If the port wanted by the client load balancer is in TIME_WAIT, startup
will fail. Set SO_REUSEPORT so that it can be listened on again
immediately.
The configurable Listen call wants a context, so plumb that through as
well.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Always use static ports for the load-balancers
This fixes an issue where RKE2 kube-proxy daemonset pods were failing to
communicate with the apiserver when RKE2 was restarted because the
load-balancer used a different port every time it started up.
This also changes the apiserver load-balancer port to be 1 below the
supervisor port instead of 1 above it. This makes the apiserver port
consistent at 6443 across servers and agents on RKE2.
Additional fixes below were required to successfully test and use this change
on etcd-only nodes.
* Actually add lb-server-port flag to CLI
* Fix nil pointer when starting server with --disable-etcd but no --server
* Don't try to use full URI as initial load-balancer endpoint
* Fix etcd load-balancer pool updates
* Update dynamiclistener to fix cert updates on etcd-only nodes
* Handle recursive initial server URL in load balancer
* Don't run the deploy controller on etcd-only nodes
* Add functionality for etcd snapshot/restore to and from S3 compatible backends.
* Update etcd restore functionality to extract and write certificates and configs from snapshot.
* Set etcd timeouts using values from k8s instead of etcdctl
Fix for one of the warnings from #2303
* Use etcd zap logger instead of deprecated capsnlog
Fix for one of the warnings from #2303
* Remove member self-promotion code paths
* Add learner promotion tracking code
* Fix RaftAppliedIndex progress check
* Remove ErrGRPCKeyNotFound check
This is not used by v3 API - it just returns a response with 0 KVs.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
According to @galal-hussein this is dead code that was probably brought
over from Kine. I certainly couldn't figure out what it is supposed to
be doing.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
We should ignore --token and --server if the managed database is initialized,
just like we ignore --cluster-init. If the user wants to join a new
cluster, or rejoin a cluster after --cluster-reset, they need to delete
the database. This a cleaner way to prevent deadlocking on quorum loss,
and removes the requirement that the target of the --server argument
must be online before already joined nodes can start.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
This attempts to update logging statements to make them consistent
through out the code base. It also adds additional context to messages
where possible, simplifies messages, and updates level where necessary.
* Add etcd members as learners
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>
* Ignore errors in promote member
Signed-off-by: galal-hussein <hussein.galal.ahmed.11@gmail.com>
This will watch for the following kube-apiserver-arg variables and apply
them to the k3s kube-apiserver https listener.
--kube-apiserver-arg=tls-cipher-suites=XXXXXXX
--kube-apiserver-arg=tls-min-version=XXXXXXX
In k3s today the kubernetes API and the /v1-k3s API are combined into
one http server. In rke2 we are running unmodified, non-embedded Kubernetes
and as such it is preferred to run k8s and the /v1-k3s API on different
ports. The /v1-k3s API port is called the SupervisorPort in the code.
To support this separation of ports a new shim was added on the client in
then pkg/agent/proxy package that will launch two load balancers instead
of just one load balancer. One load balancer for 6443 and the other
for 9345 (which is the supervisor port).
Brad Davidson