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Troubleshooting

Diagnosing problems in NATS JetStream clusters requires:
The following tips and commands (while not an exhaustive list) can be useful when diagnosing problems in NATS JetStream clusters:

Troubleshooting tips

  1. 1.
    Look at nats-server 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 server config.
  2. 2.
    Make sure that in the NATS JetStream configuration, at least one system user is configured in this section: { $SYS { users } }.

nats account commands

Command
Description
Verify that JetStream is enabled on account

Basic nats server commands

Command
Description
nats 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 commands

Command
Description
nats server report connections
Report on connections
nats server report accounts
Report on account activity
Report on JetStream activity

nats server request commands

Command
Description
Show 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 raft commands

Command
Description
Force a new leader election by standing down the current meta leader
Removes a server from a JetStream cluster

Experimental commands

Command
Description
Monitor NATS traffic. (Experimental command)

Further troubleshooting references

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Super-cluster with Gateways
Last modified 6mo ago