Ahh thanks Billie, I'll stick with just one monitor then. Thanks!
On Wed, Nov 6, 2013 at 10:32 AM, Billie Rinaldi <[email protected]>wrote: > On Tue, Nov 5, 2013 at 12:51 PM, Josh Elser <[email protected]> wrote: > >> It looks like you can configure multiple hosts for GC and they'll use >> ZooKeeper to perform failover (like the master). >> >> Tracers -- You can run multiple tracer processes. You likely don't need >> 1:1 as you run tservers, but you can run a few if you're concerned about >> it. They're not required for Accumulo operation. >> >> Same for the monitor. If you need to have multiple running for failover >> purposes, it looks like you can specify multiple and it will just launch a >> monitor on each host you specified. There's no centralize URL you can >> always hit here. You would have to check each one to find one that was, >> unless you want to run some sort of reverse-proxy in front of them all. >> > > I think additional monitors won't work entirely as expected. The log > forwarding from the other processes is set up when the processes are > started, and the logs are only sent to the first host in the monitor file. > > >> _obligatory I just looked to source code to come to this conclusion_ >> >> >> On 11/5/13, 3:13 PM, Terry P. wrote: >> >>> I put my secondary namenode in the masters file for the first time with >>> this latest Accumulo 1.4.2 cluster deployment so it would run as a >>> Standby Accumulo Master which I read about in the User Guide. Recently >>> had the Master lose its Zookeeper lock (network glitch, being >>> researched), and was glad to see the secondary namenode Master process >>> took over as it should. >>> >>> But if my Namenode / Accumulo Master server goes down, I also lose the >>> gc, monitor, and tracer processes as well. *Can I configure the >>> >>> secondary namenode in gc, tracer, and monitor files as well, or should >>> they run on only one host at a time*? In this case, the GC also lost >>> >>> its Zookeeper lock, which resulted in a cluster with no GC running at >>> all until I caught it. >>> >>> Thanks in advance. >>> >> >
