• 先stop SAMPLESRV的所有服务。
• 再delete SAMPLESRV服务。

先停止服务：

snippet.bash

curl -u admin:admin -H "X-Requested-By: ambari" -X PUT -d '{"RequestInfo": {"context":"Stop Service"},"Body":{"ServiceInfo":{"state":"INSTALLED"}}}' http://192.168.0.200:8080/api/v1/clusters/HDP/services/SAMPLESRV

再删除服务：

snippet.bash

curl -u admin:admin -H "X-Requested-By: ambari" -X DELETE http://192.168.0.200:8080/api/v1/clusters/HDP/services/SAMPLESRV

删除目录：

snippet.bash

rm -rf /var/lib/ambari-server/resources/stacks/HDP/3.1/services/SAMPLESRV

有时因为种种原因，以上常规操作无法彻底删除服务，导致 ambari-server 启动时报告服务异常（WARN）。例如，SAMPLESRV已经从目录删除，但是仍然报以下错误，说明Ambari后台数据库还有SAMPLESRV的记录：

snippet.bash

[root@yz200 ~]# cat /var/log/ambari-server/ambari-server-check-database.log
……
2019-11-11 09:18:24,951  WARN - Service(s): SAMPLESRV, from cluster HDP has no config(s) in serviceconfig table!
……

此时，可以通过直接操作Ambari后台数据库强力删除。

snippet.sql

[postgres@yz200 ~]$ psql -d ambari -U ambari
ambari=> DELETE FROM servicedesiredstate WHERE service_name LIKE '%SAMPLESRV%';
DELETE 1
ambari=> DELETE FROM hostcomponentstate WHERE component_name LIKE '%SAMPLESRV%';
DELETE 3
ambari=> DELETE FROM hostcomponentdesiredstate WHERE component_name LIKE '%SAMPLESRV%';
DELETE 3
ambari=> DELETE FROM servicecomponentdesiredstate WHERE component_name LIKE '%SAMPLESRV%';
DELETE 3
ambari=> DELETE FROM clusterservices WHERE service_name LIKE '%SAMPLESRV%';

删除目录：

snippet.bash

rm -rf /var/lib/ambari-server/resources/stacks/HDP/3.1/services/SAMPLESRV

重启ambari-server服务：

snippet.bash

ambari-server restart

• 修改ambari postgres-embedded数据库源数据，删除服务。