MongoDB replica set add 2 ways to delete a node _mongodb

One, using Rs.reconfig, to add, delete nodes

1, add nodes

repmore:primary> config = {_id: "Repmore", Members:[{_id:0,host: ' 127.0.0.1:27017 ', Priority:2},{_id:1,host: ' 127.0.0.1:27018 ', priority:1}]};  Add node 
 
repmore:primary> rs.reconfig (config);  Make configuration effective 
 
repmore:primary> rs.status ();   View node Status 

Node added successfully.
Note: The Replset of the new node will be the same as the other nodes

2, delete the node

repmore:primary> config = {_id: "Repmore", Members:[{_id:0,host: ' 127.0.0.1:27017 ', Priority:2}]};   Delete node 
 
repmore:primary> rs.reconfig (config);  Make configuration effective 
 
repmore:primary> rs.status ();  View node Status 

Second, use Rs.add and rs.remove to add delete nodes

Repmore:primary> Rs.add ("127.0.0.1:27018");   Add node 
 
repmore:primary> rs.remove ("127.0.0.1:27018");//Delete section 

Note: Using Rs.add and Rs.remove is not a rs.reconfig to use the configuration to take effect.