[15:22] <tuxcrafter58> hello all I am migrating some systems from ubuntu 20 to ubuntu 22 and the way network-manager / netplan are behaving is very different and is causing me issue.
[15:22] <tuxcrafter58> nmcli con add type wifi con-name hq-wifi ifname wlan0 ssid "{{vault_nmcli_hq_ssid}}" used to create this file /etc/NetworkManager/system-connections/hq-wifi.nmconnection
[15:22] <tuxcrafter58> however on ubuntu 22 i do not have any files in /etc/NetworkManager/system-connections/ anymore
[15:22] <tuxcrafter58> however I do see files under /etc/netplan/ but they are sorted by some UUID and everytime I run nmcli con add type wifi con-name hq-wifi it creates a new file with UUID
[15:22] <tuxcrafter58> causing me to have many config files for the same network name
[15:22] <tuxcrafter58> I am looking for a way to know if nmcli con add type wifi con-name hq-wifi has been created without the use of any uuid if possible
[15:23] <tuxcrafter58> Is there a way change some config file so files are stored under /etc/NetworkManager/system-connections/  again?
[15:25] <tuxcrafter58> or is there a way to use nmcli con add type wifi con-name hq-wifi ifname wlan0 ssid and have config file under /etc/netplan/ that matches the con-name instead of generating a new file with an uuid, i now got a few hundred uuid config files all for the same wifi network.
=== tuxcrafter58 is now known as tuxcrafter
[15:29] <slyon> tuxcrafter: I guess you could you "nmcli con show hq-wifi", which will error out if that connection-profile does not exist
[15:30] <slyon> alternatively, check the connection profiles generated by Netplan in /run/NetworkManager/sytem-connections. but I think those would also contain the UUID in the file name. In addition to the SSID
[15:30] <tuxcrafter> # nmcli con show hq-wifi | wc -l
[15:30] <tuxcrafter> 5359
[15:30] <tuxcrafter> Isn't it a bug that the same connection can have multiple uuids?
[15:32] <tuxcrafter> ls -hal /run/NetworkManager/system-connections/ all those files are based on an UUID not on the nmcli con-name
[15:32] <danilogondolfo> they can have the same name but not uuids, as far as I know
[15:32] <tuxcrafter> I could not see the option to use nmcli con add with an UUID instead of the con-name, is there an option I am missing there?
[15:32] <danilogondolfo> so you create connections but never delete them?
[15:34] <danilogondolfo> how did you delete connections before? By deleting them from /etc/NetworkManager/system-connections?
[15:35] <tuxcrafter> it used to be that con-name corresponded to a config file, so I would check for /etc/NetworkManager/system-connections/hq-wifi.nmconnection but this does not work anymore
[15:35] <tuxcrafter> unless there is an option to revert back to this behaviour that I am missing.
[15:40] <danilogondolfo> as slyon said, you can check it with "nmcli con show hq-wifi" or look for a file with "hq-wifi" in its name in /run/NetworkManager/sytem-connections. But you need to delete the old files first now.
[15:41] <danilogondolfo> if you want to drop all the connections quickly you can delete /etc/netplan/90-NM-* and run netplan apply
[15:42] <danilogondolfo> and now you need to delete the connection after finishing your tests with "nmcli con del hq-wifi"
[15:43] <slyon> I guess you could also call `nmcli con del hq-wifi` to have all connection profiles with that name be deleted.
[15:44] <slyon> btw: There's no way to revert back to /etc/NetworkManager/system-connections/*.nmconnection profiles. Netplan was chosen to be the single source of network configuration, as found in /etc/netplan/
[15:45] <tuxcrafter> Okay so the only way is to use nmcli con show hq-wifi to check if the connection exist
[15:45] <tuxcrafter> no more reliable way to check through the file system
[15:59] <slyon> you could "sudo netplan get | yq" and filter/process that as needed through yq, or any other YAML processing logic. But that might be overkill, given the `nmcli` commands from above.