docker-compose複数のコンテナ/サービスを管理
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## ： volume,
# docker volume create mysql-data
# docker volume create oracle-11g
## volumes:
[root@docker ~]# docker inspect registry.cn-hangzhou.aliyuncs.com/helowin/oracle_11g
"Image": "helowin/oracle_cmd",
"Volumes": {
"/home/oracle/app/oracle/oradata": {}
}
[root@docker ~]# docker inspect mysql
"Image": "mysql:5.7",
"Volumes": {
"/var/lib/mysql": {}
}
## docker-compose
[root@docker ~]# cat mysql-oracle.yaml
version: '3'
services:
mysql-docker:
image: mysql:5.7
container_name: mysql
environment:
MYSQL_ROOT_PASSWORD: '123456'
ports:
- 3306:3306
volumes:
- mysql-data:/var/lib/mysql
deploy:
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 3
oracle-docker:
image: registry.cn-hangzhou.aliyuncs.com/helowin/oracle_11g
container_name: oracle
ports:
- 1521:1521
volumes:
- oracle-11g:/home/oracle/app/oracle/oradata
volumes:
mysql-data:
oracle-11g:
## mysql, oracle
[root@docker ~]# cat /etc/rc.d/rc.local
#!/bin/bash
touch /var/lock/subsys/local
service docker start
COMPOSE_HTTP_TIMEOUT=200 docker-compose -f /root/mysql-oracle.yaml up -d >>/root/docker-db.log
vim docker-compose.yml
version: '3'
services:
mysql-docker:
image: mysql:5.7
environment:
MYSQL_ROOT_PASSWORD: '123456'
ports:
- 3307:3306
#- 3306
deploy:
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 3
mysqlを起動し、構文をテストします.
wang@wang-pc:~/txt/app$ docker-compose up
WARNING: Some services (mysql-docker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
WARNING: The Docker Engine you're using is running in swarm mode.
Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.
To deploy your application across the swarm, use `docker stack deploy`.
Starting app_mysql-docker_1 ... done
Attaching to app_mysql-docker_1
mysql-docker_1 | 2019-03-06T10:48:51.247271Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
mysql-docker_1 | 2019-03-06T10:48:51.249118Z 0 [Note] mysqld (mysqld 5.7.24) starting as process 1 ...
mysql-docker_1 | 2019-03-06T10:48:51.252724Z 0 [Note] InnoDB: PUNCH HOLE support available
mysqlを起動し、構文を検証
wang@wang-pc:~/txt/app$ docker-compose up
WARNING: Some services (mysql-docker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
WARNING: The Docker Engine you're using is running in swarm mode.
Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.
To deploy your application across the swarm, use `docker stack deploy`.
Starting app_mysql-docker_1 ... done
Attaching to app_mysql-docker_1
mysql-docker_1 | 2019-03-06T10:48:51.247271Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
mysql-docker_1 | 2019-03-06T10:48:51.249118Z 0 [Note] mysqld (mysqld 5.7.24) starting as process 1 ...
mysql-docker_1 | 2019-03-06T10:48:51.252724Z 0 [Note] InnoDB: PUNCH HOLE support available
2,docker-compose app,mysqlを起動
Webサービスを追加する構成はideaで以下のコードをa.jarにパッケージ化する
import java.sql.*;
public class MysqlTest {
public static void main(String[] args) throws SQLException {
// ： docker-mysql,
Connection conn = DriverManager.getConnection("jdbc:mysql://172.17.0.1:3307", "root", "123456");
Statement stm = conn.createStatement();
ResultSet result = stm.executeQuery("show databases");
while (result.next()){
String dbname = result.getString(1);
System.out.println(dbname);
}
}
}
a.jarを~/txt/app下にコピー
wang@wang-pc:~/txt/app$ ls
a.jar docker-compose.yml Dockerfile jdk.tar.gz
wang@wang-pc:~/txt/app$ cat docker-compose.yml
version: '3'
services:
mysql-docker:
image: mysql:5.7
environment:
MYSQL_ROOT_PASSWORD: '123456'
ports:
- 3307:3306
#- 3306
deploy:
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 3
app:
build: .
depends_on:
- mysql-docker
wang@wang-pc:~/txt/app$ cat Dockerfile
FROM centos
RUN mkdir /app
COPY a.jar /app
COPY jdk.tar.gz /app
WORKDIR /app
RUN tar -zxvf jdk.tar.gz
#CMD jdk1.8/bin/java -jar a.jar
ENTRYPOINT jdk1.8/bin/java -jar
まずmysqlを起動してからappを起動します
wang@wang-pc:~/txt/app$ docker-compose start mysql-docker
WARNING: Some services (mysql-docker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
Starting mysql-docker ... done
wang@wang-pc:~/txt/app$ docker-compose up
WARNING: Some services (mysql-docker) use the 'deploy' key, which will be ignored. Compose does not support 'deploy' configuration - use `docker stack deploy` to deploy to a swarm.
WARNING: The Docker Engine you're using is running in swarm mode.
Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.
To deploy your application across the swarm, use `docker stack deploy`.
app_mysql-docker_1 is up-to-date
Starting app_app_1 ... done
Attaching to app_mysql-docker_1, app_app_1
mysql-docker_1 | Initializing database
...
mysql-docker_1 | 2019-03-06T11:10:33.061616Z 0 [Note] mysqld: ready for connections.
mysql-docker_1 | Version: '5.7.24' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server (GPL)
app_1 | information_schema
app_1 | a
app_1 | b
app_1 | mysql
app_1 | performance_schema
app_1 | sys
mysql-docker_1 | 2019-03-06T11:10:35.048116Z 2 [Note] Aborted connection 2 to db: 'unconnected' user: 'root' host: '172.24.0.3' (Got an error reading communication packets)
app_app_1 exited with code 0