ansible.builtin.assemble module – Assemble configuration files from fragments
Note
This module is part of ansible-core
and included in all Ansible
installations. In most cases, you can use the short
module name
assemble
even without specifying the collections:
keyword.
However, we recommend you use the FQCN for easy linking to the
module documentation and to avoid conflicting with other collections that may have
the same module name.
Synopsis
Assembles a configuration file from fragments.
Often a particular program will take a single configuration file and does not support a
conf.d
style structure where it is easy to build up the configuration from multiple sources.assemble
will take a directory of files that can be local or have already been transferred to the system, and concatenate them together to produce a destination file.Files are assembled in string sorting order.
Puppet calls this idea fragments.
Note
This module has a corresponding action plugin.
Parameters
Parameter |
Comments |
---|---|
The attributes the resulting filesystem object should have. To get supported flags look at the man page for chattr on the target system. This string should contain the attributes in the same order as the one displayed by lsattr. The |
|
Create a backup file (if Choices:
|
|
This option controls the autodecryption of source files using vault. Choices:
|
|
A delimiter to separate the file contents. |
|
A file to create using the concatenation of all of the source files. |
|
Name of the group that should own the filesystem object, as would be fed to chown. When left unspecified, it uses the current group of the current user unless you are root, in which case it can preserve the previous ownership. |
|
A boolean that controls if files that start with a ‘.’ will be included or not. Choices:
|
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The permissions the resulting filesystem object should have. For those used to /usr/bin/chmod remember that modes are actually octal numbers. You must either add a leading zero so that Ansible’s YAML parser knows it is an octal number (like Giving Ansible a number without following one of these rules will end up with a decimal number which will have unexpected results. As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, If If Specifying |
|
Name of the user that should own the filesystem object, as would be fed to chown. When left unspecified, it uses the current user unless you are root, in which case it can preserve the previous ownership. |
|
Assemble files only if If not set, all files are assembled. Every |
|
If If Choices:
|
|
The level part of the SELinux filesystem object context. This is the MLS/MCS attribute, sometimes known as the When set to |
|
The role part of the SELinux filesystem object context. When set to |
|
The type part of the SELinux filesystem object context. When set to |
|
The user part of the SELinux filesystem object context. By default it uses the When set to |
|
An already existing directory full of source files. |
|
Influence when to use atomic operation to prevent data corruption or inconsistent reads from the target filesystem object. By default this module uses atomic operations to prevent data corruption or inconsistent reads from the target filesystem objects, but sometimes systems are configured or just broken in ways that prevent this. One example is docker mounted filesystem objects, which cannot be updated atomically from inside the container and can only be written in an unsafe manner. This option allows Ansible to fall back to unsafe methods of updating filesystem objects when atomic operations fail (however, it doesn’t force Ansible to perform unsafe writes). IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption. Choices:
|
|
The validation command to run before copying into place. The path to the file to validate is passed in via ‘%s’ which must be present as in the sshd example below. The command is passed securely so shell features like expansion and pipes won’t work. |
Attributes
Attribute |
Support |
Description |
---|---|---|
Support: full |
Indicates this has a corresponding action plugin so some parts of the options can be executed on the controller |
|
Support: none |
Supports being used with the |
|
Support: none |
Forces a ‘global’ task that does not execute per host, this bypasses per host templating and serial, throttle and other loop considerations Conditionals will work as if This action will not work normally outside of lockstep strategies |
|
Support: none |
Can run in check_mode and return changed status prediction without modifying target |
|
Support: full |
Will return details on what has changed (or possibly needs changing in check_mode), when in diff mode |
|
Platform: posix |
Target OS/families that can be operated against |
|
Support: full |
Uses Ansible’s strict file operation functions to ensure proper permissions and avoid data corruption |
|
Support: full |
Can automatically decrypt Ansible vaulted files |
See Also
See also
- ansible.builtin.copy
Copy files to remote locations.
- ansible.builtin.template
Template a file out to a target host.
- ansible.windows.win_copy
Copies files to remote locations on windows hosts.
Examples
- name: Assemble from fragments from a directory
ansible.builtin.assemble:
src: /etc/someapp/fragments
dest: /etc/someapp/someapp.conf
- name: Insert the provided delimiter between fragments
ansible.builtin.assemble:
src: /etc/someapp/fragments
dest: /etc/someapp/someapp.conf
delimiter: '### START FRAGMENT ###'
- name: Assemble a new "sshd_config" file into place, after passing validation with sshd
ansible.builtin.assemble:
src: /etc/ssh/conf.d/
dest: /etc/ssh/sshd_config
validate: /usr/sbin/sshd -t -f %s