Add folder openshift_aws_nvme_disk_order_fix containing automation fix

openshift_aws_nvme_disk_order_fix/README.md

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+# README
+
+Description:
+
+It was discovered in an OpenShift Cluster deployed into AWS that the AWS NVME disk order changes after reboot in the Red Hat Enterprise Linux 7 operating system. This impacts docker's storage configuration negatively if you have multiple disks configured. This repo contains two basic playbooks that address the two core use cases.
+
+# Use Case 1: Pre Docker Storage Setup
+
+If you are configuring docker storage for the first time:
+
+ocp-aws-nvme-docker-preinstall.yml
+
+# Use Case 2: Post Docker storage setup
+
+If you have already configured docker storage, disks have changed order, and you need to fix dockers configuration in order to bring up the service: 
+
+ocp-aws-nvme-docker-preinstall-fix.yml 

openshift_aws_nvme_disk_order_fix/ocp-aws-nvme-docker-postinstall-fix.yml

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+---
+- name: Update /etc/sysconfig/docker-storage-setup configuration to use a persistent path from AWS
+  hosts: all
+  tasks:
+  - name: Determine disk used for PV in docker-vg volume group
+    shell: vgdisplay docker-vg -v | grep "PV Name" -A1 | awk '{print $3}' | sed -n '1p' | sed 's/.\{2\}$//'
+    register: UUID
+
+  - debug: msg={{ UUID.stdout }}
+
+  - name: Grab NVME Path from udevinfo info {{ UUID.stdout }}
+    shell: udevadm info {{ UUID.stdout }} | sed -n '3p' | sed 's/^.\{,14\}//'
+    register: NVME_PATH
+
+  - debug: msg={{ NVME_PATH.stdout }}
+
+  - name: Backup /etc/sysconfig/docker-storage-setup to /etc/sysconfig/docker-storage-setup.{{ ansible_date_time.date }}.{{ ansible_date_time.time }}
+    copy:
+      src: /etc/sysconfig/docker-storage-setup
+      dest: /etc/sysconfig/docker-storage-setup.{{ ansible_date_time.date }}.{{ ansible_date_time.time }}
+      remote_src: yes
+
+  - name: Update /etc/sysconfig/docker-storage-setup with Persistent Device Patch
+    lineinfile:
+      path: /etc/sysconfig/docker-storage-setup
+      regexp: '^DEVS'
+      line: 'DEVS=/dev/disk/by-id/{{ NVME_PATH.stdout }}'
+
+  - name: Remove Incorrrect Disk from Volume Group
+    shell: vgreduce --removemissing docker-vg
+
+  - name: Activate Volume Group
+    shell: lvchange -a y docker-vg

openshift_aws_nvme_disk_order_fix/ocp-aws-nvme-docker-preinstall.yml

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+---
+- name: Update /etc/sysconfig/docker-storage-setup configuration to use a persistent path from AWS
+  hosts: all
+  vars:
+    ocp_docker_storage_size: 151   # Define the size of the disk that you want to use for docker storage
+  tasks:
+
+  - name: Get disk for Docker Storage
+    shell: "lsblk | grep disk | grep {{ ocp_docker_storage_size }} |cut -f1 -d' '"
+    register: docker_device
+
+  - name: Grab NVME Path from udevinfo info {{ docker_device.stdout }}
+    shell: udevadm info /dev/{{ docker_device.stdout }} | sed -n '3p' | sed 's/^.\{,14\}//'
+    register: NVME_PATH
+
+  - name: Configure Docker Storage
+    copy:
+      dest: /etc/sysconfig/docker-storage-setup
+      content: |
+        DEVS="/dev/disk/by-id/{{ NVME_PATH.stdout }}"
+        VG=docker-vg
+
+  - name: Docker storage setup
+    command: docker-storage-setup
+
+  - name: Start and Enable docker
+    service:
+      name: docker
+      state: started
+      enabled: yes
+
+