Change the host name of a shard

[Richard Mannion]

I have this set up:

> db.runCommand({listshards:1})
{
"shards" : [
{
"_id" : "shard0000",
"host" : "192.168.0.223"
}
],
"ok" : 1
}

We are having to change the IP addresses of all our servers. I have
figured out how to change the IPs of the config servers and
replication sets, but I need to change this host entry to point to a
new IP address. How do I do that?

Richard

[Nat]

If you have only one shard, just set up a new config server from scratch and then add that data server to the shard. Note that you should probably use hostname instead of ip in case you want to change it again later.

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[Richard Mannion]

would it be possible to change the IP of the database servers, then
remove the shard since it will not be connecting to anything and then
add a new shard connecting to the new IPs? would I lose any data that
way?

[Nat]

Yes, it's fairly easy on single instance. Simply shut it down, change ip address, restart mongod, start up new config server, addshard with new ip/hostname of mongod.