Comments on: HAProxy: Reloading Your Config With Minimal Service Impact http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/?utm_source=rss&utm_medium=rss&utm_campaign=haproxy-reloading-your-config-with-minimal-service-impact geek Thu, 12 Jan 2012 21:38:49 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Manisha Mahawar http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-240 Manisha Mahawar Thu, 12 Jan 2012 21:38:49 +0000 http://www.mgoff.in/?p=77#comment-240 Hi Micheal, I am using HAProxy on RedHat and have below configuration. global daemon maxconn 1024 log 127.0.0.1 local1 info defaults log global balance roundrobin mode http retries 3 option redispatch timeout connect 300000ms timeout client 300000ms timeout server 300000ms listen epgs bind *:80 server server1 127.0.0.1:8080 maxconn 1 check server server2 epg01.lab.mystrotv.com:8080 maxconn 1 check stats uri /stats I started firing 5000 request to HAProxy using JMeter. While JMeter is firing the request I removed the server2 from configuration file and fired "haproxy -f /etc/haproxy.cfg -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid) command. I noticed connection refused for 2 requests in my JMeter log. Do you know which configuration I should use to make HAProxy not drop any request? Thanks for your help in advance. Manisha Hi Micheal,

I am using HAProxy on RedHat and have below configuration.
global
daemon
maxconn 1024
log 127.0.0.1 local1 info

defaults
log global
balance roundrobin
mode http
retries 3
option redispatch
timeout connect 300000ms
timeout client 300000ms
timeout server 300000ms

listen epgs
bind *:80
server server1 127.0.0.1:8080 maxconn 1 check
server server2 epg01.lab.mystrotv.com:8080 maxconn 1 check
stats uri /stats

I started firing 5000 request to HAProxy using JMeter. While JMeter is firing the request I removed the server2 from configuration file and fired “haproxy -f /etc/haproxy.cfg -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid) command. I noticed connection refused for 2 requests in my JMeter log.

Do you know which configuration I should use to make HAProxy not drop any request?

Thanks for your help in advance.
Manisha

]]> By: Michael Goffin http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-200 Michael Goffin Mon, 27 Jun 2011 13:12:12 +0000 http://www.mgoff.in/?p=77#comment-200 Musa - that directory structure doesn't exist in Ubuntu. My best guess is that you've installed a version of HAProxy (or the init script itself) that is not meant to be used on Ubuntu, and it is looking for a file that would normally be in that place in the OS it was meant for. I don't have a box right now to confirm, but I think that path is one you would find in Redhat and Redhat-derived distros. Musa – that directory structure doesn’t exist in Ubuntu. My best guess is that you’ve installed a version of HAProxy (or the init script itself) that is not meant to be used on Ubuntu, and it is looking for a file that would normally be in that place in the OS it was meant for. I don’t have a box right now to confirm, but I think that path is one you would find in Redhat and Redhat-derived distros.

]]> By: Musa http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-199 Musa Mon, 27 Jun 2011 12:02:05 +0000 http://www.mgoff.in/?p=77#comment-199 Hi Michael, I have been bugged by the error i face when i try to restart the HAproxy :P Could you kindly tell me which specific changes i need to make in my HAproxy/ubuntu 10.04 to solve the following error: # /etc/init.d/haproxy restart .: 12: Can't open /etc/rc.d/init.d/functions (i am running it as root) Hi Michael,

I have been bugged by the error i face when i try to restart the HAproxy :P
Could you kindly tell me which specific changes i need to make in my HAproxy/ubuntu 10.04 to solve the following error:

# /etc/init.d/haproxy restart
.: 12: Can’t open /etc/rc.d/init.d/functions

(i am running it as root)

]]> By: Marcus Bointon http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-160 Marcus Bointon Tue, 11 Jan 2011 18:17:36 +0000 http://www.mgoff.in/?p=77#comment-160 Nicely observed. For everyone's peace of mind, you might like to know that the stock haproxy package in Ubuntu 10.04 does indeed use the -sf option when you ask it to reload, and the init script uses '$(cat $PIDFILE)', which seems good to me. Nicely observed. For everyone’s peace of mind, you might like to know that the stock haproxy package in Ubuntu 10.04 does indeed use the -sf option when you ask it to reload, and the init script uses ‘$(cat $PIDFILE)’, which seems good to me.

]]> By: Guadalupe Cudan http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-155 Guadalupe Cudan Wed, 29 Dec 2010 15:55:46 +0000 http://www.mgoff.in/?p=77#comment-155 nice work indeed. Subscribing to your feeds nice work indeed. Subscribing to your feeds

]]> By: Michael Goffin http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-120 Michael Goffin Thu, 02 Dec 2010 14:01:56 +0000 http://www.mgoff.in/?p=77#comment-120 Sure! Sure!

]]> By: Ronald http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-119 Ronald Thu, 02 Dec 2010 08:56:03 +0000 http://www.mgoff.in/?p=77#comment-119 Yes thanks working now, your a savior.... Can I ask you 1 more thing regarding multiple routing of domain and subdomain in haproxy? Yes thanks working now, your a savior…. Can I ask you 1 more thing regarding multiple routing of domain and subdomain in haproxy?

]]> By: Michael Goffin http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-118 Michael Goffin Thu, 02 Dec 2010 06:21:53 +0000 http://www.mgoff.in/?p=77#comment-118 Hello Ronald! Are you using the init script to restart haproxy? If so, it should handle everything you need by just running `/etc/init.d/haproxy restart` from the command line (or in a script if you want to wrap the command for any reason). But it sounds like haproxy isn't being shut down properly when doing a restart if the socket is still being used. You can try the modifications I noted to the init script and use the "reload" option to see if that helps. Good luck! Hello Ronald! Are you using the init script to restart haproxy? If so, it should handle everything you need by just running `/etc/init.d/haproxy restart` from the command line (or in a script if you want to wrap the command for any reason). But it sounds like haproxy isn’t being shut down properly when doing a restart if the socket is still being used. You can try the modifications I noted to the init script and use the “reload” option to see if that helps. Good luck!

]]> By: Ronald http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-117 Ronald Thu, 02 Dec 2010 04:06:06 +0000 http://www.mgoff.in/?p=77#comment-117 Hi Michael, I'm having issue with haproxy restart, I can't restart my load balancer it says socket port are being used, I was wondering if above script need to put on another script to execute or just type it in command line? Hi Michael, I’m having issue with haproxy restart, I can’t restart my load balancer it says socket port are being used, I was wondering if above script need to put on another script to execute or just type it in command line?

]]> By: A custom init.d start-up script for HAProxy: start, stop, restart, reload, checkconfig ~ Mattias Geniar http://www.mgoff.in/2010/04/18/haproxy-reloading-your-config-with-minimal-service-impact/comment-page-1/#comment-112 A custom init.d start-up script for HAProxy: start, stop, restart, reload, checkconfig ~ Mattias Geniar Thu, 04 Nov 2010 18:02:15 +0000 http://www.mgoff.in/?p=77#comment-112 [...] reload option was created based on the excellent post titled "HAProxy: Reloading Your Config With Minimal Service Impact", by Michael [...] [...] reload option was created based on the excellent post titled "HAProxy: Reloading Your Config With Minimal Service Impact", by Michael [...]

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