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make the multi-node vm tests a bit more reliable

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without these changes the tests will very repeatably (although not very
reliably) wedge in our runs. the ssh command starts, opens a sessions,
does something, the session closes again, but the test does not move on.
adding *just* the redirect and not the unit waits is not sufficient
either, it needs both. this feels like a bug in the nixos testing
framework somewhere, but digging that far is not in the cards right now.

Change-Id: Idab577b83a36cc4899bb5ffbb3d9adc04e83e51c
This commit is contained in:
eldritch horrors 2024-03-09 11:01:28 +01:00
parent 609a8e0d94
commit 34fb7a7e9d
4 changed files with 30 additions and 12 deletions
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10
tests/nixos/nix-copy-closure.nix
View file

@ -40,6 +40,11 @@ in {
"${pkgs.openssh}/bin/ssh-keygen", "-t", "ed25519", "-f", "key", "-N", ""
], capture_output=True, check=True)
server.succeed("systemctl start network-online.target")
client.succeed("systemctl start network-online.target")
server.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
client.succeed("mkdir -m 700 /root/.ssh")
client.copy_from_host("key", "/root/.ssh/id_ed25519")
client.succeed("chmod 600 /root/.ssh/id_ed25519")
@ -47,9 +52,8 @@ in {
# Install the SSH key on the server.
server.succeed("mkdir -m 700 /root/.ssh")
server.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
server.wait_for_unit("sshd")
client.wait_for_unit("network.target")
client.succeed(f"ssh -o StrictHostKeyChecking=no {server.name} 'echo hello world'")
server.wait_for_unit("sshd.service")
client.succeed(f"ssh -o StrictHostKeyChecking=no {server.name} 'echo hello world' >&2")
# Copy the closure of package A from the client to the server.
server.fail("nix-store --check-validity ${pkgA}")

10
tests/nixos/nix-copy.nix
View file

@ -54,8 +54,12 @@ in {
start_all()
server.wait_for_unit("sshd")
client.wait_for_unit("network.target")
server.succeed("systemctl start network-online.target")
client.succeed("systemctl start network-online.target")
server.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
server.wait_for_unit("sshd.service")
client.wait_for_unit("getty@tty1.service")
# Either the prompt: ]#
# or an OCR misreading of it: 1#
@ -82,7 +86,7 @@ in {
# Install the SSH key on the server.
server.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
server.succeed("systemctl restart sshd")
client.succeed(f"ssh -o StrictHostKeyChecking=no {server.name} 'echo hello world'")
client.succeed(f"ssh -o StrictHostKeyChecking=no {server.name} 'echo hello world' >&2")
client.succeed(f"ssh -O check {server.name}")
client.succeed(f"ssh -O exit {server.name}")
client.fail(f"ssh -O check {server.name}")

10
tests/nixos/remote-builds-ssh-ng.nix
View file

@ -78,6 +78,11 @@ in
start_all()
builder.succeed("systemctl start network-online.target")
client.succeed("systemctl start network-online.target")
builder.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
# Create an SSH key on the client.
subprocess.run([
"${hostPkgs.openssh}/bin/ssh-keygen", "-t", "ed25519", "-f", "key", "-N", ""
@ -87,11 +92,10 @@ in
client.succeed("chmod 600 /root/.ssh/id_ed25519")
# Install the SSH key on the builder.
client.wait_for_unit("network.target")
builder.succeed("mkdir -p -m 700 /root/.ssh")
builder.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
builder.wait_for_unit("sshd")
client.succeed(f"ssh -o StrictHostKeyChecking=no {builder.name} 'echo hello world'")
builder.wait_for_unit("sshd.service")
client.succeed(f"ssh -o StrictHostKeyChecking=no {builder.name} 'echo hello world' >&2")
# Perform a build
out = client.succeed("nix-build ${expr nodes.client 1} 2> build-output")

12
tests/nixos/remote-builds.nix
View file

@ -85,6 +85,13 @@ in
start_all()
builder1.succeed("systemctl start network-online.target")
builder2.succeed("systemctl start network-online.target")
client.succeed("systemctl start network-online.target")
builder1.wait_for_unit("network-online.target")
builder2.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
# Create an SSH key on the client.
subprocess.run([
"${hostPkgs.openssh}/bin/ssh-keygen", "-t", "ed25519", "-f", "key", "-N", ""
@ -94,12 +101,11 @@ in
client.succeed("chmod 600 /root/.ssh/id_ed25519")
# Install the SSH key on the builders.
client.wait_for_unit("network.target")
for builder in [builder1, builder2]:
builder.succeed("mkdir -p -m 700 /root/.ssh")
builder.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
builder.wait_for_unit("sshd")
client.succeed(f"ssh -o StrictHostKeyChecking=no {builder.name} 'echo hello world'")
builder.wait_for_unit("sshd.service")
client.succeed(f"ssh -o StrictHostKeyChecking=no {builder.name} 'echo hello world' >&2")
# Perform a build and check that it was performed on the builder.
out = client.succeed(