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authorMatt Woodson <mwoodson@redhat.com>2015-09-29 11:16:25 -0400
committerMatt Woodson <mwoodson@redhat.com>2015-09-29 11:20:40 -0400
commit2a4b5b7322c8b0c8e84aae43d1ff411259bf9b61 (patch)
treef24decf37b105ccecc978ed788e72b2da05a2fe7
parent7f1db7b49c344ae5aa62bc779590e9baa45647e6 (diff)
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added the grow_docker_vg adhoc playbook
-rw-r--r--playbooks/adhoc/grow_docker_vg/filter_plugins/oo_filters.py41
-rw-r--r--playbooks/adhoc/grow_docker_vg/grow_docker_vg.yml204
2 files changed, 245 insertions, 0 deletions
diff --git a/playbooks/adhoc/grow_docker_vg/filter_plugins/oo_filters.py b/playbooks/adhoc/grow_docker_vg/filter_plugins/oo_filters.py
new file mode 100644
index 000000000..d0264cde9
--- /dev/null
+++ b/playbooks/adhoc/grow_docker_vg/filter_plugins/oo_filters.py
@@ -0,0 +1,41 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# vim: expandtab:tabstop=4:shiftwidth=4
+'''
+Custom filters for use in openshift-ansible
+'''
+
+import pdb
+
+
+class FilterModule(object):
+ ''' Custom ansible filters '''
+
+ @staticmethod
+ def oo_pdb(arg):
+ ''' This pops you into a pdb instance where arg is the data passed in
+ from the filter.
+ Ex: "{{ hostvars | oo_pdb }}"
+ '''
+ pdb.set_trace()
+ return arg
+
+ @staticmethod
+ def translate_volume_name(volumes, target_volume):
+ '''
+ This filter matches a device string /dev/sdX to /dev/xvdX
+ It will then return the AWS volume ID
+ '''
+ for vol in volumes:
+ translated_name = vol["attachment_set"]["device"].replace("/dev/sd", "/dev/xvd")
+ if target_volume.startswith(translated_name):
+ return vol["id"]
+
+ return None
+
+
+ def filters(self):
+ ''' returns a mapping of filters to methods '''
+ return {
+ "translate_volume_name": self.translate_volume_name,
+ }
diff --git a/playbooks/adhoc/grow_docker_vg/grow_docker_vg.yml b/playbooks/adhoc/grow_docker_vg/grow_docker_vg.yml
new file mode 100644
index 000000000..a88553ac0
--- /dev/null
+++ b/playbooks/adhoc/grow_docker_vg/grow_docker_vg.yml
@@ -0,0 +1,204 @@
+---
+# This playbook grows the docker VG on a node by:
+# * add a new volume
+# * add volume to the existing VG.
+# * pv move to the new volume.
+# * remove old volume
+# * detach volume
+# * mark old volume in AWS with "REMOVE ME" tag
+# * grow docker LVM to 90% of the VG
+#
+# 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>' grow_docker_vg.yml
+#
+# Example:
+# ansible-playbook -e 'cli_tag_name=ops-compute-12345' grow_docker_vg.yml
+#
+# Notes:
+# * By default this will do a 55GB GP2 volume. The can be overidden with the "-e 'cli_volume_size=100'" variable
+# * This does a GP2 by default. Support for Provisioned IOPS has not been added
+# * This will assign the new volume to /dev/xvdc. This is not variablized, yet.
+# * This can be done with NO downtime on the host
+#
+
+- name: Grow the docker volume group
+ hosts: "tag_Name_{{ cli_tag_name }}"
+ user: root
+ connection: ssh
+ gather_facts: no
+
+ vars:
+ cli_volume_type: gp2
+ cli_volume_size: 55
+# cli_volume_iops: "{{ 30 * cli_volume_size }}"
+
+ 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 Storage Driver (docker info) is devicemapper
+ shell: docker info | grep 'Storage Driver:.*devicemapper'
+ register: device_mapper_check
+ ignore_errors: yes
+
+ - debug:
+ var: device_mapper_check
+
+ - name: fail if we don't detect devicemapper
+ fail:
+ msg: The "Storage Driver" in "docker info" is not set to "devicemapper"! Please investigate manually.
+ when: device_mapper_check.rc == 1
+
+ # docker-storage-setup creates a docker-pool as the lvm. I am using docker-pool lvm to test
+ # and find the volume group.
+ - name: Attempt to find the Volume Group that docker is using
+ shell: lvs | grep docker-pool | awk '{print $2}'
+ register: docker_vg_name
+ ignore_errors: yes
+
+ - debug:
+ var: docker_vg_name
+
+ - name: fail if we don't find a docker volume group
+ fail:
+ msg: Unable to find docker volume group. Please investigate manually.
+ when: docker_vg_name.stdout_lines|length != 1
+
+ # docker-storage-setup creates a docker-pool as the lvm. I am using docker-pool lvm to test
+ # and find the physical volume.
+ - name: Attempt to find the Phyisical Volume that docker is using
+ shell: "pvs | grep {{ docker_vg_name.stdout }} | awk '{print $1}'"
+ register: docker_pv_name
+ ignore_errors: yes
+
+ - debug:
+ var: docker_pv_name
+
+ - name: fail if we don't find a docker physical volume
+ fail:
+ msg: Unable to find docker physical volume. Please investigate manually.
+ when: docker_pv_name.stdout_lines|length != 1
+
+
+ - name: get list of volumes from AWS
+ delegate_to: localhost
+ ec2_vol:
+ state: list
+ instance: "{{ ec2_id }}"
+ region: "{{ ec2_region }}"
+ register: attached_volumes
+
+ - debug: var=attached_volumes
+
+ - name: get volume id of current docker volume
+ set_fact:
+ old_docker_volume_id: "{{ attached_volumes.volumes | translate_volume_name(docker_pv_name.stdout) }}"
+
+ - debug: var=old_docker_volume_id
+
+ - name: check to see if /dev/xvdc exists
+ command: test -e /dev/xvdc
+ register: xvdc_check
+ ignore_errors: yes
+
+ - debug: var=xvdc_check
+
+ - name: fail if /dev/xvdc already exists
+ fail:
+ msg: /dev/xvdc already exists. Please investigate
+ when: xvdc_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/xvdc
+ register: create_volume
+
+ - debug: var=create_volume
+
+ - name: Fail when problems creating volumes and attaching
+ fail:
+ msg: "Failed to create or attach volume msg: {{ create_volume.msg }}"
+ when: create_volume.msg is defined
+
+ - name: tag the vol with a name
+ delegate_to: localhost
+ ec2_tag: region={{ ec2_region }} resource={{ create_volume.volume_id }}
+ args:
+ tags:
+ Name: "{{ ec2_tag_Name }}"
+ env: "{{ ec2_tag_environment }}"
+ register: voltags
+
+ - name: check for attached drive
+ command: test -b /dev/xvdc
+ register: attachment_check
+ until: attachment_check.rc == 0
+ retries: 30
+ delay: 2
+
+ - name: partition the new drive and make it lvm
+ command: parted /dev/xvdc --script -- mklabel msdos mkpart primary 0% 100% set 1 lvm
+
+ - name: pvcreate /dev/xvdc
+ command: pvcreate /dev/xvdc1
+
+ - name: Extend the docker volume group
+ command: vgextend "{{ docker_vg_name.stdout }}" /dev/xvdc1
+
+ - name: pvmove onto new volume
+ command: "pvmove {{ docker_pv_name.stdout }} /dev/xvdc1"
+ async: 3600
+ poll: 10
+
+ - name: Remove the old docker drive from the volume group
+ command: "vgreduce {{ docker_vg_name.stdout }} {{ docker_pv_name.stdout }}"
+
+ - name: Remove the pv from the old drive
+ command: "pvremove {{ docker_pv_name.stdout }}"
+
+ - name: Extend the docker lvm
+ command: "lvextend -l '90%VG' /dev/{{ docker_vg_name.stdout }}/docker-pool"
+
+ - name: detach old docker volume
+ delegate_to: localhost
+ ec2_vol:
+ region: "{{ ec2_region }}"
+ id: "{{ old_docker_volume_id }}"
+ instance: None
+
+ - name: tag the old vol valid label
+ delegate_to: localhost
+ ec2_tag: region={{ ec2_region }} resource={{old_docker_volume_id}}
+ args:
+ tags:
+ Name: "{{ ec2_tag_Name }} REMOVE ME"
+ register: voltags
+
+ - name: Update the /etc/sysconfig/docker-storage-setup with new device
+ lineinfile:
+ dest: /etc/sysconfig/docker-storage-setup
+ regexp: ^DEVS=
+ line: DEVS=/dev/xvdc