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podman.from_env() not working #223

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josecastillolema opened this issue Dec 3, 2022 · 17 comments · Fixed by #253
Closed

podman.from_env() not working #223

josecastillolema opened this issue Dec 3, 2022 · 17 comments · Fixed by #253

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@josecastillolema
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Everytime I try podman.from_env() I get this error:

>>> import podman
>>> podman.from_env()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/podman/client.py", line 131, in from_env
    max_pool_size=max_pool_size,
  File "/usr/local/lib/python3.6/site-packages/podman/client.py", line 76, in __init__
    self.api = APIClient(**api_kwargs)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 116, in __init__
    self.base_url = self._normalize_url(base_url)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 159, in _normalize_url
    f"The scheme '{uri.scheme}' must be one of {APIClient.supported_schemes}"
ValueError: The scheme 'b''' must be one of ('unix', 'http+unix', 'ssh', 'http+ssh', 'tcp', 'http')

Have tried CentOS 8 stream with a native podman setup and MacOS with podman machine.

Are they any pre-reqs to be able to use podman.from_env() ?

Thanks

CentOS Stream release 8:

$ podman version
Client:       Podman Engine
Version:      4.2.0
API Version:  4.2.0
Go Version:   go1.18.4
Built:        Wed Sep 21 13:15:04 2022
OS/Arch:      linux/amd64

MacOS:

% podman version
Client:       Podman Engine
Version:      4.3.0
API Version:  4.3.0
Go Version:   go1.19
Git Commit:   ad42af94903ce4f3c3cd0693e4e17e4286bf094b
Built:        Wed Oct 19 15:33:33 2022
OS/Arch:      darwin/amd64

Server:       Podman Engine
Version:      4.3.1
API Version:  4.3.1
Go Version:   go1.19.2
Built:        Fri Nov 11 16:01:27 2022
OS/Arch:      linux/amd64
@cjw296
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cjw296 commented Feb 28, 2023

Same...

@bdherouville
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This works. Be sure to activate podman.socket services :
sudo systemctl enable podman.socket
sudo systemctl start podman.socket

podman_client = podman.PodmanClient(base_url="http+unix:///var/run/podman/podman.sock")

@cjw296
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cjw296 commented Mar 1, 2023

@bdherouville - it really doesn't. I've had better experience connecting to podman using the docker Python library than this one, which is pretty disappointing.

@jwhonce
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jwhonce commented Mar 7, 2023

@josecastillolema From the stack trace line ValueError: The scheme 'b''' must be one of ('unix', 'http+unix', 'ssh', 'http+ssh', 'tcp', 'http') it appears neither CONTAINER_HOST or DOCKER_HOST is in your environment.

@josecastillolema
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@bdherouville I dont think the provided workaround works:

$ sudo systemctl enable podman.socket
Created symlink /etc/systemd/system/sockets.target.wants/podman.socket → /usr/lib/systemd/system/podman.socket.

$ sudo systemctl start podman.socket

$ podman ps
CONTAINER ID  IMAGE       COMMAND     CREATED     STATUS      PORTS       NAMES

$ python3
Python 3.6.8 (default, Jan 19 2022, 23:28:49) 
[GCC 8.5.0 20210514 (Red Hat 8.5.0-7)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import podman
>>> podman.from_env()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/podman/client.py", line 131, in from_env
    max_pool_size=max_pool_size,
  File "/usr/local/lib/python3.6/site-packages/podman/client.py", line 76, in __init__
    self.api = APIClient(**api_kwargs)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 116, in __init__
    self.base_url = self._normalize_url(base_url)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 159, in _normalize_url
    f"The scheme '{uri.scheme}' must be one of {APIClient.supported_schemes}"
ValueError: The scheme 'b''' must be one of ('unix', 'http+unix', 'ssh', 'http+ssh', 'tcp', 'http')

@josecastillolema
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Hi @jwhonce ,
neither CONTAINER_HOST nor DOCKER_HOST are defined in my environment:

$ env | grep CONTAINER_HOST
$ env | grep DOCKER_HOST

Should they be?
I installed podman via: sudo dnf install -y podman

@bdherouville
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I don't understand, I looked at the python source and the method is : PodmanClient()

After enabling podman.socket I was able to access podman from python using :

podman.PodmanClient(base_url="http+unix:///var/run/podman/podman.sock")

@josecastillolema
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@bdherouville

$ python3

>>> import podman

>>> client = podman.PodmanClient(base_url="http+unix:///var/run/podman/podman.sock")

>>> client
<podman.client.PodmanClient object at 0x7f2ed2196438>

>>> client.images.list()
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 43, in connect
    super().connect(netloc)
PermissionError: [Errno 13] Permission denied

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
podman.errors.exceptions.APIError: Unable to make connection to UDS '/var/run/podman/podman.sock'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 450, in send
    timeout=timeout
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/usr/lib/python3.6/site-packages/urllib3/util/retry.py", line 368, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/lib/python3.6/site-packages/urllib3/packages/six.py", line 692, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
urllib3.exceptions.ProtocolError: ('Connection aborted.', APIError("Unable to make connection to UDS '/var/run/podman/podman.sock'",))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 411, in _request
    **timeout_kw,
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 529, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 645, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 501, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', APIError("Unable to make connection to UDS '/var/run/podman/podman.sock'",))

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/podman/domain/images_manager.py", line 56, in list
    response = self.client.get("/images/json", params=params)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 243, in get
    **kwargs,
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 415, in _request
    raise APIError(uri.geturl(), explanation=f"{method.upper()} operation failed") from e
podman.errors.exceptions.APIError: http://%2Fvar%2Frun%2Fpodman%2Fpodman.sock/v4.3.0/libpod/images/json (GET operation failed)

@bdherouville
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bdherouville commented Mar 8, 2023 •
edited

Hi @josecastillolema

I just tested on my machine. It is probably an issue with the right on /var/run/podman/podman.sock

I need to test to restart the podman.socket service and run it as root:wheel

bash-4.4# python3 
Python 3.6.8 (default, Jan 11 2023, 08:43:50) 
[GCC 8.5.0 20210514 (Red Hat 8.5.0-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import podman
>>> client = podman.PodmanClient(base_url="http+unix:///var/run/podman/podman.sock")
>>> client
<podman.client.PodmanClient object at 0x7f3f06b46e10>
>>> client.images.list()
[<Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:847027714e33fd897a4212811c881ec8c736e068c9a81b968346c3e5c90b3c8b'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:9f0cdc00b1b1a3c17411e50653253b9f6bb5329ea4fb82ad983790a6dbf2d9ad'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:bc620e8c2cb2e1321215ef801a860b80a266c9269e2d765a057fd80e7e76332d'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:14794ac4b4b5e1bb2728d253b939578a03730cf26ba5cf795c8e2d26b9737dd6'>, <Image: 'registry.access.redhat.com/ubi8/openssl@sha256:9e743d947be073808f7f1750a791a3dbd81e694e37161e8c6c6057c2c342d671'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:dfdf833d03dac36b747951107a25ab6424eb387bb140f344d4be8d8c7f4e895f'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:fa1ff52055ededc0386ee6b334ffe0cd9252f5878fcccf1396aee30adf6de046'>, <Image: 'registry.redhat.io/lvms4/topolvm-rhel8@sha256:10bffded5317da9de6c45ba74f0bb10e0a08ddb2bfef23b11ac61287a37f10a1'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:c28f27a3a10df13e5e8c074e8734683a6603ebaccd9d67e2095070fb6859b1d6'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:6bd9d4dc813a01257767fb3b16395e8aee044feec410ed8e93ee1e82daf5a744'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:12be6984e3a56cbc5b2a5272a872a40b242cce8a0f167993107c6de6bf776c53'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:836d284f0c24a1d400cebc0f25e8172c28e7476879bfffe1071fb9ceb169c9ce'>, <Image: 'quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:f18e0cf76a2ac840c9f66f89f1b47aced70650021e7931199659aef9cbca31e0'>, <Image: 'registry.k8s.io/prometheus-adapter/prometheus-adapter:v0.10.0'>, <Image: 'k8s.gcr.io/metrics-server/metrics-server:v0.6.2'>, <Image: 'quay.io/prometheus-operator/prometheus-operator:v0.63.0'>, <Image: 'docker.io/fabxc/instrumented_app:latest'>, <Image: 'quay.io/prometheus-operator/prometheus-config-reloader:v0.63.0'>, <Image: 'quay.io/prometheus/prometheus:v2.42.0'>, <Image: 'registry.k8s.io/debian-base:v2.0.0'>, <Image: 'docker.io/grafana/grafana:latest'>]

@rhatdan
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rhatdan commented Mar 8, 2023

you should NOT be communication with the /var/run/podman/podman.sock from non root users. If you want to run rootless containers then you should start a rootless podman service

systemctsl --user start podman.socket

@jwhonce
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jwhonce commented Mar 8, 2023

Hi @jwhonce , neither CONTAINER_HOST nor DOCKER_HOST are defined in my environment:

$ env | grep CONTAINER_HOST
$ env | grep DOCKER_HOST

Should they be? I installed podman via: sudo dnf install -y podman

Those environment variables are interchangeable and one or the other is required when using .from_env() to determine where the podman service is running.

@rhatdan
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rhatdan commented Mar 8, 2023

Should podman-py just look for them in the standard location if they are not running?

@josecastillolema
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@rhatdan the rootless podman service does not work either:

$ systemctl --user start podman.socket
$ python3 
Python 3.6.8 (default, Jan 19 2022, 23:28:49) 
[GCC 8.5.0 20210514 (Red Hat 8.5.0-7)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import podman
>>> client = podman.PodmanClient(base_url="http+unix:///var/run/podman/podman.sock")
>>> client
<podman.client.PodmanClient object at 0x7f6d6a7c1400>
>>> client.images.list()
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 43, in connect
    super().connect(netloc)
PermissionError: [Errno 13] Permission denied

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
podman.errors.exceptions.APIError: Unable to make connection to UDS '/var/run/podman/podman.sock'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 450, in send
    timeout=timeout
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/usr/lib/python3.6/site-packages/urllib3/util/retry.py", line 368, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/lib/python3.6/site-packages/urllib3/packages/six.py", line 692, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
urllib3.exceptions.ProtocolError: ('Connection aborted.', APIError("Unable to make connection to UDS '/var/run/podman/podman.sock'",))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 411, in _request
    **timeout_kw,
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 529, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 645, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 501, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', APIError("Unable to make connection to UDS '/var/run/podman/podman.sock'",))

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/podman/domain/images_manager.py", line 56, in list
    response = self.client.get("/images/json", params=params)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 243, in get
    **kwargs,
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 415, in _request
    raise APIError(uri.geturl(), explanation=f"{method.upper()} operation failed") from e
podman.errors.exceptions.APIError: http://%2Fvar%2Frun%2Fpodman%2Fpodman.sock/v4.3.0/libpod/images/json (GET operation failed)

@josecastillolema
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@jwhonce so I guess the question is, who is responsible for defining this variables and why are not defined in my environments?
Is it a user responsibility or should they be handled as part of podman installation?

@rhatdan
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rhatdan commented Mar 17, 2023

You should not specify the base_url
base_url="http+unix:///var/run/podman/podman.sock

This is the path for the rootful socket. look at the example below. python-podman does the right thing.

$ python
Python 3.11.2 (main, Feb  8 2023, 00:00:00) [GCC 13.0.1 20230208 (Red Hat 13.0.1-0)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import podman
>>> client = podman.PodmanClient()
>>> client.images.list()
[<Image: 'quay.io/libpod/testimage:20221018'>, <Image: 'registry.access.redhat.com/ubi9:latest'>, <Image: 'docker.io/library/golang:1.17'>]

@josecastillolema
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@rhatdan :

$ python3
Python 3.6.8 (default, Jan 19 2022, 23:28:49) 
[GCC 8.5.0 20210514 (Red Hat 8.5.0-7)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import podman
>>> client = podman.PodmanClient()
>>> client.images.list()
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 43, in connect
    super().connect(netloc)
FileNotFoundError: [Errno 2] No such file or directory

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
podman.errors.exceptions.APIError: Unable to make connection to UDS '/run/user/503/podman/podman.sock'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 450, in send
    timeout=timeout
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/usr/lib/python3.6/site-packages/urllib3/util/retry.py", line 368, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/lib/python3.6/site-packages/urllib3/packages/six.py", line 692, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib64/python3.6/http/client.py", line 1273, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1319, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1268, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.6/http/client.py", line 1044, in _send_output
    self.send(msg)
  File "/usr/lib64/python3.6/http/client.py", line 982, in send
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 88, in connect
    sock.connect()
  File "/usr/local/lib/python3.6/site-packages/podman/api/uds.py", line 45, in connect
    raise APIError(f"Unable to make connection to UDS '{netloc}'") from e
urllib3.exceptions.ProtocolError: ('Connection aborted.', APIError("Unable to make connection to UDS '/run/user/503/podman/podman.sock'",))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 411, in _request
    **timeout_kw,
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 529, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 645, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 501, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', APIError("Unable to make connection to UDS '/run/user/503/podman/podman.sock'",))

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/podman/domain/images_manager.py", line 56, in list
    response = self.client.get("/images/json", params=params)
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 243, in get
    **kwargs,
  File "/usr/local/lib/python3.6/site-packages/podman/api/client.py", line 415, in _request
    raise APIError(uri.geturl(), explanation=f"{method.upper()} operation failed") from e
podman.errors.exceptions.APIError: http://%2Frun%2Fuser%2F503%2Fpodman%2Fpodman.sock/v4.3.0/libpod/images/json (GET operation failed)

jwhonce added a commit to jwhonce/podman-py that referenced this issue Mar 20, 2023
@jwhonce
Improve exception when missing env var
aeb21a4 
When using from_env() and having not set one of the necessary env var.

```python
import sys
sys.path.insert(0, './podman')
import podman
podman.from_env()
```

causes:

```ValueError: CONTAINER_HOST or DOCKER_HOST must be set to URL of podman service.```

fixes containers#223

Signed-off-by: Jhon Honce <jhonce@redhat.com>
@jwhonce jwhonce mentioned this issue Mar 20, 2023
Merged
@rhatdan
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rhatdan commented Mar 21, 2023

Is your podman.service running? And listening on /run/user/503/podman/podman.sock?

If you do podman --remote version does it also blow up?

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Improve exception when missing env var jwhonce/podman-py
5 participants
@cjw296 @jwhonce @rhatdan @josecastillolema @bdherouville