编译安装HAProxy
编译安装HAProxy 2.0 LTS版本，更多源码包下载地址：http://www.haproxy.org/download/
解决lua环境
HAProxy 支持基于lua实现功能扩展，lua是一种小巧的脚本语言，于1993年由巴西里约热内卢天主教大学（Pontifical Catholic University of Rio de Janeiro）里的一个研究小组开发，其设计目的是为了嵌入应用程序中，从而为应用程序提供灵活的扩展和定制功能。
Lua 官网：www.lua.org
Lua 应用场景
- 游戏开发
- 独立应用脚本
- Web 应用脚本
- 扩展和数据库插件，如MySQL Proxy
- 安全系统，如入侵检测系统
Centos 基础环境
参考链接：http://www.lua.org/start.html
由于CentOS7 之前版本自带的lua版本比较低并不符合HAProxy要求的lua最低版本(5.3)的要求，因此需要编译安装较新版本的lua环境，然后才能编译安装HAProxy，过程如下：
#当前系统版本
[root@centos7 ~]#lua -v
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
#安装基础命令及编译依赖环境
[root@centos7 ~]# yum install gcc readline-devel
[root@centos7 ~]# wget http://www.lua.org/ftp/lua-5.3.5.tar.gz
[root@centos7 ~]# tar xvf lua-5.3.5.tar.gz -C /usr/local/src
[root@centos7 ~]# cd /usr/local/src/lua-5.3.5
[root@centos7 lua-5.3.5]# make linux test
#查看编译安装的版本
[root@centos7 lua-5.3.5]#src/lua -v
Lua 5.3.5 Copyright (C) 1994-2018 Lua.org, PUC-RioUbuntu 基础环境
#安装基础命令及编译依赖环境
# apt install gcc iproute2 ntpdate tcpdump telnet traceroute nfs-kernel-server nfs-common lrzsz tree openssl libssl-dev libpcre3 libpcre3-dev zlib1g-dev openssh-server libreadline-dev libsystemd-dev
# cd /usr/local/src
# wget http://www.lua.org/ftp/lua-5.3.5.tar.gz
# tar xvf lua-5.3.5.tar.gz
# cd lua-5.3.5
# make linux test
# pwd
/usr/local/src/lua-5.3.5
# ./src/lua -v
Lua 5.3.5 Copyright (C) 1994-2018 Lua.org, PUC-Rio
或安装系统自带的lua
# apt install lua5.3=5.3.3-1ubuntu0.18.04.1
# lua5.3 -v
Lua 5.3.3 Copyright (C) 1994-2016 Lua.org, PUC-Rio编译安装HAProxy
#HAProxy 1.8及1.9版本编译参数：
make ARCH=x86_64 TARGET=linux2628 USE_PCRE=1 USE_OPENSSL=1 USE_ZLIB=1 USE_SYSTEMD=1 USE_CPU_AFFINITY=1 PREFIX=/usr/local/haproxy
#HAProxy 2.0以上版本编译参数：
[root@centos7 ~]#yum -y install gcc openssl-devel pcre-devel systemd-devel
[root@centos7 ~]#tar xvf haproxy-2.1.3.tar.gz -C /usr/local/src
[root@centos7 ~]#cd /usr/local/src/haproxy-2.1.3/
[root@centos7 haproxy-2.1.3]#cat README
[root@centos7 haproxy-2.1.3]#ll Makefile
-rw-rw-r-- 1 root root 40812 Feb 12 23:18 Makefile
[root@centos7 haproxy-2.1.3]#cat INSTALL
#参考INSTALL文件进行编译安装
[root@centos7 haproxy-2.1.3]#make ARCH=x86_64 TARGET=linux-glibc USE_PCRE=1 USE_OPENSSL=1 USE_ZLIB=1 USE_SYSTEMD=1 USE_LUA=1 LUA_INC=/usr/local/src/lua-5.3.5/src/ LUA_LIB=/usr/local/src/lua-5.3.5/src/
[root@centos7 haproxy-2.1.3]# make install PREFIX=/apps/haproxy
[root@centos7 haproxy-2.1.3]#ln -s /apps/haproxy/sbin/haproxy /usr/sbin/
#查看生成的文件
[root@centos7 haproxy-2.1.3]#tree /apps/haproxy/
/apps/haproxy/
├── doc
│ └── haproxy
│ ├── 51Degrees-device-detection.txt
│ ├── architecture.txt
│ ├── close-options.txt
│ ├── configuration.txt
│ ├── cookie-options.txt
│ ├── DeviceAtlas-device-detection.txt
│ ├── intro.txt
│ ├── linux-syn-cookies.txt
│ ├── lua.txt
│ ├── management.txt
│ ├── netscaler-client-ip-insertion-protocol.txt
│ ├── network-namespaces.txt
│ ├── peers.txt
│ ├── peers-v2.0.txt
│ ├── proxy-protocol.txt
│ ├── regression-testing.txt
│ ├── seamless_reload.txt
│ ├── SOCKS4.protocol.txt
│ ├── SPOE.txt
│ └── WURFL-device-detection.txt
├── sbin
│ └── haproxy
└── share
└── man
└── man1
└── haproxy.1
6 directories, 22 files
验证HAProxy版本
#验证HAProxy版本：
[root@centos7 ~]#which haproxy
/usr/sbin/haproxy
[root@centos7 ~]#haproxy -v
HA-Proxy version 2.1.3 2020/02/12 - https://haproxy.org/
Status: stable branch - will stop receiving fixes around Q1 2021.
Known bugs: http://www.haproxy.org/bugs/bugs-2.1.3.html
[root@centos7 ~]#haproxy -v
HA-Proxy version 2.0.14 2020/04/02 - https://haproxy.org/
[root@centos7 ~]#haproxy -V
HA-Proxy version 2.0.14 2020/04/02 - https://haproxy.org/
Usage : haproxy [-f <cfgfile|cfgdir>]* [ -vdVD ] [ -n <maxconn> ] [ -N <maxpconn> ]
[ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]
-v displays version ; -vv shows known build options.
-d enters debug mode ; -db only disables background mode.
-dM[<byte>] poisons memory with <byte> (defaults to 0x50)
-V enters verbose mode (disables quiet mode)
-D goes daemon ; -C changes to <dir> before loading files.
-W master-worker mode.
-Ws master-worker mode with systemd notify support.
-q quiet mode : don't display messages
-c check mode : only check config files and exit
-n sets the maximum total # of connections (uses ulimit -n)
-m limits the usable amount of memory (in MB)
-N sets the default, per-proxy maximum # of connections (0)
-L set local peer name (default to hostname)
-p writes pids of all children to this file
-de disables epoll() usage even when available
-dp disables poll() usage even when available
-dS disables splice usage (broken on old kernels)
-dG disables getaddrinfo() usage
-dR disables SO_REUSEPORT usage
-dr ignores server address resolution failures
-dV disables SSL verify on servers side
-sf/-st [pid ]* finishes/terminates old pids.
-x <unix_socket> get listening sockets from a unix socket
-S <bind>[,<bind options>...] new master CLI
[root@centos7 ~]#haproxy -vv
HA-Proxy version 2.1.3 2020/02/12 - https://haproxy.org/
Status: stable branch - will stop receiving fixes around Q1 2021.
Known bugs: http://www.haproxy.org/bugs/bugs-2.1.3.html
Build options :
TARGET = linux-glibc
CPU = generic
CC = gcc
CFLAGS = -m64 -march=x86-64 -O2 -g -fno-strict-aliasing -Wdeclaration-after-statement -fwrapv -Wno-unused-label -Wno-sign-compare -Wno-unused-parameter -Wno-old-style-declaration -Wno-ignored-qualifiers -Wno-clobbered -Wno-missing-field-initializers -Wtype-limits
OPTIONS = USE_PCRE=1 USE_OPENSSL=1 USE_LUA=1 USE_ZLIB=1 USE_SYSTEMD=1
Feature list : +EPOLL -KQUEUE -MY_EPOLL -MY_SPLICE +NETFILTER +PCRE -PCRE_JIT -PCRE2 -PCRE2_JIT +POLL -PRIVATE_CACHE +THREAD -PTHREAD_PSHARED -REGPARM -STATIC_PCRE -STATIC_PCRE2 +TPROXY +LINUX_TPROXY +LINUX_SPLICE +LIBCRYPT +CRYPT_H -VSYSCALL +GETADDRINFO +OPENSSL +LUA +FUTEX +ACCEPT4 -MY_ACCEPT4 +ZLIB -SLZ +CPU_AFFINITY +TFO +NS +DL +RT -DEVICEATLAS -51DEGREES -WURFL +SYSTEMD -OBSOLETE_LINKER +PRCTL +THREAD_DUMP -EVPORTS
Default settings :
bufsize = 16384, maxrewrite = 1024, maxpollevents = 200
Built with multi-threading support (MAX_THREADS=64, default=4).
Built with OpenSSL version : OpenSSL 1.0.2k-fips 26 Jan 2017
Running on OpenSSL version : OpenSSL 1.0.2k-fips 26 Jan 2017
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports : SSLv3 TLSv1.0 TLSv1.1 TLSv1.2
Built with Lua version : Lua 5.3.5
Built with network namespace support.
Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND
Built with PCRE version : 8.32 2012-11-30
Running on PCRE version : 8.32 2012-11-30
PCRE library supports JIT : no (USE_PCRE_JIT not set)
Encrypted password support via crypt(3): yes
Built with zlib version : 1.2.7
Running on zlib version : 1.2.7
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
Available polling systems :
epoll : pref=300, test result OK
poll : pref=200, test result OK
select : pref=150, test result OK
Total: 3 (3 usable), will use epoll.
Available multiplexer protocols :
(protocols marked as <default> cannot be specified using 'proto' keyword)
h2 : mode=HTTP side=FE|BE mux=H2
fcgi : mode=HTTP side=BE mux=FCGI
<default> : mode=HTTP side=FE|BE mux=H1
<default> : mode=TCP side=FE|BE mux=PASS
Available services : none
Available filters :
[SPOE] spoe
[CACHE] cache
[FCGI] fcgi-app
[TRACE] trace
[COMP] compression
HAProxy启动脚本
[root@centos7 ~]#cat /usr/lib/systemd/system/haproxy.service
[Unit]
Description=HAProxy Load Balancer
After=syslog.target network.target
[Service]
ExecStartPre=/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c -q
ExecStart=/usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /var/lib/haproxy/haproxy.pid
ExecReload=/bin/kill -USR2 $MAINPID
[Install]
WantedBy=multi-user.target
#默认缺少配置文件，无法启动
[root@centos7 ~]#systemctl daemon-reload
[root@centos7 ~]#systemctl start haproxy
Job for haproxy.service failed because the control process exited with error code. See "systemctl status haproxy.service" and "journalctl -xe" for details.
[root@centos7 ~]#tail /var/log/messages
Mar 30 22:28:50 centos7 systemd: haproxy.service: control process exited, code=exited status=1
Mar 30 22:28:50 centos7 systemd: Failed to start HAProxy Load Balancer.
Mar 30 22:28:50 centos7 systemd: Unit haproxy.service entered failed state.
Mar 30 22:28:50 centos7 systemd: haproxy.service failed.
Mar 30 22:28:54 centos7 systemd: Starting HAProxy Load Balancer...
Mar 30 22:28:54 centos7 haproxy: [ALERT] 089/222854 (28223) : Cannot open configuration file/directory /etc/haproxy/haproxy.cfg : No such file or directory
Mar 30 22:28:54 centos7 systemd: haproxy.service: control process exited, code=exited status=1
Mar 30 22:28:54 centos7 systemd: Failed to start HAProxy Load Balancer.
Mar 30 22:28:54 centos7 systemd: Unit haproxy.service entered failed state.
Mar 30 22:28:54 centos7 systemd: haproxy.service failed.
配置文件
#查看配置文件范例
[root@centos7 ~]#tree /usr/local/src/haproxy-2.1.3/examples/
/usr/local/src/haproxy-2.1.3/examples/
├── acl-content-sw.cfg
├── content-sw-sample.cfg
├── errorfiles
│ ├── 400.http
│ ├── 403.http
│ ├── 408.http
│ ├── 500.http
│ ├── 502.http
│ ├── 503.http
│ ├── 504.http
│ └── README
├── haproxy.init
├── option-http_proxy.cfg
├── socks4.cfg
├── transparent_proxy.cfg
└── wurfl-example.cfg
1 directory, 15 files
#创建自定义的配置文件
[root@centos7 ~]# mkdir /etc/haproxy
[root@centos7 ~]# vim /etc/haproxy/haproxy.cfg
global
maxconn 100000
chroot /apps/haproxy
stats socket /var/lib/haproxy/haproxy.sock mode 600 level admin
#uid 99
#gid 99
user haproxy
group haproxy
daemon
#nbproc 4
#cpu-map 1 0
#cpu-map 2 1
#cpu-map 3 2
#cpu-map 4 3
pidfile /var/lib/haproxy/haproxy.pid
log 127.0.0.1 local2 info
defaults
option http-keep-alive
option forwardfor
maxconn 100000
mode http
timeout connect 300000ms
timeout client 300000ms
timeout server 300000ms
listen stats
mode http
bind 0.0.0.0:9999
stats enable
log global
stats uri /haproxy-status
stats auth haadmin:123456
listen web_port
bind 10.0.0.7:80
mode http
log global
server web1 127.0.0.1:8080 check inter 3000 fall 2 rise 5启动haproxy
[root@centos7 ~]# mkdir /var/lib/haproxy
#[root@centos7 ~]# chown -R 99.99 /var/lib/haproxy/
[root@centos7 ~]# useradd -r -s /sbin/nologin -d /var/lib/haproxy haproxy
[root@centos7 ~]# systemctl enable --now haproxy验证haproxy状态
haproxy.cfg文件中定义了chroot、pidfile、user、group等参数，如果系统没有相应的资源会导致haproxy无法启动，具体参考日志文件 /var/log/messages
[root@centos7 ~]#systemctl status haproxy
● haproxy.service - HAProxy Load Balancer
Loaded: loaded (/usr/lib/systemd/system/haproxy.service; disabled; vendor preset: disabled)
Active: active (running) since Mon 2020-03-30 20:45:20 CST; 4min 45s ago
Process: 1362 ExecStartPre=/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c -q (code=exited, status=0/SUCCESS)
Main PID: 1363 (haproxy)
CGroup: /system.slice/haproxy.service
├─1363 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /var/lib/haproxy/haproxy.pid
└─1366 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /var/lib/haproxy/haproxy.pid
Mar 30 20:45:20 centos7.wangxiaochun.com systemd[1]: Starting HAProxy Load Balancer...
Mar 30 20:45:20 centos7.wangxiaochun.com systemd[1]: Started HAProxy Load Balancer.
Mar 30 20:45:20 centos7.wangxiaochun.com haproxy[1363]: [NOTICE] 089/204520 (1363) : New worker #1 (1366...ked
Mar 30 20:45:20 centos7.wangxiaochun.com haproxy[1363]: [WARNING] 089/204520 (1366) : Server web_port/we...ue.
Mar 30 20:45:20 centos7.wangxiaochun.com haproxy[1363]: [ALERT] 089/204520 (1366) : proxy 'web_port' has...le!
Hint: Some lines were ellipsized, use -l to show in full.
[root@centos7 ~]# pstree -p |grep haproxy
|-haproxy(28101)---haproxy(28105)查看haproxy的状态页面
浏览器访问：http://haproxy-server:9999/haproxy-status
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