Provided by: netplan.io_0.40.2_amd64
netplan-try - try a configuration, optionally rolling it back
netplan [–debug] try -h | –help netplan [–debug] try [–config-file CONFIG_FILE] [–timeout TIMEOUT]
netplan try takes a netplan(5) configuration, applies it, and automatically rolls it back if the user does not confirm the configuration within a time limit. This may be especially useful on remote systems, to prevent an administrator being permanently locked out of systems in the case of a network configuration error.
-h, –help Print basic help. –debug Print debugging output during the process. –config-file CONFIG_FILE In addition to the usual configuration, apply CONFIG_FILE. It must be a YAML file in the netplan(5) format. –timeout TIMEOUT Wait for TIMEOUT seconds before reverting. Defaults to 120 seconds. Note that some network configurations (such as STP) may take over a minute to settle.
netplan try uses similar procedures to netplan apply, so some of the same caveats apply around virtual devices. There are also some known bugs: if netplan try times out or is cancelled, make sure to verify if the network configuration has in fact been reverted. As with netplan apply, a reboot should fix any issues. However, be sure to verify that the config on disk is in the state you expect before rebooting!
netplan(5), netplan-generate(8), netplan-apply(8)
Daniel Axtens (<email@example.com>). netplan-try(8)