dockerfile部署haproxy
使用dockerfile编写haproxy镜像目录结构[root@docker /]# tree /haproxy//haproxy/├── dockerfile└── files├── haproxy-2.4.0.tar.gz├── haproxy-2.5.0.tar.gz├── haproxy.cfg├── install.sh└── start.shinstall.sh[root@docke
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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
install.sh
[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/*
entrypoint.sh
[root@docker ~]# cat /haproxy/entrypoint.sh
#!/bin/bash
cat > /usr/local/haproxy/conf/haproxy.cfg <<EOF
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
EOF
Snu=1
for rs_ip in $(cat /tmp/RSe.txt);do
cat >> /usr/local/haproxy/conf/haproxy.cfg <<EOF
server web$Snu $rs_ip:80 check inter 2000 fall 5
EOF
let Snu++
done
/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/conf/haproxy.cfg
/bin/bash
dockerfile
[root@docker ~]# cat /haproxy/dockerfile
FROM centos
LABEL MAINTAINER='aoman xx@163.com'
ENV version 2.5.0
ENV PATH /usr/local/harpoxy/sbin:$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: <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
50: eth0@if51: <BROADCAST,MULTICAST,UP,LOWER_UP> 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: <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
44: eth0@if45: <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 172.17.0.3/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
[root@25932175f666 src]# cat /usr/local/apache/htdocs/index.html
<html><body><h1>It works!</h1></body></html>
[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: <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
46: eth0@if47: <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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