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docker-compose配置

程序员文章站 2024-02-25 14:55:51
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Docker Compose 是 Docker 官方编排（Orchestration）项目之一，负责快速的部署分布式应用。

这是我的docker images（local）：
上面的v1就是我封装的httpd

docker-compose配置

先用rhel7镜像封装一个有httpd的服务镜像：

docker-compose配置

Dockerfile文件：
FROM rhel7
MAINTAINER oo
ENV HOSTNAME web1
EXPOSE 80
COPY dvd.repo /etc/yum.repos.d/dvd.repo
RUN rpmdb --rebuilddb && yum install -y httpd && yum clean all
COPY web/index.html /var/www/html/index.html
CMD ["/usr/sbin/httpd", "-D", "FOREGROUND"]
dvd.repo文件：
[dvd]
name=rhel7.3
baseurl=http://172.25.5.250/rhel7.3
gpgcheck=0


[docker]
name=docker
baseurl=http://172.25.5.250/pub/yum
gpgcheck=0
创建images：rhel7:v1
[aaa@qq.com test]# docker build -t rhel7:v1 .
Sending build context to Docker daemon 4.608 kB
Step 1/8 : FROM rhel7
 ---> 0a3eb3fde7fd
Step 2/8 : MAINTAINER oo
 ---> Using cache
 ---> 45391a65a7b8
Step 3/8 : ENV HOSTNAME web1
 ---> Using cache
 ---> 60580fc7e680
Step 4/8 : EXPOSE 80
 ---> Using cache
 ---> d1277e1311f8
Step 5/8 : COPY dvd.repo /etc/yum.repos.d/dvd.repo
 ---> Using cache
 ---> cbaf2b135bdb
Step 6/8 : RUN rpmdb --rebuilddb && yum install -y httpd && yum clean all

------太长省略

Step 7/8 : COPY web/index.html /var/www/html/index.html
 ---> d18df941f38b
Removing intermediate container 198b410dc345
Step 8/8 : CMD /usr/sbin/httpd -D FOREGROUND
 ---> Running in f1e8ee77bee5
 ---> 91fc7d1a2364
Removing intermediate container f1e8ee77bee5
Successfully built 91fc7d1a2364

生成的镜像：

docker-compose配置

测试httpd：
[root@foundation5 test]# docker run -d --name vm1 rhel7:v1 
b0661d7e92fc495ada22c73e17648c3be33ae80fbba7de2c3882d3c5a1beff61
[root@foundation5 test]# docker inspect vm1

------太长省略

                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02"


[aaa@qq.com compose]# curl 172.17.0.2
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
[aaa@qq.com compose]# curl 172.17.0.2
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
[aaa@qq.com compose]# curl 172.17.0.2
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
<h1>www.westos.org</h1>
[aaa@qq.com compose]#
镜像没问题就可以创建集群了
docker-compose集群配置
创建haproxy集群
[root@foundation5 docker]# mkdir compose/

docker-compose配置

docker-compose.yml文件
apache:
    image: rhel7:v1
    expose:
        - 80
    volumes:
        - ./web:/var/www/html

nginx:
    image: nginx
    expose:
        - 80

haproxy:
    image: haproxy
    volumes:
        - ./haproxy:/usr/local/etc/haproxy
    links:
        - apache
        - nginx
    ports:
        - "8080:80"
    expose:
        - 80
haproxy配置文件
global
    log 127.0.0.1 local0
    log 127.0.0.1 local1 notice
defaults
    log global
    mode http
    option httplog
    option dontlognull
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms
    stats uri /status
frontend balancer
    bind 0.0.0.0:80
    default_backend web_backends
backend web_backends
    balance roundrobin
    server web1 apache:80 check
    server web2 nginx:80 check
启动测试：docker-compose up
命令下载：直接再官网下载，做个软连接放在bin下就OK了

docker-compose配置

[aaa@qq.com compose]# docker-compose up
Pulling haproxy (haproxy:)...
latest: Pulling from library/haproxy
be8881be8156: Already exists
6a9c22a0d424: Pull complete
0eaf021ab522: Pull complete
Digest: sha256:dd4f3144e9853042e7434294ce6b06b8366e2071ec235e75291d3b2dc290791b
Status: Downloaded newer image for haproxy:latest
Creating compose_apache_1 ... done
Creating compose_nginx_1  ... done
Creating compose_haproxy_1 ... done
Attaching to compose_apache_1, compose_nginx_1, compose_haproxy_1
apache_1   | AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.2. Set the 'ServerName' directive globally to suppress this message
nginx_1    | 2018/08/22 03:56:39 [error] 6#6: *1 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 172.17.0.4, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "172.25.5.250:8080"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:39 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:40 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:40 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:41 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:41 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:43 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:44 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:45 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:46 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:56:46 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
^CGracefully stopping... (press Ctrl+C again to force)
Stopping compose_haproxy_1 ... done
Stopping compose_nginx_1   ... done
Stopping compose_apache_1  ... done
[aaa@qq.com compose]# docker-compose up
Starting compose_nginx_1  ... done
Starting compose_apache_1 ... done
Starting compose_haproxy_1 ... done
Attaching to compose_nginx_1, compose_apache_1, compose_haproxy_1
apache_1   | AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.17.0.3. Set the 'ServerName' directive globally to suppress this message
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:58:07 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"
nginx_1    | 172.17.0.4 - - [22/Aug/2018:03:58:07 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0" "-"

实现负载均衡：

docker-compose配置
docker-compose配置
docker-compose配置

相关标签： docker compose 集群配置

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