errmsg“ : ”No host described in new configuration 1 for replica set rs0 maps to this node", Why I am getting this message?

Question

I am getting this message every time I do rs.initiate() :

No host described in new configuration 1 for replica set rs0 maps to this node

Answer 1

I just ran into this issue, and in my case the symptoms were that everything worked correctly, until I rebooted the server.

Then I would get the following error: NodeNotFound: No host described in new configuration $id for replica set $name maps to this node

Just restarting the mongodb daemon fixed it, so it couldn't be a replica set configuration issue.

After checking the logs a bit more in detail, I noticed the following error message: NETWORK [replexec-0] getaddrinfo("$name.emilburzo.com") failed: Temporary failure in name resolution -> bingo

It was trying to query the hostname before the network was fully up, and thus the replica set member didn't know it's own identity

Adding the server's FQDN hostname to /etc/hosts fixed it, e.g.:

127.0.1.1       shortname    shortname.fqdn.com