35ecef2c6d
Allows one or more directories to be mounted as a read-only file system. This makes it convenient to run volatile containers that do not retain application state.
79 lines
3.2 KiB
Nix
79 lines
3.2 KiB
Nix
# Test for NixOS' container support.
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import ./make-test.nix ({ pkgs, ...} : {
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name = "containers-bridge";
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meta = with pkgs.stdenv.lib.maintainers; {
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maintainers = [ ckampka ];
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};
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machine =
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{ config, pkgs, ... }:
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{ imports = [ ../modules/installer/cd-dvd/channel.nix ];
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virtualisation.writableStore = true;
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virtualisation.memorySize = 768;
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containers.tmpfs =
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{
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autoStart = true;
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tmpfs = [
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# Mount var as a tmpfs
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"/var"
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# Add a nested mount inside a tmpfs
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"/var/log"
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# Add a tmpfs on a path that does not exist
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"/some/random/path"
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];
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config = { };
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};
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virtualisation.pathsInNixDB = [ pkgs.stdenv ];
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};
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testScript =
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''
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$machine->waitForUnit("default.target");
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$machine->succeed("nixos-container list") =~ /tmpfs/ or die;
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# Start the tmpfs container.
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#$machine->succeed("nixos-container status tmpfs") =~ /up/ or die;
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# Verify that /var is mounted as a tmpfs
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#$machine->succeed("nixos-container run tmpfs -- systemctl status var.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
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$machine->succeed("nixos-container run tmpfs -- mountpoint -q /var 2>/dev/null");
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# Verify that /var/log is mounted as a tmpfs
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$machine->succeed("nixos-container run tmpfs -- systemctl status var-log.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
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$machine->succeed("nixos-container run tmpfs -- mountpoint -q /var/log 2>/dev/null");
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# Verify that /some/random/path is mounted as a tmpfs
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$machine->succeed("nixos-container run tmpfs -- systemctl status some-random-path.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
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$machine->succeed("nixos-container run tmpfs -- mountpoint -q /some/random/path 2>/dev/null");
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# Verify that files created in the container in a non-tmpfs directory are visible on the host.
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# This establishes legitimacy for the following tests
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$machine->succeed("nixos-container run tmpfs -- touch /root/test.file 2>/dev/null");
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$machine->succeed("nixos-container run tmpfs -- ls -l /root | grep -q test.file 2>/dev/null");
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$machine->succeed("test -e /var/lib/containers/tmpfs/root/test.file");
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# Verify that /some/random/path is writable and that files created there
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# are not in the hosts container dir but in the tmpfs
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$machine->succeed("nixos-container run tmpfs -- touch /some/random/path/test.file 2>/dev/null");
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$machine->succeed("nixos-container run tmpfs -- test -e /some/random/path/test.file 2>/dev/null");
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$machine->fail("test -e /var/lib/containers/tmpfs/some/random/path/test.file");
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# Verify that files created in the hosts container dir in a path where a tmpfs file system has been mounted
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# are not visible to the container as the do not exist in the tmpfs
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$machine->succeed("touch /var/lib/containers/tmpfs/var/test.file");
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$machine->succeed("test -e /var/lib/containers/tmpfs/var/test.file");
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$machine->succeed("ls -l /var/lib/containers/tmpfs/var/ | grep -q test.file 2>/dev/null");
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$machine->fail("nixos-container run tmpfs -- ls -l /var | grep -q test.file 2>/dev/null");
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'';
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})
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