Brad FitzpatrickandBrad Fitzpatrick
bef2cd8088
The "vm" CI job ran a single test (TestRunUbuntu2404 from tstest/integration/vms) on a privileged self-hosted runner. Its coverage is nearly all redundant with the modern natlab vmtest suite, which boots real Ubuntu VMs and already exercises connectivity, kernel TUN, SSH, Taildrop, ACME, and OS DNS integration on GitHub-hosted runners. The two things it tested that natlab didn't are added back as natlab tests so the runner can be decommissioned: TestUbuntuSystemdUnit runs tailscaled via the stock systemd unit that Linux packages ship (cmd/tailscaled/tailscaled.service with tailscaled.defaults as its EnvironmentFile) instead of launching the binary directly, verifying the unit's directives and its Type=notify readiness handshake. TestDNSExtraRecordsSearchDomains verifies that control-plane DNS ExtraRecords and search domains are resolvable through the guest's OS resolver (libc to systemd-resolved to quad-100). Updates #13038 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: I8d0dfb8b8153289e7ca78f3af03dfece9497bfe8
57 lines
1.9 KiB
Go
57 lines
1.9 KiB
Go
// Copyright (c) Tailscale Inc & contributors
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// SPDX-License-Identifier: BSD-3-Clause
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package vmtest_test
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import (
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"fmt"
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"strings"
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"testing"
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"time"
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"tailscale.com/tailcfg"
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"tailscale.com/tstest"
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"tailscale.com/tstest/natlab/vmtest"
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"tailscale.com/tstest/natlab/vnet"
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"tailscale.com/types/dnstype"
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)
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// TestDNSExtraRecordsSearchDomains verifies that control-plane DNS config
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// makes it all the way into an Ubuntu guest's OS resolver: an ExtraRecords
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// entry ("extratest.record" → 1.2.3.4) resolves via libc (getent), and the
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// "record" search domain lets the bare name "extratest" resolve too. That
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// requires tailscaled to have plumbed MagicDNS routes and search domains
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// into systemd-resolved.
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func TestDNSExtraRecordsSearchDomains(t *testing.T) {
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env := vmtest.New(t, vmtest.ControlDNS("tailnet.test", &tailcfg.DNSConfig{
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Proxied: true,
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Domains: []string{"record"},
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Routes: map[string][]*dnstype.Resolver{"record": nil},
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ExtraRecords: []tailcfg.DNSRecord{
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{Name: "extratest.record", Type: "A", Value: "1.2.3.4"},
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},
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}))
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node := env.AddNode("node",
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env.AddNetwork("2.1.1.1", "192.168.1.1/24", vnet.EasyNAT),
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vmtest.OS(vmtest.Ubuntu2404))
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env.Start()
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for _, name := range []string{"extratest.record", "extratest"} {
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// Retry for a bit: tailscaled applies the DNS config to
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// systemd-resolved asynchronously after coming up.
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if err := tstest.WaitFor(30*time.Second, func() error {
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out, err := env.SSHExec(node, "getent hosts "+name)
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if err != nil {
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return fmt.Errorf("getent hosts %s: %v (%s)", name, err, strings.TrimSpace(out))
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}
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if !strings.Contains(out, "1.2.3.4") {
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return fmt.Errorf("getent hosts %s = %q, want it to contain 1.2.3.4", name, strings.TrimSpace(out))
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}
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return nil
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}); err != nil {
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out, _ := env.SSHExec(node, "resolvectl status; cat /etc/resolv.conf")
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t.Fatalf("%v\nresolver state:\n%s", err, out)
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}
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}
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}
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