More details should be provided than v2/snaps/refresh: context canceled

[Nobuto Murata]

I started to see the following error frequently in Canonical's CI infrastructure. However, it's hard to tell what's wrong from the output. It would be nice if more use facing message is surfaced. e.g. if it's about rate limiting, getting something like Too Many Requests message would be helpful.

$ sudo snap install openstack --channel 2024.1/edge
error: cannot install "openstack": Post
       "https://api.snapcraft.io/v2/snaps/refresh": context canceled
Command exited with non-zero status 1

[Ernest Lotter (ernestl)]

Snapd fix: https://bugs.launchpad.net/snapstore-server/+bug/2104066
This fix will be part of snapd 2.69.1 , the release process started already on 21 April, this fix will be cherry picked.

[Peter Jose De Sousa (pjds)]

Seeing this now with a proxy based sunbeam deployment. If the connection is dropped during the juju-db snap this will result in the juju controller failing to bootstrap.

Fetching Juju agent version 3.6.5 for amd64
Attempt 1 to download agent binaries from 'https://streams.canonical.com/juju/tools/agent/3.6.5/juju-3.6.5-linux-amd64.tgz'...\n
Agent binaries downloaded successfully.
14cbb3af27fc41910e0d0d04454a37a4c6526b6ff86016138dba1cc79c6e3b67 /var/lib/juju/tools/3.6.5-ubuntu-amd64/tools.tar.gz
Installing Juju machine agent
2025-05-20 21:13:10 INFO juju.cmd supercommand.go:56 running jujud [3.6.5 33b026f4ab2a4fe371764b9c41993d3e1e90ddef gc go1.24.1]
2025-05-20 21:13:11 INFO juju.agent identity.go:22 writing system identity file
2025-05-20 21:13:11 INFO juju.mongo mongo.go:242 Ensuring mongo server is running; data directory /var/snap/juju-db/common; port 37017
2025-05-20 21:13:11 INFO juju.packaging manager.go:81 installing "juju-db" via "snap"
2025-05-20 21:13:11 INFO juju.packaging.manager run.go:88 Running: snap install --channel 4.4/stable juju-db
2025-05-20 21:13:11 ERROR juju.packaging.manager run.go:145 packaging command failed: exit status 1; cmd: "snap install --channel 4.4/stable juju-db"; output: error: cannot install "juju-db": Post
       "https://api.snapcraft.io/v2/snaps/refresh": context canceled

ERROR failed to start mongo: cannot install mongod: installing package "juju-db" via "snap": packaging command failed: exit status 1
ERROR failed to bootstrap model: subprocess encountered error code 1

Error: Command '['/snap/openstack/727/juju/bin/juju', 'bootstrap', '--bootstrap-constraints', 'tags=juju-controller', '--bootstrap-base', 'ubuntu@24.04', '--controller-charm-path', '/home/ubuntu/snap/openstack/common/downloads/juju-controller.charm', '--to', 'system-id=4k'mycloud-controller', '--config', '/tmp/tmpol5u7dz1']' returned non-zero exit status 1.

[Nobuto Murata (nobuto)]

Cross-linking to the PR: https://github.com/canonical/snapd/pull/15291