question how to check which services/component are in maintenance mode in Archives of Support Questions (Read Only)

how to check which services/component are in maintenance mode

mike_bronson7 — Sun, 18 Aug 2019 06:33:10 GMT

we run the follwing curl in order to check which services/component are in maintenance mode

curl -u admin:admin -H "X-Requested-By: ambari" -X GET http://localhost:8080/api/v1/clusters/sys76/services?ServiceInfo/maintenance_state=OFF

as we can see all zookeeper are in maintenance mode

but the output from API still show - "maintenance_state" : "OFF"

why ? - what its wrong here ?

example

      "href" : "http://localhost:8080/api/v1/clusters/sys76/services/ZOOKEEPER",
      "ServiceInfo" : {
        "cluster_name" : "sys76",
        "maintenance_state" : "OFF",
        "service_name" : "ZOOKEEPER"
      }
    }
  ]

Re: how to check which services/component are in maintenance mode

jonathanhurley — Wed, 21 Mar 2018 23:54:41 GMT

The is the correct way to check for Maintenance Mode being enabled. Which version of Ambari are you running? When I try this locally, the correct value for `maintenance_state` is reflected.

Also - you're putting the ZooKeeper service itself into MM, right? Putting individual hosts/components into MM won't reflect here.

Re: how to check which services/component are in maintenance mode

mike_bronson7 — Wed, 21 Mar 2018 23:57:13 GMT

so in that case can we capture the individual hosts/components that are in MM?

Re: how to check which services/component are in maintenance mode

mike_bronson7 — Wed, 21 Mar 2018 23:57:57 GMT

we have ambari version - 2.6.1.0

Re: how to check which services/component are in maintenance mode

asirna — Thu, 22 Mar 2018 00:09:38 GMT

@Michael Bronson,

You can use this API to check maintenance mode of components in a particular host

To get maintenance_state of all components

curl -u admin:admin -H "X-Requested-By: ambari"-X GET http://localhost:8080/api/v1/clusters/sys76/hosts/{hostname}/host_components?fields=HostRoles/maintenance_state

To get components which have maintenance mode ON

curl -u admin:admin -H "X-Requested-By: ambari"-X GET http://localhost:8080/api/v1/clusters/sys76/hosts/{hostname}/host_components?HostRoles/maintenance_state=ON

To get components which have maintenance mode OFF

curl -u admin:admin -H "X-Requested-By: ambari"-X GET http://localhost:8080/api/v1/clusters/sys76/hosts/{hostname}/host_components?HostRoles/maintenance_state=OFF

Note: Replace the hostname with the original hostname in the curl call

-Aditya

Re: how to check which services/component are in maintenance mode

mike_bronson7 — Thu, 22 Mar 2018 00:26:40 GMT

@Aditya

do you think we must check that no maintenance mode in component before HDP upgrade ?

Re: how to check which services/component are in maintenance mode

asirna — Thu, 22 Mar 2018 00:37:51 GMT

@Michael Bronson,

I think it is a good idea to check that no component is in maintenance mode. Ambari recommends that all the services must be up and running before upgrade and all the service checks should pass before the upgrade.

Re: how to check which services/component are in maintenance mode

jonathanhurley — Thu, 22 Mar 2018 02:23:40 GMT

Yes, you can - the above calls can capture it on a host/component basis.