Upgrade to 19.03 from 18 results in libnetwork-setkey hitting UNIX_PATH_MAX limit #39608
Description
Description
I just upgraded our test system from 18.09.3 to 19.03.0 and none of our daemons are working. I've traced the issue to the following commit:
We're hosting multiple daemons on a single host so the path length is slightly longer resulting in the following error due to hitting the UNIX_PATH_MAX limit (108 ours is 115):
failed to start daemon: Error initializing network controller: error obtaining controller instance: listen unix /cylostore/sdj/9598/var/run/docker/libnetwork/b2757cb82eadaaea94aab22529663e38c3bf799369f5b578fe8a5bb4bcefe0f0.sock: bind: invalid argument
I understand that this is a configuration issue and we'll probably need to shorten our exec-root, however I think it's important for people to understand this limitation, as there's not much wiggle room.
Steps to reproduce the issue:
- Start a daemon with an exec-root > 27 chars
Describe the results you received:
failed to start daemon: Error initializing network controller: error obtaining controller instance: listen unix /cylostore/sdj/9598/var/run/docker/libnetwork/b2757cb82eadaaea94aab22529663e38c3bf799369f5b578fe8a5bb4bcefe0f0.sock: bind: invalid argument
Describe the results you expected:
Docker to start normally
Output of docker version:
Client: Docker Engine - Community
Version: 19.03.0
API version: 1.40
Go version: go1.12.5
Git commit: aeac949
Built: Wed Jul 17 18:15:07 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.0
API version: 1.40 (minimum version 1.12)
Go version: go1.12.5
Git commit: aeac949
Built: Wed Jul 17 18:13:43 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.6
GitCommit: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc:
Version: 1.0.0-rc8
GitCommit: 425e105d5a03fabd737a126ad93d62a9eeede87f
docker-init:
Version: 0.18.0
GitCommit: fec3683
Output of docker info:
Client:
Debug Mode: false
Server:
Containers: 9
Running: 9
Paused: 0
Stopped: 0
Images: 8
Server Version: 19.03.0
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 ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
userns
Kernel Version: 5.0.3-050003-generic
Operating System: Ubuntu 18.04.2 LTS
OSType: linux
Architecture: x86_64
CPUs: 24
Total Memory: 125.7GiB
Name: m390.ata.ams-1.nl.cylo.io
ID: QE2H:72ZE:6R52:Z7NT:ACKR:NCVE:TLUZ:R6CE:XLIY:QU6V:MB5M:4F6Y
Docker Root Dir: /var/lib/docker/100000.100000
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No swap limit support
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled