Ambari can only manage the principals and keytabs for the services managed by it. The pricipal and keytabs are actually provided as part of the configuration files with the stack definition.
For e.g. for Storm, looking at the stack , you can see - ....
"name": "storm_components",
"principal": {
"value": "${storm-env/storm_user}-${cluster_name}@${realm}",
"type": "user",
"configuration": "storm-env/storm_principal_name"
},
"keytab": {
"file": "${keytab_dir}/storm.headless.keytab",
"owner": {
"name": "${storm-env/storm_user}",
"access": "r"
},
.... Ambari does not support managing principals and keytabs of other components that are outside its purview.
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