https://wiki.kptree.net/ 2026-10-03T06:20:29+00:00 https://wiki.kptree.net/ https://wiki.kptree.net/_media/wiki:dokuwiki.svg text/html 2025-09-29T05:35:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:misc?rev=1759124159&do=diff linux dmesg command systemd journal journalctl tzdata timezone apt upgrade update install remove crontab man apropos tldr ip tc systemctl journalctl pbcopy pbpaste copy paste Commonly used commands and scripts dmesg sudo dmesg lists the OS boot messages between grub and os up. sudo dmesg --level=emerg,alert,crit,err,warn,notice,debug give a more succinct list of focus potential problem issues. * emerg - system is unusable text/html 2025-01-03T00:55:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:back-up_server_old?rev=1735865746&do=diff linux debian backup lvm filesystem server nfs mount showmount Back-up Server Old Setup This has been more difficult than I would have thought. I have used rsnapshot the past couple of years (2020-21), but have never really been happy with it for many reasons. The main reason is that it has never worked well, the rsync is reasonably fast, but the rsnapshot takes far too long. Other problems include; difficulties in set-up, and concerns will reliability. Recently I noticed that Debian no longer … text/html 2025-03-02T07:31:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:nftables?rev=1740900680&do=diff linux router nftables firewall NFTables Configuration The best reference for nftables is at the dedicated wiki wiki nftables. Some other references I found nftables router. The reference at stosb is good, but not for a router Explaining My Configs: nftables. Nftables Cheatsheet After a lot of experimenting the following is my NFTables router configuration file. Create the following file called: text/html 2024-09-21T12:10:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:ppp?rev=1726920633&do=diff linux router pppoe pppoed isp mtu dns dhcp ISP PPPoE Network Setup A reasonably comprehensive discussion on Ubuntu forums Setup Ubuntu Server as a router using a PPPoE connection, MTU and TCP MSS when using PPPoE. Also from Ubuntu forums How to Optimize your Internet Connection using MTU and RWIN. Ubuntu documentation ADSLPPPoE. PPPD manual page. Another reference is Confirm Blog Using PPPoE on Linux. Some other references: * Connecting to NBN HFC with a linux router] Internode router set… text/html 2025-05-24T13:09:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:wireguard?rev=1748092165&do=diff linux router vpn wireguard docker qr_code qr Wireguard VPN access from WAN to LAN I use a Docker instance for my Wireguard server now. I use 2 forms of vpn (virtual private network) on my home server. * VPN to gain remote secure private access to my home LAN from the WAN (internet). This is the one I am describing here. text/html 2023-12-23T13:07:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:ipmi?rev=1703336839&do=diff linux ipmi ipmitool cli bmc IPMI CLI Tools Much copied from Adam Sweet's wiki on IPMI. What is IPMI? IPMI is standard which allows remote server management, primarily developed by Intel. IPMI cards, known as Baseboard Management Cards (BMCs) are primitive computers in their own right and are operational all the time, so long as the server has a power source. The server itself does not need to be powered on, or the operating system operational for the BMC to work, it just needs a power source… text/html 2025-04-06T07:41:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:manjaro?rev=1743925318&do=diff linux manjaro arch archlinux vuescan flatpak davfs cups printing print Manjaro Setup Notes I tried Manjaro circa 2019 for a couple of years as my main Linux Desktop. I had no major problems with it. An occasional minor problem this nVidia graphic card and some minor issues with updates. Having used Debian / Ubuntu the past 10 years on servers I decided to switch to Debian testing desk top with XFCE. Debian testing basically give a similar level of latest updates as Manjaro/Arch. I have not … text/html 2026-07-12T13:14:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:tc?rev=1783862084&do=diff linux router tc traffic control TC - Traffic Control The Linux kernel's network stack has network traffic control and shaping features. The iproute2 package installs the tc command to control these via the command line. Queuing controls how data is sent; receiving data is much more reactive with fewer network-oriented controls. However, since TCP/IP packets are sent using a slow start the system starts sending the packets slow and keeps sending them faster and faster until packets start getti… text/html 2025-10-14T05:59:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:misc?rev=1760421555&do=diff linux router monitor links darkstat glances ntopng iftop nethogs Router Miscellaneous Monitoring There are a number of linux monitoring packages available. See these links for more examples see, 13 Linux Performance Monitoring Tools – Part 2, and 30 Linux System Monitoring Tools Every SysAdmin Should Know. Below are a few that I have tried and use. iftop iftop - display bandwidth usage on an interface by host Use text/html 2025-05-18T07:27:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:ipmi_console?rev=1747553262&do=diff linux bmc grub ipmi console redirection cli IPMI Console Setup I have 3 computers from Supermicro with BMC and IPMI. The Supermicro provided utility program IPMIView is good, but the iKVM console redirection facility is woefully unreliable and also seems to be poorly documented! (Probably because it is based upon Java.) Interestingly this utility program is provided for Windows and Linux, and is even available in Manjaro AUR repositories. (This probably actually makes sense as many Supermic… text/html 2023-12-26T03:39:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:systemd?rev=1703561958&do=diff systemd systemctl timer timers journalctl linux debian setup customise customisation systemd Stuff * How to create systemd service unit in Linux * Set systemd service to execute after fstab mount * DigitalOcean Tutorials systemd: * How To Use Systemctl to Manage Systemd Services and Units * Understanding Systemd Units and Unit Files * How To Use Journalctl to View and Manipulate Systemd Logs * Systemd Essentials: Working with Services, Units, and the Journal * NFS mount vi… text/html 2026-03-22T01:59:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/tech_notes:linux_commands?rev=1774144789&do=diff cli commands Linux CLI Commands Various Linux CLI (Command Line Interface) Commands with examples and grouped by type File System Find specific file types * Using ls: * ls -lhaF | grep ^l # list links * ls -lhaF | grep ^d # list directories * ls -lhaF | grep ^- text/html 2025-08-17T00:27:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:network_setup?rev=1755390424&do=diff network interface netplan nic setup loopback eth ethernet bridge bond networkd linux debian setup command Network Setup Most server have more than one network connection although one is technically enough. Routers by definition need to have a minimum of at least 2 network connections. It would seem that Debian Linux supports multiple methods to define network connections: text/html 2026-02-03T11:50:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:disk?rev=1770119432&do=diff linux debian nfs parted fstab format partion disk mount umount fstab unmount Linux Block Device Notes Linux Disk Partition and Format Notes Some basic tools * ls -l /dev/disk/by-uuid/ will list the disks with UUIDs * lsblk to list partitions (or list block devices) * lsblk -f or blkid to list the UUIDs * sudo blkid will list data blocks text/html 2025-01-05T03:25:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/docker_notes:fileshare?rev=1736047559&do=diff linux docker file_sharing share sharing syncthing privatebin File Sharing All the applications have pro and cons. This is listed at the beginning of each header. There have been considered 3 different levels of access as described by the applications used: * Nextcloud - a full privately hosted publicly accessible file shareing application, with many additional features text/html 2026-01-31T14:34:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:rsync?rev=1769870083&do=diff rsync backup linux debian rsnapshot Rsync These are my rsync notes. I also used to use rsnapshot, however I was unhappy with the performance of this application and moved to restic. The original rsnapshot notes have been rolled up and moved to the bottom of this page. Rsync Notes Main rsync command usage summary text/html 2026-07-26T08:58:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/wiki:syntax?rev=1785056307&do=diff Formatting Syntax DokuWiki supports some simple markup language, which tries to make the datafiles to be as readable as possible. This page contains all possible syntax you may use when editing the pages. Simply have a look at the source of this page by pressing text/html 2025-01-05T06:27:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:nfs?rev=1736058447&do=diff linux debian nfs fstab server NFS There are a lot of resources online for NFS (Network File System). Nevertheless I decided to place my notes here to help me with my configuration, as there are a number of nuances that such notes will potentially assist with in the future. Sadly a number of resources I use seem out of date, not updated and/or possible subject to disappearance. text/html 2025-02-08T09:11:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:kvm?rev=1739005865&do=diff server kvm virtual command debian machine qemu virsh qcow linux command setup nbd network block device KVM Setup I original setup my main server and virual machines all with Ubuntu. However I have started using Debian and find it leaner than Ubuntu. I am slowly moving my various servers and virtual machines to Debian. * Install And Configure KVM In Ubuntu 20.04 Headless Server * Installing KVM on Debian 10 * How To Install KVM Hypervisor on Debian 12|11|10 * How to install KVM server on … text/html 2024-03-09T02:45:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/tech_notes:ssh?rev=1709952350&do=diff linux ssh ssh-keygen ssh with key files The advantages of using SSH key-based include: * Improved security * Easier access to ssh (if password keys are not used) Clearly use of unique password encrypted keys gives best security. However if a user has access to you terminal and user password they effectively have full system access anyway. text/html 2024-12-15T03:35:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:dns_dhcp?rev=1734233746&do=diff linux router dns dhcp bind ip ipv6 radvd host dig nslookup DHCP / DNS Setup Outdated I have moved my DNS and DHCP servers to Docker, Docker-DNS Server. I am still using ISC_Bind9, but am now using ISC_Kea for DHCP as ISC_Bind is no longer supported as of 2022. tl;dr; Further to this I am not looking at backups for both these services on my local area network. Whilst these services worked reliably well, when ever I shutdown the the router with text/html 2024-06-23T01:11:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:netfilter?rev=1719105097&do=diff linux router mtu netfilter Basic Netfilter Function Block Diagram Both NFTables and IPTables use the Netfilter framework provided in the Linux kernal. NFtables was implemented to supersede IPTables, which due to the widespread use of IPTables, will probably take a long time. The following is a basic block diagram of the Netfilter Filter and NAT (Network Address Translation) functions, which are the basic requirements for router. Incoming Packets | ┌────────────… text/html 2026-09-05T02:45:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/docker_notes:docker-compose?rev=1788576313&do=diff linux docker compose docker-compose docker_compose container network Docker-Compose * Docker Docs Compose specification, The Compose Specification Some commands: * docker-compose pull, it would seem this is required to ensure the latest image(s) is downloaded * docker-compose up -d --build --force-recreate * -d run as deamon (in background) * --build on required if the compose includes building an image text/html 2026-08-23T11:41:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/docker_notes:docker-mailserver?rev=1787485304&do=diff linux docker mail mailserver alpine dovecot postfix sqlite s6 s6-rc Docker mailserver This mailserver setup follows Workaround's SPmail guide for Debian 13 “Trixie”. Key changes are that instead of installing on Debian 13 virtual machine1, with a Maria mysql database2, this setup is for installation on latest Alpine linux Docker image with s6-rc init using maria database. I toyed with sqlite and basically got it functional, however the support apps do not function with sqlite, so I went back… text/html 2026-05-04T05:34:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:mswindows_notes?rev=1777872894&do=diff mswindows windows setup tip notes personal license powertoys KPTree - Home Desktop Setup Background I have Windows on my main desk top machine, it is dual boot with Debian/XFCE. I am using Debian almost exclusively now. The BIOS based dual boot works well, I have it defaulting to Debian. I do not currently have a Windows VM setup on my main server. My 3 sons also have computers with Windows on them. Lastly, I am required to used company Windows machines at work. Hence I like to keep a li… text/html 2025-11-30T10:55:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:network?rev=1764500119&do=diff linux debian ubuntu router network netplan interface vlan ipv6 ip Debian Server Network Setup Debian Network - Server Interface Setup As of Debian 10 (Buster) Debian still by default uses this interface Setup. It can be setup to use netplan inface. Ubuntu (as of version 14.04) defaults to Predictable Network Interface Names, also see Systemd Docs. I have no problem with this. In any case, you should always check dev names and not assume names, such as text/html 2026-02-15T00:37:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/docker_notes:docker-dns?rev=1771115844&do=diff linux docker dns bind9 Docker - DNS Server What Is DNS and How Does It Work – A Comprehensive Guide I have been using Bind9 as my home LAN DNS for the past few years. I originally operated it on bare metal on my home router computer. In mid 2023 I successfully moved my Bind9 primary instance to my main home server in a container and created a slave instance in a container running on my home router computer. I created a Docker Bind9 Image using base Docker Alpine Linux images, with S6 init s… text/html 2025-01-04T10:36:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/linux_router:ipoe?rev=1735987016&do=diff linux router bridged modem isp ipoe mtu dns dhcp ISP IPoE DHCP Setup Notes Notes on Setting up a Linux router for IPoE DHCP. old, tldr; After a few years of reasonable successful use of bridged VDSL modem with Linux Router running pppoe and nftables my ISP informed me that they do not use authentication on the connection with username and password. In fact they mention they used dhcp IPoE as well as PPPoE. I set up my spare modem as they described and it worked straight way. When I tried my… text/html 2025-01-10T03:55:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:symlinks?rev=1736481311&do=diff simlinks ln linux setup command Simlinks A symlink is a soft or hard link to a directory location to another directory location or file. It effectively allows a directory tree (soft link only) to be made for different non-structured directory locations, even across partitions. It allows configuration file control by having current configuration file pointing to different version or use type configuration files, depending on use case. text/html 2023-05-13T02:20:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.kptree.net/home_server:home_server_setup:other_services:nut?rev=1683944429&do=diff linux debian nut ups server NUT (Network UPS Tools) Setup I purchased my current main UPS the Powershield Commander RT PSCRT1100 / Voltronic Power Otima II 1.1K in 2014 and setup NUT about this time, including early conversion to systemd scripts. I notice the Techno Tim Network UPS Tools (NUT) Ultimate Guide late 2022 has a perhaps more modern take on this.