Start/stop/restart a cluster
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Dynatrace Managed software consists of a number of Dynatrace services that are dependent on each other and should be stopped or started in a particular order. Use this procedure for Dynatrace Managed deployments containing three or more nodes.
- For Dynatrace Managed deployments containing less than three (3) nodes, you can use the official
dynatrace.shscript with additional parameters to properly start, stop, or restart Dynatrace services on each node individually within the cluster (Start/stop/restart a node).
For Dynatrace Managed deployments containing three (3) or more nodes, use the following cluster procedures:
Shut down cluster
Issue the following command on each existing node:1sudo nohup ./opt/dynatrace-managed/launcher/server.sh stop
Issue the following command to check the status:1sudo nohup ./opt/dynatrace-managed/launcher/server.sh status
When all server processes are fully shut down and a status check shows them as not running, issue the following command on each existing node, one node at a time:1sudo nohup ../launcher/dynatrace.sh stop
Start up cluster
/opt/dynatrace-managed/launcher/firewall.sh starton each node.
Issue the following command on each existing node (wait a minute between each startup):1sudo nohup ./opt/dynatrace-managed/launcher/elasticsearch.sh start
Issue the following command to check the status:1curl -X GET "localhost:9200/_cluster/health?wait_for_status=yellow&timeout=50s&pretty"Check status
active_shards_percent_as_numberis 100% and
number_of_nodesis equal to the number of nodes in the cluster.
Issue the following command on each existing node (wait a minute between each startup):1sudo nohup ./opt/dynatrace-managed/launcher/cassandra.sh start
Issue the following command to check the status:1sudo nohup ./opt/dynatrace-managed/utils/cassandra-nodetool.sh statusCheck status
Make sure that all nodes display
UNbefore proceeding to the next step.
Issue the following command on each existing node. (Wait a minute between each startup. It can take up to ~10 minutes to fully start a node.)1sudo nohup ./opt/dynatrace-managed/launcher/server.sh start
Once all server processes are up and running, start the rest of the processes. Issue the following command on each existing node:1sudo nohup ./opt/dynatrace-managed/launcher/dynatrace.sh start