Fix idempotence test and add config for older MySQL versions.

Author: geerlingguy

.travis.yml

@@ -44,8 +44,10 @@ script:
   - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/${playbook}'
 
   # Test role idempotence.
+  - idempotence=$(mktemp)
+  - sudo docker exec "$(cat ${container_id})" ansible-playbook /etc/ansible/roles/role_under_test/tests/${playbook} | tee -a ${idempotence}
   - >
-    sudo docker exec "$(cat ${container_id})" ansible-playbook /etc/ansible/roles/role_under_test/tests/${playbook}
+    tail ${idempotence}
     | grep -q 'changed=0.*failed=0'
     && (echo 'Idempotence test: pass' && exit 0)
     || (echo 'Idempotence test: fail' && exit 1)

templates/my.cnf.j2

@@ -82,7 +82,9 @@ max_connections = {{ mysql_max_connections }}
 wait_timeout = {{ mysql_wait_timeout }}
 
 # InnoDB settings.
+{% if mysql_supports_innodb_large_prefix %}
 innodb_large_prefix = {{ mysql_innodb_large_prefix }}
+{% endif %}
 innodb_file_format = {{ mysql_innodb_file_format }}
 innodb_file_per_table = {{ mysql_innodb_file_per_table }}
 innodb_buffer_pool_size = {{ mysql_innodb_buffer_pool_size }}

vars/Debian.yml

@@ -7,3 +7,4 @@ __mysql_slow_query_log_file: /var/log/mysql/mysql-slow.log
 mysql_config_file: /etc/mysql/my.cnf
 mysql_config_include_dir: /etc/mysql/conf.d
 mysql_socket: /var/run/mysqld/mysqld.sock
+mysql_supports_innodb_large_prefix: false

vars/RedHat-6.yml

@@ -7,3 +7,4 @@ __mysql_slow_query_log_file: /var/log/mysql-slow.log
 mysql_config_file: /etc/my.cnf
 mysql_config_include_dir: /etc/my.cnf.d
 mysql_socket: /var/lib/mysql/mysql.sock
+mysql_supports_innodb_large_prefix: false

vars/RedHat-7.yml

@@ -13,3 +13,4 @@ mysql_pid_file: /var/run/mariadb/mariadb.pid
 mysql_config_file: /etc/my.cnf
 mysql_config_include_dir: /etc/my.cnf.d
 mysql_socket: /var/lib/mysql/mysql.sock
+mysql_supports_innodb_large_prefix: false