How can I prepare for Ranger Server failure? If the server that has ranger admin server got critical fault, i can't changes authorization policy until restore ranger admin server. So, i need to restore, backup, ha and etc.. options. First, i consider ha option. Ranger HA uses load balancer in front of two ranger admin server. I think that it is same situation in server level failure. It just moved single point of failure from ranger admin server to load balancer. Even if i construct ranger admin load balancer to another server, all services of using ranger plugin need to restart. That is very very hard big and commercial cluster. Second, i consider reinstall ranger option. It follows working sequences in the below. Ranger plugin disable -> service of using ranger plugin restart -> install ranger to another server -> Ranger plugin enable It also needs restarting services. I don't understand why can't add comma separated url to ranger.plugin.hdfs.policy.source.rest.url, configuration. I think since ranger admin does not have huge loads, so ranger admin does not need load balancer. Return to first, How can I prepare for Ranger Server failure?
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