diff --git a/nixos/doc/manual/installation/installing-nspawn-container.xml b/nixos/doc/manual/installation/installing-nspawn-container.xml new file mode 100644 index 000000000000..ae893c53c905 --- /dev/null +++ b/nixos/doc/manual/installation/installing-nspawn-container.xml @@ -0,0 +1,37 @@ +
+ Installing into a nspawn container + + + For installing a NixOS into a systemd nspawn container the NixOS installation tools are needed. + If you run another distribution than NixOS on your host, + please follow steps 1, 2, and 3. + + + + Create a NixOS configuration file /var/lib/machines/my-container/etc/nixos/configuration.nix. + It is important that the container root file system is under /var/lib/machines. + This is the standard location where machinectl will look for containers. + If you choose place the root into another location you need to start the container directly with systemd-nspawn. + The file needs to have at least following options enabled: + + = true; + = true; + + If your host uses systemd-networkd to configure the network, + you can also enable to use networkd default network configuration for your host and container. + + + + Install the container by running following command: + nixos-install --root /var/lib/machines/my-container \ + --no-channel-copy --no-root-passwd --no-bootloader + + + + Start the container by running following command: + machinectl start my-container + + +
diff --git a/nixos/doc/manual/installation/installing.xml b/nixos/doc/manual/installation/installing.xml index f1e1568c0349..270372022fac 100644 --- a/nixos/doc/manual/installation/installing.xml +++ b/nixos/doc/manual/installation/installing.xml @@ -563,5 +563,8 @@ Retype new UNIX password: *** + + + diff --git a/nixos/modules/installer/tools/nixos-install.sh b/nixos/modules/installer/tools/nixos-install.sh index 8685cb345e1e..be3b5c0687a6 100644 --- a/nixos/modules/installer/tools/nixos-install.sh +++ b/nixos/modules/installer/tools/nixos-install.sh @@ -132,8 +132,9 @@ if [[ -z $noBootLoader ]]; then echo "installing the boot loader..." # Grub needs an mtab. ln -sfn /proc/mounts $mountPoint/etc/mtab - NIXOS_INSTALL_BOOTLOADER=1 nixos-enter --root "$mountPoint" -- /run/current-system/bin/switch-to-configuration boot + export NIXOS_INSTALL_BOOTLOADER=1 fi +nixos-enter --root "$mountPoint" -- /run/current-system/bin/switch-to-configuration boot # Ask the user to set a root password, but only if the passwd command # exists (i.e. when mutable user accounts are enabled). diff --git a/nixos/modules/system/activation/activation-script.nix b/nixos/modules/system/activation/activation-script.nix index ddfd1af4a319..2f716f92c62e 100644 --- a/nixos/modules/system/activation/activation-script.nix +++ b/nixos/modules/system/activation/activation-script.nix @@ -184,7 +184,14 @@ in find /var/empty -mindepth 1 -delete chmod 0555 /var/empty chown root:root /var/empty + + ${ # reasons for not setting immutable flag: + # 1. flag is not changeable inside a container + # 2. systemd-nspawn can not perform chown in case of --private-users-chown + # then the owner is nobody and ssh will not start + optionalString (!config.boot.isContainer) '' ${pkgs.e2fsprogs}/bin/chattr -f +i /var/empty || true + ''} ''; system.activationScripts.usrbinenv = if config.environment.usrbinenv != null diff --git a/nixos/modules/virtualisation/container-config.nix b/nixos/modules/virtualisation/container-config.nix index 604fb8a75932..ca7f126c59f6 100644 --- a/nixos/modules/virtualisation/container-config.nix +++ b/nixos/modules/virtualisation/container-config.nix @@ -10,7 +10,7 @@ with lib; services.udisks2.enable = mkDefault false; powerManagement.enable = mkDefault false; - networking.useHostResolvConf = mkDefault true; + networking.useHostResolvConf = mkDefault (!config.services.resolved.enable); # Containers should be light-weight, so start sshd on demand. services.openssh.startWhenNeeded = mkDefault true; diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix index 5643da99e557..2c6c3a429707 100644 --- a/nixos/tests/all-tests.nix +++ b/nixos/tests/all-tests.nix @@ -262,6 +262,7 @@ in syncthing-relay = handleTest ./syncthing-relay.nix {}; systemd = handleTest ./systemd.nix {}; systemd-confinement = handleTest ./systemd-confinement.nix {}; + systemd-machinectl = handleTest ./systemd-machinectl.nix {}; systemd-timesyncd = handleTest ./systemd-timesyncd.nix {}; systemd-networkd-wireguard = handleTest ./systemd-networkd-wireguard.nix {}; pdns-recursor = handleTest ./pdns-recursor.nix {}; diff --git a/nixos/tests/systemd-machinectl.nix b/nixos/tests/systemd-machinectl.nix new file mode 100644 index 000000000000..091f855d043b --- /dev/null +++ b/nixos/tests/systemd-machinectl.nix @@ -0,0 +1,52 @@ +import ./make-test.nix (let + + container = { ... }: { + boot.isContainer = true; + + # use networkd to obtain systemd network setup + networking.useNetworkd = true; + + # systemd-nspawn expects /sbin/init + boot.loader.initScript.enable = true; + + imports = [ ../modules/profiles/minimal.nix ]; + }; + + containerSystem = (import ../lib/eval-config.nix { + modules = [ container ]; + }).config.system.build.toplevel; + + containerName = "container"; + containerRoot = "/var/lib/machines/${containerName}"; + +in { + name = "systemd-machinectl"; + + machine = { lib, ... }: { + # use networkd to obtain systemd network setup + networking.useNetworkd = true; + + # open DHCP server on interface to container + networking.firewall.trustedInterfaces = [ "ve-+" ]; + + # do not try to access cache.nixos.org + nix.binaryCaches = lib.mkForce []; + + virtualisation.pathsInNixDB = [ containerSystem ]; + }; + + testScript = '' + startAll; + + $machine->waitForUnit("default.target"); + $machine->succeed("mkdir -p ${containerRoot}"); + $machine->succeed("nixos-install --root ${containerRoot} --system ${containerSystem} --no-channel-copy --no-root-passwd --no-bootloader"); + + $machine->succeed("machinectl start ${containerName}"); + $machine->waitUntilSucceeds("systemctl -M ${containerName} is-active default.target"); + $machine->succeed("ping -n -c 1 ${containerName}"); + $machine->succeed("test `stat ${containerRoot}/var/empty -c %u%g` != 00"); + + $machine->succeed("machinectl stop ${containerName}"); + ''; +})