1.创建三个装有mongo的docker容器，这里使用docker-compose，配置如下
mongo:
image: mongo
command: mongod -f /etc/mongo.conf
volumes:
- ${DATA_PATH_HOST}/mongo:/data/db
- ${CONF_PATH}/mongo/mongo_yaml.conf:/etc/mongo.conf
- ${CONF_PATH}/mongo/access.key:/etc/access.key
expose:
- 27017
ports:
- 27017:27017
networks:
- backend
mongo2:
image: mongo
command: mongod -f /etc/mongo.conf
volumes:
- ${DATA_PATH_HOST}/mongo2:/data/db
- ${CONF_PATH}/mongo/mongo_yaml.conf:/etc/mongo.conf
- ${CONF_PATH}/mongo/access.key:/etc/access.key
expose:
- 27017
ports:
- 27018:27017
networks:
- backend
mongo3:
image: mongo
command: mongod -f /etc/mongo.conf
volumes:
- ${DATA_PATH_HOST}/mongo3:/data/db
- ${CONF_PATH}/mongo/mongo_yaml.conf:/etc/mongo.conf
- ${CONF_PATH}/mongo/access.key:/etc/access.key
expose:
- 27017
ports:
- 27019:27017
networks:
- backend
其中mongo.conf 为yaml格式的mongodb配置文件，内容如下
processManagement:
fork: false
net:
bindIp: 127.0.0.1
port: 27017
storage:
dbPath: /data/db
systemLog:
#destination: file
#path: log/mongo27017.log
logAppend: true
storage:
journal:
enabled: true
replication:
oplogSizeMB: 500
replSetName: "r1"
secondaryIndexPrefetch: "all"
执行docker-compose up -d mongo mongo2 mongo3 创建三个mongo容器 并指定副本集 r1
2.
登入任意一台机器的MongoDB执行：因为是全新的副本集所以可以任意进入一台执行；要是有一台有数据，则需要在有数据上执行；要多台有数据则不能初始化。我个人是mongo中有数据但是mongo2和mong3是空的数据库，所以我登录mongo1进行副本集初始化。
执行命令 docker-compose exec mongo bash 进入容器
执行命令 mongo 在容器内部连接mongo
执行一下命令初始化副本集
> use admin
switched to db admin
> config = { "_id": "r1", "members": [{ "_id": 0, "host": "mongo:27017", "priority": 1 }, { "_id": 1, "host": "mongo2:27017", "priority": 1 }, { "_id": 2, "host": "mongo3:27017", "priority": 1 }] }
{
"_id" : "r1",
"members" : [
{
"_id" : 0,
"host" : "mongo:27017",
"priority" : 1
},
{
"_id" : 1,
"host" : "mongo2:27017",
"priority" : 1
},
{
"_id" : 2,
"host" : "mongo3:27017",
"priority" : 1
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"operationTime" : Timestamp(1539830924, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1539830924, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
副本集初始化完成，可以使用命令rs.status()查看当前副本集状态，至此mongodb副本集设置完成
3.加入鉴权机制，如果服务端需要开启auth认证，则在启动时通过keyFile三个节点之间的通信授权
使用命令生成keyFile文件
openssl rand -base64 745 > /docker/conf/mongo/mongo-keyfile
ch
如果服务器启动时加入了参数--keyFile = /docker/conf/mongo/mongo-keyfile 则mongo服务端启动时会自动开启auth，故应先创建账号。
创建了账号 root pass auth库为admin （步骤省略）
停止所有节点，重新启动mongo服务，并加上 --keyFile参数
发现报错
mongo3_1 | 2018-10-24T06:13:06.323+0000 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
mongo3_1 | 2018-10-24T06:13:06.331+0000 I ACCESS [main] permissions on /etc/access.key are too open
mongo2_1 | 2018-10-24T06:13:06.591+0000 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
mongo2_1 | 2018-10-24T06:13:06.605+0000 I ACCESS [main] permissions on /etc/access.key are too open
mongo_1 | 2018-10-24T06:13:06.609+0000 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
mongo_1 | 2018-10-24T06:13:06.614+0000 I ACCESS [main] permissions on /etc/access.key are too open
这是因为keyfile权限问题，执行命令将keyfile权限设置为600
chmod 600 /docker/conf/mongo/access.key
再次启动，成功。
进入某一容器执行副本集链接操作，系统提示已成功连接到副本集
![32532d16520fedee8d60a05078c6ea2f426d931c]()
