Add Calico CNI option (#414)

* Add Tigera Operator/Calico CNI option

Small tweak to reduce delta from head

Set calico option to be disabled by default

Add rescue blocks in case updating existing

Refactor items and update comments

Refactor and consolidate calico.yml into block

Refactor to use template for Calico CRs

Revert use_calico to false

Template blockSize

Align default cidr in template with all.yml sample

Apply upstream version tags

Revert to current ver tags. Upstream's don't work.

Update template address detection

Add Tigera Operator/Calico CNI option

* Add calico-apiserver check

* Add eBPF dataplane option

* Add kube svc endpoint configmap when ebpf enabled

* Add /etc/cni/net.d to reset task

* Refactor based on comments

* Add molecule scenario

* Fix lint

---------

Co-authored-by: Techno Tim <timothystewart6@gmail.com>

inventory/sample/group_vars/all.yml

@@ -10,6 +10,12 @@ system_timezone: "Your/Timezone"
 # interface which will be used for flannel
 flannel_iface: "eth0"
 
+# uncomment calico_iface to use tigera operator/calico cni instead of flannel https://docs.tigera.io/calico/latest/about
+# calico_iface: "eth0"
+calico_ebpf: false           # use eBPF dataplane instead of iptables
+calico_cidr: "10.52.0.0/16"  # calico cluster pod cidr pool
+calico_tag: "v3.27.0"        # calico version tag
+
 # apiserver_endpoint is virtual ip-address which will be configured on each master
 apiserver_endpoint: "192.168.30.222"
 
@@ -20,23 +26,30 @@ k3s_token: "some-SUPER-DEDEUPER-secret-password"
 # The IP on which the node is reachable in the cluster.
 # Here, a sensible default is provided, you can still override
 # it for each of your hosts, though.
-k3s_node_ip: '{{ ansible_facts[flannel_iface]["ipv4"]["address"] }}'
+k3s_node_ip: "{{ ansible_facts[(calico_iface | default(flannel_iface))]['ipv4']['address'] }}"
 
 # Disable the taint manually by setting: k3s_master_taint = false
 k3s_master_taint: "{{ true if groups['node'] | default([]) | length >= 1 else false }}"
 
 # these arguments are recommended for servers as well as agents:
 extra_args: >-
-  --flannel-iface={{ flannel_iface }}
+  {{ '--flannel-iface=' + flannel_iface if calico_iface is not defined else '' }}
   --node-ip={{ k3s_node_ip }}
 
 # change these to your liking, the only required are: --disable servicelb, --tls-san {{ apiserver_endpoint }}
+# the contents of the if block is also required if using calico
 extra_server_args: >-
   {{ extra_args }}
   {{ '--node-taint node-role.kubernetes.io/master=true:NoSchedule' if k3s_master_taint else '' }}
+  {% if calico_iface is defined %}
+  --flannel-backend=none
+  --disable-network-policy
+  --cluster-cidr={{ calico_cidr | default('10.52.0.0/16') }}
+  {% endif %}
   --tls-san {{ apiserver_endpoint }}
   --disable servicelb
   --disable traefik
+
 extra_agent_args: >-
   {{ extra_args }}