Hi - @stgraber/@Wimpress
I have installed travis-worker and lxd snaps on power arch(ppc64le) and below are my env details.
ubuntu@travisci-lxd-worker2:~$ snap --version
snap 2.39.3
snapd 2.39.3
series 16
ubuntu 18.04
kernel 4.15.0-45-generic
ubuntu@travisci-lxd-worker2:~$ lxd --version
3.0.3
ubuntu@travisci-lxd-worker2:~$ travis-worker --version
travis-worker v=v6.2.0-68-gc937f26 rev=c937f263ff0f0c4260577d4792585958084c63d3 d=2019-06-27T16:16:04+0000 go=go1.12.6
ubuntu@travisci-lxd-worker2:~$ lxc --version
3.0.3
ubuntu@travisci-lxd-worker2:~$ cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.2 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.2 LTS"
VERSION_ID="18.04"
ubuntu@travisci-lxd-worker2:~$ arch
ppc64le
Getting issue in starting the service
ubuntu@travisci-lxd-worker2:~$ journalctl -xu snap.travis-worker.daemon.service | tail -f
Jul 08 06:19:24 travisci-lxd-worker2 travis-worker.daemon[14300]: time="2019-07-08T06:19:24Z" level=error msg="couldn't create backend provider" err="Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied" pid=14300 self=cli
ubuntu@travisci-lxd-worker2:~$ id
uid=1000(ubuntu) gid=108(lxd) groups=108(lxd),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),114(sambashare),1000(ubuntu)
ubuntu@travisci-lxd-worker2:~$ ls -l /var/snap/lxd/common/lxd/unix.socket
srw-rw---- 1 ubuntu lxd 0 Jul 8 04:34 /var/snap/lxd/common/lxd/unix.socket
Checking lxd service
ubuntu@travisci-lxd-worker2:~$ systemctl status lxd
â lxd.service - LXD - main daemon
Loaded: loaded (/lib/systemd/system/lxd.service; indirect; vendor preset: enabled)
Active: active (running) since Mon 2019-07-08 06:20:38 UTC; 1h 31min ago
Docs: man:lxd(1)
Process: 14426 ExecStartPost=/usr/bin/lxd waitready --timeout=600 (code=exited, status=0/SUCCESS)
Process: 14409 ExecStartPre=/usr/lib/powerpc64le-linux-gnu/lxc/lxc-apparmor-load (code=exited, status=0/SUCCESS)
Main PID: 14425 (lxd)
Tasks: 57
CGroup: /system.slice/lxd.service
ââ14425 /usr/lib/lxd/lxd --group lxd --logfile=/var/log/lxd/lxd.log
Jul 08 06:20:37 travisci-lxd-worker2 systemd[1]: Starting LXD - main daemon...
Jul 08 06:20:37 travisci-lxd-worker2 lxd[14425]: t=2019-07-08T06:20:37+0000 lvl=warn msg="CGroup memory swap accounting is disabled, swap limits will be ignored."
Jul 08 06:20:38 travisci-lxd-worker2 systemd[1]: Started LXD - main daemon.
and lxd.socket service
ubuntu@travisci-lxd-worker2:~$ systemctl status lxd.socket
â lxd.socket - LXD - unix socket
Loaded: loaded (/lib/systemd/system/lxd.socket; enabled; vendor preset: enabled)
Active: active (running) since Mon 2019-07-08 06:20:31 UTC; 1h 32min ago
Docs: man:lxd(1)
Listen: /var/lib/lxd/unix.socket (Stream)
Tasks: 0 (limit: 4915)
CGroup: /system.slice/lxd.socket
Jul 08 06:20:31 travisci-lxd-worker2 systemd[1]: Starting LXD - unix socket.
Jul 08 06:20:31 travisci-lxd-worker2 systemd[1]: Listening on LXD - unix socket.
ubuntu@travisci-lxd-worker2:~$ ls -l /var/lib/lxd/unix.socket
srw-rw---- 1 ubuntu lxd 0 Jul 8 06:20 /var/lib/lxd/unix.socket
I have done everything possible as mentioned here - https://github.com/lxc/lxd/issues/1635 however didn’t help resolve the error
Please let me of any pointers to resolve this issue ( : dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied)
In order to have the travis-worker talk to LXD you must connect the lxd interface for it.
snap connect travis-worker:lxd lxd:lxd should do
Note that for such things, you can always look at snap interfaces for a list of things that can be connected but currently aren’t (look at the bottom).
@stgraber - Firstly thanks for formatting my comments above …
I did try out but it didn’t help , still getting same error
ubuntu@travisci-lxd-worker2:~$ sudo snap connect travis-worker:lxd lxd:lxd
ubuntu@travisci-lxd-worker2:~$ snap interfaces
Slot Plug
:account-control -
:accounts-service -
:adb-support -
:alsa -
:autopilot-introspection -
:avahi-control -
:avahi-observe -
:block-devices -
:bluetooth-control -
:bluez -
:broadcom-asic-control -
:browser-support -
:calendar-service -
:camera -
:can-bus -
:cifs-mount -
:classic-support -
:contacts-service -
:core-support -
:cpu-control -
:cups-control -
:daemon-notify -
:dcdbas-control -
:desktop -
:desktop-legacy -
:device-buttons -
:display-control -
:docker-support -
:dvb -
:firewall-control -
:framebuffer -
:fuse-support -
:gpg-keys -
:gpg-public-keys -
:gpio-memory-control -
:greengrass-support -
:gsettings -
:hardware-observe -
:hardware-random-control -
:hardware-random-observe -
:home -
:hostname-control -
:intel-mei -
:io-ports-control -
:joystick -
:juju-client-observe -
:kernel-module-control -
:kernel-module-observe -
:kubernetes-support -
:kvm -
:libvirt -
:locale-control -
:log-observe -
:lxd-support lxd
:modem-manager -
:mount-observe -
:multipass-support -
:netlink-audit -
:netlink-connector -
:network lxd,travis-worker
:network-bind lxd
:network-control -
:network-manager -
:network-manager-observe -
:network-observe -
:network-setup-control -
:network-setup-observe -
:ofono -
:opengl -
:openvswitch -
:openvswitch-support -
:optical-drive -
:password-manager-service -
:personal-files -
:physical-memory-control -
:physical-memory-observe -
:ppp -
:process-control -
:pulseaudio -
:raw-usb -
:removable-media -
:screen-inhibit-control -
:screencast-legacy -
:shutdown -
:snapd-control -
:ssh-keys -
:ssh-public-keys -
:system-files -
:system-observe lxd
:system-trace -
:time-control -
:timeserver-control -
:timezone-control -
:tpm -
:u2f-devices -
:udisks2 -
:uhid -
:unity7 -
:upower-observe -
:wayland -
:x11 -
lxd:lxd travis-worker
'snap interfaces' is deprecated; use 'snap connections'.
Even snap connections reflecting …
ubuntu@travisci-lxd-worker2:~$ snap connections`
Interface Plug Slot Notes`
lxd travis-worker:lxd lxd:lxd manual`
lxd-support lxd:lxd-support :lxd-support -`
network lxd:network :network -`
network travis-worker:network :network -`
network-bind lxd:network-bind :network-bind -`
system-observe lxd:system-observe :system-observe -`
However it didnt help , still getting “permission denied” error
ubuntu@travisci-lxd-worker2:/etc/systemd/system$ journalctl -xu snap.travis-worker.daemon.service | tail -f
Jul 08 13:58:45 travisci-lxd-worker2 travis-worker.daemon[27054]: time="2019-07-08T13:58:45Z" level=error msg="couldn't create backend provider" err="Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied" pid=27054 self=cli
Jul 08 14:13:24 travisci-lxd-worker2 systemd[1]: Started Service for snap application travis-worker.daemon.
-- Subject: Unit snap.travis-worker.daemon.service has finished start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit snap.travis-worker.daemon.service has finished starting up.
--
-- The start-up result is RESULT.
Jul 08 14:13:24 travisci-lxd-worker2 travis-worker.daemon[27270]: `time="2019-07-08T14:13:24Z" level=error msg="couldn't create backend provider" err="Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied" pid=27270 self=cli`
Any further pointers…if any ? Am i missing something here…
any pointers to share @stgraber please ?
Did you restart the travis-worker snap following the connection?
@stgraber - did restart travis-worker snap too …however not much to avail.
currently running “lxd” services on my vm
root@travisci-lxd-worker2:/etc/systemd/system# systemctl status lxd.service
â lxd.service - LXD - main daemon
Loaded: loaded (/lib/systemd/system/lxd.service; indirect; vendor preset: enabled)
Active: active (running) since Wed 2019-07-10 13:10:28 UTC; 22h ago
Docs: man:lxd(1)
Main PID: 32686 (lxd)
Tasks: 66
CGroup: /system.slice/lxd.service
ââ 488 dnsmasq --strict-order --bind-interfaces --pid-file=/var/lib/lxd/networks/lxdbr0/dnsmasq.pid --except-interface=lo --interface=lxdbr0 --quiet-dhcp --quiet-dhc
ââ32686 /usr/lib/lxd/lxd --group lxd --logfile=/var/log/lxd/lxd.log
Jul 11 11:35:58 travisci-lxd-worker2 dnsmasq[488]: using nameserver 127.0.0.53#53
Jul 11 11:40:25 travisci-lxd-worker2 dnsmasq[488]: reading /etc/resolv.conf
Jul 11 11:40:25 travisci-lxd-worker2 dnsmasq[488]: using local addresses only for domain lxd
Jul 11 11:40:25 travisci-lxd-worker2 dnsmasq[488]: using nameserver 127.0.0.53#53
Jul 11 11:44:50 travisci-lxd-worker2 dnsmasq[488]: reading /etc/resolv.conf
Jul 11 11:44:50 travisci-lxd-worker2 dnsmasq[488]: using local addresses only for domain lxd
Jul 11 11:44:50 travisci-lxd-worker2 dnsmasq[488]: using nameserver 127.0.0.53#53
Jul 11 11:49:22 travisci-lxd-worker2 dnsmasq[488]: reading /etc/resolv.conf
Jul 11 11:49:22 travisci-lxd-worker2 dnsmasq[488]: using local addresses only for domain lxd
Jul 11 11:49:22 travisci-lxd-worker2 dnsmasq[488]: using nameserver 127.0.0.53#53
root@travisci-lxd-worker2:/etc/systemd/system# systemctl status lxd.socket
â lxd.socket - LXD - unix socket
Loaded: loaded (/lib/systemd/system/lxd.socket; enabled; vendor preset: enabled)
Active: active (running) since Wed 2019-07-10 13:10:22 UTC; 22h ago
Docs: man:lxd(1)
Listen: /var/lib/lxd/unix.socket (Stream)
Tasks: 0 (limit: 4915)
CGroup: /system.slice/lxd.socket
Jul 10 13:10:22 travisci-lxd-worker2 systemd[1]: Starting LXD - unix socket.
Jul 10 13:10:22 travisci-lxd-worker2 systemd[1]: Listening on LXD - unix socket.
root@travisci-lxd-worker2:/etc/systemd/system#
snaps installed on my vm …
root@travisci-lxd-worker2:/etc/systemd/system# snap list
Name Version Rev Tracking Publisher Notes
core 16-2.39.3 7273 stable canonical* core
core18 20190704 1057 stable canonical* base
lxd git-0ac28b2 11162 edge canonical* -
travis-worker v6.2.0+git68.c937f26 43 edge travis-ci* -
Snaps services running
root@travisci-lxd-worker2:/etc/systemd/system# snap services
Service Startup Current Notes
lxd.activate enabled inactive -
lxd.daemon enabled inactive socket-activated
travis-worker.daemon enabled inactive -
snaps started
root@travisci-lxd-worker2:/etc/systemd/system# snap start travis-worker.daemon
Started.
root@travisci-lxd-worker2:/etc/systemd/system# snap start lxd.daemon
Started.
root@travisci-lxd-worker2:/etc/systemd/system# snap start lxd.activate
Started.
However travis-worker service is still unable to start as seen below
root@travisci-lxd-worker2:/etc/systemd/system# journalctl -xu snap.travis-worker.daemon.service | tail -f
Jul 11 06:47:22 travisci-lxd-worker2 travis-worker.daemon[2502]: time="2019-07-11T06:47:22Z" level=error msg="couldn't create backend provider" err="Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied" pid=2502 self=cli
Jul 11 11:56:34 travisci-lxd-worker2 systemd[1]: Started Service for snap application travis-worker.daemon.
-- Subject: Unit snap.travis-worker.daemon.service has finished start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit snap.travis-worker.daemon.service has finished starting up.
--
-- The start-up result is RESULT.
Jul 11 11:56:35 travisci-lxd-worker2 travis-worker.daemon[3502]: time="2019-07-11T11:56:35Z" level=error msg="couldn't create backend provider" err="Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied" pid=3502 self=cli
I expected by installing “travis-worker” using snap , i would have got a running service , however getting this error- level=error msg=“couldn’t create backend provider” err=“Get http://unix.socket/1.0: dial unix /var/snap/lxd/common/lxd/unix.socket: connect: permission denied” pid=3502 self=cli
@stgraber- Any pointers to resolve above would be appreciated 
Works perfectly fine here.
root@c1:~# snap install lxd --edge
2019-07-11T13:03:08Z INFO Waiting for restart...
lxd (edge) git-0ac28b2 from Canonicalâś“ installed
root@c1:~# lxd.migrate -yes
=> Connecting to source server
=> Connecting to destination server
=> Running sanity checks
The source server is empty, no migration needed.
The migration is now complete and your containers should be back online.
All done. You may need to close your current shell and open a new one to have the "lxc" command work.
To migrate your existing client configuration, move ~/.config/lxc to ~/snap/lxd/current/.config/lxc
root@c1:~# lxd init
Would you like to use LXD clustering? (yes/no) [default=no]:
Do you want to configure a new storage pool? (yes/no) [default=yes]:
Name of the new storage pool [default=default]:
Would you like to connect to a MAAS server? (yes/no) [default=no]:
Would you like to create a new local network bridge? (yes/no) [default=yes]:
What should the new bridge be called? [default=lxdbr0]:
What IPv4 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]:
What IPv6 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]:
Would you like LXD to be available over the network? (yes/no) [default=no]:
Would you like stale cached images to be updated automatically? (yes/no) [default=yes]
Would you like a YAML "lxd init" preseed to be printed? (yes/no) [default=no]:
root@c1:~# snap install travis-worker --edge
travis-worker (edge) v6.2.0+git68.c937f26 from Travis CIâś“ installed
root@c1:~# snap connect travis-worker:lxd lxd:lxd
root@c1:~# vim /var/snap/travis-worker/common/worker.env
root@c1:~# snap restart travis-worker
Restarted.
root@c1:~# journalctl -u snap.travis-worker.daemon.service -f
-- Logs begin at Thu 2019-07-11 13:02:41 UTC. --
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="setting up heartbeat" pid=13180 self=cli
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting signal handler loop" pid=13180 self=cli
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=0bd678ed-2f4a-4905-a9dd-a07794b13418@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=84d729b5-4ac7-4e4e-aea9-2ebf21575b55@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=d01db90f-79d5-480c-aa08-c635a9ce832c@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=bac42bfe-9cc7-4858-a8d6-be3ff5051d48@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=98ecbf95-8ecb-43da-822c-bcca2e02b55b@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=dd5ca026-fbf2-4bd5-a293-1cc809f11db0@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=b36cf041-9801-4e10-9d47-621e71550f60@13180.c1 self=processor
Jul 11 13:23:09 c1 travis-worker.daemon[13180]: time="2019-07-11T13:23:09Z" level=info msg="starting processor" pid=13180 processor=3d6971a2-43fc-4f91-838d-dd7dd53cd4c5@13180.c1 self=processor
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hey @stgraber - strangely above sequence of installations steps worked for me …Closing this ticket.
Hey @stgraber, is there any way through which I can connect a travis-worker built from source to lxd snap?
Sure, make sure to set LXD_DIR in the environment to be /var/snap/lxd/common/lxd/
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