mongodb root用戶創建數據庫提示not master

問題如題?

問題也比較簡單， 就是master掛了

mongodb的集群似乎和mysql，redis的不太一樣，這個我也不太清楚

總之單機不會出現這種情況，集群會出現

解決方法

就是將master重啟就可以了

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

是正常的，因為SECONDARY是不允許讀寫的，如果非要解決執行 rs.slaveOk() 這句命令就可以了

[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", ? ? ? ? ? ? ? ? ? ?##報錯提示
?? ?"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();?? ??? ??? ??? ??? ??? ? ? ? ? ? ? ##執行命令?? ?
> show dbs
local ?0.000GB
> show users
>?

好了，這就是解決not master and slaveOk=false的方法了

總結