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Keepalive...
by John Doe 25 Feb '09

25 Feb '09

Hi, I've been trying to setup keepalive (vrrp) with LVS in direct routing on Centos 5 and I am stuck... Installed ipvsadm from the repo (had to touch /etc/sysconfig/ipvsadm because it complained it was missing) Compiled keepalived-1.1.16.tar.gz Test setup: main switch (192.168.16.0/20) | eth0: 192.168.28.[226|227] VIP=192.168.16.123 2 lvs/keepalived servers eth1: 10.0.0.[1|2] | test switch (10.0.0.0/8) | 10.0.0.[11|12] VIP=192.168.16.123 test servers (real servers) 192.168.16.[228|229] | back to main switch But let's focus on the 2 lvs servers... keepalived.conf: global_defs { notification_email { root@localhost } notification_email_from keepalived(a)lvs1.iper smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id LVS_MASTER ### BACKUP on the backup ### } vrrp_instance VI_1 { state MASTER ### BACKUP on the backup ### interface eth0 lvs_sync_daemon_interface eth1 virtual_router_id 51 priority 100 ### 99 on the backup ### advert_int 1 smtp_alert virtual_ipaddress { 192.168.16.123 } } virtual_server 192.168.16.123 80 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 50 protocol TCP real_server 10.0.0.11 80 { weight 1 } real_server 10.0.0.12 80 { weight 1 } sorry_server 127.0.0.1 80 } /var/log/messages: Feb 20 15:01:09 lvs1 Keepalived: Starting Keepalived v1.1.16 (02/19,2009) Feb 20 15:01:09 lvs1 Keepalived_vrrp: Using MII-BMSR NIC polling thread... Feb 20 15:01:09 lvs1 Keepalived_vrrp: Registering Kernel netlink reflector Feb 20 15:01:09 lvs1 Keepalived_vrrp: Registering Kernel netlink command channel Feb 20 15:01:09 lvs1 Keepalived_vrrp: Registering gratutious ARP shared channel Feb 20 15:01:09 lvs1 Keepalived: Starting VRRP child process, pid=19385 Feb 20 15:01:09 lvs1 Keepalived_vrrp: Opening file '/etc/keepalived/keepalived.conf'. Feb 20 15:01:09 lvs1 Keepalived_vrrp: Configuration is using : 35092 Bytes Feb 20 15:01:09 lvs1 Keepalived_vrrp: VRRP sockpool: [ifindex(2), proto(112), fd(9,10)] And that's it... no VIP showing up... no error message... Looking at the (outdated) log example from the keepalived doc, I seem to miss all the "parsing" of the configuration. A bit like if it was stuck in the vrrp child... On the backup, I get these extra: Feb 20 15:01:18 lvs2 Keepalived_vrrp: VRRP_Instance(VI_1) Entering BACKUP STATE Feb 20 15:01:18 lvs2 Keepalived_vrrp: VRRP sockpool: [ifindex(2), proto(112), fd(9,10)] Feb 20 15:01:18 lvs2 Keepalived_vrrp: Remote SMTP server [127.0.0.1:25] connected. Feb 20 15:01:18 lvs2 Keepalived_vrrp: SMTP alert successfully sent. ps auxfw: root 19384 0.0 0.0 4796 624 ? Ss 15:01 0:00 keepalived -D root 19385 0.0 0.1 4864 1048 ? S 15:01 0:00 \_ keepalived -D lvs1, no VIP: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:04:23:9e:f3:74 brd ff:ff:ff:ff:ff:ff inet 192.168.28.226/20 brd 192.168.31.255 scope global eth0 inet6 fe80::204:23ff:fe9e:f374/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:04:23:9e:f3:75 brd ff:ff:ff:ff:ff:ff inet 10.0.0.1/8 brd 10.255.255.255 scope global eth1 inet6 fe80::204:23ff:fe9e:f375/64 scope link valid_lft forever preferred_lft forever 4: sit0: <NOARP> mtu 1480 qdisc noop link/sit 0.0.0.0 brd 0.0.0.0 lvs2, no VIP: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:04:23:b2:65:02 brd ff:ff:ff:ff:ff:ff inet 192.168.28.227/20 brd 192.168.31.255 scope global eth0 inet6 fe80::204:23ff:feb2:6502/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 100 link/ether 00:04:23:b2:65:03 brd ff:ff:ff:ff:ff:ff inet 10.0.0.2/8 brd 10.255.255.255 scope global eth1 inet6 fe80::204:23ff:feb2:6503/64 scope link valid_lft forever preferred_lft forever 4: sit0: <NOARP> mtu 1480 qdisc noop link/sit 0.0.0.0 brd 0.0.0.0 ipvsadm -l -n shows nothing tcpdump -i eth1 -p vrrp shows nothing Any idea why keepalived would not bring the VIP up and setup vrrp? Thx, JD

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package manager CentOS
by Raghu Narasimhan 25 Feb '09

25 Feb '09

Hi folks, I have some doubts with regards a Python module called paramiko (used to automate ssh related stuff) 1. Does Paramiko 1.7.2 and 1.6.4 work with CentOS 4 2. If yes, what is the exact 'yum' command to install paramiko on CentOS 4? I have tried all possible ones without success. yum install paramiko yum install python-paramiko(with and without version numbers) python-paramiko.noarch *[rUSER@HOST]# yum search paramiko Loading "fastestmirror" plugin Loading "priorities" plugin Searching Packages: Setting up repositories extras 100% |=========================| 1.1 kB 00:00 update 100% |=========================| 951 B 00:00 base 100% |=========================| 1.1 kB 00:00 addons 100% |=========================| 951 B 00:00 Loading mirror speeds from cached hostfile Reading repository metadata in from local files 0 packages excluded due to repository priority protections No Matches found * Installing it without yum throws dependency problems which are never ending : starting with python-crypto and python(abi) - which I am unable to find; which will no doubt lead to other dependencies. Is there any change that has to be made to the yum repository to point it to look in a different place? 3. Alternatively, I also have apt-get on the CentOS box - can you tell me some repos that I can add for apt-get as well? Thanks, -- Raghu Narasimhan raghu.united(a)gmail.com

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Python Matplotlib
by Raghu Narasimhan 25 Feb '09

25 Feb '09

I need to install python - matplotlib (pylab) on CentOS 4 with Python 2.4.6 (installed). Yum (with rpmforge) and/or apt-get isn't able to get anything relevant. Has anyone attempted this before? Even the offiical pages have no mention of CentOS. Do I need to add more to the repo file? I currently have base, update, addons, extras, centosplus, contrib. Thanks, -- Raghu Narasimhan raghu.united(a)gmail.com

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how can disable the http to listen ipv6 and port 58?
by ann kok 25 Feb '09

25 Feb '09

Hi how can disable the http to listen ipv6 ? and what is this one? raw 0 0 :::58 :::* 7 Thank you __________________________________________________________________ Instant Messaging, free SMS, sharing photos and more... Try the new Yahoo! Canada Messenger at http://ca.beta.messenger.yahoo.com/

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Re: [CentOS] cisco netflow analyzer?
by russ＠vshift.com 25 Feb '09

25 Feb '09

Pp ------Original Message------ From: nate Sender: centos-bounces(a)centos.org To: CentOS Mailing list ReplyTo: CentOS Mailing list Sent: Feb 23, 2009 8:13 PM Subject: Re: [CentOS] cisco netflow analyzer? Robinson Tiemuqinke wrote: > Anyone knows any Cisco netflow analyzer that could run on Linux/Windows? I > know that cisco ASDM works at somewhat level but too rough... > > For example, CIsco ASDM can only shows at IP level and only three types > graph, like top 10 source Address, top ten destination level, or top ten > services. but I want the analyzer to show different traffics from the same > box when in need. ntop can read netflow events, the server runs in linux(maybe works in windows too),the client is browser-based so you can access it from almost anywhere.. netflow is somewhat restricted as far as what info you can get, I've only used sflow, a brief comparison of the protocols is at the bottom of this pdf: http://www.sflow.org/sFlowOverview.pdf ntop can read sflow as well, though last time I tried it it was unstable, I used sflowtrend instead. nate _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos Sent from my Verizon Wireless BlackBerry

4 3

JOB: Permanent Database Architect (MySQL preferable) in Reading, Berkshire
by jt＠camalyn.org 25 Feb '09

25 Feb '09

JOB: hi List, My name is James and I'm an open source recruiter currently working with a client in Reading (Berkshire, UK) who are looking to recruit a database architect (experience with MySQL is not necessarily what the client are looking for, although the database architect should certainly be familiar with MySQL. What’s more important is that the DBA should have experience designing large, replicated, globally distributed databases built for performance). The DB Architect will work closely with the development and operations teams - both of which are growing parts of the clients overall business. Whilst the developers have had some involvement with capacity planning and performance monitoring of the live system in conjunction with the Operations team this responsibility will move entirely to the database architect over time. This isn't a development role so the db architect wouldn't be taking over the writing of all SQL or anything (which would be impractical in any case) but they would be expected to use their expertise in advising the developers how best to tune their code. Stored procedures are not currently used but they will probably look at it in the future and this again would be something that the architect would certainly get involved in as well as requirement to revisit existing SQL with a view to perhaps rewrite and/ or optimise. They are running a mixture of MySQL 4.1 and 5.0. They don't run enterprise as they always aim to employ talented staff so they can support everything as far as possible in house. This goes for the OS as well, which is why they use CentOS and not RHEL. Although as part of the role's remit will be to find new opportunities to exploit new features or better use existing ones there are no immediate plans to upgrade to 5.1 as they are quite happy for early adopters to find and fix the bugs before they make any decision on it. Currently there are no specific bottlenecks or db problems as such, the focus is changing in such a way that they need to be able to store more data and consequently they need to have the architect in place. However, although there are no specific issues, there is also a focus on continual improvement of what they have. As with all IT systems, there is always something that can be optimised. Identifying potential future bottlenecks and avoiding them is also part of the role. In terms of the number of high transactional servers - which would be the definite focus - we are looking at high 30s. They do use MySQL replication but not clustering at this time. If anybody is interested in discussing this role with me further (including salary) please contact me off list using james(a)camalyn.org Please understand that I did also send an email requesting permission to send this e-mail to the Centos list owners - but have had no reply or acknowledgement. All the best, JAMES >> to learn more about Camalyn please visit http://www.camalyn.org

2 2

Re: [CentOS] Social Security Changes
by Ralph Angenendt 25 Feb '09

25 Feb '09

Sorin Srbu wrote: > I don't get it... Is the petition CentOS-related?? Ermm, no? Ralph

1 0

Checking for changes
by Joseph L. Casale 25 Feb '09

25 Feb '09

Is there anything I can use to take an inventory of the filesystem before and after some process to see what's changed? Thanks! jlc

7 8

Social Security Changes
by Mark Weaver 25 Feb '09

25 Feb '09

6 5

Thunderbird and Firefox
by Rob Kampen 24 Feb '09

24 Feb '09

I have two CentOS plus x86_64 workstations that as far as possible I am trying to keep the same. One for home, one for my office. I have the 32 bit Firefox installed along with a number of plugins and have just found that firefox no longer plays any shockwave content on my work machine, I have tried disabling the various quicktime, mplayer, realplayer plugins but still no go. Removed firefox and re-installed (via yumex) still no go........ Any other things I can do? Then on my home machine I have lost the ability to click on a http:// link within Thunderbird and have it open the link in Firefox. This works fine on the office machine. It is annoying to have to copy and paste the link to get it to work. I have other CentOS machines (x86) where all this works just fine...... Any pointers to get me heading in the right direction? thanks Rob

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