Running mariadb-tzinfo-to-sql with Ansible
For documentation about the mariadb-tzinfo-to-sql
utility, see mysql_tzinfo_to_sql. This page is about running it using Ansible.
First, we should install mariadb-tzinfo-to-sql
if it is available on our system. For example, to install it on Ubuntu, we can use this task. For other systems, use the proper module and package name.
- name: Update timezone info tags: [ timezone-update ] apt: name: tzdata state: latest install_recommends: no register: timezone_info
This task installs the latest version of the tzdata
, unless it is already installed and up to date. We register the timezone_info
variables, so we can only run the next task if the package was installed or updated.
We also specify a timezone-update
tag, so we can apply the role to only update the timezone tables.
The next task runs mariadb-tzinfo-to-sql
.
- name: Move system timezone info into MariaDB tags: [ timezone-update ] shell: > mysql_tzinfo_to_sql /usr/share/zoneinfo \ | grep -v "^Warning" \ | mysql --database=mysql when: timezone_info.changed
We use the shell
module to run the command. Running a command in this way is not idempotent, so we specify when: timezone_info.changed
to only run it when necessary. Some warnings may be generated, so we pipe the output of mysql_tzinfo_to_sql
to grep
to filter warnings out.
If we're using Galera we'll want to only update the timezone tables in one node, because the other nodes will replicate the changes. For our convenience, we can run this operation on the first node. If the nodes hostnames are defined in a list called cluster_hosts
, we can check if the current node is the first in this way:
when: timezone_info.changed and inventory_hostname == cluster_hosts[0].hostname
Content initially contributed by Vettabase Ltd.