Dockerfile制作haproxy镜像
文章目录
结构目录
[root@localhost ~]# tree haproxy
haproxy
├── 1
├── Dockerfile
└── files
├── haproxy2.4.0.tar.gz
├── haproxy.cfg
├── haproxy.sh
├── run_haproxy.sh
└── sysctl.conf
1 directory, 7 files
查看结构目录内容
dockerfile配置文件
[root@localhost ~]# cd haproxy
[root@localhost haproxy]# cat Dockerfile
FROM centos
ENV version 2.4.0
WORKDIR /usr/local
ADD files/haproxy${version}.tar.gz /usr/local/
ADD files/haproxy.sh /usr/local
ADD files/haproxy.cfg /etc/haproxy/
ADD files/run_haproxy.sh /usr/local
ADD files/sysctl.conf /etc/
RUN ["/bin/bash","-c","/usr/local/haproxy.sh"]
EXPOSE 80
CMD ["/usr/local/run_haproxy.sh"]
安装haproxy配置文件
[root@localhost ~]# cd haproxy
[root@localhost haproxy]# ls files/
haproxy2.4.0.tar.gz haproxy.cfg haproxy.sh run_haproxy.sh sysctl.conf
[root@localhost haproxy]# cat files/haproxy.sh
#!/bin/bash
yum -y install make gcc pcre-devel bzip2-devel openssl-devel systemd-devel
useradd -r -M -s /sbin/nologin haproxy
cd /usr/local
tar xf haproxy2.4.0.tar.gz
cd haproxy-2.4.0
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/sbin/
配置各个负载的内核参数配置文件
[root@localhost files]# ls
haproxy-2.4.0.tar.gz haproxy.sh sysctl.conf
haproxy.cfg run_haproxy.sh
[root@localhost haproxy]# cat files/sysctl.conf
# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
net.ipv4.ip_nonlocal_bind = 1
net.ipv4.ip_forward = 1
提供haproxy配置文件
[root@localhost 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 web1 172.17.0.3:80 check inter 3000 fall 5
server web2 172.17.0.4:80 check inter 3000 fall 5
#server web01 192.168.80.102:80 cookie web01 check inter 2000 fall 5
配置容器启动脚本
[root@localhost haproxy]# cat files/run_haproxy.sh
#!/bin/bash
haproxy -f /etc/haproxy/haproxy.cfg
tail -f /etc/hosts
制作haproxy镜像
[root@localhost haproxy]# docker build -t haproxy:v1.3 .
[root@localhost haproxy]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
haproxy v1.3 78b11c5cc028 40 minutes ago 578MB
映射端口并进入容器查看端口是否起来
[root@localhost haproxy]# docker run -itd --name haproxy -p 2021:80 haproxy:v1.3
df35f4c0a3d2c8cbfedc00d2a6addd8690d5a60c897348f1bfaea676fced19b3
[root@localhost haproxy]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6488e4fab8eb haproxy:v1.3 "/usr/local/run_hapr…" 5 seconds ago Up 3 seconds
0.0.0.0:2021->80/tcp, :::2021->80/tcp haproxy
[root@localhost haproxy]# docker exec -it haproxy /bin/bash
[root@6488e4fab8eb local]# 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:*
在已有的镜像中运行一个httpd镜像和nginx镜像
[root@localhost haproxy]# docker run -d --name httpd best2001/httpd:v1.0
f839b45baf93e82e71393438049a5949ebb7fc1e2fce3a7e0678604b95ec1dee
[root@localhost haproxy]# docker run -d --name nginx best2001/nginx:v0.3
5052fb8620d88b201aee40512ce737569dd5d0b1f835e756c7ac9c3ab5830aa0
[root@localhost haproxy]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5052fb8620d8 best2001/nginx:v0.3 "/usr/local/nginx/sb…" 6 seconds ago Up 6 seconds nginx
f839b45baf93 best2001/httpd:v1.0 "/usr/local/apache/b…" 25 seconds ago Up 25 seconds 80/tcp httpd
6488e4fab8eb haproxy:v1.3 "/usr/local/run_hapr…" 3 minutes ago Up 3 seconds 0.0.0.0:2021->80/tcp, :::2021->80/tcp haproxy
访问测试
