How do I find the serviceId of a name node to use "hdfs haadmin getServiceState <serviceId>" ?

[#1]

I am writing a script that uses the following command:

hdfs haadmin getServiceState <serviceId>

What is the serviceId?

Thanks!

[#2 · Accepted solution]

Found it!

<serviceid> is one of the values defined for property

dfs.ha.namenodes.mycluster in hdfs-site.xml

[#3]

Yes, you are correct

[root@host1 20376-hdfs-NAMENODE]# hdfs haadmin -getServiceState namenode1
standby
[root@host1 20376-hdfs-NAMENODE]# hdfs haadmin -getServiceState namenode2
active
[root@host2 20376-hdfs-NAMENODE]#