mongodbroot用户创建数据库提示notmaster的解决

mongodb root用户创建数据库提示not master

问题如题 

问题也比较简单， 就是master挂了

mongodb的集群似乎和Mysql，Redis的不太一样，这个我也不太清楚

总之单机不会出现这种情况，集群会出现

解决方法

就是将master重启就可以了

mongodb "errmsg" : "not master and slaveOk=false"的解决

是正常的，因为SECONDARY是不允许读写的，如果非要解决执行 rs.slaveOk() 这句命令就可以了

[yukw@mongodb4 data]$ ./mongo -port 20000
MongoDB shell version v3.4.4
connecting to: mongodb://127.0.0.1:20000/
MongoDB server version: 3.4.4
Server has startup warnings:
2019-07-31T17:06:43.397+0800 I CONTROL  [initandlisten]
2019-07-31T17:06:43.397+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten]
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten]
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten]
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2019-07-31T17:06:43.398+0800 I CONTROL  [initandlisten]

> show users
2019-07-31T17:07:33.469+0800 E QUERY    [thread1] Error: not master and slaveOk=false :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
DB.prototype.getUsers@src/mongo/shell/db.js:1537:1
shellHelper.show@src/mongo/shell/utils.js:752:9
shellHelper@src/mongo/shell/utils.js:659:15
@(shellhelp2):1:1
> show dbs
2019-07-31T17:07:39.126+0800 E QUERY    [thread1] Error: listDatabases failed:{
    "ok" : 0,
    "errmsg" : "not master and slaveOk=false",                    ##报错提示
    "code" : 13435,
    "codeName" : "NotMasterNoSlaveOk"
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:62:1
shellHelper.show@src/mongo/shell/utils.js:769:19
shellHelper@src/mongo/shell/utils.js:659:15
@(shellhelp2):1:1
> rs.slaveOk();                                   ##执行命令    
> show dbs
local  0.000GB
> show users
> 

好了，这就是解决not master and slaveOk=false的方法了

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。