UNIX socket path '/var/lib/nomad/alloc/9e1d5f9a-70f3-1354-077c-6947e262d845/$jobname/qemu-monitor.sock' Path must be less than 108 bytes

[iovcho]

Nomad version

Output from nomad version
Nomad v1.3.2 (bf60297)

Operating system and Environment details

Debian 10.12
Linux 4.19.0-18-amd64 #1 SMP Debian 4.19.208-1 (2021-09-29) x86_64 GNU/Linux

Issue

job "job-test" {
datacenters = ["DC"]
type = "service"
group "job-test" {
count = 1
task "job-test" {
driver = "qemu"
config {
image_path = "local/latest.qcow2"
args = ["-drive", "file=local/cloud-init.img"]
accelerator = "kvm"
graceful_shutdown = "true"
guest_agent = "true"
port_map {
ssh = 22
http = 80
https = 443
}
}
artifact {
source = "http://192.168.0.20:8580/cloud-init.img"
}
artifact {
source = "http://192.168.0.20:8580/latest.qcow2"
}
resources {
cores = 4
memory = 4096
disk = 20000
network {
port "ssh" {}
port "http" {}
port "https" {}
}
}
}
}
}

nomad alloc status $ALLOCID

ID = ddf54ff5-dffb-6524-c216-0141d3c03089
Eval ID = 334d31e2
Name = job-test[0]
Node ID = 09811883
Node Name = host5
Job ID = job-test
Job Version = 0
Client Status = failed
Client Description = Failed tasks
Desired Status = run
Desired Description =
Created = 6m58s ago
Modified = 5m30s ago
Deployment ID = 903c7f9f
Deployment Health = unhealthy

Task "job-test" is "dead"
Task Resources
CPU Memory Disk Addresses
0/9200 MHz 0 B/4.0 GiB 300 MiB ssh: 172.16.0.25:25007
http: 172.16.0.25:30685
https: 172.16.0.25:28481

Task Events:
Started At = 2022-08-01T14:11:55Z
Finished At = 2022-08-01T14:11:56Z
Total Restarts = 2
Last Restart = 2022-08-01T17:11:40+03:00

Recent Events:
Time Type Description
2022-08-01T17:11:56+03:00 Alloc Unhealthy Unhealthy because of failed task
2022-08-01T17:11:56+03:00 Not Restarting Exceeded allowed attempts 2 in interval 30m0s and mode is "fail"
2022-08-01T17:11:56+03:00 Terminated Exit Code: 1
2022-08-01T17:11:55+03:00 Started Task started by client
2022-08-01T17:11:40+03:00 Restarting Task restarting in 15.235353881s
2022-08-01T17:11:40+03:00 Terminated Exit Code: 1
2022-08-01T17:11:40+03:00 Started Task started by client
2022-08-01T17:11:40+03:00 Restarting Task restarting in 16.969039224s
2022-08-01T17:11:40+03:00 Terminated Exit Code: 1
2022-08-01T17:11:40+03:00 Started Task started by client

nomad alloc logs -stderr ddf54ff5

qemu-system-x86_64: -monitor unix:/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3c03089/xxx/qemu-monitor.sock,server,nowait: UNIX socket path '/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3cg Path must be less than 108 bytes
qemu-system-x86_64: -monitor unix:/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3c03089/xxx/qemu-monitor.sock,server,nowait: UNIX socket path '/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3cg Path must be less than 108 bytes
qemu-system-x86_64: -monitor unix:/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3c03089/xxx/qemu-monitor.sock,server,nowait: UNIX socket path '/var/lib/nomad/alloc/ddf54ff5-dffb-6524-c216-0141d3cg Path must be less than 108 bytes

[lgfa29]

Hi @iovcho 👋

The 108 bytes limit is set by Linux, so unfortunately there is not much we can do about it. The socket is placed inside the task directory, so maybe you can try a shorter task name?

Another thing we noticed is that the task name in your sample job file is job-test, which should leave plenty of room for the full socket path. Was this the task name you were using when you receive this error message?

To help a bit with problems like this I reduced the socket file name in In #13971 to give some characters back to other components of the path.

[lgfa29]

Hello from the future 👋

I cleaning up some stale issue and we haven't had any updates on this one for a while, so I'm going to close it for now. But let me know if this is still a problem and we can reopen it.

Thank you!