Major Description
HA operational logging needs to follow the existing operational logging format which is:
[subject] [object] [message]
- subject, is a principal of a user or entity performing operation or reporting the message
- object, is an entity on which the operation is invoked or a source of a message
- message, operational logging message
Subjects
For operations performed by operator an operator principal should be provided in a subject, for example
[mng:admin(/127.0.0.1:49540)]
For operational log messages reported on a local node about remote node changes, a special Subject should be created identifying the local node in format
[grp(/{0})vhn(/{1}))]
- {0}, group name
- {1}, node name
For example
[grp(/high_availability)vhn(/node1))]
where 'high_availability' is a group name and 'node1' is a node name
Objects
If operation is performed on a local node and it effects the local node, a local node object needs to be specified in format
[grp(/{0})vhn(/{1})]
- {0}, group name
- {1}, node name
If operation is performed/reported on a remote node or affects the entire group the group object should be provided in format
[grp(/{0})]
Messages
Operational log for local node creation
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: local node object, [grp(/{0})vhn(/{1})]
Message: HA-1001 : Created
Operational log for local node deletion
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: local node object, [grp(/{0})vhn(/{1})]
Message: HA-1002 : Deleted
Operational log for a remote node added into a group for a first time
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/{0}))]
Message: HA-1003 : Added : Node : ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log for a remote node deleted from a group
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/{0}))]
Message: HA-1004 : Removed : Node : ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log for a remote node joining a group (attaching)
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/{0}))]
Message: HA-1005 : Joined : Node : ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log for a remote node leaving a group (detaching)
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/{0}))]
Message: HA-1006 : Left : Node : ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log for requesting a transfer master on a node
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: group object, [grp(/\{0\})]
Message: HA-1007 : Master transfer requested : to ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log for intruder node detected
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/\{0\})]
Message: HA-1008 : Intruder detected : Node ''{0}'' ({1})
- {0}, node name
- {1}, node address
Operational log when master looses majority
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: group object, [grp(/\{0\})]
Message: HA-1009 : Insufficient replicas contactable
Operational log for role being changed on local or remote node
Subject: local node subject, [grp(/{0})vhn(/{1})]
Object: groupobject, [grp(/\{0\})]
Message: HA-1010 : Role changed reported: Node ''{0}'' ({1}) from ''{2}'' to ''{3}''
- {0}, node name
- {1}, node address
- {2}, previous role
- {3}, new role
Operational log for attribute change: quorumOverride
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: local node object, [grp(/{0})vhn(/{1})]
Message: HA-1011 : Minimum group : {0}
- {0}, new value
Operational log for attribute change: priority
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: local node object, [grp(/{0})vhn(/{1})]
Message: HA-1012 : Priority : {0}
- {0}, new value
Operational log for attribute change: designatedPrimary
Subject: operator subject, ex [mng:admin(/127.0.0.1:49540)]
Object: local node object, [grp(/{0})vhn(/{1})]
Message: HA-1013 : Designated primary : {0}
- {0}, new value