How to check if Ambari setup was already done?

[#1]

When automating the setup of Ambari, is there an easy way of checking if "ambari-server setup" was already done, in order to skip this step in a script?

[#2 · Accepted solution]

Ambari stores the configuration information in /etc/ambari-server/conf/ambari.properties file on Ambari server host. You could check something like below for the jdbc user and database name before invoking "ambari-server setup":

cat /etc/ambari-server/conf/ambari.properties  | grep jdbc.user.name
server.jdbc.user.name=<ambari_database_user_name>


cat /etc/ambari-server/conf/ambari.properties  | grep jdbc.database
server.jdbc.database=mysql
server.jdbc.database_name=<database_name>

If the entries exist and match with your environment, the setup was already done

On a fresh Ambari install where "ambari-server setup" is not yet done, this is what you would get:

[root@c6409 ~]# cat /etc/ambari-server/conf/ambari.properties  | grep jdbc.user.name
[root@c6409 ~]# echo $?
1
[root@c6409 ~]#

[#3]

Great thanks!

[#4]

@Stefan Kupstaitis-Dunkler

You could query the Ambari db for table "clusters" for eg.

mysql> select * from clusters;
+------------+-------------+--------------+--------------+--------------------+---------------+-----------------------+------------------+
| cluster_id | resource_id | cluster_info | cluster_name | provisioning_state | security_type | desired_cluster_state | desired_stack_id |
+------------+-------------+--------------+--------------+--------------------+---------------+-----------------------+------------------+
|          2 |           4 |              | Test       | INSTALLED          | NONE          |                       |                3 |
+------------+-------------+--------------+--------------+--------------------+---------------+-----------------------+------------------+
1 row in set (0.01 sec)

Or using curl get http://<ambari-server>:8080/api/v1/clusters/C1/ and process.

[#5]

Thank you @vpoornalingam! Two options, both of which are more effort than @vsharma's options though.

[#6]

This approach actually also checks whether HDP is provisioned whereas the first approach only says Ambari setup stepnis done. Of course from your question, its clear you only need that.