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Support local unix socket in lxd-migrate - from Incus #13599

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merged 5 commits into from
Jun 13, 2024

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If tool lxd-migrate is capable of connection to a local LXD unix socket, first offer the user option to use the socket.

In addition, go client function for connecting to a LXD unix socket is expanded to check for snapped LXD unix socket.

stgraber and others added 2 commits June 13, 2024 10:20
Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
(cherry picked from commit fd5f83b0bf804c97e970898b91a5366168315742)
Signed-off-by: Din Music <din.music@canonical.com>
License: Apache-2.0
Signed-off-by: Din Music <din.music@canonical.com>
@MusicDin MusicDin marked this pull request as ready for review June 13, 2024 12:17
lxd-migrate/utils.go Outdated Show resolved Hide resolved
} else {
path = "/var/lib/lxd/unix.socket"
if !shared.PathIsWritable(shared.HostPath(path)) {
path = "/var/snap/lxd/common/lxd/unix.socket"
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Is this change required? How is the lxc command working inside the snap, does it set LXD_DIR env?

Are you adding this for lxd-migrate's benefit?

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I think we should re-arrange it so that if /var/snap/lxd/common/lxd/unix.socket is writable we use it, otherwise fallback to /var/lib/lxd/unix.socket

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@MusicDin MusicDin Jun 13, 2024

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How is the lxc command working inside the snap, does it set LXD_DIR env?

Yes.

https://github.com/canonical/lxd-pkg-snap/blob/latest-edge/snapcraft/commands/lxc#L32-L38

Is this change required? Are you adding this for lxd-migrate's benefit?

The lxd-migrate is not snapped, so it will not have LXD_DIR set. Therefore, we can avoid this change and make lxd-migrate check for the snapped LXD socket explicitly.

So, it will benefit lxd-migrate, but I wanted to take this opportunity to change this, as it will also benefit Terraform provider, and probably pylxd which are currently trying which socket exists as they are not snapped.

I think we should re-arrange it so that if /var/snap/lxd/common/lxd/unix.socket is writable we use it, otherwise fallback to /var/lib/lxd/unix.socket

Fixed.

Signed-off-by: Din Music <din.music@canonical.com>
MusicDin and others added 2 commits June 13, 2024 14:07
Signed-off-by: Din Music <din.music@canonical.com>
Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
(cherry picked from commit 09e4119da1ca24d2c08a0bd9597a7e6a16803a74)
Signed-off-by: Din Music <din.music@canonical.com>
License: Apache-2.0
@tomponline tomponline merged commit 32a6d73 into canonical:main Jun 13, 2024
29 checks passed
@MusicDin MusicDin deleted the cp/local-lxd-migrate branch June 13, 2024 21:46
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3 participants