Error logs flooded with dns_get_record() errors

ℹ️ Support
,
1
  • Nextcloud Server version:
    • Hub 9 (30.0.5)
  • Operating system and version:
    • Debian GNU/Linux 12 (bookworm)
  • Web server and version:
    • Apache/2.4.62 (Debian)
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • none
  • PHP version:
    • 8.3
  • Is this the first time you’ve seen this error? (Yes / No):
    • no
  • When did this problem seem to first start?
    • at least two months ago
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • through SSL wget https://download.nextcloud.com/server/releases/latest.zip
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • I am using PiHole

Summary of the issue you are facing:

Error logs flooded with dns_get_record() errors.

Steps to replicate it (hint: details matter!):

Click “Administration settings” in the browser.

Log entries

Nextcloud

{"reqId":"V3Ik3wMeSuJmpF0CFitN","level":3,"time":"2025-01-23T07:28:55+01:00","remoteAddr":"192.168.PC","user":"USER","app":"PHP","method":"GET","url":"/index.php/settings/ajax/checksetup","message":"dns_get_record(): A temporary server error occurred. at /var/www/nextcloud/lib/private/Http/Client/DnsPinMiddleware.php#99","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0","version":"30.0.5.1","data":{"app":"PHP"},"id":"6791e33fb914a"}

This error occured 07:28:55, thrice 07:28:54, twice 07:17:15, twice 07:17:14 and so on.

Web Browser

no errors

Web server / Reverse Proxy

The output of your Apache log in /var/log/____:

[Thu Jan 23 05:14:36.315620 2025] [php:error] [pid 1162705:tid 1162705] [client 143.110.***:42690] script '/var/www/nextcloud/alive.php' not found or unable to stat

[Thu Jan 23 07:14:13.214593 2025] [php:warn] [pid 1190731:tid 1190731] [client 192.168.PC:35980] PHP Warning:  require_once(/var/www/nextcloud/lib/versioncheck.php): Failed to open stream: No such file or directory in /var/www/nextcloud/ocs/v1.php on line 7

[Thu Jan 23 07:14:13.215009 2025] [php:warn] [pid 1162703:tid 1162703] [client 192.168.PC:35970] PHP Warning:  require_once(/var/www/nextcloud/ocs/../lib/versioncheck.php): Failed to open stream: No such file or directory in /var/www/nextcloud/ocs/v1.php on line 7

[Thu Jan 23 07:14:13.715412 2025] [php:error] [pid 1162703:tid 1162703] [client 192.168.PC:35970] PHP Fatal error:  Uncaught Error: Failed opening required '/var/www/nextcloud/ocs/../lib/versioncheck.php' (include_path='.:/usr/share/php') in /var/www/nextcloud/ocs/v1.php:7\nStack trace:\n#0 /var/www/nextcloud/ocs/v2.php(7): require_once()\n#1 {main}\n  thrown in /var/www/nextcloud/ocs/v1.php on line 7

[Thu Jan 23 07:14:13.715412 2025] [php:error] [pid 1190731:tid 1190731] [client 192.168.PC:35970] PHP Fatal error:  Uncaught Error: Failed opening required '/var/www/nextcloud/ocs/../lib/versioncheck.php' (include_path='.:/usr/share/php') in /var/www/nextcloud/ocs/v1.php:7\nStack trace:\n#0 /var/www/nextcloud/ocs/v2.php(7): require_once()\n#0 /var/www/nextcloud/ocs/v2.php(7): require_once()\n#1 {main}\n  thrown in /var/www/nextcloud/ocs/v1.php on line 7

I updated from 30.0.4 to 30.0.5. around this time so they might be related to that. There are no other errors after that.

Configuration

Nextcloud

    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
           ***Removed Private Info***
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "30.0.5.1",
        "overwrite.cli.url": "https:\/\/***PI***.local",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "default_phone_region": "DE",
        "filelocking.enabled": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0
        },
        "mail_smtpmode": "sendmail",
        "mail_sendmailmode": "pipe",
        "maintenance": false,
        "maintenance_window_start": 3,
        "log_type": "file",
        "logtimezone": "Europe\/Berlin",
        "logfile": "\/var\/log\/nextcloud.log",
        "loglevel": 2,
        "syslog_tag": "Nextcloud",
        "theme": "",
        "enable_previews": true,
        "enabledPreviewProviders": [
            "OC\\Preview\\PNG",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\GIF",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\BMP",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\MP3",
            "OC\\Preview\\TXT",
            "OC\\Preview\\MarkDown",
            "OC\\Preview\\Movie",
            "OC\\Preview\\MKV",
            "OC\\Preview\\MP4",
            "OC\\Preview\\AVI",
            "OC\\Preview\\PDF"
        ],
        "preview_max_x": 1024,
        "preview_max_y": 1024,
        "preview_max_filesize_image": 20,
        "preview_max_memory": 512
    }
}

Apps

Enabled:
  - activity: 3.0.0
  - bruteforcesettings: 3.0.0
  - calendar: 5.0.9
  - circles: 30.0.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - contacts: 6.1.3
  - contactsinteraction: 1.11.0
  - cospend: 3.0.8
  - dashboard: 7.10.0
  - dav: 1.31.1
  - federatedfilesharing: 1.20.0
  - federation: 1.20.0
  - files: 2.2.0
  - files_downloadlimit: 3.0.0
  - files_pdfviewer: 3.0.0
  - files_reminders: 1.3.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - files_versions: 1.23.0
  - firstrunwizard: 3.0.0
  - logreader: 3.0.0
  - lookup_server_connector: 1.18.0
  - nextcloud_announcements: 2.0.0
  - notes: 4.11.0
  - notifications: 3.0.0
  - oauth2: 1.18.1
  - password_policy: 2.0.0
  - photos: 3.0.2
  - previewgenerator: 5.7.0
  - privacy: 2.0.0
  - provisioning_api: 1.20.0
  - recommendations: 3.0.0
  - related_resources: 1.5.0
  - richdocuments: 8.5.3
  - richdocumentscode_arm64: 24.4.1103
  - serverinfo: 2.0.0
  - settings: 1.13.0
  - sharebymail: 1.20.0
  - support: 2.0.0
  - survey_client: 2.0.0
  - systemtags: 1.20.0
  - tasks: 0.16.1
  - text: 4.1.0
  - theming: 2.5.0
  - twofactor_backupcodes: 1.19.0
  - twofactor_totp: 12.0.0-dev
  - updatenotification: 1.20.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - weather_status: 1.10.0
  - webhook_listeners: 1.1.0-dev
  - workflowengine: 2.12.0
Disabled:
  - admin_audit: 1.20.0
  - app_api: 4.0.5 (installed 4.0.0)
  - documentserver_community: 0.1.20 (installed 0.1.20)
  - encryption: 2.18.0
  - files_external: 1.22.0
  - mail: 4.0.2 (installed 4.0.2)
  - onlyoffice: 9.5.0 (installed 9.5.0)
  - suspicious_login: 8.0.0
  - twofactor_nextcloud_notification: 4.0.0
  - user_ldap: 1.21.0