Docker V2 Plugin Install Error

[gkoerk]

What you expected to happen?

The docker plugin would install successfully.

What happened?

# docker plugin install weaveworks/net-plugin:latest_release
Plugin "weaveworks/net-plugin:latest_release" is requesting the following privileges:
 - network: [host]
 - mount: [/proc/]
 - mount: [/var/run/docker.sock]
 - mount: [/var/lib/]
 - mount: [/etc/]
 - mount: [/lib/modules/]
 - capabilities: [CAP_SYS_ADMIN CAP_NET_ADMIN CAP_SYS_MODULE]
Do you grant the above permissions? [y/N] y
latest_release: Pulling from weaveworks/net-plugin
808b21b1a419: Download complete                                                                                                                                                                                                                                                                                                                                                            Digest: sha256:44b9652a96f5eadd10781d1d87041ac64138c561de12c65f78e0c7d59e82f6d1
Status: Downloaded newer image for weaveworks/net-plugin:latest_release
Error response from daemon: dial unix /run/docker/plugins/0f208375c934c309d12b455c3babe7c5e52952190bdb17f6403c894e4ca61e82/weave.sock: connect: no such file or directory

How to reproduce it?

docker plugin install weaveworks/net-plugin:latest_release

Anything else we need to know?

• Docker Info:

Containers: 46
 Running: 46
 Paused: 0
 Stopped: 0
Images: 45
Server Version: 17.09.1-ce
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: active
 NodeID: jgepzyc4z782izfzkz78yzouw
 Is Manager: true
 ClusterID: nfqwtrh9o84ux7dpp4n518w4z
 Managers: 1
 Nodes: 1
 Orchestration:
  Task History Retention Limit: 5
 Raft:
  Snapshot Interval: 10000
  Number of Old Snapshots to Retain: 0
  Heartbeat Tick: 1
  Election Tick: 3
 Dispatcher:
  Heartbeat Period: 5 seconds
 CA Configuration:
  Expiry Duration: 3 months
  Force Rotate: 0
 Autolock Managers: false
 Root Rotation In Progress: false
 Node Address: 192.168.1.100
 Manager Addresses:
  192.168.1.100:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 6c000fd07a23e5904618abdbb31f75c44865ef13 (expected: 06b9cb35161009dcb7123345749fef02f7cea8e0)
runc version: 3f2f8b84a77f73d38244dd690525642a72156c64
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.14.24-qnap
Operating System: QTS 4.4.1 (20190816)
OSType: linux
Architecture: x86_64
CPUs: 16
Total Memory: 62.77GiB
Name: GKNAS
ID: FOAM:2BRN:CWEC:GDK4:7RXW:7EU5:5XUG:OQ5K:T3OJ:HZKM:7KW5:3UAN
Docker Root Dir: /share/CACHEDEV1_DATA/Container/container-station-data/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 474
 Goroutines: 871
 System Time: 2019-10-02T15:51:03.450564218-05:00
 EventsListeners: 46
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

Versions:

$ weave version
weave script 2.5.2
weave 2.5.2

$ docker version
Client:
 Version:      17.09.1-ce
 API version:  1.32
 Go version:   go1.8.3
 Git commit:   e398b97
 Built:        Tue May 28 12:02:28 2019
 OS/Arch:      linux/amd64

Server:
 Version:      17.09.1-ce
 API version:  1.32 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   e398b97
 Built:        Tue May 28 12:02:28 2019
 OS/Arch:      linux/amd64
 Experimental: false

$ uname -a
Linux GKNAS 4.14.24-qnap #1 SMP Fri Aug 16 18:41:53 CST 2019 x86_64 GNU/Linux

$ kubectl version
-sh: kubectl: command not found

Logs:

$ docker logs weave
Error response from daemon: No such container: weave

$ journalctl -u docker.service --no-pager
-sh: journalctl: command not found

$ journalctl -u kubelet --no-pager
-sh: journalctl: command not found

$ kubectl get events
-sh: kubectl: command not found

Network:

N/A

[bboreham]

It appears that your Docker installation is not working the same way others' does.

The way Docker plugins work is to communicate over a "unix socket" in the filesystem.

Error response from daemon: dial unix /run/docker/plugins/0f208375c934c309d12b455c3babe7c5e52952190bdb17f6403c894e4ca61e82/weave.sock: connect: no such file or directory

This means the unix socket was not created as expected.

$ journalctl -u docker.service --no-pager
-sh: journalctl: command not found

Find out where your Docker logs are, there may be some clues in them.

[gkoerk]

I am thinking this is the way I want to try and get Weave installed is via docker plugin install.
You are right that the problem is the is a NAS and though it has docker and swarm support (via Container Station - it's a proprietary OS and they like to hide a LOT of things through symbolic links. Is there a good place you can point me with all the weave environment variables?

[bboreham]

The source code is the only place to find all the environment variables.
In particular WEAVE_CNI_PLUGIN_DIR which I set at #3707 (comment) is missing from the docs and from the set that are passed through the first weave command hence I had to find another route to set it.

[manelio]

Same problem here.

I'm trying to find any information, but it looks like this issue has been reported several times in last 3 years and there's no clear solution.

I'm just testing Weave, trying to create a network shared by two hosts with docker network create. But it's being frustrating.

[Alqio]

I was experiencing the same problem. Fixed by changing

docker plugin install weaveworks/net-plugin:latest

to

docker plugin install weaveworks/net-plugin:latest_release