Documentation

Ansible 2.7 Porting Guide

This section discusses the behavioral changes between Ansible 2.6 and Ansible 2.7.

It is intended to assist in updating your playbooks, plugins and other parts of your Ansible infrastructure so they will work with this version of Ansible.

We suggest you read this page along with Ansible Changelog to understand what updates you may need to make.

This document is part of a collection on porting. The complete list of porting guides can be found at porting guides.

Playbook

Role Precedence Fix during Role Loading

Ansible 2.7 makes a small change to variable precedence when loading roles, resolving a bug, ensuring that role loading matches variable precedence expectations.

Before Ansible 2.7, when loading a role, the variables defined in the role’s vars/main.yml and defaults/main.yml were not available when parsing the role’s tasks/main.yml file. This prevented the role from utilizing these variables when being parsed. The problem manifested when import_tasks or import_role was used with a variable defined in the role’s vars or defaults.

In Ansible 2.7, role vars and defaults are now parsed before tasks/main.yml. This can cause a change in behavior if the same variable is defined at the play level and the role level with different values, and leveraged in import_tasks or import_role to define the role or file to import.

Deprecated

Using a loop on a package module via squash_actions

The use of squash_actions to invoke a package module, such as “yum”, to only invoke the module once is deprecated, and will be removed in Ansible 2.11.

Instead of relying on implicit squashing, tasks should instead supply the list directly to the name, pkg or package parameter of the module. This functionality has been supported in most modules since Ansible 2.3.

OLD In Ansible 2.6 (and earlier) the following task would invoke the “yum” module only 1 time to install multiple packages

- name: Install packages
  yum:
    name: "{{ item }}"
    state: present
  with_items: "{{ packages }}"

NEW In Ansible 2.7 it should be changed to look like this:

- name: Install packages
  yum:
    name: "{{ packages }}"
    state: present

Modules

Major changes in popular modules are detailed here

  • The DEFAULT_SYSLOG_FACILITY configuration option tells Ansible modules to use a specific syslog facility when logging information on all managed machines. Due to a bug with older Ansible versions, this setting did not affect machines using journald with the systemd Python bindings installed. On those machines, Ansible log messages were sent to /var/log/messages, even if you set DEFAULT_SYSLOG_FACILITY. Ansible 2.7 fixes this bug, routing all Ansible log messages according to the value set for DEFAULT_SYSLOG_FACILITY. If you have DEFAULT_SYSLOG_FACILITY configured, the location of remote logs on systems which use journald may change.

Modules removed

The following modules no longer exist:

Deprecation notices

The following modules will be removed in Ansible 2.10. Please update your playbooks accordingly.

Noteworthy module changes

No notable changes.

Plugins

No notable changes.

Porting custom scripts

No notable changes.

Networking

No notable changes.