Re: [CentOS] mysql secure installation and multi mysqld
On Thu, May 17, 2012 at 5:44 AM, Bob Hoffman b...@bobhoffman.com wrote: is it possible to make each one of those instances a replicate/slave of a different master (thus a backup mysql server in a way?) I just recently finished playing with this. I ended up brining up a dedicated VM for this backup mysql server. I then created 2 new init scripts (based off the mysqld one) and modified both to point to their respective my.cnf's (with auto startup via chkconfig etc etc). Both have separate data directories, run off 2 separate ports (and socket files) - which are fire walled anyways as I have no requirement for this to be open on the slaves and replicate 2 separate masters :) L. -- Sent using electronic mail ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] mysql secure installation and multi mysqld
On 5/17/2012 5:30 AM, Leon Jacobs wrote: On Thu, May 17, 2012 at 5:44 AM, Bob Hoffmanb...@bobhoffman.com wrote: is it possible to make each one of those instances a replicate/slave of a different master (thus a backup mysql server in a way?) I just recently finished playing with this. I ended up brining up a dedicated VM for this backup mysql server. I then created 2 new init scripts (based off the mysqld one) and modified both to point to their respective my.cnf's (with auto startup via chkconfig etc etc). Both have separate data directories, run off 2 separate ports (and socket files) - which are fire walled anyways as I have no requirement for this to be open on the slaves and replicate 2 separate masters :) L. Okay, so it looks doable. My plan is to add the instances inside of the my.cnf and then use mysqld_multi to run them as slaves to separate website masters... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Problem building latest Courier-authlib on CentOS4
Upgrading to CentOS6 is on my list, but I'm trying to get the latest Courier-MTA running at the moment. I downloaded the current courier tarballs and tried to build the rpms on a CentOS4 system. I got these errors: $ rpmbuild -tb courier-authlib-0.64.0.tar.bz2 ... libtool: link: ar cru .libs/libauthpipe.a authpipe.o authpipelib.o libtool: link: ranlib .libs/libauthpipe.a libtool: link: ( cd .libs rm -f libauthpipe.la ln -s ../libauthpipe.la libauthpipe.la ) libtool: link: gcc -I/usr/include/mysql -g -pipe -m32 -march=i386 -mtune=pentium4 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -I/usr/include -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -Wall -I.. -I./.. -o authdaemontest authdaemontest.o ./.libs/libcourierauthcommon.a /home/bowieb/rpm/BUILD/courier-authlib-0.64.0/.libs/libcourierauth.a -ldl libtool: link: cannot find the library `libltdl/libltdlc.la' or unhandled argument `libltdl/libltdlc.la' make[2]: *** [authdaemondprog] Error 1 make[2]: *** Waiting for unfinished jobs libtool: link: gcc -I/usr/include/mysql -g -pipe -m32 -march=i386 -mtune=pentium4 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -I/usr/include -O2 -g -pipe -m32 -march=i386 -mtune=pentium4 -Wall -I.. -I./.. -o .libs/authpasswd authpasswd.o ./.libs/libcourierauthcommon.so /home/bowieb/rpm/BUILD/courier-authlib-0.64.0/.libs/libcourierauth.so libhmac/.libs/libhmac.a md5/.libs/libmd5.a sha1/.libs/libsha1.a rfc822/.libs/libencode.a -ldl -Wl,-rpath -Wl,/usr/lib/courier-authlib make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.93944 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.93944 (%build) I asked on the Courier list and Sam said that my libtool is too old. He suggested adding an autoreconf line to the spec file, but that just generated an error that my Autoconf is too old. Can someone give me a pointer as to how to fix this? Thanks -- Bowie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Problem building latest Courier-authlib on CentOS4
Bowie Bailey wrote: Upgrading to CentOS6 is on my list, but I'm trying to get the latest Courier-MTA running at the moment. I downloaded the current courier tarballs and tried to build the rpms on a CentOS4 system. I got these errors: $ rpmbuild -tb courier-authlib-0.64.0.tar.bz2 snip RPM build errors: Bad exit status from /var/tmp/rpm-tmp.93944 (%build) I asked on the Courier list and Sam said that my libtool is too old. He suggested adding an autoreconf line to the spec file, but that just generated an error that my Autoconf is too old. Can someone give me a pointer as to how to fix this? You may not be able to, not without doing some programming yourself. You're trying to build a current package on an o/s two releases old, with no updates since, um, last year? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Problem building latest Courier-authlib on CentOS4
On 5/17/2012 11:34 AM, m.r...@5-cent.us wrote: Bowie Bailey wrote: Upgrading to CentOS6 is on my list, but I'm trying to get the latest Courier-MTA running at the moment. I downloaded the current courier tarballs and tried to build the rpms on a CentOS4 system. I got these errors: $ rpmbuild -tb courier-authlib-0.64.0.tar.bz2 snip RPM build errors: Bad exit status from /var/tmp/rpm-tmp.93944 (%build) I asked on the Courier list and Sam said that my libtool is too old. He suggested adding an autoreconf line to the spec file, but that just generated an error that my Autoconf is too old. Can someone give me a pointer as to how to fix this? You may not be able to, not without doing some programming yourself. You're trying to build a current package on an o/s two releases old, with no updates since, um, last year? As I said, I've got plans to replace it with a CentOS6 server, but that's going to take a bit longer, but I was hoping to be able to upgrade Courier first. -- Bowie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation of CentOS 6 on KVM - Hangs
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 05/16/2012 12:29 PM, Tim Nelson wrote: - Original Message - Greetings- I'm attempting to install CentOS-6 x86_64 to a virtual machine running via KVM on a Proxmox 1.9 system. The specs are 4x CPUs, 4GB RAM, and 160GB HDD. Installation proceeds fine using either minimal or netinstall CDs until installation of the selinux or More specifically, it's hanging on the selinux-policy-targeted RPM. Not sure if this makes a difference, but I thought it worthy of note. --Tim ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos How much memory did you give to the VM? selinux-policy rpm within a update takes a lot of memory. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+1Hf8ACgkQrlYvE4MpobMB/wCeN2sJpUoT7GtCbv2bfwh0IYZc 7MYAn3/Us85DbMgOI5bIhJTYb9yRUuaS =LRnV -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation of CentOS 6 on KVM - Hangs
Daniel J Walsh writes: On 05/16/2012 12:29 PM, Tim Nelson wrote: - Original Message - Greetings- I'm attempting to install CentOS-6 x86_64 to a virtual machine running via KVM on a Proxmox 1.9 system. The specs are 4x CPUs, 4GB RAM, and 160GB HDD. Installation proceeds fine using either minimal or netinstall CDs until installation of the selinux or More specifically, it's hanging on the selinux-policy-targeted RPM. Not sure if this makes a difference, but I thought it worthy of note. --Tim ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos How much memory did you give to the VM? selinux-policy rpm within a update takes a lot of memory. Absolutely. I found that it will not work well or at all with less than 512MB of RAM. If less is wanted, it can be reduced afterwards, but that's the minimum needed for installation. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation of CentOS 6 on KVM - Hangs
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 05/17/2012 12:01 PM, Lars Hecking wrote: Daniel J Walsh writes: On 05/16/2012 12:29 PM, Tim Nelson wrote: - Original Message - Greetings- I'm attempting to install CentOS-6 x86_64 to a virtual machine running via KVM on a Proxmox 1.9 system. The specs are 4x CPUs, 4GB RAM, and 160GB HDD. Installation proceeds fine using either minimal or netinstall CDs until installation of the selinux or More specifically, it's hanging on the selinux-policy-targeted RPM. Not sure if this makes a difference, but I thought it worthy of note. --Tim ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos How much memory did you give to the VM? selinux-policy rpm within a update takes a lot of memory. Absolutely. I found that it will not work well or at all with less than 512MB of RAM. If less is wanted, it can be reduced afterwards, but that's the minimum needed for installation. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Yes installing with less then 512 would be a problem. It might be a little better in RHEL7. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+1IY4ACgkQrlYvE4MpobOrKwCZAUUjXBsFmp1oUj64iAnG5uTQ FcUAn33TyPQwuOyjjHdGoYyhSb/J7pJw =2sGo -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] kernel: nfs: RPC call returned error 88
We have a 2-node Oracle RAC that keeps getting the following error: kernel: nfs: RPC call returned error 88 The storage being mounted is netapp. We don't see any errors/issues on the storage itself or the switches this client is connecting thru. The NFS network is a 2-interface ( 2 x 1Gb UTP) bond which shows no errors of any kind. We are mounting with the following mount options: rw,noac,nointr,bg,hard,timeo= 600,wsize=32768,rsize=32768,nfsvers=3,tcp This problem sometimes hits the OCR votedisk shares and causes the instance to crash. These systems were upgraded to 5.6 back in January. Currently running 2.6.32-300.4.1. Thanks for any info, ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Rewrite part of a message with rsyslog
On Fri, 2012-04-27 at 12:39 +0200, C. L. Martinez wrote: Somebody knows how can I do this?? This is a really late reply: you should join the rsyslog mail list - you'll get lots of help there. Regards, Ranbir -- Kanwar Ranbir Sandhu Linux 3.3.5-2.fc16.x86_64 x86_64 GNU/Linux 12:27:33 up 1 day, 1:13, 3 users, load average: 0.30, 0.45, 0.71 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CONFIG_ARPD turned on in centosplus kernel.
On 05/05/2012 04:45 PM, Akemi Yagi wrote: On Sat, May 5, 2012 at 12:40 PM, Steve Clarkscl...@netwolves.com wrote: http://bugs.centos.org/view.php?id=5709 I actually took the latest centosplus kernel srpm and got it going in my environment (would like to have semi official support though ;-) ). It has been running stable for a couple of weeks now. I have 4 systems setup using it and opennhrp in a DMVPN hub and spoke arrangement. I have 2 hubs with each of the spokes connected to each of the hubs. The spokes would be units in the field while the hubs would be at HQ in a failover environment using OSPF amongst them all. I've updated the RFE you filed with some info. Will be nice if you also add the above note in there. Akemi ___ Thanks Akemi, I am just preparing to test the new kernel. -- Stephen Clark *NetWolves* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Setting overcommit_memory=2 kills system
Hello, In general I am in the habit of turning off memory overcommit because I believe it's a bad thing in a multi-user environment. This was never a problem on rhel5 systems, but on rhel6, I am having issues.When I try to set overcommit_memory=2, my system locks up. It basically behaves as if the memory is all used up... I see the same behavior on centos6 or rhel6. Following is some output from each platform. # -- RHEL6 # uname -a Linux joker 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux #lsb_release -a LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch Distributor ID: RedHatEnterpriseWorkstation Description:Red Hat Enterprise Linux Workstation release 6.2 (Santiago) Release:6.2 Codename: Santiago # free total used free sharedbuffers cached Mem: 2052176 2348281817348 0 15352 112852 -/+ buffers/cache: 1066241945552 Swap: 2052088 02052088 # sysctl -a |grep commit vm.overcommit_memory = 0 vm.overcommit_ratio = 50 vm.nr_overcommit_hugepages = 0 # sysctl -w vm.overcommit_memory=2 vm.overcommit_memory = 2 # ls -bash: fork: Cannot allocate memory # #--- CENTOS6 -- # uname -a Linux joker 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux # lsb_release -a LSB Version: :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch Distributor ID: CentOS Description:CentOS release 6.2 (Final) Release:6.2 Codename: Final # free total used free sharedbuffers cached Mem: 2052176 3786681673508 0 19472 252576 -/+ buffers/cache: 1066201945556 Swap: 2052088 02052088 # sysctl -a |grep commit vm.overcommit_memory = 0 vm.overcommit_ratio = 50 vm.nr_overcommit_hugepages = 0 # sysctl -w vm.overcommit_memory=2 vm.overcommit_memory = 2 [root@joker ~]# ls -bash: fork: Cannot allocate memory One last point. If I set the overcommit values in /etc/sysctl.conf and then reboot, the values get set correctly on boot and everything seems fine. In addition I can then change the value of overcommit_memory to 0 and back to 2 with out any ill affects. Searches for issues with setting overcommit_memory=2 haven't turned up anything useful.. Thanks. -- -MichaelC ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CONFIG_ARPD turned on in centosplus kernel.
On Thu, May 17, 2012 at 11:33 AM, Steve Clark scl...@netwolves.com wrote: On 05/05/2012 04:45 PM, Akemi Yagi wrote: On Sat, May 5, 2012 at 12:40 PM, Steve Clark scl...@netwolves.com wrote: http://bugs.centos.org/view.php?id=5709 I actually took the latest centosplus kernel srpm and got it going in my environment (would like to have semi official support though ;-) ). It has been running stable for a couple of weeks now. I have 4 systems setup using it and opennhrp in a DMVPN hub and spoke arrangement. I have 2 hubs with each of the spokes connected to each of the hubs. The spokes would be units in the field while the hubs would be at HQ in a failover environment using OSPF amongst them all. I've updated the RFE you filed with some info. Will be nice if you also add the above note in there. Akemi ___ Thanks Akemi, I am just preparing to test the new kernel. That's great. I closed the bug report thinking there would be no response. I will reopen it so that you can add your test result. Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] XEN or KVM - performance/stability/security?
On 05/16/2012 02:47 PM, Luke S. Crawford wrote: (how are the paravirt drivers in KVM these days? I have a server full of kvm guests running some ancient version of ubuntu I will be moving to RHEL6 shortly.) Since RHEL guests have the virtio block drivers built-in, I never get around to benchmarking them against non-virtio block devices. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] VMWare Issue
Ok. I run several linux distro's via vmware on top of my windows 7 machine. Currently have an Ubuntu 32-bit 10.4 guest for work. An Ubuntu 11.10 64-bit for misc stuff. Also an OEL 6.2 guest running an oracle database. I just installed CentOS 5.6 32-bit and I can't get the display to work right. When it first boots, the screen is very small and almost impossible to select the username field and log in. Once I log in if I de-select full screen and then re-select full-screen it updates to the correct size. I've installed vmware tools three times now. Inside the centos guess I set my resolution to 1920x1200, which matches my windows 7 machine as well as the resolution I run the other linux guests at. I set the monitor to generic 1920x1200 LCD because my monitor type isn't detected. (Samsung P2770H) Video adapter is set to vmware. (Actual device is an ATI HD 6950) Anyone have any ideas? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Postfix will not start due to permission errors on CentOS 6.2 x86
on 5/16/2012 1:03 PM John R. Dennison spake the following: On Wed, May 16, 2012 at 02:57:03PM -0500, Gilbert Sebenste wrote: No, it was the same reason I couldn't get Apache to work: Selinux was enabled. I disabled Selinux. Now, both work fine. Um, both work out of the box with selinux set to enforcing. There are other issues at play. Disabling selinux is never a fix. Selinux tanked because of the mass file copies he did... The backup files didn't have the extended attributes... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] VMWare Issue
Rhugga Harper wrote: Ok. I run several linux distro's via vmware on top of my windows 7 machine. Ew (cooties! ugh!) (That should be the other way 'round.) snip I just installed CentOS 5.6 32-bit and I can't get the display to work right. When it first boots, the screen is very small and almost impossible to select the username field and log in. Once I log in if I de-select full screen and then re-select full-screen it updates to the correct size. I've installed vmware tools three times now. Inside the centos guess I set my resolution to 1920x1200, which matches my windows 7 machine as well as the resolution I run the other linux guests at. I set the monitor to generic 1920x1200 LCD because my monitor type isn't detected. (Samsung P2770H) Video adapter is set to vmware. (Actual device is an ATI HD 6950) Anyone have any ideas? Is there an /etc/X11/xorg.conf? If so, either edit it, or delete it. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Centos 6 - Networking: Some Queries
Hello all I am setting up a Centos 6 machine with one network card one onboard network port. Both are recognized work. Onboard Network port is unused yet, but is required for dedicated access to LTSP LAN, which would allow older PIII machines to boot from this system. I have installed LTSP but again Networking seems to be the problem area, as the clients won't boot from this machine. Have muddled tinkered with Networking a bit...deleted reconfigured the ifcfg files again again but as I don't understand NetworkManager and Google is not helping get relevant results, so I have brought the system to minimum working condition, where one network card is providing LAN access on which Internet Router is configured. And now I am posting my system's condition below as output of various commands. My network-scripts directory: [root@swyam network-scripts]# ls ifcfg-Internet_GW ifup-eth ifcfg-lo ifup-ippp ifdown ifup-ipv6 ifdown-bnepifup-isdn ifdown-eth ifup-plip ifdown-ipppifup-plusb ifdown-ipv6ifup-post ifdown-isdnifup-ppp ifdown-postifup-routes ifdown-ppp ifup-sit ifdown-routes ifup-tunnel ifdown-sit ifup-wireless ifdown-tunnel init.ipv6-global ifup net.hotplug ifup-aliases network-functions ifup-bnep network-functions-ipv6 Ifconfig output: [root@swyam network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr E0:69:95:77:A7:F3 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:20 Memory:fe60-fe62 eth1 Link encap:Ethernet HWaddr 00:60:52:0C:0B:DE inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2245698 errors:0 dropped:0 overruns:0 frame:0 TX packets:1785431 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3105161344 (2.8 GiB) TX bytes:148843277 (141.9 MiB) Interrupt:16 Base address:0x2000 loLink encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:525 errors:0 dropped:0 overruns:0 frame:0 TX packets:525 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:53459 (52.2 KiB) TX bytes:53459 (52.2 KiB) [root@swyam network-scripts]# cat ifcfg-Internet_GW TYPE=Ethernet BOOTPROTO=none IPADDR=192.168.1.3 PREFIX=24 GATEWAY=192.168.1.1 DNS1=218.248.245.1 DNS2=8.8.8.8 DOMAIN=218.248.245.1 8.8.8.8 8.8.4.4 DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=Internet GW UUID=d4535709-a05b-459d-a4fd-f08ec9460bcc ONBOOT=yes DNS3=8.8.4.4 Network Manager is running and the above card Internet_GW was configured through the NetworkManager applet. Internet works. One can disconnect Internet through the NetworkManager applet. Yet the applet's Edit Connection -- Wired -- Last Used status shows Never. Now let's come to what I want to do with this machineThe Onboard network port for LTSP servicesNetwork card on network 192.168.1.0/24(192.168.1.1 is the ISP ADSL router) to provide LAN access Internet access. Now what I want to do is to create a third network for my virtual machines (KVM) say 172.16.1.1/24. Now create some sort of dummy bridge and get these machines talking to the Internetsaid bridge to either forward the packets through the normal Internet path or somehow use NAT to do it. I think this should be doable but haven't come across any example or any tutorial for this. Now comes why I want a separate networkwhy not use 192.168.1.0/24...problem is...I don't want to disable Network Manager by putting Managed=NO in my ifcfg file. As with Network Manager enabled, I can use USB devices whenever my ISP goes downand I'm afraid it happens more frequently than I care to bear. I frankly also don't understand how Network Manager worksin a broad mannerliterature I found was either too technical or too old or was focussed on a particular problem. I would like to know a network/bridge/device topology that can solve my issuethree networks...lan. ltsp, virtual machines, all having access to each other the net, while keeping the option of using networkmanager or any other tool (I'm open) to plugin any other wireless internet access device. I am not very advanced admin, but can follow instructions. Kindly help. With regards thanks. Sanjay. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
