.



Ciao,
luigi

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Biggest Black Hole ever Found in Nearby Galaxy.
EVERYBODY PAN..IC
--fark.com
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Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

2010-12-07 Thread Luigi Rosa
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Les Mikesell said the following on 07/12/10 17:01:

 So security will depend on every connection owner having a high level of 
 knowledge about ipv6 internals?   Is this being designed by people planning 
 careers as consultants?

A network protocol should not be designed to accommodate for the flaws of some 
OSes.

If an OS is full of bug and if certain OS installations out of the box cannot
survive longer than few hours exposed to a direct Internet connection, it's not
a failure of the network protocol, but is a failure of the OS.

Let's try not to build an infrastructure in a way to make easier to develop and
distribute bogous OSes


Ciao,
luigi

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Those who do not understand Unix are condemned to reinvent it, poorly.
--Henry Spencer
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Re: [CentOS] ntfs

2010-12-05 Thread Luigi Rosa
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Ritika Garg said the following on 05/12/10 19:22:

 CentOS 5.5 is installed in the system. I installed the package
 kmod-ntfs-2.1.27-3.el5.elrepo.x86_64.rpm
 I mounted Seagate external hard disk. I am able to copy contents from the hard
 disk to the system but not from the system to the hard disk.

Check if te file system is mounted read-only, what's the output of mount 
command?



Ciao,
luigi

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Re: [CentOS] Strange ntp behaviour?

2010-11-21 Thread Luigi Rosa
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Robert Moskowitz said the following on 22/11/10 01:51:

 Yet from this host I get:
 
 # host 0.centos.pool.ntp.org
 0.centos.pool.ntp.org has address 208.53.158.34
 0.centos.pool.ntp.org has address 69.50.219.51
 0.centos.pool.ntp.org has address 108.76.168.145
 
 So what is NTP doing here; why the errors for getaddrinfo?
 
 Or is this nothing more than 2 out of some many times getaddrinfo failed, but 
 worked just fine enough to count?

Could be a temporary failure.

Check actual ntpd status withntpq -p

In alternative you could use generic ntp public pool:

server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server 3.pool.ntp.org

Or your local ntp public pool: go to http://www.pool.ntp.org/en/ choose your
geographic area from the table on top right of the page then your coutry.

For instance, United States server pool configuration is

server 0.us.pool.ntp.org
server 1.us.pool.ntp.org
server 2.us.pool.ntp.org
server 3.us.pool.ntp.org








Ciao,
luigi

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Or is it?
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Re: [CentOS] Router for SOHO network - hardware considerations

2010-11-21 Thread Luigi Rosa
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Niki Kovacs said the following on 22/11/10 07:51:

 Is there anything you could especially recommend for this job? (I'm not 
 afraid of getting my hands dirty, BTW :oD)

Consider a type of hardware that needs to be always on for a long period of
time maybe in a dirty and hot environment. Also the availability of long time
vendor support is an important issue.

When I needed this type of hardware for similar missions, I found that the
cheapest solution is an entry level server of Dell or HP. They are very silent,
compact, well supported by CentOS and they can be purchased without
pre-installed OEM software.

Both have some BIOS options that you can set to lower power consumption.

Just one thing: keep in mind that HP ProLiant 1xx series has ony 1 year of on
site warranty, compared to 3 years of other ProLiant, at least in Europe.



Ciao,
luigi

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