Docker 安装 RabbitMQ，自定义数据卷位置启动失败，分析过程

Docker 安装 RabbitMQ，自定义数据卷位置启动失败，分析过程

问题描述

• 运行docker命令，RabbitMQ启动失败，且没有特别错误日志

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/plugins:/opt/rabbitmq/plugins -v /xzlawin/mydocker/rabbitmq/volume/5672/log:/var/log/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/data:/var/lib/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/config:/etc/rabbitmq -e RABBITMQ_DEFAULT_USER=guest -e RABBITMQ_DEFAULT_PASS=guest 6c3c2a225947

分析原因

• 容器内的文件未同步到数据卷映射的目录上，文件缺失，导致启动失败

分析步骤一，运行docker命令，使用默认数据卷位置，启动成功

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq 6c3c2a225947

• 查看容器ID

docker ps

• 查看数据卷信息

docker inspect [容器ID]

控制台显示

"Mounts": [
            {
                "Type": "volume",
                "Name": "rabbitmq_log",
                "Source": "/var/lib/docker/volumes/rabbitmq_log/_data",
                "Destination": "/var/log/rabbitmq",
                "Driver": "local",
                "Mode": "z",
                "RW": true,
                "Propagation": ""
            },
            {
                "Type": "volume",
                "Name": "rabbitmq_plugins",
                "Source": "/var/lib/docker/volumes/rabbitmq_plugins/_data",
                "Destination": "/opt/rabbitmq/plugins",
                "Driver": "local",
                "Mode": "z",
                "RW": true,
                "Propagation": ""
            },
            {
                "Type": "volume",
                "Name": "rabbitmq_config",
                "Source": "/var/lib/docker/volumes/rabbitmq_config/_data",
                "Destination": "/etc/rabbitmq",
                "Driver": "local",
                "Mode": "z",
                "RW": true,
                "Propagation": ""
            },
            {
                "Type": "volume",
                "Name": "rabbitmq_data",
                "Source": "/var/lib/docker/volumes/rabbitmq_data/_data",
                "Destination": "/var/lib/rabbitmq",
                "Driver": "local",
                "Mode": "z",
                "RW": true,
                "Propagation": ""
            }
        ],

• 删除容器

docker stop [容器ID]
docker ps -a [容器ID]
docker rm -f [容器ID]

分析步骤二，指定默认数据卷位置，启动成功

docker run -d \
--name rabbitmq \
-p 5672:5672 \
-p 15672:15672 \
-e RABBITMQ_DEFAULT_USER=guest \
-e RABBITMQ_DEFAULT_PASS=guest \
-v /var/lib/docker/volumes/rabbitmq_config/_data:/etc/rabbitmq \
-v /var/lib/docker/volumes/rabbitmq_data/_data:/var/lib/rabbitmq \
-v /var/lib/docker/volumes/rabbitmq_log/_data:/var/log/rabbitmq \
-v /var/lib/docker/volumes/rabbitmq_plugins/_data:/opt/rabbitmq/plugins \
rabbitmq:management

• 删除容器

docker stop [容器ID]
docker ps -a [容器ID]
docker rm -f [容器ID]

分析步骤三，指定自定义数据卷位置，启动失败

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/plugins:/opt/rabbitmq/plugins -v /xzlawin/mydocker/rabbitmq/volume/5672/log:/var/log/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/data:/var/lib/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/config:/etc/rabbitmq -e RABBITMQ_DEFAULT_USER=guest -e RABBITMQ_DEFAULT_PASS=guest 6c3c2a225947

• 删除容器

docker stop [容器ID]
docker ps -a [容器ID]
docker rm -f [容器ID]

分析步骤四，查看自定义数据卷文件，发现文件没有同步目录为空

ll /xzlawin/mydocker/rabbitmq/volume/5672/plugins
ll /xzlawin/mydocker/rabbitmq/volume/5672/log
ll /xzlawin/mydocker/rabbitmq/volume/5672/data
ll /xzlawin/mydocker/rabbitmq/volume/5672/config

解决方法

• 将默认数据卷文件，复制到自定义数据卷位置，启动成功

解决步骤一， 将默认数据卷文件，复制到自定义数据卷位置，启动失败

• 将默认数据卷文件，复制到自定义数据卷位置

cp -r /var/lib/docker/volumes/rabbitmq_log/_data/* /xzlawin/mydocker/rabbitmq/volume/5672/log
cp -r /var/lib/docker/volumes/rabbitmq_plugins/_data/* /xzlawin/mydocker/rabbitmq/volume/5672/plugins
cp -r /var/lib/docker/volumes/rabbitmq_config/_data/* /xzlawin/mydocker/rabbitmq/volume/5672/config
cp -r /var/lib/docker/volumes/rabbitmq_data/_data/* /xzlawin/mydocker/rabbitmq/volume/5672/data

• 指定数据卷位置，启动失败

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/plugins:/opt/rabbitmq/plugins -v /xzlawin/mydocker/rabbitmq/volume/5672/log:/var/log/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/data:/var/lib/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/config:/etc/rabbitmq -e RABBITMQ_DEFAULT_USER=guest -e RABBITMQ_DEFAULT_PASS=guest 6c3c2a225947

解决步骤二，查询日志，分析启动失败原因

• 查询日志，发现log目录没有权限

docker logs -t --tail 50 [容器ID]

failed to open log file at '/var/log/rabbitmq/rabbit@ab5217e3f168_upgrade.log', reason: permission denied

• 查看原数据卷目录是777权限

ll /var/lib/docker/volumes/rabbitmq_log/

显示

drwxrwxrwx 2 polkitd input 123 Jul 14 02:17 _data

• 自定义日志数据卷目录，赋予777权限

chmod 777 /xzlawin/mydocker/rabbitmq/volume/5672/log

• 删除容器

docker stop [容器ID]
docker ps -a [容器ID]
docker rm -f [容器ID]

解决步骤三，指定自定义数据卷位置，启动成功

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/plugins:/opt/rabbitmq/plugins -v /xzlawin/mydocker/rabbitmq/volume/5672/log:/var/log/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/data:/var/lib/rabbitmq -v /xzlawin/mydocker/rabbitmq/volume/5672/config:/etc/rabbitmq -e RABBITMQ_DEFAULT_USER=guest -e RABBITMQ_DEFAULT_PASS=guest 6c3c2a225947