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calico: cilium: use localhost lb by default on kube-proxy replacement (#9718)

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This commit removes the variable `use_localhost_as_kubeapi_loadbalancer`
and rather detects that we are in a situation where we can use the
localhost apiserver loadbalancer (meaning that we use the localhost load
balancer and that the same ports are used for both the load balancer and
the kube-apiserver).

This also cleanups the calico code to use `kube_apiserver_global_endpoint`
rather than implementing the same logic all over again.

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>
This commit is contained in:
Arthur Outhenin-Chalandre
2023-03-07 13:28:36 +01:00
committed by GitHub
parent 3a675393dc
commit 82f68ca395
6 changed files with 8 additions and 29 deletions
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8
docs/cilium.md
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@@ -6,11 +6,9 @@ Cilium can run without kube-proxy by setting `cilium_kube_proxy_replacement`
to `strict`.
Without kube-proxy, cilium needs to know the address of the kube-apiserver
and this must be set globally for all cilium components (agents and operators).
Hence, in this configuration in Kubespray, Cilium will always contact
the external loadbalancer (even from a node in the control plane)
and if there is no external load balancer It will ignore any local load
balancer deployed by Kubespray and **only contacts the first master**.
and this must be set globally for all Cilium components (agents and operators).
We can only use the localhost apiserver loadbalancer in this mode
whenever it uses the same port as the kube-apiserver (by default it does).
## Cilium Operator