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How to change the hostnames in a MongoDB set?
Consider the following sequence of commands to change the hostnames in a three-member set: Stop the mongod process on the member. After re-configuring all members of the set, start each mongod instance in the normal way: use the usual port number and use the –replSet option.
How to force a member to become primary in MongoDB?
In a mongo shell, run rs.status () to ensure your replica set is running as expected. In a mongo shell connected to the mongod instance running on mdb2.example.net, freeze mdb2.example.net so that it does not attempt to become primary for 120 seconds.
When to use a replica set in MongoDB?
You can use this to test the behavior of your app in circumstances where the primary node is changed. When you’re setting up a replica set connection, you will generally specify multiple hosts to connect to.
What to do when you change your primary domain?
Be sure you can sign in to the domain host (for example, GoDaddy or Enom) of your new primary domain. You need to update domain settings, and your domain host can help you. If you purchased your account from a reseller, notify your reseller before switching.
How to restart MongoDB using one-click installer?
I installed mongoldb using the one-click installer. I changed the config bind-ip and commented it out (to allow it to accept any connection). Then I wanted to restart to make the changes take effect, so I did the following:
Why does MongoDB primary become secondary after server restart?
The others are unreachable from its perspective, so even if you go with 2 nodes, 1 out of 2 down means you cannot form a majority and you will still only have secondary state. Given your current rs.status () output, try this when connected via the mongo shell to Ubuntu12041vanilla:27017:
How to stop the mongod process on a member?
Stop the mongod process on the member. After re-configuring all members of the set, start each mongod instance in the normal way: use the usual port number and use the –replSet option. For example: Before binding to a non-localhost (e.g. publicly accessible) IP address, ensure you have secured your cluster from unauthorized access.