stackforge/tripleo-ansible
Code Issues Proposed changes

Fixing Galera Status checks for Upstream

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We had a defect based on logic from the original development of the
playbook that needed to be corrected, as register replaces variables
even if the step does not run, so a set_fact check must be used to
store the information if required to be continued onwards for
later conditional checks.

Change-Id: Id93667ffd8a2546ed767cf89a03549b1c491835c
This commit is contained in:
Julia Kreger 2014-11-20 17:11:11 -05:00
parent 9bda4589a0
commit 83d26aa930
2 changed files with 9 additions and 4 deletions
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5
playbooks/galera_status.yml
View File

@ -17,6 +17,8 @@
shell: mysql --defaults-file=/mnt/state/root/metadata.my.cnf --socket /var/run/mysqld/mysqld.sock -N -e "SHOW STATUS LIKE 'wsrep_cluster_size'"|cut -f2
when: helion is not defined
register: wsrep_cluster_size
- set_fact: galera_cluster_size="{{wsrep_cluster_size.stdout}}"
when: helion is not defined
- name: Fetch Galera sync status from MySQL - Helion
sudo: yes
command: mysql --defaults-file=/mnt/state/root/metadata.my.cnf -N -e "SHOW STATUS LIKE 'wsrep_local_state'"
@ -31,3 +33,6 @@
shell: mysql --defaults-file=/mnt/state/root/metadata.my.cnf -N -e "SHOW STATUS LIKE 'wsrep_cluster_size'"|cut -f2
when: helion is defined
register: wsrep_cluster_size
- set_fact: galera_cluster_size="{{wsrep_cluster_size.stdout}}"
when: helion is defined

8
playbooks/update_cloud.yml
View File

@ -150,14 +150,14 @@
when: instance_status == "ACTIVE"
- name: Stop MySQL under normal circumstances
include: stop_mysql.yml
when: instance_status == "ACTIVE" and galera_status == "Synced" and wsrep_cluster_size.stdout != "1"
when: instance_status == "ACTIVE" and galera_status == "Synced" and galera_cluster_size != "1"
- name: Stop MySQL if last node in cluster and single_controller flag has been set.
include: stop_mysql.yml
when: instance_status == "ACTIVE" and single_controller is defined and galera_status == "Synced" and wsrep_cluster_size.stdout == "1"
when: instance_status == "ACTIVE" and single_controller is defined and galera_status == "Synced" and galera_cluster_size == "1"
- fail: msg="Galera Replication is out of sync - cannot safely proceed"
when: single_controller is not defined and instance_status == "ACTIVE" and galera_status == "Out of Sync"
- fail: msg="Galera Replication - Node appears to be the last node in a cluster - cannot safely proceed unless overriden via single_controller setting - See README.rst"
when: instance_status == "ACTIVE" and single_controller is not defined and wsrep_cluster_size.stdout == "1"
when: instance_status == "ACTIVE" and single_controller is not defined and galera_cluster_size == "1"
- name: Stop RabbitMQ Application for shutdown
command: rabbitmqctl stop_app
- name: Remove the node from the RabbitMQ cluster
@ -182,7 +182,7 @@
- fail: msg="Galera Replication on controller Management is out of sync - cannot safely proceed"
when: instance_status == "ACTIVE" and single_controller is not defined and galera_status != "Synced"
- fail: msg="Galera Replication on controller Management - cannot safely proceed as another MySQL cluster node is active."
when: instance_status == "ACTIVE" and single_controller is not defined and wsrep_cluster_size.stdout != "1"
when: instance_status == "ACTIVE" and single_controller is not defined and galera_cluster_size != "1"
- include: stop_mysql.yml
when: instance_status == "ACTIVE"
- service: name=rabbitmq-server enabled=no state=stopped