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tech:others:haproxy [2015/04/11 06:44] |
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| + | ====== haproxy ====== | ||
| + | ===== Install ===== | ||
| + | * Download haproxy and change directory to download directory | ||
| + | * Run make and make install as root | ||
| + | ==== Make ==== | ||
| + | To choose TARGET run | ||
| + | <code bash> | ||
| + | uname -a | ||
| + | </code> | ||
| + | Output: | ||
| + | <code> | ||
| + | Linux somehost 2.6.32-358.11.1.el6.x86_64 #1 SMP Wed May 15 10:48:38 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux | ||
| + | </code> | ||
| + | Considering the above was kernel 2.6, using TARGET as below. | ||
| + | |||
| + | <code bash> | ||
| + | make TARGET=linux2628 USE_PCRE=1 USE_LIBCRYPT=1 USE_LINUX_SPLICE=1 USE_LINUX_TPROXY=1 | ||
| + | </code> | ||
| + | Some options listed may not work - feel free to remove them such as ''USE_PCRE=1'' | ||
| + | |||
| + | ==== Make Install ==== | ||
| + | <code bash> | ||
| + | make install | ||
| + | </code> | ||
| + | haproxy typically gets installed at ''/usr/local/sbin/haproxy'' | ||
| + | |||
| + | ===== Configuration ===== | ||
| + | To configure, create a configuration file at chosen location. Preferred: /etc/haproxy/haproxy.cfg | ||
| + | * Load balance on port 8000 | ||
| + | * Sticky sessions between multiple servers (someserver1 & someserver2) | ||
| + | * Add administration (port 7999) | ||
| + | |||
| + | <code> | ||
| + | global | ||
| + | daemon | ||
| + | maxconn 4096 | ||
| + | |||
| + | defaults | ||
| + | mode http | ||
| + | timeout connect 5000ms | ||
| + | timeout client 50000ms | ||
| + | timeout server 50000ms | ||
| + | |||
| + | frontend http-in | ||
| + | bind *:8000 | ||
| + | default_backend servers | ||
| + | |||
| + | backend servers | ||
| + | retries 2 | ||
| + | fullconn 4096 | ||
| + | balance roundrobin | ||
| + | cookie SERVERID insert indirect nocache | ||
| + | server server01 someserver1:8080 check cookie s01 | ||
| + | server server02 someserver1:8081 check cookie s02 | ||
| + | server server03 someserver1:8082 check cookie s03 | ||
| + | server server04 someserver2:8090 check cookie s04 | ||
| + | server server05 someserver2:8091 check cookie s05 | ||
| + | server server06 someserver2:8092 check cookie s06 | ||
| + | |||
| + | listen stats :7999 | ||
| + | mode http | ||
| + | stats enable | ||
| + | stats hide-version | ||
| + | stats realm Haproxy\ Statistics | ||
| + | stats uri / | ||
| + | </code> | ||
| + | |||
| + | ===== Start ===== | ||
| + | Simple way to start is as below. This runs as a daemon, since daemon is specified in the configuration. If not, add option -D. | ||
| + | <code bash> | ||
| + | haproxy -f /etc/haproxy/haproxy.cfg | ||
| + | </code> | ||
| + | |||
| + | ===== Logging ===== | ||
| + | ==== Update /etc/rsyslog.conf and related ==== | ||
| + | Edit /etc/rsyslog.conf and uncomment: | ||
| + | <code> | ||
| + | $ModLoad imudp | ||
| + | $UDPServerRun 514 | ||
| + | </code> | ||
| + | |||
| + | Edit /etc/rsyslog.d/haproxy.conf and append line: | ||
| + | <code> | ||
| + | local2.* /var/log/haproxy.log | ||
| + | </code> | ||
| + | |||
| + | Restart rsyslog: | ||
| + | <code> | ||
| + | service rsyslog restart | ||
| + | </code> | ||
| + | |||
| + | Change permissions on log file: | ||
| + | <code> | ||
| + | chmod o+r /var/log/haproxy.log | ||
| + | chmod g+r /var/log/haproxy.log | ||
| + | </code> | ||
| + | |||
| + | ==== Update /etc/haproxy/haproxy.cfg ==== | ||
| + | Edit /etc/haproxy/haproxy.cfg:\\ | ||
| + | |||
| + | Add line in ''global section'': | ||
| + | <code> | ||
| + | log 127.0.0.1 local2 | ||
| + | </code> | ||
| + | |||
| + | Add lines to ''frontend http-in'' section: | ||
| + | <code> | ||
| + | option httplog | ||
| + | log global | ||
| + | </code> | ||
| + | |||
| + | Restart haproxy | ||
| + | |||
| + | |||
| + | ==== Logging Resources ==== | ||
| + | * https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/3/html/Installation_and_Configuration_Guide/Configuring_the_rsyslog_Server.html | ||
| + | * https://transloadit.com/blog/2010/08/haproxy-logging/ | ||
| + | * http://www.percona.com/blog/2014/10/03/haproxy-give-me-some-logs-on-centos-6-5/ | ||
| + | * http://cbonte.github.io/haproxy-dconv/configuration-1.5.html#8 | ||
