Netplan

dbus Try command fails on UC while trying to run nmcli

Bug #2026819 reported by Alfonso Sanchez-Beato on 2023-07-11

This bug report is a duplicate of: Bug #1959570: netplan crashes on UbuntuCore with the network-manager snap installed. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Netplan	New	Undecided	Unassigned

Bug Description

On Ubuntu Core, with the network-manager snap installed, Try fails when trying to modify a NM connection:

ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config
o "/io/netplan/Netplan/config/X6QL71"

ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/X6QL71 io.netplan.Netplan.Config Set ss network.modems.NM-44806e5e-1a4c-4ac7-b8eb-c7c9bcf5dc70.apn=yyyyyy.com ""
b true

ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/X6QL71 io.netplan.Netplan.Config Try u 0
b false

Config object disappears after this failure:
ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/X6QL71 io.netplan.Netplan.Config Get
Call failed: Unknown object '/io/netplan/Netplan/config/X6QL71'.

Journal reveals that it cannot find nmcli:

Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: Traceback (most recent call last):
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/try_command.py", line 99, in command_try
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: NetplanApply().command_apply(run_generate=True, sync=True, exit_on_error=False, state_dir=self.state)
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/apply.py", line 287, in command_apply
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: if b'\nconnected' in subprocess.check_output(cmd, env=env):
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 420, in check_output
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 501, in run
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: with Popen(*popenargs, **kwargs) as process:
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 969, in __init__
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self._execute_child(args, executable, preexec_fn, close_fds,
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 1845, in _execute_child
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: raise child_exception_type(errno_num, err_msg, err_filename)
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: FileNotFoundError: [Errno 2] No such file or directory: 'nmcli'
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: During handling of the above exception, another exception occurred:
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: Traceback (most recent call last):
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/sbin/netplan", line 23, in <module>
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: netplan.main()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/core.py", line 50, in main
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self.run_command()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/utils.py", line 247, in run_command
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self.func()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/try_command.py", line 81, in run
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self.run_command()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/utils.py", line 247, in run_command
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self.func()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/try_command.py", line 113, in command_try
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self.revert()
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/try_command.py", line 143, in revert
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: NetplanApply().command_apply(run_generate=False, sync=True, exit_on_error=False, state_dir=tempdir)
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/share/netplan/netplan/cli/commands/apply.py", line 287, in command_apply
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: if b'\nconnected' in subprocess.check_output(cmd, env=env):
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 420, in check_output
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 501, in run
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: with Popen(*popenargs, **kwargs) as process:
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 969, in __init__
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: self._execute_child(args, executable, preexec_fn, close_fds,
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: File "/usr/lib/python3.10/subprocess.py", line 1845, in _execute_child
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: raise child_exception_type(errno_num, err_msg, err_filename)
Jul 11 09:16:21 ubuntu io.netplan.Netplan[2413]: FileNotFoundError: [Errno 2] No such file or directory: 'nmcli'

Revision history for this message

Alfonso Sanchez-Beato (alfonsosanchezbeato) wrote on 2023-07-11:

Running Apply works, but the ethernet connection is somewhat dropped and a netplan apply is required to get it back:

ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config
o "/io/netplan/Netplan/config/BWKZ71"
ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/BWKZ71 io.netplan.Netplan.Config Set ss network.modems.NM-44806e5e-1a4c-4ac7-b8eb-c7c9bcf5dc70.apn=gggggg.com ""
b true
ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/BWKZ71 io.netplan.Netplan.Config Apply
b true
ubuntu@ubuntu:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
ubuntu@ubuntu:~$ sudo netplan apply
ubuntu@ubuntu:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 brd 10.0.2.255 scope global dynamic noprefixroute ens3
       valid_lft 86399sec preferred_lft 86399sec
    inet6 fec0::9c6f:c7cd:f8ab:a83b/64 scope site temporary tentative dynamic
       valid_lft 86400sec preferred_lft 14400sec
    inet6 fec0::5054:ff:fe12:3456/64 scope site tentative dynamic mngtmpaddr
       valid_lft 86400sec preferred_lft 14400sec
    inet6 fe80::5054:ff:fe12:3456/64 scope link
       valid_lft forever preferred_lft forever

Running Apply works, but the ethernet connection is somewhat dropped and a netplan apply is required to get it back:

ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config
o "/io/netplan/Netplan/config/BWKZ71"
ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/BWKZ71 io.netplan.Netplan.Config Set ss network.modems.NM-44806e5e-1a4c-4ac7-b8eb-c7c9bcf5dc70.apn=gggggg.com ""
b true
ubuntu@ubuntu:~$ sudo busctl call io.netplan.Netplan /io/netplan/Netplan/config/BWKZ71 io.netplan.Netplan.Config Apply
b true
ubuntu@ubuntu:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
ubuntu@ubuntu:~$ sudo netplan apply
ubuntu@ubuntu:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 brd 10.0.2.255 scope global dynamic noprefixroute ens3
       valid_lft 86399sec preferred_lft 86399sec
    inet6 fec0::9c6f:c7cd:f8ab:a83b/64 scope site temporary tentative dynamic 
       valid_lft 86400sec preferred_lft 14400sec
    inet6 fec0::5054:ff:fe12:3456/64 scope site tentative dynamic mngtmpaddr 
       valid_lft 86400sec preferred_lft 14400sec
    inet6 fe80::5054:ff:fe12:3456/64 scope link 
       valid_lft forever preferred_lft forever

Revision history for this message

Lukas Märdian (slyon) wrote on 2023-07-11:

This might be a duplicate of bug #1959570

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