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    I was able to get rid of the error message by deleting the content of the table oc_bruteforce_attempts on nextcloud database. DELETE FROM nextcloud.oc_bruteforce_attempts You can put a where clause and limit it by IP so that only your login attempts ...

NextCloud - Enable fulltextsearch in UI   Fixing issue where (for some unknown reason) NC got reconfigured itself to this: cd /var/www/html/nextcloud sudo --user apache php occ fulltextsearch:configure '{ "provider_indexed": "{\"files\":\"1\"}" ...

Disable certificate verification sudo --user apache php occ config:app:set --value=false onlyoffice verify_peer_off Secret key (leave blank to disable) sudo --user apache php occ config:app:set --value="" onlyoffice jwt_secret Docs address sudo --...

  Run this command in the terminal. gsettings set org.gnome.mutter experimental-features "['scale-monitor-framebuffer']"   Log out from current GNOME3 session, and log back in. Fractional scaling should be now available.    

All below commands invoked as user root. Prepare folder structure mkdir -p /root/{auth,certs,storage} Generate self-signed SSL certificate Create san.cnf file with the following content. [req] default_bits = 4096 prompt = no default_md = sha256 ...

Disabling various CPU vulnerability mitigations This can be done kernel bootable parameters. Option Description mitigations=off noibrs noibpb nopti nospectre_v2 nospectre_v1 l1tf=off no...

Removing type 1 protection Some HGST/Oracle/Sun drives report Type 1 DIF protection. smartctl -i /dev/sdl === START OF INFORMATION SECTION === Vendor: HGST Product: H7240AS60SUN4.0T Revision: A3A0 Compliance: ...

Creating udev rule that disables disk write cache for specific drive models. Requirements: sdparm utility cat /etc/udev/rules.d/50-hgst.rules ACTION=="add", SUBSYSTEM=="block", ATTRS{vendor}=="HGST", ATTRS{model}=="H7240AS60SUN4.0T", RUN+="/bin/s...

  Symptoms   System beeps on tab-completion Certain operations in VI/VIM will activate sound beep   Resolutions   At the Linux Kernel Level Unload and blacklist pcspkr kernel module. modprobe -r pcspkr To blacklist a kernel module, there are mul...

  If you experience kernel panic when launching RHEL9 installer or booting RHEL9 kernel, you need to blacklist pinctrl_elkhartlake kernel module. The problem has been described in RedHat KB article: https://access.redhat.com/solutions/6628471 Solutio...

When read or write SCSI command isn't able to complete, Linux kernel reports this type of messages. sd 11:0:5:0: attempting task abort!scmd(0x00000000ec158cca), outstanding for 30206 ms & timeout 30000 ms sd 11:0:5:0: [sdp] tag#1015 CDB: Write(16) 8a 00 ...

Comments Step 2 ACK=1 increased (from 0 to 1) because of SYN=1 in Step 1. Step 3 SEQ=1 because of ACK=1 in Step 2 ACK=1 increased (from 0 to 1) because of SYN=1 in Step 2 Step 4 ACK=1, SEQ=1 remain the same because no additional data has b...

Disable/Enable virtual machine automatic startup qm set <VMID> --onboot [ 0 | 1 ] Shutdown virtual machine qm shutdown <VMID> qm shutdown --forceStop <VMID> Reboot virtual machine qm reboot <VMID> List all virtual machine IDs qm list | awk '$1...

Install Necessary Package If you want to make console (terminal) font bigger, try fonts-terminus. apt update apt install fonts-terminus -y Reconfigure system console font dpkg-reconfigure console-setup Choose character encoding   Choose ...

Requirements 4 systems with at least 2GB of RAM 4 systems, each with at least 2 CPU cores All cluster nodes should have static IPv4 address assigned. If you're using DHCP, make sure DHCP always assigns the same IP to each node (DHCP binding). IPv4 address...

Introduction On a laptop system, in order to prevent unnecessary battery drain when device isn't used, take advantage of suspend, followed by hibernation to disk feature. On many Linux distributions this is provided as part of systemd-udev package. The i...

Left: reMarkable 2 Right: reMarkable Paper Pro (max backlight)   Left: reMarkable 2 Right: reMarkable Paper Pro (no backlight)   Left: reMarkable 2 Right: reMarkable Paper Pro (no backlight)