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Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 25.0.3.2
Operating system and version (eg, Ubuntu 20.04): debian 11
Apache or nginx version (eg, Apache 2.4.25): replace me
PHP version (eg, 7.4): 8.1.14
The issue you are facing:
After flashing and activating the current NextcloudPi Image on a usb flash drive i had already two emergency boots (systemd is changing profile to emergency) in the last days. recommendation is to check journalctl and reboot.
i am new to linux so all i have found until now was that fail2ban is not working.
Not sure if this is really the problem.
Is this the first time you’ve seen this error? (Y/N):Y
Steps to replicate it:
- terminal: sudo service fail2ban status
- active: failed
The output of your Nextcloud log in Admin > Logging:
https://pastebin.com/Cu5C8NF0
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'passwordsalt' => 'xxxxxxxxxxxx',
'secret' => 'xxxxxxxxxxx',
'trusted_domains' =>
array (
0 => 'localhost',
7 => 'nextcloudpi',
5 => 'nextcloudpi.local',
8 => 'nextcloudpi.lan',
3 => 'nextcloudpi',
11 => 'xxxxxxxx',
1 => '192.168.xxx.xxx',
14 => 'nextcloudpi',
20 => 'xxxxxxxxxx.myfritz.net',
),
'datadirectory' => '/media/ssd/ncdata/data',
'dbtype' => 'mysql',
'version' => '25.0.3.2',
'overwrite.cli.url' => 'https://nextcloudpi/',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'xxxxxxxx',
'dbpassword' => 'xxxxxxxxxxxxx',
'installed' => true,
'instanceid' => 'occqjdyc2czx',
'memcache.local' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => '/var/run/redis/redis.sock',
'port' => 0,
'timeout' => 0.0,
'password' => 'xxxxxxxxxxxxxxxxxx=',
),
'tempdirectory' => '/media/ssd/ncdata/data/tmp',
'mail_smtpmode' => 'sendmail',
'mail_smtpauthtype' => 'LOGIN',
'mail_from_address' => 'admin',
'mail_domain' => 'ownyourbits.com',
'preview_max_x' => '2048',
'preview_max_y' => '2048',
'jpeg_quality' => '60',
'overwriteprotocol' => 'https',
'maintenance' => false,
'logfile' => '/media/ssd/ncdata/data/nextcloud.log',
'trusted_proxies' =>
array (
11 => '127.0.0.1',
12 => '::1',
13 => 'nextcloudpi',
14 => '192.168.xxx.xxx',
),
'loglevel' => '2',
'log_type' => 'file',
'htaccess.RewriteBase' => '/',
);
The output of your Apache/nginx/system log in /var/log/____:
[Wed Mar 15 19:09:05.582195 2023] [ssl:warn] [pid 740:tid 548383097920] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Wed Mar 15 19:09:05.585068 2023] [mpm_event:notice] [pid 740:tid 548383097920] AH00489: Apache/2.4.54 (Debian) OpenSSL/1.1.1n configured -- resuming normal operations
[Wed Mar 15 19:09:05.585132 2023] [core:notice] [pid 740:tid 548383097920] AH00094: Command line: '/usr/sbin/apache2'
[Wed Mar 15 19:13:48.419817 2023] [mpm_event:notice] [pid 740:tid 548383097920] AH00492: caught SIGWINCH, shutting down gracefully
[Wed Mar 15 19:14:27.228634 2023] [ssl:warn] [pid 613:tid 548253275200] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Wed Mar 15 19:14:27.281387 2023] [ssl:warn] [pid 745:tid 548253275200] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Wed Mar 15 19:14:27.287261 2023] [mpm_event:notice] [pid 745:tid 548253275200] AH00489: Apache/2.4.54 (Debian) OpenSSL/1.1.1n configured -- resuming normal operations
[Wed Mar 15 19:14:27.287378 2023] [core:notice] [pid 745:tid 548253275200] AH00094: Command line: '/usr/sbin/apache2'
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
PASTE HERE
https://pastebin.com/Cu5C8NF0
Output NCP Sytem Information
NextcloudPi version v1.51.0
NextcloudPi image NextCloudPi_RaspberryPi_v1.51.0.img
OS Debian GNU/Linux 11. 5.15.61-v8+ (aarch64)
automount yes
USB devices sda sdb
datadir /media/ssd/ncdata/data
data in SD no
data filesystem btrfs
data disk usage 11G/3.7T
rootfs usage 2.8G/28G
swapfile /var/swap
dbdir /var/lib/mysql
Nextcloud check ok
Nextcloud version 25.0.3.2
HTTPD service up
PHP service up
MariaDB service up
Redis service up
HPB service down
Postfix service up
Internet check ok
Public IPv4 85.195.252.71
Public IPv6 2a02:168:85be:0:3d9d:79ea:f8c0:5959
Port 80 open
Port 443 open
IP 192.168.xx.xx
Gateway 192.168.xx.xx
Interface eth0
Certificates xxxxxxxxx.myfritz.net
NAT loopback no
Uptime 2min