[SOLR-13055] Introduce check to determine "liveliness" of a Solr node

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Labels: cloud native
• Assignee: Unassigned
• Reporter: Amrit Sarkar
• Created: 11/Dec/18 06:42
• Updated: 30/Jan/21 20:08
• Resolved: 11/Dec/18 18:14

Description

As the applications are becoming cloud-friendly; there are multiple probes which are required to verify availability of a node.

Like in Kubernetes we need 'liveliness' and 'readiness' probe explained in https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/n determine if a node is live and ready to serve live traffic.

Solr should also support such probes out of the box as an API or otherwise to make things easier. In this JIRA, we are tracking the necessary checks we need to determine if a node is 'liveliness', in all modes, standalone and cloud.

Issue Links

• incorporates: SOLR-14210 Add replica state option for HealthCheckHandler
• is a clone of: SOLR-11126 Node-level health check handler