Storm service components should indicate security state

The Storm service components should indicate security state when queried by Ambari Agent via STATUS_COMMAND. Each component should determine it's state as follows:

DRPC_SERVER

Indicators

• Command JSON
  • config['configurations']['cluster-env']['security_enabled']
    • = “true”
• Configuration File: params.conf_dir + ‘/storm-jaas.conf’
  • StormServer/keyTab
    • not empty
    • path exists and is readable
    • required
  • StormServer/principal
    • not empty
    • required

Pseudocode

if indicators imply security is on and validate
    if kinit(drpc server master principal) succeeds
        state = SECURED_KERBEROS
    else
        state = ERROR 
else
    state = UNSECURED

STORM_UI_SERVER

Indicators

• Command JSON
  • config['configurations']['cluster-env']['security_enabled']
    • = “true”
• Configuration File: params.conf_dir + ‘/storm-jaas.conf’
  • StormClient/keyTab
    • not empty
    • path exists and is readable
    • required
  • StormClient/principal
    • not empty
    • required

Pseudocode

if indicators imply security is on and validate
    if kinit(storm ui server principal) succeeds
        state = SECURED_KERBEROS
    else
        state = ERROR 
else
    state = UNSECURED

NIMBUS

Indicators

• Command JSON
  • config['configurations']['cluster-env']['security_enabled']
    • = “true”
• Configuration File: params.conf_dir + ‘/storm-jaas.conf’
  • StormServer/keyTab
    • not empty
    • path exists and is readable
    • required
  • StormServer/principal
    • not empty
    • required

Pseudocode

if indicators imply security is on and validate
    if kinit(nimbus master principal) succeeds
        state = SECURED_KERBEROS
    else
        state = ERROR 
else
    state = UNSECURED

Note: Due to the cost of calling kinit results should be cached for a period of time before retrying. This may be an issue depending on the frequency of the heartbeat timeout.
Note: kinit calls should specify a temporary cache file which should be destroyed after command is executed - BUG-29477

Note: There may be additional work related to REST gateway impersonation