简介

目标是将原本的mongodb搬移到新的server。
本篇文章内容仅包含複製完原本mongodb档案后，mongod的初始设定的步骤。

包含以下几个步骤：

启动standalone mongod

将设定档(mongod.conf)中的replication和security注解。
并更新ip、port、各种档案路径(如果需要的话)。

sed -i "/bindIp/c\   bindIp: `hostname -i`, 127.0.0.1" conf/mongod.confsed -i '/replication/s/^/#&/' conf/mongod.confsed -i '/oplogSizeMB/s/^/#&/' conf/mongod.confsed -i '/replSetName/s/^/#&/' conf/mongod.confsed -i '/security/s/^/#&/' conf/mongod.confsed -i '/authorization/s/^/#&/' conf/mongod.confsed -i '/keyFile/s/^/#&/' conf/mongod.conf

mongod.conf

net:   port:    bindIp: `hostname -i`,127.0.0.1#replication:#   oplogSizeMB: #   replSetName: #security:#   authorization: enabled#   keyFile:

启动mongod

mongod --config your_config_path

删除local data

连线到mongo shell，删除local的内容。

use localdb.dropDatabase()use admindb.shutdownServer()

重启mongo成为single-node

将设定档中，前面注解掉的replication和security都拿掉。

sed -i '/replication/s/^#//' conf/mongod.confsed -i '/oplogSizeMB/s/^#//' conf/mongod.confsed -i '/replSetName/s/^#//' conf/mongod.confsed -i '/security/s/^#//' conf/mongod.confsed -i '/authorization/s/^#//' conf/mongod.confsed -i '/keyFile/s/^#//' conf/mongod.conf

mongod.conf

replication:   oplogSizeMB:    replSetName: security:   authorization: enabled   keyFile:

启动mongod

mongod --config your_config_path

Replica set初始化

Primary node

rs.initiate()rs.status()exit

Second node

rs.add( { host: "## HOSTNAME ##:## PORT ##" } )rs.status()exit

大功告成！

参考

https://docs.mongodb.com/manual/tutorial/restore-replica-set-from-backup/