MongDB from execCommand not master
2017-08-25 16:28
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count failed: not master{ "note" : "from execCommand", "ok" : 0, "errmsg" : "not master" } at src/mongo/shell/query.js:191 在SECONDARY节点无法show dbs 主从启动之后,连接slave可以成功连上,但是在slave中执行 show dbs 的时候就报错了: QUERY Error: listDatabases failed:{ "note" : "from execCommand", "ok" : 0, "errmsg" : "not master" } 解决方法: 在报错的slave机器上执行 rs.slaveOk()方法即可。 解释一下具体slaveOk方法是什么意思? Provides a shorthand for the following operation: db.getMongo().setSlaveOk() This allows the current connection to allow read operations to run on secondary members. See the readPref() method for more fine-grained control over read preference in the mongo shell.
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