Troubleshooting
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Diagnosing problems in NATS JetStream clusters requires:
knowledge of
knowledge of the
The following tips and commands (while not an exhaustive list) can be useful when diagnosing problems in NATS JetStream clusters:
Look at logs. By default, only warning and error logs are produced, but debug and trace logs can be turned on from the command line using -D and -DV, respectively. Alternatively, enabling debug or trace in the .
Make sure that in the , at least one system user is configured in this section: { $SYS { users } }.
nats account commandsVerify that JetStream is enabled on account
nats server commandsnats server ls
List known servers
nats server ping
Ping all servers
nats server info
Show information about a single server
Health check for NATS servers
nats server report commandsnats server report connections
Report on connections
nats server report accounts
Report on account activity
Report on JetStream activity
nats server request commandsShow JetStream details
nats server request subscriptions
Show subscription information
nats server request variables
Show runtime variables
nats server request connections
Show connection details
nats server request routes
Show route details
nats server request gateways
Show gateway details
nats server request leafnodes
Show leafnode details
nats server request accounts
Show account details
nats server cluster commandsForce a new leader election by standing down the current meta leader
Removes a server from a JetStream cluster
Monitor NATS traffic. (Experimental command)