Docker入门（五）- link连接容器

link连接容器

当我们把每个单独的容器串起来就是我们的整个环境了

连接前两篇文章生成的mysql和redis容器

➜  docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
db6d62ec29e0        redis:3.2.8         "docker-entrypoint..."   5 hours ago         Up 5 hours          0.0.0.0:7001->6379/tcp   redis3.2.8
e41193fe394a        mysql:5.7           "docker-entrypoint..."   7 hours ago         Up 7 hours          0.0.0.0:3307->3306/tcp   mysql5.7

1.在被连接的redis容器中添加key作为后续验证依据

➜  docker exec -ti db6d62ec29e0 /bin/bash
root@db6d62ec29e0:/data# redis-cli
127.0.0.1:6379> set a1 aaa
OK
127.0.0.1:6379> get a1
"aaa"

2.在test_link容器中连接mysql和redis容器，--link=[容器names]:[新容器中的别名]，此处测试例子为--link=redis3.2.8:redis

➜  docker run --name=test_link --link=mysql5.7:db --link=redis3.2.8:redis -d -t -i redis:3.2.8                                                     42f2bf262df322430f3f2a18e6284268cd5d3fcffcefe6557fbd4ccbf70ee46e

3.进入test_link容器，并作验证。(同样方法测试mysql)

➜  docker exec -ti 42f2bf262df3 /bin/bash
root@42f2bf262df3:/data# redis-cli -h redis
redis:6379> get a1
"aaa"