kubespray/roles/network_plugin/cilium/templates/cilium-config.yml.j2

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: cilium-config
  namespace: kube-system
data:
  # This etcd-config contains the etcd endpoints of your cluster. If you use
  # TLS please make sure you follow the tutorial in https://cilium.link/etcd-config
  etcd-config: |-
    ---
    endpoints:
{% for ip_addr in etcd_access_addresses.split(',') %}
      - {{ ip_addr }}
{% endfor %}

    # In case you want to use TLS in etcd, uncomment the 'ca-file' line
    # and create a kubernetes secret by following the tutorial in
    # https://cilium.link/etcd-config
    ca-file: "{{ cilium_cert_dir }}/ca_cert.crt"

    # In case you want client to server authentication, uncomment the following
    # lines and create a kubernetes secret by following the tutorial in
    # https://cilium.link/etcd-config
    key-file: "{{ cilium_cert_dir }}/key.pem"
    cert-file: "{{ cilium_cert_dir }}/cert.crt"

  # kvstore
  # https://docs.cilium.io/en/latest/cmdref/kvstore/
  kvstore: etcd
  kvstore-opt: '{"etcd.config": "/var/lib/etcd-config/etcd.config"}'

  # If you want metrics enabled in all of your Cilium agents, set the port for
  # which the Cilium agents will have their metrics exposed.
  # This option deprecates the "prometheus-serve-addr" in the
  # "cilium-metrics-config" ConfigMap
  # NOTE that this will open the port on ALL nodes where Cilium pods are
  # scheduled.
{% if cilium_enable_prometheus %}
  prometheus-serve-addr: ":9090"
{% endif %}

  # If you want to run cilium in debug mode change this value to true
  debug: "{{ cilium_debug }}"
  enable-ipv4: "{{ cilium_enable_ipv4 }}"
  enable-ipv6: "{{ cilium_enable_ipv6 }}"
  # If a serious issue occurs during Cilium startup, this
  # invasive option may be set to true to remove all persistent
  # state. Endpoints will not be restored using knowledge from a
  # prior Cilium run, so they may receive new IP addresses upon
  # restart. This also triggers clean-cilium-bpf-state.
  clean-cilium-state: "false"
  # If you want to clean cilium BPF state, set this to true;
  # Removes all BPF maps from the filesystem. Upon restart,
  # endpoints are restored with the same IP addresses, however
  # any ongoing connections may be disrupted briefly.
  # Loadbalancing decisions will be reset, so any ongoing
  # connections via a service may be loadbalanced to a different
  # backend after restart.
  clean-cilium-bpf-state: "false"

  # Users who wish to specify their own custom CNI configuration file must set
  # custom-cni-conf to "true", otherwise Cilium may overwrite the configuration.
  custom-cni-conf: "false"

  # If you want cilium monitor to aggregate tracing for packets, set this level
  # to "low", "medium", or "maximum". The higher the level, the less packets
  # that will be seen in monitor output.
  monitor-aggregation: "{{ cilium_monitor_aggregation }}"

  # ct-global-max-entries-* specifies the maximum number of connections
  # supported across all endpoints, split by protocol: tcp or other. One pair
  # of maps uses these values for IPv4 connections, and another pair of maps
  # use these values for IPv6 connections.
  #
  # If these values are modified, then during the next Cilium startup the
  # tracking of ongoing connections may be disrupted. This may lead to brief
  # policy drops or a change in loadbalancing decisions for a connection.
  #
  # For users upgrading from Cilium 1.2 or earlier, to minimize disruption
  # during the upgrade process, comment out these options.
  bpf-ct-global-tcp-max: "524288"
  bpf-ct-global-any-max: "262144"

  # Pre-allocation of map entries allows per-packet latency to be reduced, at
  # the expense of up-front memory allocation for the entries in the maps. The
  # default value below will minimize memory usage in the default installation;
  # users who are sensitive to latency may consider setting this to "true".
  #
  # This option was introduced in Cilium 1.4. Cilium 1.3 and earlier ignore
  # this option and behave as though it is set to "true".
  #
  # If this value is modified, then during the next Cilium startup the restore
  # of existing endpoints and tracking of ongoing connections may be disrupted.
  # This may lead to policy drops or a change in loadbalancing decisions for a
  # connection for some time. Endpoints may need to be recreated to restore
  # connectivity.
  #
  # If this option is set to "false" during an upgrade from 1.3 or earlier to
  # 1.4 or later, then it may cause one-time disruptions during the upgrade.
  preallocate-bpf-maps: "{{cilium_preallocate_bpf_maps}}"

  # Regular expression matching compatible Istio sidecar istio-proxy
  # container image names
  sidecar-istio-proxy-image: "cilium/istio_proxy"

  # Encapsulation mode for communication between nodes
  # Possible values:
  #   - disabled
  #   - vxlan (default)
  #   - geneve
  tunnel: "{{ cilium_tunnel_mode }}"

  # Name of the cluster. Only relevant when building a mesh of clusters.
  cluster-name: default

  # Unique ID of the cluster. Must be unique across all conneted clusters and
  # in the range of 1 and 255. Only relevant when building a mesh of clusters.
  #cluster-id: 1

  # DNS Polling periodically issues a DNS lookup for each `matchName` from
  # cilium-agent. The result is used to regenerate endpoint policy.
  # DNS lookups are repeated with an interval of 5 seconds, and are made for
  # A(IPv4) and AAAA(IPv6) addresses. Should a lookup fail, the most recent IP
  # data is used instead. An IP change will trigger a regeneration of the Cilium
  # policy for each endpoint and increment the per cilium-agent policy
  # repository revision.
  #
  # This option is disabled by default starting from version 1.4.x in favor
  # of a more powerful DNS proxy-based implementation, see [0] for details.
  # Enable this option if you want to use FQDN policies but do not want to use
  # the DNS proxy.
  #
  # To ease upgrade, users may opt to set this option to "true".
  # Otherwise please refer to the Upgrade Guide [1] which explains how to
  # prepare policy rules for upgrade.
  #
  # [0] http://docs.cilium.io/en/stable/policy/language/#dns-based
  # [1] http://docs.cilium.io/en/stable/install/upgrade/#changes-that-may-require-action
  tofqdns-enable-poller: "{{cilium_tofqdns_enable_poller}}"

  # wait-bpf-mount makes init container wait until bpf filesystem is mounted
  wait-bpf-mount: "false"

  # Enable legacy services (prior v1.5) to prevent from terminating existing
  # connections with services when upgrading Cilium from < v1.5 to v1.5.
  enable-legacy-services: "{{cilium_enable_legacy_services}}"

  kube-proxy-replacement: "{{ cilium_kube_proxy_replacement }}"

  native-routing-cidr: "{{ cilium_native_routing_cidr }}"
  auto-direct-node-routes: "{{ cilium_auto_direct_node_routes }}"

  # Hubble settings
{% if cilium_enable_hubble %}
  enable-hubble: "true"
  hubble-metrics: "{{ cilium_hubble_metrics }}"
  hubble-listen-address: ":4244"
{% if cilium_enable_hubble_metrics %}
  hubble-metrics-server: ":9091"
{% endif %}
{% endif %}

  # IPsec based transparent encryption between nodes
{% if cilium_ipsec_enabled %}
  enable-ipsec: "true"
  ipsec-key-file: /etc/ipsec/keys
  encrypt-node: "false"
{% endif %}

  # IPAM settings
{% if cilium_version | regex_replace('v') is version('1.9', '>=') %}
  ipam: "{{ cilium_ipam_mode }}"
{% endif %}