1 镜像部署整体结构
[root@docker files]# tree /haproxy/
/haproxy/
├── Dockerfile
└── files
├── haproxy-2.5.0.tar.gz
├── haproxy.cfg
├── install.sh
└── start.sh
1 directory, 5 files
[root@docker files]#
2 Dockerfile编写
[root@docker haproxy]# cat Dockerfile
# 基础镜像
FROM centos
# 镜像维护者信息
LABEL MAINTAINER='xixi 1@2.com'
#变量
ENV version 2.5.0
#传文件到容器
ADD files/haproxy-${version}.tar.gz /usr/src/
ADD files/install.sh /tmp/
ADD files/start.sh /tmp/
ADD files/haproxy.cfg /etc/haproxy/
#镜像操作指令
RUN ["/bin/bash","-c","/tmp/install.sh"]
# 工作中目录
WORKDIR /usr/local/haproxy
#暴露端口
EXPOSE 80 8189
#启动命令
CMD ["/bin/bash","/tmp/start.sh"]
3 执行脚本编写
root@docker haproxy]# cat files/install.sh
#!/bin/bash
rm -rf /etc/yum.repos.d/*
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-$(awk -F '"' 'NR==5{print $2}' /etc/os-release).repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
yum -y install make gcc pcre-devel bzip2-devel openssl-devel systemd-devel
useradd -r -M -s /sbin/nologin haproxy
cd /usr/src/haproxy-${version}
make clean
make -j $(grep 'processor' /proc/cpuinfo |wc -l) \
TARGET=linux-glibc \
USE_OPENSSL=1 \
USE_ZLIB=1 \
USE_PCRE=1 \
USE_SYSTEMD=1 && \
make install PREFIX=/usr/local/haproxy
cp haproxy /usr/src
echo 'net.ipv4.ip_nonlocal_bind = 1' >> /etc/sysctl.conf
echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
yum -y remove gcc make
rm -rf /var/cache/*
rm -rf /usr/src/haproxy-${version}
[root@docker haproxy]#
4 启动脚本编写
[root@docker haproxy]# cat files/start.sh
#!/bin/sh
/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg
/bin/bash
[root@docker haproxy]#
5 haproxy配置文件
[root@docker haproxy]# cat files/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 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 192.168.10.1:80 check inter 2000 fall 5
server web02 192.168.10.2:80 check inter 2000 fall 5
#server web01 192.168.80.102:80 cookie web01 check inter 2000 fall 5
[root@docker haproxy]#
6 构建镜像
// 创建haproxy镜像
[root@Docker ~]# docker build -t haproxy:v2.0 haproxy/
[root@docker haproxy]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
haproxy v2.0 0a48c089ff0b 53 minutes ago 410MB
nginx latest f652ca386ed1 8 days ago 141MB
busybox latest d23834f29b38 10 days ago 1.24MB
httpd latest ad17c88403e2 3 weeks ago 143MB
centos latest 5d0da3dc9764 2 months ago 231MB
7 创建容器访问测试
[root@docker ~]# docker run -itd --name haproxy -P --rm haproxy:v2.0
bcfd0e7d144447a633f8ca4e0035aa040ef1e675970a25ae54542b727c9b1c66
[root@docker ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
bcfd0e7d1444 haproxy:v2.0 "/bin/bash /tmp/star…" 18 seconds ago Up 17 seconds 0.0.0.0:49158->80/tcp, :::49158->80/tcp, 0.0.0.0:49157->8189/tcp, :::49157->8189/tcp haproxy
[root@docker ~]# docker exec -it haproxy /bin/bash
[root@bcfd0e7d1444 haproxy]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:80 0.0.0.0:*
LISTEN 0 128 0.0.0.0:8189 0.0.0.0:*
## 创建一个nginx和httpd容器用haproxy来做调度器
[root@docker ~]# docker run -itd --name nginx nginx
[root@docker ~]# docker run -itd --name httpd httpd
[root@docker ~]# docker images
bcfd0e7d1444 haproxy:v2.0 "/bin/bash /tmp/star…" 18 seconds ago Up 17 seconds 0.0.0.0:49158->80/tcp, :::49158->80/tcp, 0.0.0.0:49157->8189/tcp, :::49157->8189/tcp haproxy
d86bbe61db41 nginx "/docker-entrypoint.…" 2 hours ago Up 2 hours 80/tcp a2
81142316f963 httpd "httpd-foreground" 2 hours ago Up 2 hours 80/tcp a1
[root@docker ~]# curl 192.168.10.3
<html><body><h1>It works!</h1></body></html>
[root@docker ~]# curl 192.168.10.3
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@docker ~]#
用本机IP加映射到本机的端口号来到web上访问
