We should be reading from the hijacked bufio.ReaderWriter instead of
directly from the net.Conn. There is a race condition where the
underlying http handler may consume bytes from the hijacked request
stream, if it comes in the same packet as the CONNECT header. These
bytes are left in the buffered reader, which we were not using. This was
causing us to occasionally drop a few bytes from the start of the
tunneled connection's client data stream.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
If CCM and ServiceLB are both disabled, don't run the cloud-controller-manager at all;
this should provide the same CLI flag behavior as previous releases, and not create
problems when users disable the CCM but still want ServiceLB.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Requires tweaking existing method signature to allow specifying whether or not IPv6 addresses should be return URL-safe.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
cadvisor still doesn't pull stats via CRI yet, so we have to continue to use the deprecated arg.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Use same kubelet-preferred-address-types setting as RKE2 to improve reliability of the egress selector when using a HTTP proxy. Also, use BindAddressOrLoopback to ensure that the correct supervisor address is used when --bind-address is set.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* Move startup hooks wg into a runtime pointer, check before notifying systemd
* Switch default systemd notification to server
* Add 1 sec delay to allow etcd to write to disk
Signed-off-by: Derek Nola <derek.nola@suse.com>
The control-plane context handles requests outside the cluster and
should not be sent to the proxy.
In agent mode, we don't watch pods and just direct-dial any request for
a non-node address, which is the original behavior.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Watching pods appears to be the most reliable way to ensure that the
proxy routes and authorizes connections.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
This reverts commit aa9065749c.
Setting dual-stack node-ip does not work when --cloud-provider is set
to anything, including 'external'. Just set node-ip to the first IP, and
let the cloud provider add the other address.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
The cloud-provider arg is deprecated and cannot be set to anything other than external, but must still be used or node addresses are not set properly.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Reduces code complexity a bit and ensures we don't have to handle closed watch channels on our own
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Before this change, kube-router was always assuming that IPv4 is
enabled, which is not the case in IPv6-only clusters. To enable network
policies in IPv6-only, we need to explicitly let kube-router know when
to disable IPv4.
Signed-off-by: Michal Rostecki <vadorovsky@gmail.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>
Problem:
Specifying extra arguments for the API server for example is not supported as
the arguments get stored in a map before being passed to the API server.
Solution:
Updated the GetArgs function to store the arguments in a map that can have
multiple values. Some more logic is added so that repeated extra arguments
retain their order when sorted whilst overall the arguments can still be
sorted for improved readability when logged.
Support has been added for prefixing and suffixing default argument values
by using -= and += when specifying extra arguments.
Signed-off-by: Terry Cain <terry@terrys-home.co.uk>
This is required to make the websocket tunnel server functional on
etcd-only nodes, and will save some code on the RKE2 side once pulled
through.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Closing idle connections isn't guaranteed to close out a pooled connection to a
loadbalancer endpoint that has been removed. Instead, ensure that requests used
to wait for the apiserver to become ready aren't reused.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
