Hi, Is it still an issue with the below config as we have cgroup setting over there?
Do i need to use both "--resources" && "--cgroups_root" setting for running 2 slaves in the same node. Or, either one of them should do. Also, is there any setting to be done at the OS( cgroup ) level for running 2 slaves. Anyway, since it is not a recommended to run 2 slaves on the same node, I am not going with that option. Just trying to understand here ... Thanks On Thu, Mar 8, 2018 at 11:02 AM, Baskar Sikkayan <baskar....@gmail.com> wrote: > Hi, > > This is our docker compose for starting mesos slave. > > mesos-slave1: > > image: docker.com/mesos/mesos-slave:0.28.2 > > depends_on: [ mesos-master ] > > restart: always > > privileged: true > > network_mode: host > > volumes: > > - ~/mesos-data/slave-1:/tmp/mesos > > - /cgroup:/sys/fs/cgroup > > - /var/run/docker.sock:/var/run/docker.sock > > environment: > > MESOS_CONTAINERIZERS: docker > > MESOS_MASTER: "%mesos.zk%" > > MESOS_PORT: 5051 > > MESOS_LOGGING_LEVEL: WARNING > > MESOS_INITIALIZE_DRIVER_LOGGING: "false" > > MESOS_GC_DELAY: "%mesos.gc.delay%" > > MESOS_AUTHENTICATE_HTTP: "true" > > PRINCIPAL: "%mesos.principal%" > > SECRET: "%mesos.secret%" > > > We are running mesos version 0.28.2. I know, it is pretty old. But no > option to upgrade in the near future. We use Mesos containerizers. > > Is this still an issue with 2 mesos salves on the same node? > > > Thanks > > On Wed, Mar 7, 2018 at 10:11 PM, Jie Yu <yujie....@gmail.com> wrote: > >> Running 2 agents on the same server will send the same offer twice( same >>> offer by each agent ) and there are chances that resources will be over >>> utilized by accepting the same offer twice by the framework. >> >> >> If you didn't specify `--resources` flags on the agent, then yes. >> >> May I know the settings( cgroup ) required to run 2 slaves in the same >>> server and How does it behave? >> >> >> Check out `--cgroups_root` flag in https://github.com/apache/m >> esos/blob/master/docs/configuration/agent.md >> >> This flag only applies to MesosContainerizer (can be used to launch >> Docker containers). >> >> - Jie >> >> >> On Wed, Mar 7, 2018 at 10:06 PM, Baskar Sikkayan <baskar....@gmail.com> >> wrote: >> >>> 1. Is my understanding correct? >>> >>> Running 2 agents on the same server will send the same offer twice( same >>> offer by each agent ) and there are chances that resources will be over >>> utilized by accepting the same offer twice by the framework. >>> >>> 2. May I know the settings( cgroup ) required to run 2 slaves in the >>> same server and How does it behave? >>> >>> On Wed, Mar 7, 2018 at 10:03 PM, Jie Yu <yujie....@gmail.com> wrote: >>> >>>> Running Docker containers won't work properly because restarting one >>>> agent will cause Docker containers managed by the other agent to be >>>> deleted. >>>> >>>> On Wed, Mar 7, 2018 at 9:58 PM, Baskar Sikkayan <baskar....@gmail.com> >>>> wrote: >>>> >>>>> We dont have any isolation setting. Looks like 2 slaves are sending >>>>> too many offers( same resource offers by 2 agents ) and hence servers gets >>>>> overloaded by too many docker jobs and docker becomes unresponsive. Even >>>>> "docker ps" not working in this case and docker meta files gets corrupted >>>>> on server reboot. Not sure why docker becomes unresponsive. Is running 2 >>>>> slaves are the main reason for this issue? >>>>> >>>>> On Wed, Mar 7, 2018 at 9:52 PM, Jie Yu <yujie....@gmail.com> wrote: >>>>> >>>>>> It depends on your isolation setting (mainly cgroup, or any node >>>>>> level resources). In general, we don't recommend folks use multiple >>>>>> agents >>>>>> on a node. >>>>>> >>>>>> It's possible to make it work by setting `cgroup_root` separately for >>>>>> MesosContainerizer. For DockerContainerizer, currently, we hard code >>>>>> `DOCKER_NAME_PREFIX`, making it not possible to use two agents on a node >>>>>> properly. >>>>>> >>>>>> - Jie >>>>>> >>>>>> On Wed, Mar 7, 2018 at 9:48 PM, Baskar Sikkayan <baskar....@gmail.com >>>>>> > wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> We are running 3 node mesos cluster and on each node running 1 >>>>>>> mesos master and 2 mesos slaves. Is this a good practice? >>>>>>> >>>>>>> Will it be a problem running 2 slaves as it might offer too much and >>>>>>> will get overloaded. >>>>>>> >>>>>>> >>>>>>> Thanks, >>>>>>> Baskar.S >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>> >> >
