74 lines
1.9 KiB
Markdown
74 lines
1.9 KiB
Markdown
# Cilium
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## Kube-proxy replacement with Cilium
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Cilium can run without kube-proxy by setting `cilium_kube_proxy_replacement`
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to `strict`.
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Without kube-proxy, cilium needs to know the address of the kube-apiserver
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and this must be set globally for all cilium components (agents and operators).
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Hence, in this configuration in Kubespray, Cilium will always contact
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the external loadbalancer (even from a node in the control plane)
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and if there is no external load balancer It will ignore any local load
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balancer deployed by Kubespray and **only contacts the first master**.
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## Choose Cilium version
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```yml
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cilium_version: v1.11.0
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```
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## Add variable to config
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Use following variables:
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Example:
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```yml
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cilium_config_extra_vars:
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enable-endpoint-routes: true
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```
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## Change Identity Allocation Mode
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Cilium assigns an identity for each endpoint. This identity is used to enforce basic connectivity between endpoints.
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Cilium currently supports two different identity allocation modes:
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- "crd" stores identities in kubernetes as CRDs (custom resource definition).
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- These can be queried with `kubectl get ciliumid`
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- "kvstore" stores identities in an etcd kvstore.
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## Install Cilium Hubble
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k8s-net-cilium.yml:
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```yml
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cilium_enable_hubble: true ## enable support hubble in cilium
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cilium_hubble_install: true ## install hubble-relay, hubble-ui
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cilium_hubble_tls_generate: true ## install hubble-certgen and generate certificates
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```
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To validate that Hubble UI is properly configured, set up a port forwarding for hubble-ui service:
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```shell script
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kubectl port-forward -n kube-system svc/hubble-ui 12000:80
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```
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and then open [http://localhost:12000/](http://localhost:12000/).
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## Hubble metrics
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```yml
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cilium_enable_hubble_metrics: true
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cilium_hubble_metrics:
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- dns
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- drop
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- tcp
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- flow
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- icmp
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- http
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```
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[More](https://docs.cilium.io/en/v1.9/operations/metrics/#hubble-exported-metrics)
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