Troubleshoot Junos PyEZ Errors When Configuring Junos Devices

Problem

RpcTimeoutError(host: dc1a.example.com, cmd: commit-configuration, timeout: 30)

Cause

The default time for a NETCONF RPC to time out is 30 seconds. Large configuration changes might exceed this value causing the operation to time out before the configuration can be uploaded and committed.

Solution

To accommodate configuration changes that might require a commit time that is longer than the default timeout interval, set the timeout interval to an appropriate value and rerun the code. To configure the interval, either set the Device timeout property to an appropriate value, or include the timeout=seconds argument in the commit() or set() method when you load and commit configuration data on a device. For example:

dev = Device(host="host")
dev.open()
dev.timeout = 300

with Config(dev, mode='exclusive') as cu:
    cu.load(path='junos-config.conf', merge=True)
    cu.commit(timeout=360)

dev.close()

Problem

LockError(severity: error, bad_element: None, message: configuration database modified)

Cause

A configuration lock error can occur for the following reasons:

• Another user has an exclusive lock on the configuration.

• The shared configuration database has uncommitted changes.

• The user executing the Junos PyEZ code does not have permissions to configure the device.

Solution

If another user has an exclusive lock on the configuration or has modified the configuration, wait until the lock is released or the changes are committed, and execute the code again. If the cause of the issue is that the user does not have permissions to configure the device, either execute the program with a user who has the necessary permissions, or if appropriate, configure the Junos device to give the current user the necessary permissions to make the changes.

Problem

ConfigLoadError(severity: error, bad_element: scripts, message: permission denied)

Cause

This error message might be generated when the user executing the Junos PyEZ code has permission to alter the configuration, but does not have permission to alter the desired portion of the configuration.

Solution

Either execute the program with a user who has the necessary permissions, or if appropriate, configure the Junos device to give the current user the necessary permissions to make the changes.