A node may publish only its own _acme-challenge TXT value; any other
request is rejected before the provider is called. Answers once all
authoritative nameservers serve the value; 503 while shutting down.
Fixes#2137Fixes#1921Fixes#2527
Both gate tailscale cert and serve HTTPS on the client; httpsEnabled
follows, as in Tailscale. No certificate when an operator extra record
sits at or below the name: a wildcard would cover it.
Updates #2137
Updates #1921
"Foo" and "foo" could share one DNS name; collisions now ignore case.
A rename never resent the node its own DNS config, so CertDomains lagged.
Updates #2137
dns.challenge.provider builds a libdns provider at load, so configtest
catches typos. dns.certificates gates node certs; zone defaults to base_domain.
Updates #2137
Exact appends and deletes; values go 10m after last use or on Close.
Limits per node, one lock for provider writes. Waits for every
authoritative NS and holds a new value until the CA cache has expired.
Updates #2137
The SetPolicy API handler calls State.SetPolicy, which already rebuilds the peer map when the policy changed, and then ReloadPolicy, which rebuilt it again even when nothing changed. So every policy write built the peer map twice.
ReloadPolicy now rebuilds only when the policy really changed. A test checks one build per changed write and none for an unchanged reload.
Part of #3549
With a via grant in the policy, ViaRoutesForPeer still resolved every
grant's sources and destinations up front. Non-via grants are only read
once a via grant has matched the peer, which is rare (the peer must
advertise a covered route), and destinations only for grants whose
sources match the viewer. Resolve each grant on first use instead.
BenchmarkViaRoutesForPeer, mean per peer (Apple M3 Pro):
policy nodes before after
via-mixed 100 9.5us 2.1us
via-mixed 1000 69.0us 11.6us
via 1000 8.1us 8.6us
ViaRoutesForPeer runs for every peer of every map response. Before it
looks at Via, it converts every ACL to grants and resolves each grant's
sources and destinations against the whole node set. Only via grants
can add to the result and ACLs never carry via, so without a via grant
all of that work was discarded. On large tailnets it dominated map
generation. Return early instead.
BenchmarkViaRoutesForPeer, mean per peer (Apple M3 Pro):
policy nodes before after
global 1000 21.8us 9ns, 0 allocs
self 1000 45.0us 9ns, 0 allocs
via 1000 8.1us unchanged
via-mixed 1000 69.0us unchanged
Fixes#3512
The client picks the check rule by login user; the server took the
first rule for the node pair, so a root login could get a 12h
localpart period instead of "always", or be approved after its rule
was removed while another user's rule remained. Hold URLs now carry
the concrete user: tailssh never expanded the encoded $LOCAL_USER.
Updates #3508
Kristoffer Dalby
Serhii Matsyshyn
github-actions[bot]
Martin -nexus- Mlynář
Kristoffer Dalby
LuoChen
Jonas Schwartz
Dan Cunningham