If you have the transaction log and the snapshot, you have a backup. You might want to investigate using an observer or non-voting ZK instance as a backup mechanism. This would not upset your quorum since that machine would not participate in leader elections or in getting a quorum for commits. It would give you very current backups.
On Fri, Aug 5, 2011 at 11:30 AM, Damu R <[email protected]> wrote: > Hi, > I am in the process of setting up regular backup of zookeeper data > directory. Is there any documentation available on the recommended > tool/method or issues to be aware of? Some of by doubts are: > 1. what is the recommended frequency of backup? is there any case where > zookeeper may decide to get a complete data dump instead of using the > latest > snapshot and replaying transactions? > 2. from my understanding after reading the zookeeper administration guide, > zookeeper starts a fuzzy snapshot after a configured number of operations. > for backing up we need to take the latest snapshot and the transaction log > file. how do you avoid copying the snapshot when zookeeper is in the > process > of writing the snapshot file itself? > > It would be helpful if you can provide me some pointers on the possible > solutions. > > Regards > Damu >
