mongo DB - All nodes secondary

Question

All of the nodes in our cluster are "secondary" and no node is stepping up as "primary".

How do I force a node to become primary?

===SOLUTION=== We had 4 nodes in our replica set, when we are supposed to only have an odd number of nodes.

1. Remove a node so you have an odd number of nodes

   • rs.config()

   Edit the list of servers in notepad/textpad removing one of the servers

   • config = POST_MODIFIED_LIST_HERE

   • rs.reconfig(config, {force:true})

2. Stop the mongodb service 'mongod' on all nodes, and bring them back up

3. Done

If this doesn't fix it, try adding a priority to one of the nodes.

Answer 1

You can use the following instructions available at MongoDB's website:

http://www.mongodb.org/display/DOCS/Forcing+a+Member+to+be+Primary