Shulou(Shulou.com)06/02 Report--

Haproxy reverse proxy

The role of haproxy: reverse proxy server. When a public network user accesses the web server, the haproxy server specifies and hands it over to that web server to achieve high availability and load balancing of the cluster.

Case implementation steps:

V compile and install niginx server

# yum-y install pcre-devel zlib-devel

# useradd-M-s / sbin/nologin nginx

# tar xzvf nginx-1.6.0.tar.gz

# cd nginx-1.6.0

#. / configure-prefix=/usr/local/nginx-user=nginx-group=nginx-with-http_stub_status_module

# make & & make install

# ln-s / usr/local/nginx/sbin/nginx / usr/local/sbin

# nginx

# netstat-lnupt | grep: 80

# echo 1111 > / usr/local/nginx/html/index.html

V compile and install haproxy server

# yum-y install pcre-devel bzip2-devel

# tar xzvf haproxy-1.4.24.tar.gz

# cd haproxy-1.4.24

# make TARGET=linux26 PREFIX=/usr/local/haproxy

# make install PREFIX=/usr/local/haproxy

# cp examples/haproxy.cfg / etc

V restart the service

# / usr/local/haproxy/sbin/haproxy-f / etc/haproxy.cfg

V Haproxy server configuration

# vim / etc/haproxy.cfg

Modify the content:

Global

Log 127.0.0.1 local0 configures logging, and local0 is a logging device

Log127.0.0.1 local1 notice notice is a log level, which usually has 24 levels

# log loghostlocal10 info

Maxconn 4096 maximum number of connections

Uid 99 user uid

Gid 99 user gid

Daemon user

# debug

# quiet

Defaults

Log global defines logs as logs in the global configuration

Modehttp mode is http

Option httplog records logs in http log format

Option dontlognull

Retries 3 check number of node server failures

Maxconn 2000 maximum number of connections

Contimeout 5000 connection timeout

Clitimeout 50000 client timeout

Srvtimeout 50000 server timeout

Listen webcluster 0.0.0.0 80 defines an application

Option httpchk GET / index.html checks the server's index.html file

Balance roundrobin load balancing scheduling algorithm using polling algorithm rr

Server inst1 1.1.1.1 fall 80 check inter 2000 fall 3 defines an online node

Server inst2 1.1.1.2 fall 80 check inter 2000 backup 3 defines a backup node

V haproxy log custom location

# vim / etc/haproxy.cfg

Modify the content:

Log / dev/log local0 info

Log / dev/log local0 notice

# touch / etc/rsyslog.d/haproxy.conf

# vim / etc/rsyslog.d/haproxy.conf

Add content:

If ($programname = = 'haproxy' and $syslogserverity-text = =' info') then-/ var/log/haproxy/haproxy-info.log & ~

If ($programname = = 'haproxy' and $syslogserverity-text = =' notice') then-/ var/log/haproxy/haproxy-notice.log & ~

# / usr/local/haproxy/sbin/haproxy-f / etc/haproxy.cfg

Note: the log of haproxy is output to syslog of the system by default.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.