jhack explode when no slot connected and no .config folder exist #224
Description
Bug Description
I have started new LXC VM: lxc launch --vm ubuntu:24.04 2xenrico
and installed Canonical K8s + Juju + jhack there to fire an event (freshly installed no snap slots connected, no /root/.config/jhack folder, etc). Jhack explode into my face (see below) on jhack fire postgresql-k8s/0 update-status.
To Reproduce
See above in the bug description.
Environment
root@2xenrico:~# snap list
Name Version Rev Tracking Publisher Notes
core20 20250526 2599 latest/stable canonical✓ base
core24 20250504 988 latest/stable canonical✓ base
jhack 0.4.4.0.20.27 547 latest/edge ppasotti -
juju 3.6.7 31266 3/stable canonical✓ -
k8s v1.32.5 3581 1.32-classic/stable canonical✓ classic
kubectl 1.32.5 3593 latest/stable canonical✓ classic
snapd 2.68.4 24505 latest/stable canonical✓ snapd
root@2xenrico:~#
Relevant log output
root@2xenrico:~# jhack fire postgresql-k8s/0 update-status
ERROR:jhack:It seems like the snap doesn't have access to /root/.local/share/juju;to grant it, run 'sudo snap connect jhack:dot-local-share-juju snapd'.Some Jhack commands will still work, but those that interact with the juju client will not.
--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.12/pathlib.py", line 1313, in mkdir
os.mkdir(self, mode)
FileNotFoundError: [Errno 2] No such file or directory: '/root/.config/jhack'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/conf/conf.py", line 48, in _get_config_path
jconf.parent.mkdir(parents=True, exist_ok=True)
File "/usr/lib/python3.12/pathlib.py", line 1317, in mkdir
self.parent.mkdir(parents=True, exist_ok=True)
File "/usr/lib/python3.12/pathlib.py", line 1313, in mkdir
os.mkdir(self, mode)
PermissionError: [Errno 13] Permission denied: '/root/.config'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.12/logging/__init__.py", line 1160, in emit
msg = self.format(record)
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 999, in format
return fmt.format(record)
^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 703, in format
record.message = record.getMessage()
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 392, in getMessage
msg = msg % self.args
~~~~^~~~~~~~~~~
TypeError: not all arguments converted during string formatting
Call stack:
File "/snap/jhack/547/bin/jhack", line 8, in <module>
sys.exit(main())
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/main.py", line 25, in main
from jhack.chaos.flicker import flicker
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 995, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/chaos/flicker.py", line 9, in <module>
from jhack.conf.conf import check_destructive_commands_allowed
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 995, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/conf/conf.py", line 225, in <module>
CONFIG = Config()
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/conf/conf.py", line 26, in __init__
path, is_default = self._get_config_path()
File "/snap/jhack/547/lib/python3.12/site-packages/jhack/conf/conf.py", line 54, in _get_config_path
logger.exception(
Message: 'Error encountered while attempting to initialize user config: '
Arguments: ("Failed to create default user config in /root/.config/jhack/config.toml. You'll have to do that manually.",)
╭───────────────────────────────────────────────────────────────────────────────────────────────────────── Traceback (most recent call last) ──────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:565 in simulate_event │
│ │
│ 562 │ ╭─────────────── locals ───────────────╮ │
│ 563 │ Especially useful in combination with jhack charm sync and/or debug-code/debug-hooks │ check_name = None │ │
│ 564 │ """ │ dry_run = None │ │
│ ❱ 565 │ return _simulate_event( │ env_override = None │ │
│ 566 │ │ target, │ event = 'update-status' │ │
│ 567 │ │ event, │ model = None │ │
│ 568 │ │ relation_remote=relation_remote, │ notice_id = None │ │
│ │ parallel = None │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret = None │ │
│ │ show_output = True │ │
│ │ target = 'postgresql-k8s/0' │ │
│ ╰──────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:421 in _simulate_event │
│ │
│ 418 │ if not targets: ╭─────────────────── locals ───────────────────╮ │
│ 419 │ │ sys.exit(f"invalid target: {target!r} not found in {model or '<the current model │ check_name = None │ │
│ 420 │ │ dry_run = None │ │
│ ❱ 421 │ cmds = tuple( │ emit_juju_log = True │ │
│ 422 │ │ _build_command( │ env_override = None │ │
│ 423 │ │ │ unit=unit_name, │ event = 'update-status' │ │
│ 424 │ │ │ event=event, │ model = None │ │
│ │ notice_id = None │ │
│ │ operator_dispatch = False │ │
│ │ parallel = None │ │
│ │ print_captured_stderr = True │ │
│ │ print_captured_stdout = True │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret_id_or_label = None │ │
│ │ target = 'postgresql-k8s/0' │ │
│ │ targets = ['postgresql-k8s/0'] │ │
│ ╰──────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:433 in <genexpr> │
│ │
│ 430 │ │ │ secret_id_or_label=secret_id_or_label, ╭─────────────────────────── locals ────────────────────────────╮ │
│ 431 │ │ │ operator_dispatch=operator_dispatch, │ .0 = <list_iterator object at 0x748f80dd4400> │ │
│ 432 │ │ │ env_override=env_override, │ check_name = None │ │
│ ❱ 433 │ │ │ has_dispatch=is_dispatch_aware(unit_name, model), │ env_override = None │ │
│ 434 │ │ ) │ event = 'update-status' │ │
│ 435 │ │ for unit_name in targets │ model = None │ │
│ 436 │ ) │ notice_id = None │ │
│ │ operator_dispatch = False │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret_id_or_label = None │ │
│ │ unit_name = 'postgresql-k8s/0' │ │
│ ╰───────────────────────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/helpers.py:272 in is_dispatch_aware │
│ │
│ 269 │ except CalledProcessError as e: ╭─────────────────────────────────────────────── locals ────────────────────────────────────────────────╮ │
│ 270 │ │ if e.returncode == 1: │ _model = '' │ │
│ 271 │ │ │ return False │ cmd = 'juju ssh postgresql-k8s/0 cat /var/lib/juju/agents/unit-postgresql-k8s-0/charm/d'+7 │ │
│ ❱ 272 │ │ raise e │ model = None │ │
│ 273 │ unit = 'postgresql-k8s/0' │ │
│ 274 │ unit_sanitized = 'unit-postgresql-k8s-0' │ │
│ 275 @contextlib.contextmanager ╰───────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/helpers.py:267 in is_dispatch_aware │
│ │
│ 264 │ cmd = f"juju ssh{_model} {unit} cat /var/lib/juju/agents/{unit_sanitized}/charm/disp ╭─────────────────────────────────────────────── locals ────────────────────────────────────────────────╮ │
│ 265 │ logger.debug(f"running {cmd}") │ _model = '' │ │
│ 266 │ try: │ cmd = 'juju ssh postgresql-k8s/0 cat /var/lib/juju/agents/unit-postgresql-k8s-0/charm/d'+7 │ │
│ ❱ 267 │ │ check_call(shlex.split(cmd), stdout=PIPE, stderr=PIPE) │ model = None │ │
│ 268 │ │ return True │ unit = 'postgresql-k8s/0' │ │
│ 269 │ except CalledProcessError as e: │ unit_sanitized = 'unit-postgresql-k8s-0' │ │
│ 270 │ │ if e.returncode == 1: ╰───────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /usr/lib/python3.12/subprocess.py:413 in check_call │
│ │
│ 410 │ │ cmd = kwargs.get("args") ╭──────────────────────────────────────────────────────── locals ────────────────────────────────────────────────────────╮ │
│ 411 │ │ if cmd is None: │ cmd = ['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch'] │ │
│ 412 │ │ │ cmd = popenargs[0] │ kwargs = {'stdout': -1, 'stderr': -1} │ │
│ ❱ 413 │ │ raise CalledProcessError(retcode, cmd) │ popenargs = (['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch'],) │ │
│ 414 │ return 0 │ retcode = 2 │ │
│ 415 ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ 416 │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
CalledProcessError: Command '['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch']' returned non-zero exit status 2.
Manually creating the folder has helped a bit:
root@2xenrico:~# mkdir -p /root/.config/jhack
root@2xenrico:~# jhack fire postgresql-k8s/0 update-status
ERROR:jhack:It seems like the snap doesn't have access to /root/.local/share/juju;to grant it, run 'sudo snap connect jhack:dot-local-share-juju snapd'.Some Jhack commands will still work, but those that interact with the juju client will not.
╭───────────────────────────────────────────────────────────────────────────────────────────────────────── Traceback (most recent call last) ──────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:565 in simulate_event │
│ │
│ 562 │ ╭─────────────── locals ───────────────╮ │
│ 563 │ Especially useful in combination with jhack charm sync and/or debug-code/debug-hooks │ check_name = None │ │
│ 564 │ """ │ dry_run = None │ │
│ ❱ 565 │ return _simulate_event( │ env_override = None │ │
│ 566 │ │ target, │ event = 'update-status' │ │
│ 567 │ │ event, │ model = None │ │
│ 568 │ │ relation_remote=relation_remote, │ notice_id = None │ │
│ │ parallel = None │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret = None │ │
│ │ show_output = True │ │
│ │ target = 'postgresql-k8s/0' │ │
│ ╰──────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:421 in _simulate_event │
│ │
│ 418 │ if not targets: ╭─────────────────── locals ───────────────────╮ │
│ 419 │ │ sys.exit(f"invalid target: {target!r} not found in {model or '<the current model │ check_name = None │ │
│ 420 │ │ dry_run = None │ │
│ ❱ 421 │ cmds = tuple( │ emit_juju_log = True │ │
│ 422 │ │ _build_command( │ env_override = None │ │
│ 423 │ │ │ unit=unit_name, │ event = 'update-status' │ │
│ 424 │ │ │ event=event, │ model = None │ │
│ │ notice_id = None │ │
│ │ operator_dispatch = False │ │
│ │ parallel = None │ │
│ │ print_captured_stderr = True │ │
│ │ print_captured_stdout = True │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret_id_or_label = None │ │
│ │ target = 'postgresql-k8s/0' │ │
│ │ targets = ['postgresql-k8s/0'] │ │
│ ╰──────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/utils/simulate_event.py:433 in <genexpr> │
│ │
│ 430 │ │ │ secret_id_or_label=secret_id_or_label, ╭─────────────────────────── locals ────────────────────────────╮ │
│ 431 │ │ │ operator_dispatch=operator_dispatch, │ .0 = <list_iterator object at 0x70b4e8f5b640> │ │
│ 432 │ │ │ env_override=env_override, │ check_name = None │ │
│ ❱ 433 │ │ │ has_dispatch=is_dispatch_aware(unit_name, model), │ env_override = None │ │
│ 434 │ │ ) │ event = 'update-status' │ │
│ 435 │ │ for unit_name in targets │ model = None │ │
│ 436 │ ) │ notice_id = None │ │
│ │ operator_dispatch = False │ │
│ │ relation_id = None │ │
│ │ relation_remote = None │ │
│ │ secret_id_or_label = None │ │
│ │ unit_name = 'postgresql-k8s/0' │ │
│ ╰───────────────────────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/helpers.py:272 in is_dispatch_aware │
│ │
│ 269 │ except CalledProcessError as e: ╭─────────────────────────────────────────────── locals ────────────────────────────────────────────────╮ │
│ 270 │ │ if e.returncode == 1: │ _model = '' │ │
│ 271 │ │ │ return False │ cmd = 'juju ssh postgresql-k8s/0 cat /var/lib/juju/agents/unit-postgresql-k8s-0/charm/d'+7 │ │
│ ❱ 272 │ │ raise e │ model = None │ │
│ 273 │ unit = 'postgresql-k8s/0' │ │
│ 274 │ unit_sanitized = 'unit-postgresql-k8s-0' │ │
│ 275 @contextlib.contextmanager ╰───────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /snap/jhack/547/lib/python3.12/site-packages/jhack/helpers.py:267 in is_dispatch_aware │
│ │
│ 264 │ cmd = f"juju ssh{_model} {unit} cat /var/lib/juju/agents/{unit_sanitized}/charm/disp ╭─────────────────────────────────────────────── locals ────────────────────────────────────────────────╮ │
│ 265 │ logger.debug(f"running {cmd}") │ _model = '' │ │
│ 266 │ try: │ cmd = 'juju ssh postgresql-k8s/0 cat /var/lib/juju/agents/unit-postgresql-k8s-0/charm/d'+7 │ │
│ ❱ 267 │ │ check_call(shlex.split(cmd), stdout=PIPE, stderr=PIPE) │ model = None │ │
│ 268 │ │ return True │ unit = 'postgresql-k8s/0' │ │
│ 269 │ except CalledProcessError as e: │ unit_sanitized = 'unit-postgresql-k8s-0' │ │
│ 270 │ │ if e.returncode == 1: ╰───────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /usr/lib/python3.12/subprocess.py:413 in check_call │
│ │
│ 410 │ │ cmd = kwargs.get("args") ╭──────────────────────────────────────────────────────── locals ────────────────────────────────────────────────────────╮ │
│ 411 │ │ if cmd is None: │ cmd = ['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch'] │ │
│ 412 │ │ │ cmd = popenargs[0] │ kwargs = {'stdout': -1, 'stderr': -1} │ │
│ ❱ 413 │ │ raise CalledProcessError(retcode, cmd) │ popenargs = (['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch'],) │ │
│ 414 │ return 0 │ retcode = 2 │ │
│ 415 ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯ │
│ 416 │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
CalledProcessError: Command '['juju', 'ssh', 'postgresql-k8s/0', 'cat', '/var/lib/juju/agents/unit-postgresql-k8s-0/charm/dispatch']' returned non-zero exit status 2.
root@2xenrico:~# sudo snap connect jhack:dot-local-share-juju snapd
root@2xenrico:~# jhack fire postgresql-k8s/0 update-status # finally all works hereAdditional context
No response