Hi Harish,
thank you very much for this advise and explanation ! Do you think with just a simple script shell for checking all this metrics is enough ? Or would better to do it in a Java with a simple monitoring application? Thank again, Best regards, Adrien ________________________________ De : harish lohar <hklo...@gmail.com> Envoyé : mardi 17 juillet 2018 04:13:51 À : user@zookeeper.apache.org Objet : Re: ZooKeeper Cluster Health Checking 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 >
