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mesosmesospheremesos-chronos

Can we run two 'slave' nodes on the same machines?

We are running a 3 node mesos cluster and mesos master is running on each node. Also, 2 slaves are running on each node. Is this a good practice? 2 slaves on each cluster won't be sending too much offer and end up being overloaded? What is the recommended config for 3 nodes cluster?

Solution

  • Thread from Mesos User Mailing List

    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.

    Running Docker containers won't work properly because restarting one agent will cause Docker containers managed by the other agent to be deleted.