Detecting high availability readiness of a distributed computing system

A computer-readable storage medium storing computer-executable instructions comprising:

• instructions for identifying, in a distributed computing system having a first computer node and a second computer node, among multiple events that have occurred over a specified period, a set of non-veto events and a set of veto events related to the second computer node, the first computer node configured to manage a data access request received from a client computer node for accessing data stored at a storage system associated with the first computer node, the second computer node configured to take over from the first computer node to respond to the data access request in case the first computer node becomes unavailable;
• instructions for computing, based on an event classification policy, a weight of each of the set of non-veto events as a function of a severity index of the corresponding event and the set of non-veto events;
• instructions for computing, based on the event classification policy, a primitive value of each of the set of non-veto events as a function of a compliance factor of the corresponding event and the weight of the corresponding event;
• and
• instructions for computing a confidence measure of the second computer node as a function of the primitive values of the set of non-veto events and the set of veto events.

A system comprising:

• a processor;
• a first component configured to receive a list of multiple events that have occurred in a distributed computing system over a specified period, the events related to a first computer node and a second computer node of the distributed computing system, the first computer node configured to respond to a data access request received in the distributed computing system from a client computer node, the second computer node configured to take over from the first computer node in case the first computer node becomes unavailable;
• a second component configured to determine, based on an event classification policy and from the events, a set of non-veto events and a set of veto events related to the second computer node;
• a third component configured to retrieve, based on the event classification policy, a severity index and a compliance factor for each event of the set of non-veto events;
• and
• a fourth component configured to compute a confidence measure of the second computer node as a function of the set of veto events and the severity index and the compliance factor of the set of non-veto events.