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|
---
# This playbook coverts docker to go from loopback to direct-lvm (the Red Hat recommended way to run docker)
# in AWS. This adds an additional EBS volume and creates the Volume Group on this EBS volume to use.
#
# To run:
# 1. Source your AWS credentials (make sure it's the corresponding AWS account) into your environment
# export AWS_ACCESS_KEY_ID='XXXXX'
# export AWS_SECRET_ACCESS_KEY='XXXXXX'
#
# 2. run the playbook:
# ansible-playbook -e 'cli_tag_name=<tag-name>' -e "cli_volume_size=30" docker_loopback_to_direct_lvm.yml
#
# Example:
# ansible-playbook -e 'cli_tag_name=ops-master-12345' -e "cli_volume_size=30" docker_loopback_to_direct_lvm.yml
#
# Notes:
# * By default this will do a 30GB volume.
# * iops are calculated by Disk Size * 30. e.g ( 30GB * 30) = 900 iops
# * This will remove /var/lib/docker!
# * You may need to re-deploy docker images after this is run (like monitoring)
#
- name: Fix docker to have a provisioned iops drive
hosts: "tag_Name_{{ cli_tag_name }}"
user: root
connection: ssh
gather_facts: no
vars:
cli_volume_type: gp2
cli_volume_size: 30
pre_tasks:
- fail:
msg: "This playbook requires {{item}} to be set."
when: "{{ item }} is not defined or {{ item }} == ''"
with_items:
- cli_tag_name
- cli_volume_size
- debug:
var: hosts
- name: start docker
service:
name: docker
state: started
- name: Determine if loopback
shell: docker info | grep 'Data file:.*loop'
register: loop_device_check
ignore_errors: yes
- debug:
var: loop_device_check
- name: fail if we don't detect loopback
fail:
msg: loopback not detected! Please investigate manually.
when: loop_device_check.rc == 1
- name: stop zagg client monitoring container
service:
name: oso-rhel7-zagg-client
state: stopped
ignore_errors: yes
- name: stop pcp client monitoring container
service:
name: oso-f22-host-monitoring
state: stopped
ignore_errors: yes
- name: stop docker
service:
name: docker
state: stopped
- name: delete /var/lib/docker
command: rm -rf /var/lib/docker
- name: remove /var/lib/docker
command: rm -rf /var/lib/docker
- name: check to see if /dev/xvdb exists
command: test -e /dev/xvdb
register: xvdb_check
ignore_errors: yes
- debug: var=xvdb_check
- name: fail if /dev/xvdb already exists
fail:
msg: /dev/xvdb already exists. Please investigate
when: xvdb_check.rc == 0
- name: Create a volume and attach it
delegate_to: localhost
ec2_vol:
state: present
instance: "{{ ec2_id }}"
region: "{{ ec2_region }}"
volume_size: "{{ cli_volume_size | default(30, True)}}"
volume_type: "{{ cli_volume_type }}"
device_name: /dev/xvdb
register: vol
- debug: var=vol
- name: tag the vol with a name
delegate_to: localhost
ec2_tag: region={{ ec2_region }} resource={{ vol.volume_id }}
args:
tags:
Name: "{{ ec2_tag_Name }}"
clusterid: "{{ ec2_tag_clusterid }}"
register: voltags
- name: Wait for volume to attach
pause:
seconds: 30
- name: copy the docker-storage-setup config file
copy:
src: docker-storage-setup
dest: /etc/sysconfig/docker-storage-setup
owner: root
group: root
mode: 0664
- name: docker storage setup
command: docker-storage-setup
register: setup_output
- debug: var=setup_output
- name: start docker
command: systemctl start docker.service
register: dockerstart
- debug: var=dockerstart
|
