"text":"Welcome to Trent Docs\n\n\nGit Repo For These Docs\n\n\nObviously, the commit history will reflect the time when these documents are written.\n\n\n\n\nNspawn Containers\n\n\nQuick Dirty Redis Nspawn Container on Arch Linux\n\n\nQuick Dirty Postgresql Nspawn Container on Arch Linux\n\n\nServe And Share Apps From Your Phone With Fdroid",
"text":"Obviously, the commit history will reflect the time when these documents are written. Nspawn Containers Quick Dirty Redis Nspawn Container on Arch Linux Quick Dirty Postgresql Nspawn Container on Arch Linux Serve And Share Apps From Your Phone With Fdroid",
"text":"Nspawn Containers\n\n\nThis Link For Arch Linux Wiki for Nspawn Containers\n\n\nCreate a FileSystem\n\n\ncd /var/lib/machines\n# create a directory\nmkdir <container>\n# use pacstrap to create a file system\npacstrap -i -c -d <container> base --ignore linux\n\n\n\n\nAt this point you might want to copy over some configs to save time later.\n\n\n\n\n/etc/locale.conf\n\n\n/root/.bashrc\n\n\n/etc/locale.gen\n\n\n\n\nFirst boot and create root password\n\n\nsystemd-nspawn -b -D <container>\npasswd\npoweroff\n# if you want to nat the container add *-n* flag\nsystemd-nspawn -b -D <container> -n\n# and to bind mount the package cache\nsystemd-nspawn -b -D <container> -n --bind=/var/cache/pacman/pkg\n\n\n\n\nNetworking\n\n\nOn Arch, assuming you have systemd-networkd and systemd-resolved\nset up correctly, networking from the host end of things should\njust work.\n\nHowever on Linode it does not. What does work on Linode is to create\na bridge interface. Two files for br0 will get the job done.\n\n\n# /etc/systemd/network/50-br0.netdev\n[NetDev]\nName=br0\nKind=bridge\n\n\n\n\n# /etc/systemd/network/50-br0.netdev\n[Match]\nName=br0\n\n[Network]\nAddress=10.0.55.1/24\nDHCPServer=yes\nIPMasquerade=yes\n\n\n\n\nNotice how the configuration file tells systemd-networkd to offer\nDHCP service and to perform masquerade. You can modify the \nsystemd-nspawn\n\ncommand to use the bridge interface. Every container attached to this bridge\nwill be on the same subnet and able to talk to each other.\n\n\n# first restart systemd-networkd to bring up the new bridge interface\nsystemctl restart systemd-networkd\n# and add --network-bridge=br0 to systemd-nspawn command\nsystemd-nspawn -b -D <container> --network-bridge=br0 --bind=/var/cache/pacman/pkg\n\n\n\n\nAutomatically Starting the Container\n\n\nThere are two ways to automate starting the container. You can override\n\nsystemd-nspawn@.service\n or create an \nnspawn\n file. \n\n\nFirst enable machines.target\n\n\n# to override the systemd-nspawn@.service file\ncp /lib/systemd/system/systemd-nspawn@.service /etc/systemd/system/systemd-nspawn@<container>.service\n\n\n\n\nEdit \n/etc/systemd/system/systemd-nspawn@<container>.service\n to add the \nsystemd-nspawn\n options\nyou want to the \nExecStart\n command.\n\n\nOr create \n/etc/systemd/nspawn/<container>.nspawn\n\n\n# /etc/systemd/nspawn/<container>.nspawn\nBind=/var/cache/pacman/pkg\n\n[Network]\nBridge=br0\n\n\n\n\n# in either case\nsystemctl start/enable systemd-nspawn@<container>\n# to get a shell\nmachinectl shell <container>\n# and then to get an environment\nbash\n\n\n\n\nInitial Configuration Inside The Container\n\n\n# set time zone if you don't want UTC\ntimedatectl set-timezone <timezone>\n# enable ntp, networktime\ntimedatectl set-ntp 1\n# enable networking from inside the container\nsystemctl enable systemd-networkd\nsystemctl start systemd-networkd\nsystemctl enable systemd-resolved\nsystemctl start systemd-resolved\nrm /etc/resolv.conf \nln -s /run/systemd/resolve/resolv.conf /etc/\n# ping google\nping -c 3 google.com\n\n\n\n\nIf you want to change the locale",
"text":"cd /var/lib/machines\n# create a directory\nmkdir <container>\n# use pacstrap to create a file system\npacstrap -i -c -d <container> base --ignore linux At this point you might want to copy over some configs to save time later. /etc/locale.conf /root/.bashrc /etc/locale.gen",
"text":"systemd-nspawn -b -D <container>\npasswd\npoweroff\n# if you want to nat the container add *-n* flag\nsystemd-nspawn -b -D <container> -n\n# and to bind mount the package cache\nsystemd-nspawn -b -D <container> -n --bind=/var/cache/pacman/pkg",
"title":"First boot and create root password"
},
{
"location":"/nspawn/#networking",
"text":"On Arch, assuming you have systemd-networkd and systemd-resolved\nset up correctly, networking from the host end of things should\njust work. \nHowever on Linode it does not. What does work on Linode is to create\na bridge interface. Two files for br0 will get the job done. # /etc/systemd/network/50-br0.netdev\n[NetDev]\nName=br0\nKind=bridge # /etc/systemd/network/50-br0.netdev\n[Match]\nName=br0\n\n[Network]\nAddress=10.0.55.1/24\nDHCPServer=yes\nIPMasquerade=yes Notice how the configuration file tells systemd-networkd to offer\nDHCP service and to perform masquerade. You can modify the systemd-nspawn \ncommand to use the bridge interface. Every container attached to this bridge\nwill be on the same subnet and able to talk to each other. # first restart systemd-networkd to bring up the new bridge interface\nsystemctl restart systemd-networkd\n# and add --network-bridge=br0 to systemd-nspawn command\nsystemd-nspawn -b -D <container> --network-bridge=br0 --bind=/var/cache/pacman/pkg",
"text":"There are two ways to automate starting the container. You can override systemd-nspawn@.service or create an nspawn file. First enable machines.target # to override the systemd-nspawn@.service file\ncp /lib/systemd/system/systemd-nspawn@.service /etc/systemd/system/systemd-nspawn@<container>.service Edit /etc/systemd/system/systemd-nspawn@<container>.service to add the systemd-nspawn options\nyou want to the ExecStart command. Or create /etc/systemd/nspawn/<container>.nspawn # /etc/systemd/nspawn/<container>.nspawn\nBind=/var/cache/pacman/pkg\n\n[Network]\nBridge=br0 # in either case\nsystemctl start/enable systemd-nspawn@<container>\n# to get a shell\nmachinectl shell <container>\n# and then to get an environment\nbash",
"text":"# set time zone if you don't want UTC\ntimedatectl set-timezone <timezone>\n# enable ntp, networktime\ntimedatectl set-ntp 1\n# enable networking from inside the container\nsystemctl enable systemd-networkd\nsystemctl start systemd-networkd\nsystemctl enable systemd-resolved\nsystemctl start systemd-resolved\nrm /etc/resolv.conf \nln -s /run/systemd/resolve/resolv.conf /etc/\n# ping google\nping -c 3 google.com If you want to change the locale",
"text":"Quick Dirty Redis Nspawn Container on Arch Linux\n\n\nRefer to the \nNspawn\n page for setting up the nspawn container.\n\n\nOnce you have the container running, it seems all you have to do to get\nthings working in a container subnet is to change the bind address.\n\n\n# /etc/redis.conf\n# bind 127.0.0.1\nbind 0.0.0.0\n\n\n\n\nyou can nmap port 6379, be sure to restart redis\n\n\nAgain I would refer you to the Arch Wiki",
"title":"Quick Dirty Redis Nspawn Container on Arch Linux"
"text":"Refer to the Nspawn page for setting up the nspawn container. Once you have the container running, it seems all you have to do to get\nthings working in a container subnet is to change the bind address. # /etc/redis.conf\n# bind 127.0.0.1\nbind 0.0.0.0 you can nmap port 6379, be sure to restart redis Again I would refer you to the Arch Wiki",
"title":"Quick Dirty Redis Nspawn Container on Arch Linux"
"text":"Serve And Share Apps From Your Phone With Fdroid\n\n\nFind The Menu Item for \nSwap apps\n\n\nStep 3 you are born on third base\n\n\nOpen fdroid, and navigate to the menu by touching three dots in upper right hand corner of the screen. Select \nSwap apps\n.\n\n\n\n\nStep 4\n\n\nOn the next screen toggle on \nVisible via Wi-Fi\n\n\n\n\nStep 5\n\n\nAt the bottom of the screen select \nSCAN QR CODE\n\n\n\n\nStep 6\n\n\nAt the next screen \nChoose Apps\n you want to xerve I mean serve and then touch the -> right arrow to proceed\n\n\n\n\nStep 7\n\n\nTouch the -> right arrow again, do it.\n\n\n\n\nOcho\n\n\nTouch the -> right arrow until you are coming here\n\n\n\nNotice you can use either a qr code or a local url, so grab one of your other phones.\n\n\nPrivacy Friendly Qr Scanner\n appears to be a good Qr scanner,\nbut of course you can key in the url by hand too.\n\n\nStep Nine\n\n\nOn your other phone open fdroid, navigate to menu by selecting the 3 dots in the upper right hand corner and choose \nRepositories\n\n\n\n\nStep Ten\n\n\nToggle all the current repos off and then if you want to key in the new local repo url by hand touch the + plus in the upper right hand corner\n\n\n\n\nStep Eleven A\n\n\nAfter touching the + plus button in \nStep Ten\n on phone two, you can fill in the url address that corresponds to the photo in \nOcho\n\n\n\n\nStep Twelve A\n\n\nIf you prefer not to key in the url by hand, on phone two touch the\nhome button and then open your qr-scanning application and scan the\nqr code on phone one, as seen in photo \nOcho\n. The qr-scanning\napp will direct you to open fdroid, and your result will be the same as\nthe photo in \nStep Eleven A\n\n\nStep Thirteen\n\n\nOn phone two you can now download and install apps and updates from phone one, and the download speed will be much faster than from the internet.",
"title":"Serve And Share Apps From Your Phone With Fdroid"
"text":"Notice you can use either a qr code or a local url, so grab one of your other phones. Privacy Friendly Qr Scanner appears to be a good Qr scanner,\nbut of course you can key in the url by hand too.",
"title":"Touch the -> right arrow until you are coming here"
"title":"Toggle all the current repos off and then if you want to key in the new local repo url by hand touch the + plus in the upper right hand corner"
"text":"If you prefer not to key in the url by hand, on phone two touch the\nhome button and then open your qr-scanning application and scan the\nqr code on phone one, as seen in photo Ocho . The qr-scanning\napp will direct you to open fdroid, and your result will be the same as\nthe photo in Step Eleven A",
"title":"On phone two you can now download and install apps and updates from phone one, and the download speed will be much faster than from the internet."
