docker-compose running nginx-proxy and mailu as mailserver error - email

Question

i hope someone can help me here.
I am creating a linux Setup for my server. I need vhosts and only want to use docker-compose to have better track of security and setup and to easily restart and add new container.
For vhosting and ssl i use nginx-proxy (https://github.com/nginx-proxy/nginx-proxy). It works like a charm out of the box. Current docker-compose.yml:
services:
proxy:
image: nginxproxy/nginx-proxy:alpine
ports:
- "80:80"
- "443:443"
volumes:
- certs:/etc/nginx/certs
- vhost:/etc/nginx/vhost.d
- html:/usr/share/nginx/html
- /var/run/docker.sock:/tmp/docker.sock:ro
container_name: proxy
restart: always
ssl:
image: nginxproxy/acme-companion
environment:
- "DEFAULT_EMAIL=<MYEMAIL>"
volumes_from:
- proxy:rw
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
- acme:/etc/acme.sh
container_name: ssl-management
restart: always
networks:
default:
name: proxy-net
volumes:
certs:
external: false
vhost:
external: false
html:
external: false
acme:
external: false
I got all services running.
Currently im trying to start a mail server on the same server and ip. As mentioned i want to start (if possible) everything with docker so i got in touch with mailu (https://github.com/Mailu/Mailu) and as an alternative with mailcow (https://mailcow.email/)
I used the default setup for mailu from https://setup.mailu.io/1_7/ and configured everything as mentioned.
docker-compose.yml for mailu
version: '2.2'
services:
# External dependencies
redis:
image: redis:alpine
restart: always
volumes:
- "/home/vhost/mailserver/mailu/redis:/data"
# Core services
front:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
logging:
driver: json-file
ports:
- 25
- 465
- 587
- 110
- 995
- 143
- 993
volumes:
- "/home/vhost/mailserver/mailu/overrides/nginx:/overrides"
expose:
- 80
- 443
environment:
- VIRTUAL_HOST=mail.<MYDOMAIN>.com
- LETSENCRYPT_HOST=mail.<MYDOMAIN>.com
networks:
- proxy-net
admin:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
volumes:
- "/home/vhost/mailserver/mailu/data:/data"
- "/home/vhost/mailserver/mailu/dkim:/dkim"
depends_on:
- redis
imap:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
volumes:
- "/home/vhost/mailserver/mailu/mail:/mail"
- "/home/vhost/mailserver/mailu/overrides:/overrides"
depends_on:
- front
smtp:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
volumes:
- "/home/vhost/mailserver/mailu/overrides:/overrides"
depends_on:
- front
antispam:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
volumes:
- "/home/vhost/mailserver/mailu/filter:/var/lib/rspamd"
- "/home/vhost/mailserver/mailu/dkim:/dkim"
- "/home/vhost/mailserver/mailu/overrides/rspamd:/etc/rspamd/override.d"
depends_on:
- front
# Optional services
# Webmail
webmail:
image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}roundcube:${MAILU_VERSION:-1.7}
restart: always
env_file: mailu.env
volumes:
- "/home/vhost/mailserver/mailu/webmail:/data"
depends_on:
- imap
networks:
default:
driver: bridge
name: mail-net
proxy-net:
Now the Problem.
If i start first nginx-proxy and second mailu (or mailcow, same result, with or without nginx-proxy VIRTUALHOST settings and Port change) I get error:
Creating mailu_redis_1 ... done
Creating mailu_front_1 ... done
Creating mailu_admin_1 ...
Creating mailu_smtp_1 ... error
Creating mailu_antispam_1 ...
Creating mailu_imap_1 ...
Creating mailu_imap_1 ... error
ERROR: for mailu_imap_1 Cannot start service imap: runtime: failed to create new OS thread (have 6 already; errno=11)
runtime: may need to increase max user processes (ulimit -u)
fatal error: newosproc
goroutine 20 [running]:
runtime.throw(0x98a876, 0x9)
/usr/local/go/src/runtime/panic.go:774 +0x72 fp=0xc00003d5f0 sp=0xc00003d5c0 pc=0x42dd12
runtime.newosproc(0xc00008d880)
/usr/local/go/src/runtime/os_linux.go:153 +0x1ba fp=0xc00003d650 sp=0xc00003d5f0 pc=0x42b5da
runtime.newm1(0xc00008d880)
/usr/local/go/src/runtime/proc.go:1853 +0xdc fp=0xc00003d690 sp=0xc00003d650 pc=0x4335dc
runtime.newm(0x9a7f78, 0x0)
/usr/local/go/src/runtime/proc.go:1832 +0x8f fp=0xc00003d6c0 sp=0xc00003d690 pc=0x43344f
runtime.startTemplateThread()
/usr/local/go/src/runtime/proc.go:1873 +0xa9 fp=0xc00003d6e8 sp=0xc00003d6c0 pc=0x4336c9
runtime.LockOSThread()
/usr/local/go/src/runtime/proc.go:3543 +0x6b fp=0xc00003d708 sp=0xc00003d6e8 pc=0x437f2b
runtime.ensureSigM.func1()
/usr/local/go/src/runtime/signal_unix.go:535 +0x34 fp=0xc00003d7e0 sp=0xc00003d708 pc=0x4584a4
runtime.goexit()
/usr/local/go/src/runtime/asm_amd64.s:1357 +0x1 fp=0xc00003d7e8 sp=0xc00003d7e0 pc=0x45ae51
created by runtime.ensureSigM
/usr/local/go/src/runtime/signal_unix.go:532 +0xd5
goroutine 1 [chan send]:
os/signal.signal_enable(0x8b7cf98f0000000f)
/usr/local/go/src/runtime/sigqueue.go:219 +0x6c
os/signal.enableSignal(...)
/usr/local/go/src/os/signal/signal_unix.go:50
os/signal.Notify.func1(0xf)
/usr/local/go/src/os/signal/signal.go:135 +0x8e
os/signal.Notify(0xc0000a05a0, 0xc0000a0600, 0x4, 0x6)
/usr/local/go/src/os/signal/signal.go:147 +0x182
github.com/containerd/containerd/runtime/v2/shim.setupSignals(0x0, 0xc000000180, 0x9a7c18, 0xc0000dda10)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim_unix.go:44 +0xc3
github.com/containerd/containerd/runtime/v2/shim.run(0x9903a5, 0x15, 0x9a6840, 0x0, 0x0, 0x0)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:172 +0x37b
github.com/containerd/containerd/runtime/v2/shim.Run(0x9903a5, 0x15, 0x9a6840, 0x0, 0x0, 0x0)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:153 +0xc4
main.main()
/go/src/github.com/containerd/containerd/cmd/containerd-shim-runc-v2/main.go:27 +0x53
goroutine 18 [runnable]:
os/signal.loop()
/usr/local/go/src/os/signal/signal_unix.go:21
created by os/signal.init.0
/usr/local/go/src/os/signal/signal_unix.go:29 +0x41
goroutine 19 [runnable]:
github.com/containerd/containerd/runtime/v2/shim.setRuntime.func1()
Creating mailu_admin_1 ... done
created by github.com/containerd/containerd/runtime/v2/shim.setRuntime
Creating mailu_antispam_1 ... done
: exit status 2: unknown
ERROR: for smtp Cannot start service smtp: ttrpc: closed: unknown
ERROR: for imap Cannot start service imap: runtime: failed to create new OS thread (have 6 already; errno=11)
runtime: may need to increase max user processes (ulimit -u)
fatal error: newosproc
goroutine 20 [running]:
runtime.throw(0x98a876, 0x9)
/usr/local/go/src/runtime/panic.go:774 +0x72 fp=0xc00003d5f0 sp=0xc00003d5c0 pc=0x42dd12
runtime.newosproc(0xc00008d880)
/usr/local/go/src/runtime/os_linux.go:153 +0x1ba fp=0xc00003d650 sp=0xc00003d5f0 pc=0x42b5da
runtime.newm1(0xc00008d880)
/usr/local/go/src/runtime/proc.go:1853 +0xdc fp=0xc00003d690 sp=0xc00003d650 pc=0x4335dc
runtime.newm(0x9a7f78, 0x0)
/usr/local/go/src/runtime/proc.go:1832 +0x8f fp=0xc00003d6c0 sp=0xc00003d690 pc=0x43344f
runtime.startTemplateThread()
/usr/local/go/src/runtime/proc.go:1873 +0xa9 fp=0xc00003d6e8 sp=0xc00003d6c0 pc=0x4336c9
runtime.LockOSThread()
/usr/local/go/src/runtime/proc.go:3543 +0x6b fp=0xc00003d708 sp=0xc00003d6e8 pc=0x437f2b
runtime.ensureSigM.func1()
/usr/local/go/src/runtime/signal_unix.go:535 +0x34 fp=0xc00003d7e0 sp=0xc00003d708 pc=0x4584a4
runtime.goexit()
/usr/local/go/src/runtime/asm_amd64.s:1357 +0x1 fp=0xc00003d7e8 sp=0xc00003d7e0 pc=0x45ae51
created by runtime.ensureSigM
/usr/local/go/src/runtime/signal_unix.go:532 +0xd5
goroutine 1 [chan send]:
os/signal.signal_enable(0x8b7cf98f0000000f)
/usr/local/go/src/runtime/sigqueue.go:219 +0x6c
os/signal.enableSignal(...)
/usr/local/go/src/os/signal/signal_unix.go:50
os/signal.Notify.func1(0xf)
/usr/local/go/src/os/signal/signal.go:135 +0x8e
os/signal.Notify(0xc0000a05a0, 0xc0000a0600, 0x4, 0x6)
/usr/local/go/src/os/signal/signal.go:147 +0x182
github.com/containerd/containerd/runtime/v2/shim.setupSignals(0x0, 0xc000000180, 0x9a7c18, 0xc0000dda10)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim_unix.go:44 +0xc3
github.com/containerd/containerd/runtime/v2/shim.run(0x9903a5, 0x15, 0x9a6840, 0x0, 0x0, 0x0)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:172 +0x37b
github.com/containerd/containerd/runtime/v2/shim.Run(0x9903a5, 0x15, 0x9a6840, 0x0, 0x0, 0x0)
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:153 +0xc4
main.main()
/go/src/github.com/containerd/containerd/cmd/containerd-shim-runc-v2/main.go:27 +0x53
goroutine 18 [runnable]:
os/signal.loop()
/usr/local/go/src/os/signal/signal_unix.go:21
created by os/signal.init.0
/usr/local/go/src/os/signal/signal_unix.go:29 +0x41
goroutine 19 [runnable]:
github.com/containerd/containerd/runtime/v2/shim.setRuntime.func1()
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:119
created by github.com/containerd/containerd/runtime/v2/shim.setRuntime
/go/src/github.com/containerd/containerd/runtime/v2/shim/shim.go:119 +0x41
: exit status 2: unknown
ERROR: Encountered errors while bringing up the project.
If i run mailu without nginx-proxy running there is no error and it works perfectly.
I am out of ideas what the problem could be. There is no same port exposed and i cant see any same used dependencies what could be a problem. And the mentioned ulimit is set to 10000. There is nothing else running on this server, i dont think this should be a problem ether.
I hope you got some more experience with this kind and can help me.
Greeting