Vijay Bellur <vbellur@xxxxxxxxxx> schrieb am Mi., 24. Mai 2017 um 05:53 Uhr:
On Tue, May 23, 2017 at 1:39 AM, Christopher Schmidt <fakod666@xxxxxxxxx> wrote:OK, seems that this works now.A couple of questions:- What do you think, are all these options necessary for Kafka?I am not entirely certain what subset of options will make it work as I do not understand the nature of failure with Kafka and the default gluster configuration. It certainly needs further analysis to identify the list of options necessary. Would it be possible for you to enable one option after the other and determine the configuration that ?- You wrote that there have to be kind of application profiles. So to find out, which set of options work is currently a matter of testing (and hope)? Or are there any experiences for MongoDB / ProstgreSQL / Zookeeper etc.?Application profiles are work in progress. We have a few that are focused on use cases like VM storage, block storage etc. at the moment.- I am using Heketi and Dynamik Storage Provisioning together with Kubernetes. Can I set this volume options somehow by default or by volume plugin?Adding Raghavendra and Michael to help address this query.
For me it would be sufficient to disable some (or all) translators, for all volumes that'll be created, somewhere here: https://github.com/gluster/gluster-containers/tree/master/CentOS
This is the container used by the GlusterFS DaemonSet for Kubernetes.
-VijayThanks for you help... really appreciated.. ChristopherVijay Bellur <vbellur@xxxxxxxxxx> schrieb am Mo., 22. Mai 2017 um 16:41 Uhr:Looks like a problem with caching. Can you please try by disabling all performance translators? The following configuration commands would disable performance translators in the gluster client stack:gluster volume set <volname> performance.quick-read offgluster volume set <volname> performance.io-cache offgluster volume set <volname> performance.write-behind offgluster volume set <volname> performance.stat-prefetch offgluster volume set <volname> performance.read-ahead offgluster volume set <volname> performance.readdir-ahead offgluster volume set <volname> performance.open-behind offgluster volume set <volname> performance.client-io-threads offThanks,VijayOn Mon, May 22, 2017 at 9:46 AM, Christopher Schmidt <fakod666@xxxxxxxxx> wrote:Hi all,has anyone ever successfully deployed a Kafka (Cluster) on GlusterFS volumes?I my case it's a Kafka Kubernetes-StatefulSet and a Heketi GlusterFS.Needless to say that I am getting a lot of filesystem related exceptions like this one:Failed to read `log header` from file channel `sun.nio.ch.FileChannelImpl@67afa54a`. Expected to read 12 bytes, but reached end of file after reading 0 bytes. Started read from position 123065680.I limited the amount of exceptions with the log.flush.interval.messages=1 option, but not all...best Christopher_______________________________________________
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