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nixos/cloud-init: fix hostname and resolvconf configuration
- Fix hostname configuration on proxmox, which uses "hostname" in user-data instead of "local-hostname" in meta-data. - Allow setting resolv.conf through cloud-init - Add tests for new changes - Add timeouts to make tests fail faster
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@ -81,7 +81,8 @@ in
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- write-files
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- growpart
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- resizefs
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- update_etc_hosts
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- update_hostname
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- resolv_conf
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- ca-certs
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- rsyslog
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- users-groups
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@ -125,6 +125,7 @@ in {
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cjdns = handleTest ./cjdns.nix {};
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clickhouse = handleTest ./clickhouse.nix {};
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cloud-init = handleTest ./cloud-init.nix {};
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cloud-init-hostname = handleTest ./cloud-init-hostname.nix {};
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cntr = handleTestOn ["aarch64-linux" "x86_64-linux"] ./cntr.nix {};
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cockroachdb = handleTestOn ["x86_64-linux"] ./cockroachdb.nix {};
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collectd = handleTest ./collectd.nix {};
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46
nixos/tests/cloud-init-hostname.nix
Normal file
46
nixos/tests/cloud-init-hostname.nix
Normal file
@ -0,0 +1,46 @@
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{ system ? builtins.currentSystem,
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config ? {},
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pkgs ? import ../.. { inherit system config; }
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}:
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with import ../lib/testing-python.nix { inherit system pkgs; };
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with pkgs.lib;
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let
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# Hostname can also be set through "hostname" in user-data.
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# This is how proxmox configures hostname through cloud-init.
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metadataDrive = pkgs.stdenv.mkDerivation {
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name = "metadata";
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buildCommand = ''
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mkdir -p $out/iso
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cat << EOF > $out/iso/user-data
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#cloud-config
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hostname: testhostname
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EOF
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cat << EOF > $out/iso/meta-data
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instance-id: iid-local02
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EOF
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${pkgs.cdrkit}/bin/genisoimage -volid cidata -joliet -rock -o $out/metadata.iso $out/iso
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'';
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};
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in makeTest {
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name = "cloud-init-hostname";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ lewo illustris ];
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};
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nodes.machine2 = { ... }: {
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virtualisation.qemu.options = [ "-cdrom" "${metadataDrive}/metadata.iso" ];
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services.cloud-init.enable = true;
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networking.hostName = "";
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};
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testScript = ''
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unnamed.wait_for_unit("cloud-final.service")
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assert "testhostname" in unnamed.succeed("hostname")
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'';
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}
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@ -49,19 +49,17 @@ let
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gateway: '12.34.56.9'
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- type: nameserver
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address:
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- '8.8.8.8'
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- '6.7.8.9'
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search:
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- 'example.com'
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EOF
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${pkgs.cdrkit}/bin/genisoimage -volid cidata -joliet -rock -o $out/metadata.iso $out/iso
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'';
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};
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in makeTest {
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name = "cloud-init";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ lewo ];
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broken = true; # almost always times out after spending many hours
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};
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meta.maintainers = with pkgs.lib.maintainers; [ lewo illustris ];
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nodes.machine = { ... }:
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{
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virtualisation.qemu.options = [ "-cdrom" "${metadataDrive}/metadata.iso" ];
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@ -90,21 +88,27 @@ in makeTest {
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# we should be able to log in as the root user, as well as the created nixos user
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unnamed.succeed(
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"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil root@localhost 'true'"
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"timeout 10 ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil root@localhost 'true'"
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)
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unnamed.succeed(
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"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'true'"
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"timeout 10 ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'true'"
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)
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# test changing hostname via cloud-init worked
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assert (
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unnamed.succeed(
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"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'hostname'"
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"timeout 10 ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentityFile=~/.ssh/id_snakeoil nixos@localhost 'hostname'"
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).strip()
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== "test"
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)
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# check IP and route configs
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assert "default via 12.34.56.9 dev eth0 proto static" in unnamed.succeed("ip route")
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assert "12.34.56.0/24 dev eth0 proto kernel scope link src 12.34.56.78" in unnamed.succeed("ip route")
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# check nameserver and search configs
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assert "6.7.8.9" in unnamed.succeed("resolvectl status")
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assert "example.com" in unnamed.succeed("resolvectl status")
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'';
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}
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