Dockerfile制作镜像_大数据系统

Dockerfile制作镜像
- dockerfile制作haproxy镜像
- - 目录结构
  - Dockerfile文件
  - files目录文件
  - 制作haproxy镜像
  - 测试
  - 查看

Dockerfile制作镜像 dockerfile制作haproxy镜像目录结构

[root@localhost haproxy]# tree
.
├── Dockerfile
└── files
    ├── haproxy-2.4.0.tar.gz
    ├── haproxy.cfg
    ├── haproxy.sh
    ├── run_haproxy.sh
    └── sysctl.conf

Dockerfile文件

[root@localhost haproxy]# cat Dockerfile 
FROM centos
LABEL MAINTAINER "yyy 123@com"

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"]

files目录文件

[root@localhost files]# tree
.
├── haproxy-2.4.0.tar.gz
├── haproxy.cfg
├── haproxy.sh
├── run_haproxy.sh
└── sysctl.conf

[root@localhost haproxy]# cat files/haproxy.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==2{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/local
cd 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/sbin/
[root@localhost files]# chmod +x haproxy.sh

haproxy.cfg文件

[root@localhost files]# cat 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

sysctl.conf文件

[root@localhost files]# cat 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

run_haproxy.sh

[root@localhost files]# cat run_haproxy.sh 
#!/bin/bash
haproxy -f /etc/haproxy/haproxy.cfg
tail -f /etc/hosts
[root@localhost files]# chmod +x run_haproxy.sh

制作haproxy镜像

[root@localhost haproxy]# docker build -t haproxy:v0.1 .
Sending build context to Docker daemon  3.602MB
Step 1/11 : FROM centos
 ---> 5d0da3dc9764
Step 2/11 : ENV version 2.4.0
 ---> Running in 14931f984d02
Removing intermediate container 14931f984d02
 ---> 2a6420f3d238
Step 3/11 : WORKDIR /usr/local
 ---> Running in 815abc60d5ce
Removing intermediate container 815abc60d5ce
 ---> 90adbb753f42
.................................
[root@localhost haproxy]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED         SIZE
haproxy      v0.1      949e1a86fb6b   3 minutes ago   578MB
busybox      latest    d23834f29b38   10 days ago     1.24MB
centos       8         5d0da3dc9764   2 months ago    231MB
centos       latest    5d0da3dc9764   2 months ago    231MB

测试

//这一步是从我自己的镜像仓库拉取了一个http的镜像
[root@localhost haproxy]# docker pull yzy0923/httpd:v0.01
v0.01: Pulling from yzy0923/httpd
a1d0c7532777: Already exists 
b71617e0b577: Pulling fs layer 
c12e8de6a34d: Downloading  56.27MB/170.5MB
v0.01: Pulling from yzy0923/httpd
a1d0c7532777: Already exists 
b71617e0b577: Pull complete 
c12e8de6a34d: Pull complete 
Digest: sha256:a5e7f7c00ccfab0b21819ebf36fa52d0ea39851968ccb1bd7f4ddaf9330f12ca
Status: Downloaded newer image for yzy0923/httpd:v0.01
docker.io/yzy0923/httpd:v0.01
[root@localhost haproxy]# docker images
REPOSITORY      TAG       IMAGE ID       CREATED          SIZE
haproxy         v0.1      949e1a86fb6b   14 minutes ago   578MB
yzy0923/httpd   v0.01     a88b702deaee   40 hours ago     701MB
busybox         latest    d23834f29b38   10 days ago      1.24MB
centos          8         5d0da3dc9764   2 months ago     231MB
centos          latest    5d0da3dc9764   2 months ago     231MB
[root@localhost haproxy]# cd

//创建目录存放不同的index.html文件进行测试
[root@localhost ~]# mkdir -p test/{html1,html2}
[root@localhost ~]# vim test/html1
[root@localhost ~]# vim test/html1/index.html
[root@localhost ~]# vim test/html2/index.html
[root@localhost ~]# cat test/html1/index.html
this web1 http

[root@localhost ~]# cat test/html2/index.html
this is web2 httpd


//用我们刚刚拉下来创建测试容器
[root@localhost ~]# docker run -d -v /root/test/html1:/usr/local/apache/htdocs --name web1 yzy0923/httpd:v0.01
e8089e31b65998d674318ccbc0abcec0c92cc49292075f213aa01e1d840e366b
[root@localhost ~]# docker run -d -v /root/test/html2:/usr/local/apache/htdocs --name web2 yzy0923/httpd:v0.01
51b1940589a37e6b8321e39139a5b0cdf428b5257d314c63131eb3b2e1cf9d7a
[root@localhost ~]# docker ps
ConTAINER ID   IMAGE                 COMMAND                  CREATED          STATUS          PORTS     NAMES
51b1940589a3   yzy0923/httpd:v0.01   "/usr/local/apache/b…"   8 seconds ago    Up 7 seconds              web2
e8089e31b659   yzy0923/httpd:v0.01   "/usr/local/apache/b…"   24 seconds ago   Up 23 seconds             web1

[root@localhost ~]# curl 172.17.0.3
this web1 http

[root@localhost ~]# curl 172.17.0.4
this is web2 httpd


//用刚刚创建的haproxy镜像创建容器
[root@localhost ~]# docker run -d -p 80:80 -p 8189:8189 --name haproxy haproxy:v0.1
adaa66ef2744bce2e80304ff81d78de3b8fe8b97562cbc8f91ddeb0ce6ddb8f7
[root@localhost ~]# docker ps
ConTAINER ID   IMAGE                 COMMAND                  CREATED          STATUS          PORTS                                                                          NAMES
adaa66ef2744   haproxy:v0.1          "/usr/local/run_hapr…"   14 minutes ago   Up 14 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:8189->8189/tcp, :::8189->8189/tcp   haproxy
51b1940589a3   yzy0923/httpd:v0.01   "/usr/local/apache/b…"   16 minutes ago   Up 16 minutes                                                                                  web2
e8089e31b659   yzy0923/httpd:v0.01   "/usr/local/apache/b…"   16 minutes ago   Up 16 minutes                                                                                  web1

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Dockerfile制作镜像

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