livepatch-server does not support proxy or proxy env variables

[Bartosz Woronicz]

Livepatch-server (Livepatch on-prem) does not support proxy

The current version is contained as binary in the resources/livepatchd in the charm
https://jaas.ai/u/livepatch-charmers/canonical-livepatch-server/29

Charm also does not support proxy, but it is quite easy fix
if your model-config contains settings like:
- juju-http-proxy
- juju-https-proxy
- juju-no-proxy

you may use attached patch to set the proper env on running charm
plus contains modification to the systemd service file with the envs
derived from the model-config settings

Here's excerpt from log when cannot connect, triggered by the livepatch-admin command
$ livepatch-admin sync trigger --wait

Dec 09 22:14:02 juju-2d3830-0-lxd-0 systemd[1]: Started Livepatch server.
Dec 09 22:16:57 juju-2d3830-0-lxd-0 livepatchd[242770]: {"level":"warn","ts":"2021-12-09T22:16:57.047Z","msg":"Starting patch refresh from pa
tchstore.","method":"POST","path":"/v1/admin/sync/reports","trace-id":"5b5b6ab0-a434-4863-944a-4ea75a1e9f36","admin-identity":"admin"}
Dec 09 22:17:27 juju-2d3830-0-lxd-0 livepatchd[242770]: {"level":"error","ts":"2021-12-09T22:17:27.058Z","msg":"failed to request patch snaps
hot","job-id":"a7efdb5c212747659e32f7197bd2c4da","ingress-tier":"edge","error":{"msg":"Post \"https://livepatch.canonical.com/v1/patches/snap
shot\": dial tcp 162.213.33.50:443: i/o timeout","trace":[{"loc":"/home/ubuntu/src/vendor/gopkg.in/httprequest.v1/client.go:147"},{"msg":"Pos
t \"https://livepatch.canonical.com/v1/patches/snapshot\": dial tcp 162.213.33.50:443: i/o timeout"}]}}
Dec 09 22:17:27 juju-2d3830-0-lxd-0 livepatchd[242770]: {"level":"error","ts":"2021-12-09T22:17:27.060Z","msg":"job returned an error","job-i
d":"a7efdb5c212747659e32f7197bd2c4da","error":{"msg":"Post \"https://livepatch.canonical.com/v1/patches/snapshot\": dial tcp 162.213.33.50:44
3: i/o timeout","trace":[{"loc":"/home/ubuntu/src/internal/v1/snapshot_download.go:65"},{"loc":"/home/ubuntu/src/internal/sync/sync.go:131"},
{"loc":"/home/ubuntu/src/internal/sync/sync.go:177"},{"loc":"/home/ubuntu/src/internal/sync/sync.go:237"},{"loc":"/home/ubuntu/src/vendor/gop
kg.in/httprequest.v1/client.go:147"},{"msg":"Post \"https://livepatch.canonical.com/v1/patches/snapshot\": dial tcp 162.213.33.50:443: i/o ti
meout"}]}}

[Bartosz Woronicz (mastier1)]

This will add EnvironmentFile to the systemd service with proxy env variables

[Bartosz Woronicz (mastier1)]

Charm still does not support proxy settings in vision #30
They are declared but not used

mastier@graf:/tmp/canonical-livepatch-server$ grep -iHR http_proxy .
./lib/charms/layer/livepatchserver/config.py: 'http_proxy',
./lib/charms/layer/livepatchserver/config.py: 'http_proxy',
./lib/charms/layer/livepatchserver/config.py: os.environ.get('JUJU_CHARM_HTTP_PROXY',
./lib/charms/layer/livepatchserver/resource.py:os.environ['http_proxy'] = os.environ.get('JUJU_CHARM_HTTP_PROXY', '')
./config.yaml: "http_proxy":

[Calvin Hartwell (calvinh)]

@Domas do you have a proposed fix for this we can test? Did you fix this over Christmas?

[Domas Monkus (tasdomas)]

@calvinh: a fix for this was released last week, there was a bug in the initial implementation