https://wiki.rimball.com/ 2026-07-24T08:14:29+00:00 https://wiki.rimball.com/ https://wiki.rimball.com/_media/wiki/dokuwiki.svg text/html 2024-09-01T03:29:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/backups?rev=1725161359&do=diff How I backup servers locally and in the cloud using rsync, restricted-rsync, rsnapshot, restic, backblaze b2. Android phones have their photos backed up to a central backup server using syncthing, which is then backed up to the cloud using restic. Servers are backed up using rsync and restricted-rsync pulling from a centralized backup server. text/html 2021-10-21T02:08:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/btrfs?rev=1634782093&do=diff Setup regular scrubbing * <https://www.jwillikers.com/btrfs-scrub> * <https://blog.alexanderkoch.net/2015/06/btrfs-scrubbing-via-systemd-timers.html> look into the btrfs maintenance scripts <https://github.com/kdave/btrfsmaintenance> text/html 2022-09-20T02:33:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/debootstrap?rev=1663641215&do=diff apt-get install debootstrap debootstrap --include=openssh-server,vim,whiptail,language-pack-en-base --variant=minbase jammy rootfs/ http://us.archive.ubuntu.com/ubuntu debootstrap --include=openssh-server,vim,whiptail,language-pack-en-base \ --variant=minbase raring /mnt/usb http://us.archive.ubuntu.com/ubuntu http_proxy="192.168.1.7:8000" debootstrap \ --include=openssh-server,vim,whiptail,language-pack-en-base,bzip2 \ ,sudo,lsb-release,pciutils,usbutils,iputils-ping,rsyslog,isc-dhcp-cl… text/html 2021-09-09T00:30:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/grub?rev=1631147407&do=diff To get the grub bootloader to ignore a driver as an option to boot from use the GRUB_OS_PROBER_SKIP_LIST option in /etc/default/grub. example GRUB_OS_PROBER_SKIP_LIST="48cb3fae-2c22-47c6-bfc7-799572ce14b7@/dev/mapper/root-drive use the “blkid” text/html 2021-11-11T04:07:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/lvm?rev=1636603639&do=diff Various Information 8e is the partition type for Linux LVM if you get “Incorrect metadata area header checksum” check the filters in /etc/lvm.conf LVM1 Extent Sizes Only applies to LVM1 * 4 4mB extents == 16mB * There is a kernel limit of 65,536 physical extents per logical volume text/html 2021-11-11T03:07:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/mdadm?rev=1636600055&do=diff Create \ Start \ Stop Arrays Create a RAID 1 device mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/{left,right}_raid1 RAID 5 mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdd1 /dev/sdc1 /dev/sdb1 Create a degraded RAID device with a missing drive text/html 2024-01-13T04:34:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/minecraft_bedrock_server?rev=1705120479&do=diff /home/bedrock/.config/systemd/user/bedrock.service [Unit] Description=Minecraft bedrock server After=network.target [Service] Type=forking #User=%i WorkingDirectory=/home/bedrock/server PIDFile=/home/bedrock/server/pidfile ExecStart=/home/bedrock/bedrock-control.sh start ExecStop=/home/bedrock/bedrock-control.sh stop TimeoutStopSec=15 # Hardening ProtectSystem=full PrivateTmp=true SystemCallArchitectures=native MemoryDenyWriteExecute=true NoNewPrivileges=true [Install] WantedBy=default.tar… text/html 2025-05-24T02:44:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/misc?rev=1748054694&do=diff update-alternatives --set editor /usr/bin/vim.basic update-alternatives --config editor export EDITOR=/usr/bin/vim echo 'export EDITOR=/usr/bin/vim' >> ~/.bash_profile <https://askubuntu.com/questions/1116800/change-default-editor-in-lxd-snap> text/html 2021-10-04T22:19:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/netboot?rev=1633385967&do=diff Howto netboot a computer to do a network install of Ubuntu. A screen and keyboard will still be needed for this unless you setup a preseed file Setting up tftp server: apt-get install tftpd-hpa Download the latest netboot.tar.gz image from <http://cdimage.ubuntu.com/netboot/> and untar to /var/lib/tftpboot/netboot-17.10/ dnsmasq configuration text/html 2024-06-02T01:18:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/openssl?rev=1717291114&do=diff Create a certificate request Create a ECC key Create a ECC private key using the prime256v1 algorithm openssl ecparam -out server.key -name prime256v1 -genkey using secp384r1 openssl ecparam -out server.key -name prime256v1 -genkey Create CSR from key text/html 2021-10-04T21:14:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/regular_expressions?rev=1633382065&do=diff * Matches the preceding character zero or more times ? Matches preceding character ZERO or ONE + Matches preceding character ONE or MORE times . Matches any ONE character except a newline | OR ^ Matches the beginning of lines [^] ^ When used inside square brackets will match any character not in class $ Matches the end of a line \A matches only at the start of a string \Z matches only at the end of the string \b word boundary () Used for grouping {m,n} at least m occurrences of the preceding ch… text/html 2021-11-17T02:40:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/rsyslog?rev=1637116813&do=diff Howto get syslog data from remote hosts split up into separate log files. # provides UDP syslog reception module(load="imudp") #input(type="imudp" port="514") input(type="imudp" port="514" ruleset="writeRemoteDataHosts") Create a separate file per host text/html 2022-05-03T02:06:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/screen?rev=1651543567&do=diff Screen commands All commands are prefixed with CTRL-A _ Monitor session for silence M Monitor for activity P Previous window N Back to your shell C New screen window with a new shell process “ List of current open sessions text/html 2023-02-06T19:35:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/sed?rev=1675712117&do=diff To remove all lines that begin with a # and then delete all blank lines sed '/^#/d; /^$/d' dovecot-ldap.conf sed -r '/^#/d; /^ +#/d; /^$/d; s/^/ /' dovecot.conf # insert 5 blank spaces at beginning of each line (make page offset) sed 's/^/ /' text/html 2022-04-21T02:09:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/serial?rev=1650506972&do=diff using minicom to connect to a serial port minicom -b 115200 /dev/ttyACM0 to exit from minicom use “Ctrl+A x” <https://kb.plugable.com/serial-adapter/how-to-connect-to-a-serial-device-linux> text/html 2021-09-09T21:26:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/systemd?rev=1631222780&do=diff stopping/starting systemd user services from cron <https://askubuntu.com/questions/1083846/restarting-a-systemd-user-service-from-within-cron> <https://askubuntu.com/questions/1007055/systemctl-edit-problem-failed-to-connect-to-bus> text/html 2024-04-10T01:33:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/tls?rev=1712712805&do=diff SSL Labs <https://testssl.sh> SSLyze Certificate order leaf certificate followed by intermediaries and root, see “certificate_list” in section 7.4.2 below. RFC 5246 7.4.2 Server Certificate RFC 5280 Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile use the Mozilla SSL Config generator to generate strong SSL configuration text/html 2021-11-19T02:18:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/tmux?rev=1637288287&do=diff tmux commands quick tips All commands are prefixed with CTRL+b % - vsplit " - horizontal split Z - make active pane large c - new window / pane 0-xyz - switch to that named window d - detach, or just tmux detach s - show the sessions To swap windows use the swap-window command To move the current window down one, or up one respectively. text/html 2023-12-22T17:50:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/vagrant?rev=1703267408&do=diff Creating base vagrant boxes * zero out disk space using dd or zerofree * vagrant user * update text/html 2021-11-11T03:13:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/vim?rev=1636600397&do=diff To show tabs and end of lines * :set list Convert tabs to spaces * Convert tabs to spaces Search highlighting Removes highlighting from last search * :nohlsearch (:noh) Disables it for all searches * :set nohlsearch enables it for all searches * :set hlsearch text/html 2024-11-14T02:49:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.rimball.com/notes/zabbix?rev=1731552589&do=diff certificate_monitoring lld