Dockerfile部署haproxy

創建nginx、httpd容器

[root@localhost ~]# docker images
REPOSITORY         TAG       IMAGE ID       CREATED          SIZE
httpd              v0.1      3709a35b5387   15 minutes ago   423MB
nginx              v0.1      45d2af2e6e0f   27 minutes ago   549MB
centos             latest    5d0da3dc9764   2 months ago     231MB

// nginx
[root@localhost ~]# docker run -itd --name nginx nginx:v0.1 /start.sh
31c71361384a121630a4d14b525a0adac65c9c1694a5a0892a0140aad36802a3

[root@localhost ~]# docker exec -it nginx /bin/bash
[root@31c71361384a /]# 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:*                                                                 
[root@31c71361384a /]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> 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
35: eth0@if36: <BROADCAST,MULTICAST,UP,LOWER_UP> 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 172.17.0.2/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever

// httpd
[root@localhost opt]# docker run -d --name httpd httpd:v0.1
27e9997db224f1074f2d686cedb7e8be0a53af600b4b833afbf94bad9f0fc16a
[root@localhost opt]# docker exec -it httpd /bin/bash
[root@27e9997db224 apache]# 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:*                                                                 
[root@27e9997db224 apache]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> 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
29: eth0@if30: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:03 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

目錄結構

[root@localhost ~]# tree haproxy/
haproxy/
|-- Dockerfile
`-- files
    |-- haproxy-2.4.0.tar.gz
    |-- haproxy-2.5.0.tar.gz
    |-- haproxy.cfg
    |-- install.sh
    `-- start.sh

1 directory, 6 files

Dockerfile檔案

[root@localhost ~]# cat haproxy/Dockerfile 
// 基礎鏡像
FROM centos

// 作者資訊
LABEL MAINTAINER “gaofan1225 123@qq.com”

// 環境變數
ENV haproxy_version 2.5.0

// 傳輸檔案
ADD files/haproxy-${haproxy_version}.tar.gz  /usr/src
ADD files/haproxy.cfg  /usr/local/haproxy/conf/haproxy.cfg
ADD files/start.sh  /scripts/
ADD files/install.sh /scripts/

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

// 暴露埠
EXPOSE 80 8189

// 啟動命令
CMD ["/scripts/start.sh"]

安裝腳本

[root@localhost ~]# cd haproxy/files/
[root@localhost files]# ls
haproxy-2.5.0.tar.gz
[root@localhost files]# touch install.sh
[root@localhost files]# chmod +x install.sh
[root@localhost files]# cat 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 $2}'  /etc/os-release).repo 
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo 
yum clean all && yum makecache 
yum -y install make gcc gcc-c++ pcre-devel bzip2-devel openssl-devel systemd-devel
useradd -r -M -s /sbin/nologin haproxy 
cd /usr/src/haproxy-${haproxy_version}  
make clean && \
        make -j $(nproc)  \
        TARGET=linux-glibc  \
        USE_OPENSSL=1  \
        USE_ZLIB=1  \
        USE_PCRE=1  \
        USE_SYSTEMD=1 && \
        make install PREFIX=/usr/local/haproxy 
cp haproxy  /usr/sbin/  
echo 'net.ipv4.ip_nonlocal_bind = 1' >>  /etc/sysctl.conf 
echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
rm -rf /usr/src/haproxy-${haproxy_version/  /var/cache/*
yum -y remove make gcc gcc-c++

啟動服務腳本

[root@localhost files]# touch start.sh
[root@localhost files]# chmod +x start.sh 
[root@localhost files]# cat start.sh 
#!/bin/bash

haproxy -f /usr/local/haproxy/conf/haproxy.cfg
/bin/bash

撰寫組態檔

[root@localhost files]# vim haproxy.cfg
#--------------全域配置----------------
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
#--------------統計頁面配置------------------
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設定-----------------------
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 web1 172.17.0.2:80 check inter 2000 fall 5   
    server web2 172.17.0.3:80 check inter 2000 fall 5
    #server web01 192.168.80.102:80 cookie web01 check inter 2000 fall 5   

構建haproxy鏡像

[root@localhost ~]# docker build -t haproxy:v0.1 haproxy/
Successfully built afaead465206
Successfully tagged haproxy:v0.1

創建haproxy容器

[root@localhost ~]# docker images
REPOSITORY         TAG       IMAGE ID       CREATED          SIZE
haproxy            v0.1      afaead465206   4 minutes ago    412MB
httpd              v0.1      3709a35b5387   15 minutes ago   423MB
nginx              v0.1      45d2af2e6e0f   27 minutes ago   549MB
centos             latest    5d0da3dc9764   2 months ago     231MB

[root@localhost ~]# docker run -itd --name haproxy -p 80:80 haproxy:v0.1
35179537b8345e14a6d2abb61ad6b1f7655a0e26d04963d51ec39c1eeed17781
[root@localhost ~]# docker exec -it haproxy /bin/bash
[root@35179537b834 /]# 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:*                                                                 
[root@35179537b834 /]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> 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
41: eth0@if42: <BROADCAST,MULTICAST,UP,LOWER_UP> 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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