How do I update configuration of a Cassandra cluster

Question

I have a 3 node Cassandra cluster and I want to make some adjustments to the cassandra.yaml . My question is, how should I perform this? One node at a time or is there a way to make it happen without shutting down nodes?  Btw, I am using Cassandra 2.2 and this is a production cluster.

Can anyone help me with this query?

Thanks.

Answer 1

Here is a way through which you would be able to reset a specific file to the last-committed state (to discard uncommitted changes in a specific file):

git checkout thefiletoreset.txt

This is mentioned in the git status output:

(use "git checkout -- <file>..." to discard changes in working directory)

To reset the entire repository to the last committed state:

git reset --hard

To remove untracked files, I usually just delete all files in the working copy (but not the .git/folder!), then do git reset --hard which leaves it with only committed files.

A better way is to use git clean: (Warning: using the -x flag as below will cause git to delete ignored files.)

git clean -d -x -f

will remove the files which are not tracked, including directories (-d) and files ignored by git (-x). Replace the -fargument with -n to perform a dry-run or -i for interactive mode and it will tell you what will be removed.

I hope the above information will be helpful to you.