* Adds support for health-checking loadbalancer servers. If a
health-check fails when dialing, all existing connections to the
server will be closed.
* Wires up a remotedialer tunnel connectivity check as the health check
for supervisor/apiserver connections.
* Wires up a simple ping request to the supervisor port as the health
check for etcd connections.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Write the extra metadata both locally and to S3. These files are placed such that they will not be used by older versions of K3s that do not make use of them.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Consolidate NewCertCommands
* Add support for user defined new token
* Add E2E testlets
Signed-off-by: Derek Nola <derek.nola@suse.com>
* Ensure agent token also changes
Signed-off-by: Derek Nola <derek.nola@suse.com>
Wire up a node watch to collect addresses of server nodes, to prevent adding unauthorized SANs to the dynamiclistener cert.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Several places in the code used a 5-second retry loop to wait on
Runtime.Core to be set. This caused a race condition where OnChange
handlers could be added after the Wrangler shared informers were already
started. When this happened, the handlers were never called because the
shared informers they relied upon were not started.
Fix that by requiring anything that waits on Runtime.Core to run from a
cluster controller startup hook that is guaranteed to be called before
the shared informers are started, instead of just firing it off in a
goroutine that retries until it is set.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Turns out etcd-only nodes were never running **any** of the controllers,
so allowing multiple controllers didn't really fix things.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Allow bootstrapping with kubeadm bootstrap token strings or existing
Kubelet certs. This allows agents to join the cluster using kubeadm
bootstrap tokens, as created with the `k3s token create` command.
When the token expires or is deleted, agents can successfully restart by
authenticating with their kubelet certificate via node authentication.
If the token is gone and the node is deleted from the cluster, node auth
will fail and they will be prevented from rejoining the cluster until
provided with a valid token.
Servers still must be bootstrapped with the static cluster token, as
they will need to know it to decrypt the bootstrap data.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Add EncryptSecrets to Critical Control Args
* use deep comparison to extract differences
Signed-off-by: Derek Nola <derek.nola@suse.com>
Signed-off-by: Derek Nola <derek.nola@suse.com>
Problem:
Using defer inside a loop can lead to resource leaks
Solution:
Judge newer file in the separate function
Signed-off-by: iyear <ljyngup@gmail.com>
Since #4438 removed 2-way sync and treats any changed+newer files on disk as an error, we no longer need to determine if files are newer on disk/db or if there is a conflicting mix of both. Any changed+newer file is an error, unless we're doing a cluster reset in which case everything is unconditionally replaced.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Properly skip restoring bootstrap data for files that don't have a path
set because the feature that would set it isn't enabled.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Bump etcd to v3.5.4-k3s1
* Fix issue with datastore corruption on cluster-reset
* Disable unnecessary components during cluster reset
Disable control-plane components and the tunnel setup during
cluster-reset, even when not doing a restore. This reduces the amount of
log clutter during cluster reset/restore, making any errors encountered
more obvious.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Fixes issue with secrets-encrypt rotate not having any etcd endpoints
available on nodes without a local etcd server.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Reuse the existing etcd library code to start up the temporary etcd
server for bootstrap reconcile. This allows us to do proper
health-checking of the datastore on startup, including handling of
alarms.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Several types contained redundant references to ControlRuntime data. Switch to consistently accessing this via config.Runtime instead.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
If you don't explicitly close the etcd client when you're done with it,
the GRPC connection hangs around in the background. Normally this is
harmelss, but in the case of the temporary etcd we start up on 2399 to
reconcile bootstrap data, the client will start logging errors
afterwards when the server goes away.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Enable reconcilation on secondary servers
Signed-off-by: Derek Nola <derek.nola@suse.com>
* Remove unused code
Signed-off-by: Derek Nola <derek.nola@suse.com>
* Attempt to reconcile with datastore first
Signed-off-by: Derek Nola <derek.nola@suse.com>
* Added warning on failure
Signed-off-by: Derek Nola <derek.nola@suse.com>
* Update warning
Signed-off-by: Derek Nola <derek.nola@suse.com>
* golangci-lint fix
Signed-off-by: Derek Nola <derek.nola@suse.com>
Brad Davidson