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Re: [MooseFS-Users] Running the master on the same host as a chunk?
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From: Wilson, S. M <st...@pu...> - 2017-06-26 20:18:36
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We normally set up two systems filled with disks (between 8 and 24, depending on the system). Each of the two systems runs a chunk server. One of the systems also runs the master server while the other one runs a metalogger server. The MooseFS volumes that are exported from these systems contain user home directories as well as data directories for both large image files and millions of small ASCII files. And we set up the default goal to be two copies of each file, one copy stored on each of the two chunk servers. The performance has been very acceptable overall. I couldn't tell from your original email if you were intending to run multiple chunk servers on this system or just have one chunk server that consolidated all the storage that you have available on that system. It may be a little tricky (and not recommended) to run multiple chunk servers on the same system although it *might* work if you put the chunk servers into containers (as mentioned on the LizardFS mail list) or set up a different mfschunkserver.cfg file for each chunk server making sure that you modified CSSERV_LISTEN_PORT so that it was different for each chunk server. Steve ________________________________ From: WK <wk...@bn...> Sent: Monday, June 26, 2017 3:49 PM To: moo...@li... Subject: Re: [MooseFS-Users] Running the master on the same host as a chunk? We have done so in an archive system, where the traffic doesn't have to be terribly responsive and tolerant to performance lags. Worked fine. It is really a resource issue. If the master has to compete with the chunkserver for RAM,cpu and disk i/o etc and/or you have lots of activity, then results are going to be uneven. -wk On 6/26/2017 10:38 AM, Warren Myers wrote: Use case: attaching multiple LUNs/NAS mounts/etc to a single server. Want to use those multiple mounts as a failed-over file system using MooseFS. Can I run the master on the same server as the chunk - so that each mount gets treated as a chunk, and the master distributes across them? Warren Myers https://antipaucity.com https://www.digitalocean.com/?refcode=d197a961987a ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _________________________________________ moosefs-users mailing list moo...@li...<mailto:moo...@li...> https://lists.sourceforge.net/lists/listinfo/moosefs-users |
