ltcluster 5.2.1 Documentation

Table of Contents

I. Getting started

1. ltcluster overview

2. Quick-start guide

II. ltcluster administration manual

3. ltcluster configuration

4. Cloning standbys

5. Promoting a standby server with ltcluster

6. Following a new primary

7. Performing a switchover with ltcluster

8. Event Notifications

III. Using ltclusterd

9. ltclusterd overview

10. Automatic failover with ltclusterd

11. ltclusterd setup and configuration

12. ltclusterd operation

IV. ltcluster command reference

ltcluster primary register — initialise a ltcluster installation and register the primary node

ltcluster primary unregister — unregister an inactive primary node

ltcluster standby clone — clone a LightDB standby node from another LightDB node

ltcluster standby register — add a standby's information to the ltcluster metadata

ltcluster standby unregister — remove a standby's information from the ltcluster metadata

ltcluster standby promote — promote a standby to a primary

ltcluster standby follow — attach a running standby to a new upstream node

ltcluster standby switchover — promote a standby to primary and demote the existing primary to a standby

ltcluster witness register — add a witness node's information to the ltcluster metadata

ltcluster witness unregister — remove a witness node's information to the ltcluster metadata

ltcluster node status — show overview of a node's basic information and replication status

ltcluster node check — performs some health checks on a node from a replication perspective

ltcluster node rejoin — rejoin a dormant (stopped) node to the replication cluster

ltcluster node service — show or execute the system service command to stop/start/restart/reload/promote a node

ltcluster cluster show — display information about each registered node in the replication cluster

ltcluster cluster matrix — runs ltcluster cluster show on each node and summarizes output

ltcluster cluster crosscheck — cross-checks connections between each combination of nodes

ltcluster cluster event — output a formatted list of cluster events

ltcluster cluster cleanup — purge monitoring history

ltcluster service status — display information about the status of ltclusterd on each node in the cluster

ltcluster service pause — Instruct all ltclusterd instances in the replication cluster to pause failover operations

ltcluster service unpause — Instruct all ltclusterd instances in the replication cluster to resume failover operations

ltcluster daemon start — Start the ltclusterd daemon on the local node

ltcluster daemon stop — Stop the ltclusterd daemon on the local node

Index