IBM Cloud DirectLink support

Signed-off-by: Prajyot Parab <[email protected]>

examples/powervs_config_vars.yaml

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+---
+
+ibm_cloud_dl_endpoint_net_cidr: ""  #IBM Cloud DirectLink endpoint network cidr eg. 10.0.0.0/8
+ibm_cloud_http_proxy: ""            #IBM Cloud http/squid proxy eg. http://10.166.13.64:3128
+ocp_node_net_gw: ""                 #OCP node private network gateway eg. 192.168.25.1
+ocp_node_net_intf: ""               #OCP node private network interface name eg. env3
+

playbooks/powervs_config.yaml

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+---
+- name: PowerVS specific configuration
+  hosts: bastion
+  roles:
+  - powervs-nodes-config
+

playbooks/roles/powervs-nodes-config/README.md

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+powervs-nodes-config: PowerVS OCP Cluster Nodes Configuration
+=========
+
+This module will enable connectivity between OCP nodes in PowerVS and IBM Cloud infrastructure over DirectLink.
+
+Requirements
+------------
+
+ - A working OCP 4.X cluster
+ - OCP cluster private network advertised over IBM Cloud DirectLink.
+ - Running proxy service on classic infrastructure.
+
+Role Variables
+--------------
+
+| Variable                       | Required | Default | Comments                                                      |
+|--------------------------------|----------|---------|---------------------------------------------------------------|
+| ibm_cloud_dl_endpoint_net_cidr | yes      |         | IBM Cloud DirectLink endpoint network cidr eg. 10.0.0.0/8     |
+| ibm_cloud_http_proxy           | yes      |         | IBM Cloud http/squid proxy url eg. `http://10.166.13.64:3128` |
+| ocp_node_net_gw                | yes      |         | OCP node private network gateway eg. 192.168.25.1             |
+| ocp_node_net_intf              | yes      |         | OCP node private network interface name eg. env3              |
+
+Dependencies
+------------
+
+ - None
+
+Example Playbook
+----------------
+
+    - name: PowerVS specific nodes configuration
+      hosts: bastion
+      roles:
+      - powervs-nodes-config
+
+License
+-------
+
+See LICENCE.txt
+
+Author Information
+------------------
+
+Prajyot Parab ([email protected])
+

playbooks/roles/powervs-nodes-config/tasks/main.yaml

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+---
+# tasks file for powervs nodes configuration
+
+- name: Get Connection UUID
+  shell: |
+    nmcli -g uuid,device con | grep {{ ocp_node_net_intf }} | awk -F: '{ print $1 }'
+  register: con_uuid
+
+- name: Add route to connection
+  shell: |
+    nmcli connection modify {{ con_uuid.stdout }} +ipv4.routes "{{ ibm_cloud_dl_endpoint_net_cidr }} {{ ocp_node_net_gw }}"
+    nmcli connection up {{ con_uuid.stdout }}
+
+- name: Retrieve proxy details
+  shell: |
+    oc get proxy/cluster -o template --template {{'{{'}}.spec.noProxy{{'}}'}}
+  register: proxy
+  run_once: true
+
+- name: Switch to classic infrastructure proxy
+  shell: |
+    oc patch proxy/cluster --type merge --patch '{"spec":{"httpProxy": "{{ ibm_cloud_http_proxy }}", "httpsProxy": "{{ ibm_cloud_http_proxy }}", "noProxy": "{{ proxy.stdout }},{{ ibm_cloud_dl_endpoint_net_cidr }}" }}'
+  run_once: true
+