Members' etcd speaks TLS to peers and clients with a certificate from the
cluster's authority and asks clients for one; Patroni reaches it with the
member's certificate and serves its API over TLS. A running plain-HTTP
cluster is moved with Patroni paused, so PostgreSQL serves throughout:
Patroni's lease-free keys are carried over to the new etcd.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Patroni's REST API accepted changes from anyone on port 8008, and
PostgreSQL ran with sslmode=disable between machines. Setup now keeps a
fourth secret for the API (carried to members of older clusters), issues
each member a certificate from the cluster's authority, writes
restapi.authentication into each member's config and reloads it, and
turns ssl on with hostssl remote rules through an authenticated PATCH of
the shared configuration. The DSN becomes sslmode=verify-full against the
authority's certificate whenever the cluster has TLS, so a control plane
without the authority's key reconnects too. server add authenticates its
PATCH and lets the new control plane in by hostssl. Tried on the e2e
cluster: unauthenticated PATCH 401, plaintext refused, replication
streaming, the control plane on verify-full.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
server add gives another machine this llmgw, a certificate, the
configuration and store address, lets it into the store through Patroni, and
starts it; --vip keeps a floating address on the leader with keepalived,
following a new /leader endpoint. Nodes learn every control plane from the
leader and notice a dead one by HTTP/2 ping instead of after the kernel's
fifteen minutes. The setup, console, node and init screens are drawn full
screen in one frame: title bar, sidebar, bordered panel, key bar, dialogs.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
