mkdir() "/var/run/openresty/nginx-client-body" failed

[carlheymann]

To reproduce:

$ docker pull openresty/openresty:1.15.8.2-2-centos
$ docker run --rm openresty/openresty:1.15.8.2-2-centos
2019/10/04 08:24:02 [emerg] 1#1: mkdir() "/var/run/openresty/nginx-client-body" failed (2: No such file or directory)
nginx: [emerg] mkdir() "/var/run/openresty/nginx-client-body" failed (2: No such file or directory)

Is this a regression? I can work around it by adding my own dockerfile and creating the directory in there. This issue is not present in openresty/openresty:1.15.8.1-4-centos.

[neomantra]

Yes, this is a regression -- thanks for reporting -- bad release management on my part.

I am fixing this now with a VOLUME stanza and doing a new release. Should be through Travis later today.

[karllhughes]

I pulled down the latest centos (openresty/openresty:centos) and got this error today. Rolling back to openresty/openresty:1.15.8.1-4-centos fixed it.

Is it possible this regression is back?

[neomantra]

Hmmmm... I'm trying this and it is OK?

docker pull openresty/openresty:1.17.8.2-0-centos
docker run --rm openresty/openresty:1.17.8.2-0-centos

[asviel]

@neomantra
Issue still presented when I use ctr (and containerd) to run container.

# ctr run --net-host --rm docker.io/openresty/openresty:jammy nginx
2024/10/10 07:42:40 [emerg] 1#1: mkdir() "/var/run/openresty/nginx-client-body" failed (2: No such file or directory)
nginx: [emerg] mkdir() "/var/run/openresty/nginx-client-body" failed (2: No such file or directory)

When you run this way, the /run directory is empty. I haven't figured out why yet, I think containerd is wiping it out.

# ctr run --net-host --rm docker.io/openresty/openresty:jammy nginx ls -lA /var/run
lrwxrwxrwx 1 root root 4 Jun 27 14:20 /var/run -> /run
# ctr run --net-host --rm docker.io/openresty/openresty:jammy nginx ls -lA /var/run/
total 0
# ctr run --net-host --rm docker.io/openresty/openresty:jammy nginx ls -lA /run/
total 0

UPD:
With nerdctl /run not empty, so it's not about containerd, it's about ctr:

# nerdctl run --net host -it --rm openresty/openresty:jammy bash -c 'ls -lA /var/run'
lrwxrwxrwx 1 root root 4 Jun 27 14:20 /var/run -> /run
# nerdctl run --net host -it --rm openresty/openresty:jammy bash -c 'ls -lA /var/run/'
total 16
drwxrwxrwt 2 root root 4096 Jun 27 14:20 lock
drwxr-xr-x 2 root root 4096 Jun 27 14:20 mount
drwxr-xr-x 2 root root 4096 Jul 22 13:28 openresty
drwxr-xr-x 2 root root 4096 Jun 27 14:24 systemd
# nerdctl run --net host -it --rm openresty/openresty:jammy bash -c 'ls -lA /run/'
total 16
drwxrwxrwt 2 root root 4096 Jun 27 14:20 lock
drwxr-xr-x 2 root root 4096 Jun 27 14:20 mount
drwxr-xr-x 2 root root 4096 Jul 22 13:28 openresty
drwxr-xr-x 2 root root 4096 Jun 27 14:24 systemd

UPD:
Okay, ctr mounts /run as tmpfs by default:

# ctr c create --net-host --rm docker.io/openresty/openresty:jammy nginx
# ctr c info nginx
{
    "ID": "nginx",
    "Labels": {
        "io.containerd.image.config.stop-signal": "SIGQUIT",
        "maintainer": "Evan Wies \u003cevan@neomantra.net\u003e",
        ...
    },
    "Image": "docker.io/openresty/openresty:jammy",
    "Runtime": {
        "Name": "io.containerd.runc.v2",
        "Options": {
            "type_url": "containerd.runc.v1.Options"
        }
    },
    "Spec": {
        ...
        "mounts": [
            ...
            {
                "destination": "/run",
                "type": "tmpfs",
                "source": "tmpfs",
                "options": [
                    "nosuid",
                    "strictatime",
                    "mode=755",
                    "size=65536k"
                ]
            },
            ...
        ],
    }
}

UPD
containerd/containerd#1340