Install the haproxy and haproxy commands and the haproxy commands

Install the haproxy and haproxy commands and the haproxy commands

Directory:
1. Install haproxy
2. haproxy command

1. Install haproxy

CentOS comes with haproxy, but the version may be old. You can find the latest stable version of haproxy on the IUS source.

cat <<eof>/etc/yum.repos.d/ius.repo[ius]name=iusrepobaseurl=https://mirrors.tuna.tsinghua.edu.cn/ius/stable/CentOS/$releasever/\$basearchgpgcheck=0enable=1eofyum -y install haproxy17u

The following is the process of compiling and installing the haproxy-1.7.10.

During the compilation and installation of haproxy, you can use the pcre environment. In this environment, the Compilation speed will be much faster with the help of regular expressions, but it can also be installed without this environment.

yum -y install pcre pcre-develtar xf haproxy-1.7.10.tar.gz cd haproxy-1.7.10make TARGET=linux2628 ARCH=x86_64 PREFIX=/usr/local/haproxy USE_PCRE=1make install PREFIX=/usr/local/haproxy

You must use TARGET to specify the kernel and version. The version is as follows:

- linux22     for Linux 2.2- linux24     for Linux 2.4 and above (default)- linux24e    for Linux 2.4 with support for a working epoll (> 0.21)- linux26     for Linux 2.6 and above- linux2628   for Linux 2.6.28, 3.x, and above (enables splice and tproxy)- solaris     for Solaris 8 or 10 (others untested)- freebsd     for FreeBSD 5 to 10 (others untested)- netbsd      for NetBSD- osx         for Mac OS/X- openbsd     for OpenBSD 5.7 and above- aix51       for AIX 5.1- aix52       for AIX 5.2- cygwin      for Cygwin- haiku       for Haiku- generic     for any other OS or version.- custom      to manually adjust every setting

Use ARCH to specify the architecture, but the ARCH option can be saved. The use of USE_PCRE = 1 indicates that the PCRE environment is used for compilation to speed up compilation.

After compilation and installation, there are only three directories: doc, share, and sbin. There is only one haproxy main program haproxy in sbin. To facilitate management of haproxy services, you can copy/etc/init.d/haproxy.

2. haproxy command

Frequently used:

# Check the Configuration File Syntax haproxy-c-f/etc/haproxy. cfg # Start in daemon mode and use daemon mode managed by systemd to start haproxy-D-f/etc/haproxy. cfg [-p/var/run/haproxy. pid] haproxy-Ds-f/etc/haproxy. cfg [-p/var/run/haproxy. pid] # Start the debugging function and display all connection and processing information on the screen haproxy-d-f/etc/haproxy. cfg # restart. You need to use the st option to specify the pid list haproxy-f/etc/haproxy. cfg [-p/var/run/haproxy. pid]-st 'cat/var/run/haproxy. pid '# graceful restart, that is, reload. You need to use the sf option to specify the pid list haproxy-f/etc/haproxy. cfg [-p/var/run/haproxy. pid]-sf 'cat/var/run/haproxy. pid '# displays haproxy compilation and startup information haproxy-vv

 

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