dockerfile部署haproxy

使用dockerfile编写haproxy镜像
目录结构

[root@docker /]# tree /haproxy/
/haproxy/
├── dockerfile
├── entrypoint.sh
└── files
    ├── haproxy-2.5.0.tar.gz
    ├── haproxy.cfg
    └── install.sh

[root@docker ~]# tree /config/
/config/
└── RSe.txt

[root@docker /]# cat haproxy/files/install.sh 
 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 TARGET=linux-glibc  
      USE_OPENSSL=1  
      USE_ZLIB=1  
      USE_PCRE=1  
      USE_SYSTEMD=1 && 
make install PREFIX=/usr/local/haproxy && 
 cp haproxy /usr/sbin/
 echo 'net.ipv4.ip_nonlocal_bind = 1' >>  /etc/sysctl.conf
 echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf

mkdir -p /usr/local/haproxy/conf
 yum -y remove make gcc gcc-c++ && 
 rm -rf /tmp/* /var/cache/*

[root@docker ~]# cat /haproxy/entrypoint.sh 
#!/bin/bash

cat > /usr/local/haproxy/conf/haproxy.cfg <> /usr/local/haproxy/conf/haproxy.cfg < 
dockerfile 
[root@docker ~]# cat /haproxy/dockerfile 
FROM centos
LABEL MAINTAINER='aoman xx@163.com'

ENV version 2.5.0
ENV PATH /usr/local/harpoxy/sbin:$PATH

ADD files/haproxy-${version}.tar.gz /usr/src/
ADD files/install.sh /tmp/
ADD entrypoint.sh /

RUN ["/bin/bash","-c","/tmp/install.sh"]

WORKDIR /usr/local/haproxy
EXPOSE 80 8189

CMD ["/entrypoint.sh"]

 
RSe.txt 
[root@localhost ~]# cat /config/RSe.txt 
172.17.0.3
172.17.0.4
 
生成镜像
 
[root@docker ~]# docker build -t xm17671855780/haproxy:v0.2 /haproxy/
Sending build context to Docker daemon  3.827MB
Step 1/11 : FROM centos
 ---> 5d0da3dc9764
Step 2/11 : LABEL MAINTAINER='aoman xx@163.com'
 ---> Using cache
 ---> 900e2c5549fa
Step 3/11 : ENV version 2.5.0
 ---> Using cache
 ---> 8642325d3599
Step 4/11 : ENV PATH /usr/local/harpoxy/sbin:$PATH
 ---> Using cache
 ---> c2c825fd7348
Step 5/11 : ADD files/haproxy-${version}.tar.gz /usr/src/
 ---> Using cache
 ---> 07369fd4754d
Step 6/11 : ADD files/install.sh /tmp/
 ---> Using cache
 ---> 6ee8b8ec5cc6
Step 7/11 : ADD entrypoint.sh /
 ---> Using cache
 ---> 68f6e78e3860
Step 8/11 : RUN ["/bin/bash","-c","/tmp/install.sh"]
 ---> Using cache
 ---> 51998b23bd21
Step 9/11 : WORKDIR /usr/local/haproxy
 ---> Using cache
 ---> d62bac32629c
Step 10/11 : EXPOSE 80 8189
 ---> Using cache
 ---> 562517200529
Step 11/11 : CMD ["/entrypoint.sh"]
 ---> Running in 223dc75638e7
Removing intermediate container 223dc75638e7
 ---> 94aa6c820c5c
Successfully built 94aa6c820c5c
Successfully tagged xm17671855780/haproxy:v0.2


 
使用新创建的镜像来运行一个haproxy容器,并映射80端口和8189端口
 
[root@docker ~]# docker images
REPOSITORY                 TAG       IMAGE ID       CREATED          SIZE
xm17671855780/haproxy     v0.2      94aa6c820c5c   12 minutes ago   410MB
xm17671855780/file_httpd   v0.2      a563454c4a5f   2 days ago       701MB
centos                     latest    5d0da3dc9764   2 months ago     231MB

[root@docker ~]# docker run -dit --name haproxy1 -v /config/:/tmp -p 80:80 -p 8189:8189 94aa6c820c5c
14c8f4f71700e28c07ee8e4e1eef1701250006e2080665705c724ff28c1a5a7a

[root@docker ~]# docker exec -it haproxy1 /bin/bash
[root@14c8f4f71700 haproxy]# ss -anlt
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:*             
                 
[root@5d6cb0e1b29e haproxy]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
50: eth0@if51:  mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:05 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.5/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever

 
使用httpd镜像运行两个httpd
 
[root@docker ~]# docker images
REPOSITORY                 TAG       IMAGE ID       CREATED          SIZE
xm17671855780/haproxy     v0.2      94aa6c820c5c   12 minutes ago   410MB
xm17671855780/file_httpd   v0.2      a563454c4a5f   2 days ago       701MB
centos                     latest    5d0da3dc9764   2 months ago     231MB

[root@docker files]# docker run -dit --name httpd1 a563454c4a5f
[root@docker ~]# docker exec -it httpd1 /bin/bash
[root@25932175f666 src]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
44: eth0@if45:  mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
[root@25932175f666 src]# cat /usr/local/apache/htdocs/index.html 
It works!

 
[root@docker ~]# docker images
REPOSITORY                 TAG       IMAGE ID       CREATED          SIZE
xm17671855780/haproxy     v0.2      94aa6c820c5c   12 minutes ago   410MB
xm17671855780/file_httpd   v0.2      a563454c4a5f   2 days ago       701MB
centos                     latest    5d0da3dc9764   2 months ago     231MB
[root@docker files]# docker run -dit --name httpd2 a563454c4a5f 
92e0ca6adc15eacf3b7a1aef54bfd4bd79b7c7e148df7a0f534dc224169ba09f

[root@docker files]# docker exec -it httpd2 /bin/bash
[root@92e0ca6adc15 src]# ls
apr-1.7.0  apr-util-1.6.1  debug  httpd-2.4.48  kernels
[root@92e0ca6adc15 src]# cd /usr/local/apache/htdocs/
[root@92e0ca6adc15 htdocs]# ls
index.html

[root@92e0ca6adc15 htdocs]# echo "web test!" > index.html 
[root@92e0ca6adc15 htdocs]# cat index.html 
web test!

[root@92e0ca6adc15 htdocs]# ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
46: eth0@if47:  mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:04 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.4/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever

 
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