Ambari services can be configured to start automatically on system boot. Each service can be configured to start all components, masters and workers, or selectively.
so how to enable all services in ambari cluster to start automatically on system boot by API ?
Remark – by default all services are disabled
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Answer
You may use auto-restart API, refer following document https://cwiki.apache.org/confluence/display/AMBARI/Recovery%3A+auto+start+components
Syntax. Following is syntax of API
curl -u admin:<password> -H "X-Requested-By: ambari" -X PUT 'http://<ambari host>:<ambari port>/api/v1/clusters/<cluster_name>/components?ServiceComponentInfo/component_name.in(<component name>)' -d '{"ServiceComponentInfo" : {"recovery_enabled":"true"}}'
Example. To set auto-restart for app timeline server component of YARN service use curl command as follows.
curl -u admin:<password> -H "X-Requested-By: ambari" -X PUT 'http://localhost:8080/api/v1/clusters/HDPCL/components?ServiceComponentInfo/component_name.in(APP_TIMELINE_SERVER)' -d '{"ServiceComponentInfo" : {"recovery_enabled":"true"}}'
NOTE: You can find list of components from http://<ambarihost>:<ambari port>/api/v1/clusters/Fenton/components