Manage High Availability Deployment
Manage your High Availability deployment by monitoring Leaders, performing an upgrade, and disabling standby Leader Nodes.
Monitor Primary and Standby Leader Nodes
To view the status of your Leader Nodes:
- On the top bar, select Products, and then select Stream.
- In the sidebar, select Monitoring, then System, then Leaders.
- In the Leaders table, you can see the status of all your Leader, including the roles they play (primary or standby).
This page is only accessible when you have a standby Leader configured.
Upgrade a High Availability Deployment
Upgrading the Leader Node through the UI is not supported for Distributed deployments with a standby Leader. Instead, use the command line (CLI) to upgrade.
Follow this upgrade order:
- Stop the standby Leader first.
- Upgrade the standby Leader.
- Start the standby Leader.
- Stop the primary Leader; the upgraded standby will take over automatically through the HA failover mechanism.
- Upgrade the now-stopped former primary Leader for your Stream or Edge deployment.
- Start the former primary Leader. It will rejoin and assume the standby role (since the other Leader is currently active).
- Upgrade Worker Nodes in rolling batches; do not upgrade them to a version newer than the Leader.
Disable a Standby Leader
Cribl recommends that you maintain a standby Leader to ensure continuity in your on-prem Distributed deployment. Should you decide to disable it, contact support to assist you.