(Edit:) Warum hast du eigentlich im ersten Beitrag geschrieben, es sei nodeJS 12 installiert? Da ist vermutlich so einiges krumm in dem System, was nodeJS angeht. Kann aber auch zusätzlich noch durch den Murks den die Elsterforelle da immer fabriziert verfrickelt worden sein.

Merkwürdig.

package-lock json?

pi@ioBroker-GartenHalle:/opt/iobroker/backups $ dir
2021_04_12-22_58_14_backupiobroker.tar.gz
2021_05_03-00_16_22_backupiobroker.tar.gz

Kopier ich mir die jetzt auf meinen PC und setzt das System neu auf, oder kann ich die auch wieder einspielen?

node/npm richtig installiert?

which nodejs node npm && nodejs -v && node -v && npm -v && apt policy nodejs

npm ERR! No connection to databases possible

Merkwürdig.
Hast du da mal auf redis umgestellt?
Was liefert

iobroker status

Am Rande: Dein Passwort für den pi solltest du auch mal von 'raspberry' auf was individuelles ändern.

sudo netstat -tulpen

bringt?

Was passiert denn nun bei

cd /opt/iobroker
sudo -H -u iobroker npm install iobroker

Bitte VOLLSTÄNDIGE Ein- und Ausgaben, inkl. login prompt. Kopier einfach die komplette Konsole.

Hast du jetzt den ganzen Quatsch den der da in seiner Anleitung seinem Pfusch verzapft durchgeführt?

dmesg -T | grep -i ext4
[Sat May 15 11:14:18 2021] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=738a4d67-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[Sat May 15 11:14:21 2021] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[Sat May 15 11:14:21 2021] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[Sat May 15 11:14:24 2021] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)

Ich bin hier auch diese Anleitung durch gegangen: elzershark.com

Doch da erhalte ich während der Ausführung folgenden Fehler

==========================================================================
    Installing ioBroker (3/4)
==========================================================================

npm ERR! code 22
npm ERR! path /opt/iobroker/node_modules/iobroker.js-controller
npm ERR! command failed
npm ERR! command sh -c node iobroker.js setup first
npm ERR! No connection to databases possible ...

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2021-05-15T09_09_16_803Z-debug.log

Also ich hab immer Probleme mit dem js-controller, der lässt sich aber nicht neu installieren.

sudo reboot

und dann als erste Aktion nochmal

dmesg -T | grep -i ext4

/opt/iobroker $ dmesg -T | grep -i ext4
[Fri May 14 08:56:39 2021] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=738a4d67-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[Fri May 14 08:56:42 2021] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[Fri May 14 08:56:42 2021] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[Fri May 14 08:56:43 2021] EXT4-fs (mmcblk0p2): recovery complete
[Fri May 14 08:56:43 2021] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[Fri May 14 08:56:43 2021] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[Fri May 14 08:56:45 2021] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)

Dann habe ich noch

iobroker start

eingegeben, aber die Oberfläche ist dennoch nicht erreichbar.

Ich weiß nicht, ob's was hilft, aber ich hab noch folgenden Befehl getestet:

sudo netstat -tulpen
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode      PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      0          17583      642/sshd
tcp        0      0 0.0.0.0:8765            0.0.0.0:*               LISTEN      0          16006      355/python
tcp        0      0 127.0.0.1:7999          0.0.0.0:*               LISTEN      0          16517      498/motion
tcp        0      0 0.0.0.0:8079            0.0.0.0:*               LISTEN      0          16515      498/motion
tcp        0      0 0.0.0.0:8083            0.0.0.0:*               LISTEN      0          16516      498/motion
tcp6       0      0 :::22                   :::*                    LISTEN      0          17585      642/sshd
udp        0      0 0.0.0.0:68              0.0.0.0:*                           0          15037      634/dhcpcd
udp        0      0 0.0.0.0:60003           0.0.0.0:*                           108        15733      386/avahi-daemon: r
udp        0      0 0.0.0.0:5353            0.0.0.0:*                           108        15731      386/avahi-daemon: r
udp6       0      0 :::546                  :::*                                0          15832      634/dhcpcd
udp6       0      0 :::54391                :::*                                108        15734      386/avahi-daemon: r
udp6       0      0 :::5353                 :::*                                108        15732      386/avahi-daemon: r

Als welcher user wurde das ausgeführt?
Und warum darf der iobroker nicht da herumschreiben?

iobroker fix
dmesg -T | grep -i ext4

/opt/iobroker $ sudo -H -u iobroker npm install iobroker                                        .js-controller
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/acorn-globals
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/char-regex
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/jest-pnp-resolver
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/bser
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/fb-watchman
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/capture-exit
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/ecc-jsbn
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/tr46
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/w3c-hr-time
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/acorn-globals
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/char-regex
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/jest-pnp-resolver
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/bser
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/fb-watchman
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/capture-exit
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/ecc-jsbn
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/tr46
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/zigbee-herdsman/node_modules/w3c-hr-time
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/acorn-globals
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/char-regex
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/jest-pnp-resolver
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/bser
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/fb-watchman
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/capture-exit
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/ecc-jsbn
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/tr46
npm WARN checkPermissions Missing write access to /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman/node_modules/w3c-hr-time
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.3.1 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.3.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"arm"})
npm WARN typedoc@0.20.28 requires a peer of typescript@3.9.x || 4.0.x || 4.1.x but none is installed. You must install peer dependencies yourself.
npm WARN typedoc@0.20.28 requires a peer of typescript@3.9.x || 4.0.x || 4.1.x but none is installed. You must install peer dependencies yourself.

npm ERR! code EACCES
npm ERR! syscall access
npm ERR! path /opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/acorn-globals
npm ERR! errno -13
npm ERR! Error: EACCES: permission denied, access '/opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/acorn-globals'
npm ERR!  [Error: EACCES: permission denied, access '/opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/acorn-globals'] {
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/opt/iobroker/node_modules/iobroker.zigbee/node_modules/zigbee-herdsman-converters/node_modules/acorn-globals'
npm ERR! }
npm ERR!
npm ERR! The operation was rejected by your operating system.
npm ERR! It is likely you do not have the permissions to access this file as the current user
npm ERR!
npm ERR! If you believe this might be a permissions issue, please double-check the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/iobroker/.npm/_logs/2021-05-14T15_39_52_968Z-debug.log

sudo -H -u iobroker npm install iobroker.js-controller

Ich erhalten dann folgende Meldung

sudo -H -u iobroker npm install iobroker.js-controller
[..................] / rollbackFailedOptional: verb npm-session 4dd9bb70681b3b8

cd /opt/iobroker
sudo -H -u iobroker npm install iobroker.js-controller

Bitte auch vollständig mit Eingabezeile und allem posten