title: Flink add Task/JobManagers to cluster
body: <p>Regarding adding new Task/JobManagers to an existing running cluster the procedure can be found here (<a href="https://ci.apache.org/projects/flink/flink-docs-release-1.2/setup/cluster_setup.html#adding-jobmanagertaskmanager-instances-to-a-cluster" rel="nofollow noreferrer">https://ci.apache.org/projects/flink/flink-docs-release-1.2/setup/cluster_setup.html#adding-jobmanagertaskmanager-instances-to-a-cluster</a>).<br>
  However if we shutdown the cluster and start it again the information about the added hosts will be lost.<br>
  Is it safe practice that while adding the new host to the cluster to also update and save in parallel the "masters" and "slaves" configuration files on all nodes?</p>