Alexandr created MESOS-9726:
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Summary: No running tasks in marathon after restart non-leader
mesos-master node
Key: MESOS-9726
URL: https://issues.apache.org/jira/browse/MESOS-9726
Project: Mesos
Issue Type: Bug
Reporter: Alexandr
Good day!
I have problem with my mesos-cluster:
I have 3 mesos-master nodes with Marathon cluster (lets call them -
Mas1,Mas2,Mas3) and 3 mesos-slave nodes (lets call them - Slv1,Slv2,Slv3) with
running apps on it. And I also have a Zookeeper cluster on nodes Mas1,Mas2,Mas3.
So, Mesos leader - master-node "Mas1".
After I restarted master-node "Mas3" - he got back to the Mesos cluster,
everything is fine but after a moment I opened Marathon and all running tasks
from my mesos-slave nodes became "unknown" and have no instances on it.
So I checked:
1. My mesos agents - everything was ok, 3 agents running.
2. That all services are running and all clusters (Mesos\Marathon\Zookeeper)
are fine
3. Decided to restart all mesos-slave services on slave nodes - on slave-node
Slv3 1 of 3 instances launched for all applications, then restarted all
marathon-services. After it all tasks switched to status "Waiting"\"Delayed".
4. Checked mesos-master and slave logs, no errors or information about any
problems on cluster - only information about killing and launching new tasks on
slave-node.
5. Decided to stop-start mesos-master service for re-election of a Mesos
leader.
After it leader became master-node "Mas2" and all tasks in marathon started to
run instances like normal.
Logs will be uploaded later. Wonder how it could happen
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