The loadbalancer should only fail over to the default server if all other server have failed, and it should force fail-back to a preferred server as soon as one passes health checks.
The loadbalancer tests have been improved to ensure that this occurs.
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
If health checks are failing for all servers, make a second pass through the server list with health-checks ignored before returning failure
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
* 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>
* Fixes issue where proxy support only honored server address via K3S_URL, not CLI or config.
* Fixes crash when agent proxy is enabled, but proxy env vars do not return a proxy URL for the server address (server URL is in NO_PROXY list).
* Adds tests
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Brad Davidson