Start/stop/restart a cluster

For Dynatrace Managed deployments containing less than three (3) nodes, you can use the official dynatrace.sh script 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:

Issue the following command on each existing node:

sudo nohup ./opt/dynatrace-managed/launcher/server.sh stop

Run /opt/dynatrace-managed/launcher/firewall.sh start on each node.
Issue the following command on each existing node (wait a minute between each startup):
```
sudo nohup ./opt/dynatrace-managed/launcher/elasticsearch.sh start
```
Issue the following command to check the status:
```
curl -X GET "localhost:9200/_cluster/health?wait_for_status=yellow&timeout=50s&pretty"
```
Check status
Make sure active_shards_percent_as_number is 100% and number_of_nodes is equal to the number of nodes in the cluster.
Issue the following command on each existing node (wait a minute between each startup):
```
sudo nohup ./opt/dynatrace-managed/launcher/cassandra.sh start
```
Issue the following command to check the status:
```
sudo nohup ./opt/dynatrace-managed/utils/cassandra-nodetool.sh status
```
Check status
Make sure that all nodes display UN before 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.)
```
sudo 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:
```
sudo nohup ./opt/dynatrace-managed/launcher/dynatrace.sh start
```

Shut down cluster