Re: [CentOS-virt] Using network-script with Xen 4.4.1 (aka what will I do without xend?)

2015-01-29 Thread Gene
I have seen those documents, I did not see anything that indicates how _automatic_ bridge configuration could be enabled with xl. For my specific set up I have two bridges (xenbr0 - peth0 xenbr1 - peth1). If I have to configure this manually with ifcfg scripts I will, but if an automatic method

Re: [CentOS] C6 server responding extremely slow on ssh interactive

2015-01-29 Thread SilverTip257
On Thu, Jan 29, 2015 at 2:34 AM, Patrick Bervoets patrick.bervo...@psc-elsene.be wrote: Op 28-01-15 om 17:51 schreef anax: Hi Patrick have you ever tried to find out on which side the hanger is: on the client's or on the server's, using tcpumg or the like? That migth help a bit further

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Les Mikesell
On Thu, Jan 29, 2015 at 7:05 AM, Joseph L. Brunner j...@affirmedsystems.com wrote: our investigation showed the rsync process even with all switches we found has to open the file a bit before it copies it... so rsync sucks for this kind of stuff with 2 MILLION small files - it never gets

[CentOS-virt] Using network-script with Xen 4.4.1 (aka what will I do without xend?)

2015-01-29 Thread Gene
I normally use the network-script parameter in the '/etc/xen/xend-config.sxp' configuration file to configure network bridges. However, the latest release of Xen4CentOS (which comes with Xen 4.4.1) has xend disabled by default. Can I continue to use network-script without xend? If not what is

Re: [CentOS] Apache and SSLv3

2015-01-29 Thread Alessandro Baggi
On 01/26/2015 06:48 PM, Ken wrote: I'm configuring apache with https and I've a question about sslv3 deactivation. Running openssl ciphers -v I get a list of cypher suite of openssl like: ECDH-RSA-AES128-GCM-SHA256 TLSv1.2 Kx=ECDH/RSA Au=ECDH Enc=AESGCM(128) Mac=AEAD . SSLProtocol

[CentOS] CentOS 6.6 and webcams

2015-01-29 Thread Ron Yorston
The issue of webcams not working with recent kernels on CentOS 6.6 has come up a number of times on the list. I'm happy to report that the latest kernel (2.6.32-504.8.1) appears to have fixed the problem. The relevant changelog entry is: - [usb] ehci: Fix a regression in the ISO scheduler

Re: [CentOS] Monitor RPMs in Repo

2015-01-29 Thread Markus Shorty Uckelmann
Am 28.01.2015 um 18:08 schrieb Jonathan Billings: I use 'mrepo' [1] to sync EPEL (and other repos) to a local mirror so systems not publicly routed can get packages. It generates an email of repo changes every time it runs, so I know what is added and removed. Will take look. I also

Re: [CentOS] CVE-2015-0235 - glibc gethostbyname

2015-01-29 Thread Simon Banton
At 15:09 -0800 28/1/15, David C. Miller wrote: Although I hate Oracle with a fury, one good thing is that they put all the updates they rebuild for their RHEL clone in a publicly viewable site. I'm guessing they pay Redhat for extended support on end of life RHEL4 to get access to the source

[CentOS] CentOS-announce Digest, Vol 119, Issue 11

2015-01-29 Thread centos-announce-request
Send CentOS-announce mailing list submissions to centos-annou...@centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread Jatin Davey
On 1/29/2015 4:50 AM, Gordon Messmer wrote: On 01/28/2015 04:32 AM, Jatin Davey wrote: Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. Start by identifying your disk and controller. Assuming that this is a single SATA disk: # smartctl

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread Jatin Davey
On 1/28/2015 11:07 PM, John R Pierce wrote: On 1/28/2015 4:32 AM, Jatin Davey wrote: I am using RHEL 6.5 on my server. From top command i can see that the processors in my server are spending a lot of time on wait for I/O. I can see high percentage in terms of 30-50% on wa time. Here is the

Re: [CentOS-virt] Using network-script with Xen 4.4.1 (aka what will I do without xend?)

2015-01-29 Thread Lars Kurth
Gene, I think you should find the answers in * http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt (bottom of page) * http://wiki.xenproject.org/wiki/Migration_Guide_To_Xen4.1%2B * http://wiki.xenproject.org/wiki/Network_Configuration_Examples_%28Xen_4.1%2B%29 *

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Eero Volotinen
2015-01-23 11:44 GMT+02:00 Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de: Hi, I do have two centos 6.6 servers. With a performance optimized rsync I get an speed of 15 - 20 MB/s The options I use are: rsync -aHAXxv --numeric-ids --progress -e ssh -T -c arcfour -o

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Joseph L. Brunner
We routinely have to sync 4TB, which is about 2M files... Rsync never does well for us - it just cant push the line at all So, this may or may not work for you - but this is a huge problem - so we tried whole excel spreadsheet worth of combinations, every protocol imaginable to make this

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Marcelo Ricardo Leitner
On 28-01-2015 21:39, Gordon Messmer wrote: On 01/23/2015 01:44 AM, Götz Reinicke - IT Koordinator wrote: I do have two centos 6.6 servers. With a performance optimized rsync I get an speed of 15 - 20 MB/s That *is* pretty slow for sustained writes. Does the same rate hold true for individual

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread Les Mikesell
On Thu, Jan 29, 2015 at 7:07 AM, Jatin Davey jasho...@cisco.com wrote: [Jatin] Yes , entire disk is mounted on a single file system. Will this cause high wait time for I/O operations ? Do you think splitting it into multiple partitions would help ? Appreciate if you can enlighten me in this

Re: [CentOS] Kickstarting several *different* setups

2015-01-29 Thread Les Mikesell
On Wed, Jan 21, 2015 at 8:00 AM, James B. Byrne byrn...@harte-lyne.ca wrote: Ansible, Bcfg2, Chef, Cobbler, Puppet, and Salt; I notice that Spacewalk is not mentioned. Any particular reason that it gets no recommendations? I think with Spacewalk you are pretty much committed to not using

Re: [CentOS] Kickstarting several *different* setups

2015-01-29 Thread Les Mikesell
On Wed, Jan 21, 2015 at 7:53 AM, James B. Byrne byrn...@harte-lyne.ca wrote: On Tue, January 20, 2015 18:37, Les Mikesell wrote: There's also saltstack which is one of the newer of the bunch. It has some chance of working reasonably across different platforms. How you feel about it will

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread Gordon Messmer
On 01/29/2015 05:07 AM, Jatin Davey wrote: Yes , it is a SATA disk. I am not sure of the speed. Can you tell me how to find out this information ? Additionally we are using RAID 10 configuration with 4 disks. What RAID controller are you using? # lspci | grep RAID

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Gordon Messmer
On 01/23/2015 11:10 AM, Valeri Galtsev wrote: I'm not certain what the problem could be. But enabling jumbo packets would be the fist thing I would try Jumbo frames are an excellent option if your system is spending a lot of time processing interrupts, which is why I asked about the hi value

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Gordon Messmer
On 01/23/2015 10:54 AM, Patrick Flaherty wrote: Not an expert in rsync/ssh, but I'm pretty sure it's ssh's tcp window size that is the slowness. Probably not? TCP window size is usually only a problem if the sender is capable of sending more data than the window size before the receiver

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Gordon Messmer
On 01/29/2015 09:09 AM, Les Mikesell wrote: our investigation showed the rsync process even with all switches we found has to open the file a bit before it copies it Rsync is going to read the directory tree first, then walk it on both sides comparing timestamps (for incrementals) and block

Re: [CentOS] C6 server responding extremely slow on ssh interactive

2015-01-29 Thread Gordon Messmer
On 01/28/2015 11:28 PM, Patrick Bervoets wrote: Arping on the troublesome server gives 0 responses. I just tried with a physical console on that server and there I got the same unresponsive behaviour. Well, that's a different story, then. :) I haven't seen delays anywhere near that long

Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?

2015-01-29 Thread Gordon Messmer
On 01/28/2015 09:47 PM, Charles Polisher wrote: Add this parameter: --bwlimit=0 That's the default, so it's unlikely to change anything. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

[CentOS-announce] CESA-2015:0100 Moderate CentOS 7 libyaml Security Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Security Advisory 2015:0100 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-0100.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64:

[CentOS-announce] CEBA-2015:0108 CentOS 6 tcsh BugFix Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Bugfix Advisory 2015:0108 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0108.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386:

[CentOS] build c7 packages for i686 using mock

2015-01-29 Thread Gordon Messmer
This might be an embarrassingly simple question. How are people building multi-arch library packages on CentOS 7? On older releases one could mock -r epel-6-i386 and mock -r epel-6-x86_64 to build a library twice. With no 32-bit release, there's no epel-7-i386 target for mock. Specifying

[CentOS-announce] CEBA-2015:0110 CentOS 6 nss-softokn BugFix Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Bugfix Advisory 2015:0110 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0110.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386:

[CentOS-announce] CESA-2015:0102 Important CentOS 7 kernel Security Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Security Advisory 2015:0102 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-0102.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64:

[CentOS-announce] CEBA-2015:0097 CentOS 6 libssh2 BugFix Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Bugfix Advisory 2015:0097 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0097.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386:

[CentOS-announce] CESA-2015:0102 Important CentOS 7 kernel Security Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Security Advisory 2015:0102 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-0102.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64:

Re: [CentOS] CentOS 6.6: Webcam problem

2015-01-29 Thread Mark LaPierre
On 12/12/14 04:08, Ron Yorston wrote: Last month we discussed the problems with webcams in CentOS 6 and I raised Bugzilla #1158988 with Red Hat. This bug has now been declared a duplicate of 1145805. Unfortunately I'm unable to access that report so although I know Red Hat are looking into

Re: [CentOS] build c7 packages for i686 using mock

2015-01-29 Thread Peter
On 01/30/2015 11:56 AM, Gordon Messmer wrote: This might be an embarrassingly simple question. How are people building multi-arch library packages on CentOS 7? On older releases one could mock -r epel-6-i386 and mock -r epel-6-x86_64 to build a library twice. With no 32-bit release, there's

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread Jatin Davey
On 1/30/2015 1:53 AM, Gordon Messmer wrote: On 01/29/2015 05:07 AM, Jatin Davey wrote: Yes , it is a SATA disk. I am not sure of the speed. Can you tell me how to find out this information ? Additionally we are using RAID 10 configuration with 4 disks. What RAID controller are you using? #

Re: [CentOS] Very slow disk I/O

2015-01-29 Thread John R Pierce
On 1/29/2015 7:21 PM, Jatin Davey wrote: [root@localhost ~]# lspci | grep RAID 05:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS-3 3108 [Invader] (rev 02) to get info out of those, you need to install MegaCli64 from LSI Logic, which has the ugliest command lines and output

[CentOS-announce] CEBA-2015:0098 CentOS 6 curl BugFix Update

2015-01-29 Thread Johnny Hughes
CentOS Errata and Bugfix Advisory 2015:0098 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0098.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: