Upgrade from 27.1.3 to 28.0.0 nextcloud:apache produces file not found for /dev/stdout and no logs within nextcloud

[DanClarke-io]

Following a update for nextcloud:apache from 27.1.3 to 28.0.0 by pulling latest docker image:

When checking the admin/overview I get an error of Error occurred whilst checking server setup

This is what shows in my app docker:
{"reqId":"wOQ19LBGxOkyZwkkeOMt","level":3,"time":"2023-12-13T10:05:34+00:00","remoteAddr":"XXX","user":"dan","app":"index","method":"GET","url":"/index.php/settings/ajax/checksetup","message":"Error while opening /dev/stdout","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0","version":"28.0.0.11","exception":{"Exception":"Exception","Message":"Error while opening /dev/stdout","Code":0,"Trace":[{"file":"/var/www/html/apps/logreader/lib/SetupChecks/LogErrors.php","line":57,"function":"getLogIterator","class":"OCA\\\\LogReader\\\\Log\\\\LogIteratorFactory","type":"->","args":[[2,3,4]]},{"file":"/var/www/html/lib/private/SetupCheck/SetupCheckManager.php","line":49,"function":"run","class":"OCA\\\\LogReader\\\\SetupChecks\\\\LogErrors","type":"->","args":[]},{"file":"/var/www/html/apps/settings/lib/Controller/CheckSetupController.php","line":643,"function":"runAll","class":"OC\\\\SetupCheck\\\\SetupCheckManager","type":"->","args":[]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"check","class":"OCA\\\\Settings\\\\Controller\\\\CheckSetupController","type":"->","args":[]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\\\\AppFramework\\\\Http\\\\Dispatcher","type":"->","args":[["OCA\\\\Settings\\\\Controller\\\\CheckSetupController"],"check"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\\\\AppFramework\\\\Http\\\\Dispatcher","type":"->","args":[["OCA\\\\Settings\\\\Controller\\\\CheckSetupController"],"check"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\\\AppFramework\\\\App","type":"::","args":["OCA\\\\Settings\\\\Controller\\\\CheckSetupController","check",["OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer"],["settings.CheckSetup.check"]]},{"file":"/var/www/html/lib/base.php","line":1069,"function":"match","class":"OC\\\\Route\\\\Router","type":"->","args":["/settings/ajax/checksetup"]},{"file":"/var/www/html/index.php","line":39,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/apps/logreader/lib/Log/LogIteratorFactory.php","Line":56,"message":"Error while opening /dev/stdout","exception":{},"CustomMessage":"Error while opening /dev/stdout"}}

File is present under app docker:

$ docker exec --user 33 nextcloud-app-1 ls -la /dev/std*
lrwxrwxrwx 1 root root 15 Dec 13 10:02 /dev/stderr -> /proc/self/fd/2
lrwxrwxrwx 1 root root 15 Dec 13 10:02 /dev/stdin -> /proc/self/fd/0
lrwxrwxrwx 1 root root 15 Dec 13 10:02 /dev/stdout -> /proc/self/fd/1

I can also not load logging within nextcloud:

Docker compose config:

version: '3'

services:
  db:
    image: mariadb:10.5
    command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
    restart: always
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=XXX
      - MYSQL_PASSWORD=XXX
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
      
  redis:
    image: redis:alpine
    restart: always

  app:
    image: nextcloud:apache
    # user: www-data
    dns:
      8.8.8.8
    restart: always
    volumes:
      - "/sharedfolders/SharedData/nextcloud:/var/www/html"
    environment:
      - VIRTUAL_HOST=XXX
      - LETSENCRYPT_HOST=XXX
      - LETSENCRYPT_EMAIL=XXX
      - MYSQL_HOST=db
      - REDIS_HOST=redis
      - MYSQL_ROOT_PASSWORD=XXX
      - MYSQL_PASSWORD=XXX
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud
    depends_on:
      - db
      - redis
    networks:
      - proxy-tier
      - default

  cron:
    image: nextcloud:apache
    dns:
      8.8.8.8
    restart: always
    volumes:
      - "/sharedfolders/SharedData/nextcloud:/var/www/html"
    entrypoint: /cron.sh
    depends_on:
      - db
      - redis

  proxy:
    image: nginxproxy/nginx-proxy:alpine
    dns:
      8.8.8.8
    restart: always
    ports:
      - 80:80
      - 443:443
    labels:
      com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
    volumes:
      - certs:/etc/nginx/certs:ro
      - vhost.d:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - /opt/nextcloud-apache/uploadsize.conf:/etc/nginx/conf.d/uploadsize.conf
    networks:
      - proxy-tier


  letsencrypt-companion:
    image: nginxproxy/acme-companion
    restart: always
    volumes:
      - certs:/etc/nginx/certs
      - acme:/etc/acme.sh
      - vhost.d:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/var/run/docker.sock:ro
    networks:
      - proxy-tier
    depends_on:
      - proxy


volumes:
  db:
  nextcloud:
  certs:
  acme:
  vhost.d:
  html:

networks:
  proxy-tier:

[urbenlegend]

I am not getting the admin/overview issue, but I am seeing the issue with the logs. It appears to not load initially and displays the "Could not load log entries" message, but after waiting for a long time, like about half a minute, the logs reappear. This seems really slow.

[isdnfan]

empty logs is upstream issue from the server nextcloud/logreader#1073

[joshtrichards]

@DanClarke-io What is your Nextcloud config.php logfile set to? Is it /dev/stdout by chance?

[DanClarke-io]

@DanClarke-io What is your Nextcloud config.php logfile set to? Is it /dev/stdout by chance?

It is! Thank you @joshtrichards, I've updated it to the following and the error has now gone away, thank you:

'log_type' => 'errorlog',
'logfile' => '',