Re: ZK monitoring
Maybe we should have a contrib pkg for utilities such as this? I could see a python script that, given 1 server (might require addl 4letter words but this would be useful regardless), could collect such information from the cluster. Create a JIRA? Patrick On 08/17/2010 12:14 PM, Andrei Savu wrote: It's not possible. You need to query all the servers in order to know who is the current leader. It should be pretty simple to implement this by parsing the output from the 'stat' 4-letter command. On Tue, Aug 17, 2010 at 9:50 PM, Jun Raojun...@gmail.com wrote: Hi, Is there a way to see the current leader and a list of followers from a single node in the ZK quorum? It seems that ZK monitoring (JMX, 4-letter commands) only provides info local to a node. Thanks, Jun -- Andrei Savu
Re: ZK monitoring
It would be nice if it took a list of servers and verified that they all thought that they were part of the same cluster. On Thu, Aug 19, 2010 at 1:46 PM, Patrick Hunt ph...@apache.org wrote: Maybe we should have a contrib pkg for utilities such as this? I could see a python script that, given 1 server (might require addl 4letter words but this would be useful regardless), could collect such information from the cluster. Create a JIRA? Patrick On 08/17/2010 12:14 PM, Andrei Savu wrote: It's not possible. You need to query all the servers in order to know who is the current leader. It should be pretty simple to implement this by parsing the output from the 'stat' 4-letter command. On Tue, Aug 17, 2010 at 9:50 PM, Jun Raojun...@gmail.com wrote: Hi, Is there a way to see the current leader and a list of followers from a single node in the ZK quorum? It seems that ZK monitoring (JMX, 4-letter commands) only provides info local to a node. Thanks, Jun -- Andrei Savu
ZK monitoring
Hi, Is there a way to see the current leader and a list of followers from a single node in the ZK quorum? It seems that ZK monitoring (JMX, 4-letter commands) only provides info local to a node. Thanks, Jun
Re: ZK monitoring
It's not possible. You need to query all the servers in order to know who is the current leader. It should be pretty simple to implement this by parsing the output from the 'stat' 4-letter command. On Tue, Aug 17, 2010 at 9:50 PM, Jun Rao jun...@gmail.com wrote: Hi, Is there a way to see the current leader and a list of followers from a single node in the ZK quorum? It seems that ZK monitoring (JMX, 4-letter commands) only provides info local to a node. Thanks, Jun -- Andrei Savu
Re: ZK monitoring
You should also take a look at ZOOKEEPER-744 [1] and ZOOKEEPER-799 [2] The archive from 799 contains ready to be used scripts for monitoring ZooKeeper using Ganglia, Nagios and Cacti. Let me know if you need more help. [1] https://issues.apache.org/jira/browse/ZOOKEEPER-744 [2] https://issues.apache.org/jira/browse/ZOOKEEPER-799 On Tue, Aug 17, 2010 at 9:50 PM, Jun Rao jun...@gmail.com wrote: Hi, Is there a way to see the current leader and a list of followers from a single node in the ZK quorum? It seems that ZK monitoring (JMX, 4-letter commands) only provides info local to a node. Thanks, Jun -- Andrei Savu
