haproxy配置负载均衡（https）
一、haproxy介绍
HAProxy 提供高可用性、负载均衡以及基于 TCP 和 HTTP 应用的代理,支持虚拟主机,它是免费、快速并且可靠的一种解决方案.HAProxy 特别适用于那些负载特大的 web 站点, 这些站点通常又需要会话保持或七层处理.HAProxy 运行在当前的硬件上,完全可以支持数以万计的并发连接.并且它的运行模式使得它可以很简单安全的整合进您当前的架构中, 同时可以保护你的 web 服务器不被暴露到网络上.
二、haproxy安装
// 关闭防火墙和selinux
[root@DR ~]# systemctl disable --now firewalld.service
[root@DR ~]# setenforce 0
[root@DR ~]# getenforce
Disabled
// 安装服务
[root@DR ~]# yum -y install openssl make gcc pcre-devel bzip2-devel openssl-devel systemd-devel
// 创建用户
[root@DR ~]# useradd -r -M -s /sbin/nologin haproxy
// 上传haproxy包
[root@DR ~]# ls
公共 视频 文档 音乐 anaconda-ks.cfg initial-setup-ks.cfg
模板 图片 下载 桌面 haproxy-2.4.0.tar.gz
[root@DR ~]# tar xf haproxy-2.4.0.tar.gz
[root@DR ~]# ls
公共 视频 文档 音乐 anaconda-ks.cfg haproxy-2.4.0.tar.gz
模板 图片 下载 桌面 haproxy-2.4.0 initial-setup-ks.cfg
[root@DR ~]# cd haproxy-2.4.0/
[root@DR haproxy-2.4.0]# ls
addons CONTRIBUTING include Makefile scripts VERDATE
admin dev INSTALL README src VERSION
BRANCHES doc LICENSE reg-tests SUBVERS
CHANGELOG examples MAINTAINERS ROADMAP tests
[root@DR haproxy-2.4.0]# make clean
[root@DR haproxy-2.4.0]# make -j $(nproc) TARGET=linux-glibc USE_OPENSSL=1 USE_PCRE=1 USE_SYSTEMD=1
[root@DR haproxy-2.4.0]# make install prefix=/usr/local/haproxy
[root@DR haproxy-2.4.0]# which haproxy
/usr/local/sbin/haproxy
// 配置内核参数
[root@DR ~]# echo 'net.ipv4.ip_nonlocal_bind = 1' >> /etc/sysctl.conf
[root@DR ~]# echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
[root@DR ~]# sysctl -p
net.ipv4.ip_nonlocal_bind = 1
net.ipv4.ip_forward = 1
// 提供配置文件
[root@DR etc]# mkdir haproxy
[root@DR ~]# cd /etc/haproxy/
[root@DR haproxy]# cat > /etc/haproxy/haproxy.cfg <<EOF
> #--------------全局配置----------------
> global
> log 127.0.0.1 local0 info
> #log loghost local0 info
> maxconn 20480
> #chroot /usr/local/haproxy
> pidfile /var/run/haproxy.pid
> #maxconn 4000
> user haproxy
> group haproxy
> daemon
> #---------------------------------------------------------------------
> #common defaults that all the 'listen' and 'backend' sections will
> #use if not designated in their block
> #---------------------------------------------------------------------
> defaults
> mode http
> log global
> option dontlognull
> option httpclose
> option httplog
> #option forwardfor
> option redispatch
> balance roundrobin
> timeout connect 10s
> timeout client 10s
> timeout server 10s
> timeout check 10s
> maxconn 60000
> retries 3
> #--------------统计页面配置------------------
> listen admin_stats
> bind 0.0.0.0:8189
> stats enable
> mode http
> log global
> stats uri /haproxy_stats
> stats realm Haproxy\ Statistics
> stats auth admin:admin
> #stats hide-version
> stats admin if TRUE
> stats refresh 30s
> #---------------web设置-----------------------
> listen webcluster
> bind 0.0.0.0:80
> mode http
> #option httpchk GET /index.html
> log global
> maxconn 3000
> balance roundrobin
> cookie SESSION_COOKIE insert indirect nocache
> server web01 192.168.47.129:80 check inter 2000 fall 5
> server web02 192.168.47.130:80 check inter 2000 fall 5
> EOF
// haproxy.service文件编写
[root@DR ~]# cat > /usr/lib/systemd/system/haproxy.service <<EOF
> [Unit]
> Description=HAProxy Load Balancer
> After=syslog.target network.target
>
> [Service]
> ExecStartPre=/usr/local/sbin/haproxy -f /etc/haproxy/haproxy.cfg -c -q
> ExecStart=/usr/local/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid
> ExecReload=/bin/kill -USR2 $MAINPID
>
> [Install]
> WantedBy=multi-user.target
> EOF
[root@DR ~]# systemctl daemon-reload
// 启用日志
[root@DR ~]# vim /etc/rsyslog.conf
local0.* /var/log/haproxy.log //加入这行
// 重启服务
[root@DR ~]# systemctl restart rsyslog.service
// 启动服务
[root@DR ~]# systemctl restart haproxy
[root@DR ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 0.0.0.0:8189 0.0.0.0:*
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 128 0.0.0.0:80 0.0.0.0:*
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 [::]:111 [::]:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
在RS上安装httpd服务
[root@RS1 ~]# yum -y install httpd
[root@RS1 ~]# systemctl start httpd
[root@RS1 ~]# echo "wjj1" > /var/www/html/index.html
[root@RS2 ~]# yum -y install httpd
[root@RS2 ~]# systemctl start httpd
[root@RS2 ~]# echo "wjj2" > /var/www/html/index.html
证书生成
[root@RS1 ~]# yum -y install openssl
[root@RS1 ~]# mkdir ~/keys
[root@RS1 ~]# cd keys
[root@RS1 keys]# openssl genrsa -out passport.com.key 2048
Generating RSA private key, 2048 bit long modulus (2 primes)
.......................+++++
....................................................................+++++
e is 65537 (0x010001)
[root@RS1 keys]# openssl req -new -key passport.com.key -out passport.com.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:cn
State or Province Name (full name) []:hb
Locality Name (eg, city) [Default City]:wh
Organization Name (eg, company) [Default Company Ltd]:wjj
Organizational Unit Name (eg, section) []: test
Common Name (eg, your name or your server's hostname) []:localhost
Email Address []:
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:wjj123
An optional company name []:
[root@RS1 keys]# openssl x509 -req -days 3650 -in passport.com.csr -signkey passport.com.key -out passport.com.crt
Signature ok
subject=C = cn, ST = hb, L = wh, O = wjj, OU = test, CN = localhost, emailAddress =
Getting Private key
[root@RS1 keys]# ls
passport.com.crt passport.com.csr passport.com.key
// 将文件传输到RS2上面去
[root@RS1 keys]# scp passport.com.crt passport.com.key 192.168.47.130:/root/
The authenticity of host '192.168.47.130 (192.168.47.130)' can't be established.
ECDSA key fingerprint is SHA256:R1sHsPUKGqzvhsHbbdaEr0NcNxutf4OEUT3JuAss6m4.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.47.130' (ECDSA) to the list of known hosts.
root@192.168.47.130's password:
passport.com.crt 100% 1294 2.6MB/s 00:00
passport.com.key 100% 1679 2.3MB/s 00:00
[root@RS2 ~]# ls
公共 视频 文档 音乐 anaconda-ks.cfg passport.com.crt
模板 图片 下载 桌面 initial-setup-ks.cfg passport.com.key
RS1和RS2上配置https
[root@RS2 ~]# yum -y install mod_ssl
[root@RS2 ~]# mkdir /etc/httpd/ssl
[root@RS2 ~]# mv passport.com.* /etc/httpd/ssl/
[root@RS2 ~]# cd /etc/httpd/ssl/
[root@RS2 ssl]# ls
passport.com.crt passport.com.key
[root@RS2 ssl]# cd ..
[root@RS2 httpd]# ls
conf conf.d conf.modules.d logs modules run ssl state
[root@RS2 httpd]# cd conf.d
[root@RS2 conf.d]# ls
autoindex.conf README ssl.conf userdir.conf welcome.conf
[root@RS2 conf.d]# vim ssl.conf
# 取消下面两行注释
43 DocumentRoot "/var/www/html"
44 ServerName www.example.com:443
# 修改下面两行路径
85 SSLCertificateFile /etc/httpd/ssl/passport.com.crt
93 SSLCertificateKeyFile /etc/httpd/ssl/passport.com.key
// 重启服务
[root@RS2 ~]# systemctl restart httpd
[root@RS2 ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 [::]:111 [::]:*
LISTEN 0 128 *:80 *:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
LISTEN 0 128 *:443 *:*
// 修改配置文件
[root@DR haproxy]# cat haproxy.cfg
#--------------全局配置----------------
global
log 127.0.0.1 local0 info
#log loghost local0 info
maxconn 20480
#chroot /usr/local/haproxy
pidfile /var/run/haproxy.pid
#maxconn 4000
user haproxy
group haproxy
daemon
#---------------------------------------------------------------------
#common defaults that all the 'listen' and 'backend' sections will
#use if not designated in their block
#---------------------------------------------------------------------
defaults
mode tcp // 模式改为tcp
log global
option dontlognull
option httpclose
option httplog
#option forwardfor
option redispatch
balance roundrobin
timeout connect 10s
timeout client 10s
timeout server 10s
timeout check 10s
maxconn 60000
retries 3
#--------------统计页面配置------------------
listen admin_stats
bind 0.0.0.0:8189
stats enable
mode http
log global
stats uri /haproxy_stats
stats realm Haproxy\ Statistics
stats auth admin:admin
#stats hide-version
stats admin if TRUE
stats refresh 30s
#---------------web设置-----------------------
listen webcluster
bind 0.0.0.0:443 // 端口改为443
mode tcp // 模式改为tcp
#option httpchk GET /index.html
log global
maxconn 3000
balance roundrobin
cookie SESSION_COOKIE insert indirect nocache
server web01 192.168.47.129:443 check inter 2000 fall 5 //端口改为443
server web02 192.168.47.130:443 check inter 2000 fall 5 //端口改为443
#server web01 192.168.47.128:80 cookie web01 check inter 2000 fall 5
[root@DR ~]# systemctl restart haproxy.service
