Re: [docker-compose] syslog() not work

On 24/12/2022 12.18, Custom Log wrote:
> $ sudo ls -la /proc/$(pidof rsyslogd)/fd
> totale 0
> dr-x------ 2 root   root    0 dic 23 08:54 .
> dr-xr-xr-x 9 syslog syslog  0 dic 23 08:54 ..
> lr-x------ 1 root   root   64 dic 23 20:54 0 -> /dev/null
> l-wx------ 1 root   root   64 dic 23 20:54 1 -> /dev/null
> l-wx------ 1 root   root   64 dic 23 20:54 2 -> /dev/null
> lrwx------ 1 root   root   64 dic 23 08:54 3 -> 'socket:[19540]'
> lr-x------ 1 root   root   64 dic 23 20:54 4 -> /dev/urandom
> lr-x------ 1 root   root   64 dic 23 20:54 5 -> /proc/kmsg
> lrwx------ 1 root   root   64 dic 23 20:54 6 -> 'socket:[29286]'
> l-wx------ 1 root   root   64 dic 23 20:54 7 -> /var/log/syslog
> l-wx------ 1 root   root   64 dic 23 20:54 8 -> /var/log/kern.log
> l-wx------ 1 root   root   64 dic 23 20:54 9 -> /var/log/auth.log
> 
> $ netstat -x | grep 19540
> unix  2      [ ]         DGRAM                    19540 
> /run/systemd/journal/syslog
> 
> $ cat docker-compose.override.yml
> services:
>      web:
>          image: php:apache
>          extra_hosts:
>              -  "host1:192.168.1.15"
>          logging:
>              driver: syslog
>              options:
>                  syslog-address: "udp://host1:19540"
>                  tag: "{{.Name}}/{{.ID}}"
> 
> $ docker-compose run web php -r 'syslog(LOG_ERR, "ABC") && 
> print("OK!!!\n");'
> WARNING: Found orphan containers (window-resources_window-resources_1) 
> for this project. If you removed or renamed this service in your compose 
> file, you can run this command with the --remove-orphans flag to clean 
> it up.
> Creating window-resources_web_run ... done

This for you moved or deleted a composer file in another directory.

> OK!!!
> 
> $ journalctl -n | grep ABC || echo NOT FOUND
> NOT FOUND
> 
> Why?

For a socket ain't a udp or tcp port, it's a file, you need to share the 
socket file from the host into the docker image and then from within the 
docker access that socket file.

Check volumes in the docker-compose documentation.

Configure docker is generally thought as off topic as it's nothing to do 
with PHP.

-- 
  //Aho