[calico] switch default iptables backend detection to Auto (#8429)

inventory/sample/group_vars/k8s_cluster/k8s-net-calico.yml

@@ -59,7 +59,7 @@
 # calico_datastore: "kdd"
 
 # Choose Calico iptables backend: "Legacy", "Auto" or "NFT"
-# calico_iptables_backend: "Legacy"
+# calico_iptables_backend: "Auto"
 
 # Use typha (only with kdd)
 # typha_enabled: false

roles/network_plugin/calico/defaults/main.yml

@@ -78,7 +78,7 @@ calico_healthhost: "localhost"
 calico_iptables_lock_timeout_secs: 10
 
 # Choose Calico iptables backend: "Legacy", "Auto" or "NFT" (FELIX_IPTABLESBACKEND)
-calico_iptables_backend: "Legacy"
+calico_iptables_backend: "Auto"
 
 # Calico Wireguard support
 calico_wireguard_enabled: false

tests/files/packet_almalinux8-calico-nodelocaldns-secondary.yml

@@ -7,6 +7,3 @@ vm_memory: 3072Mi
 # Kubespray settings
 enable_nodelocaldns_secondary: true
 loadbalancer_apiserver_type: haproxy
-
-# required
-calico_iptables_backend: "Auto"

tests/files/packet_almalinux8-calico.yml

@@ -9,6 +9,3 @@ metrics_server_enabled: true
 dashboard_namespace: "kube-dashboard"
 dashboard_enabled: true
 loadbalancer_apiserver_type: haproxy
-
-# required
-calico_iptables_backend: "Auto"

tests/files/packet_almalinux8-crio.yml

@@ -6,6 +6,3 @@ mode: default
 # Kubespray settings
 container_manager: crio
 auto_renew_certificates: true
-
-# required
-calico_iptables_backend: "Auto"

tests/files/packet_almalinux8-docker.yml

@@ -4,9 +4,6 @@ cloud_image: almalinux-8
 mode: default
 vm_memory: 3072Mi
 
-# required
-calico_iptables_backend: "Auto"
-
 # Use docker
 container_manager: docker
 etcd_deployment_type: docker