Hi Adrian, Below zookeeper commands are generally used to get health of zookeeper cluster stat
Lists brief details for the server and connected clients. usage echo stat | nc server port This gives whether cluster is up /down. If down this will give that Zookeeper instance is currently not serving any request - which means either the leader election is failing or <= 50% of zookeeper node in cluster are down. mntr *New in 3.4.0:* Outputs a list of variables that could be used for monitoring the health of the cluster. $ echo mntr | nc localhost 2185 zk_version 3.4.0 zk_avg_latency 0 zk_max_latency 0 zk_min_latency 0 zk_packets_received 70 zk_packets_sent 69 zk_outstanding_requests 0 zk_server_state leader zk_znode_count 4 zk_watch_count 0 zk_ephemerals_count 0 zk_approximate_data_size 27 zk_followers 4 - only exposed by the Leader zk_synced_followers 4 - only exposed by the Leader zk_pending_syncs 0 - only exposed by the Leader zk_open_file_descriptor_count 23 - only available on Unix platforms zk_max_file_descriptor_count 1024 - only available on Unix platforms The output is compatible with java properties format and the content may change over time (new keys added). Your scripts should expect changes. ATTENTION: Some of the keys are platform specific and some of the keys are only exported by the Leader. The output contains multiple lines with the following format: On Mon, Jul 16, 2018 at 10:13 AM adrien ruffie <adriennolar...@hotmail.fr> wrote: > Hello all, > > > In my company we have a Zookeeper production cluster. > > > But we don't really know how can we check the health of our cluster... > > > Can we advise us about this topic ? > > > I know this topic may has been cropping up for a while, but I don't really > found any concrete solution. > > > Do you use a monitoring tools ? Which can launch alert ? > > What metrics/properties/any thing which can indicate that our cluster > isn't in good health. > > > Thank you very much and best regards > > > Adrien >
