以删除/api/v1/clusters/HDP/services/SAMPLESRV为例。

# 一、常规方法

## 1.1 通过Web操作

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

## 1.2 通过REST API操作

先停止服务：

```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：

```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：

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

# 二、通过数据库操作

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：

```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。

```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：

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

重启ambari-server服务：

```bash
ambari-server restart
```

# 三、参考

- [修改ambari postgres-embedded数据库源数据，删除服务。](https://blog.csdn.net/fzh90/article/details/56014606)