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How to ensure only one node runs the LDAP sync?

Question asked by jonnyg on May 18, 2016
Latest reply on May 26, 2016 by jbarrez
In our environment, all of our deployments are automated, and we at present have no way of distinguishing one node from another.
We will probably find a way to do this, but it won't be completely failsafe.

I ask this to see that we can have just one server run the LDAP sync.
Testing in 1.4.2, we see that nodes will run the LDAP sync simultaneously; there is no database lock to prevent others from running. This doesn't seem to be a bad thing, but we do want to avoid having these run in parallel.

One possible solution – suppose each node were to register on startup with its url (host/port/context) in the database… a function could then check whether the node we're running on is the "first" one (either by registration timestamp, or other calculation) – and then only this node will run this.

Is this possible today?