cron – Manage cron.d and crontab entries
Synopsis
- Use this module to manage crontab and environment variables entries. This module allows you to create environment variables and named crontab entries, update, or delete them.
- When crontab jobs are managed: the module includes one line with the description of the crontab entry
"#Ansible: <name>"
corresponding to the “name” passed to the module, which is used by future ansible/module calls to find/check the state. The “name” parameter should be unique, and changing the “name” value will result in a new cron task being created (or a different one being removed). - When environment variables are managed, no comment line is added, but, when the module needs to find/check the state, it uses the “name” parameter to find the environment variable definition line.
- When using symbols such as %, they must be properly escaped.
Requirements
The below requirements are needed on the host that executes this module.
- cron
Parameters
Parameter | Choices/Defaults | Comments |
---|---|---|
backup boolean |
| If set, create a backup of the crontab before it is modified. The location of the backup is returned in the backup_file variable by this module. |
cron_file string | If specified, uses this file instead of an individual user's crontab. If this is a relative path, it is interpreted with respect to /etc/cron.d. If it is absolute, it will typically be /etc/crontab. Many linux distros expect (and some require) the filename portion to consist solely of upper- and lower-case letters, digits, underscores, and hyphens. To use the cron_file parameter you must specify the user as well. | |
day string | Default: "*" | Day of the month the job should run ( 1-31, *, */2, etc ) aliases: dom |
disabled boolean added in 2.0 |
| If the job should be disabled (commented out) in the crontab. Only has effect if state=present . |
env boolean added in 2.1 |
| If set, manages a crontab's environment variable. New variables are added on top of crontab. name and value parameters are the name and the value of environment variable. |
hour string | Default: "*" | Hour when the job should run ( 0-23, *, */2, etc ) |
insertafter string added in 2.1 | Used with state=present and env .If specified, the environment variable will be inserted after the declaration of specified environment variable. | |
insertbefore string added in 2.1 | Used with state=present and env .If specified, the environment variable will be inserted before the declaration of specified environment variable. | |
job string | The command to execute or, if env is set, the value of environment variable. The command should not contain line breaks. Required if state=present .aliases: value | |
minute string | Default: "*" | Minute when the job should run ( 0-59, *, */2, etc ) |
month string | Default: "*" | Month of the year the job should run ( 1-12, *, */2, etc ) |
name string | Description of a crontab entry or, if env is set, the name of environment variable. Required if state=absent .Note that if name is not set and state=present , then a new crontab entry will always be created, regardless of existing ones.This parameter will always be required in future releases. | |
reboot boolean |
| If the job should be run at reboot. This option is deprecated. Users should use special_time. |
special_time string |
| Special time specification nickname. |
state string |
| Whether to ensure the job or environment variable is present or absent. |
user string | The specific user whose crontab should be modified. When unset, this parameter defaults to using root . | |
weekday string | Default: "*" | Day of the week that the job should run ( 0-6 for Sunday-Saturday, *, etc ) aliases: dow |
Examples
- name: Ensure a job that runs at 2 and 5 exists. Creates an entry like "0 5,2 * * ls -alh > /dev/null" cron: name: "check dirs" minute: "0" hour: "5,2" job: "ls -alh > /dev/null" - name: 'Ensure an old job is no longer present. Removes any job that is prefixed by "#Ansible: an old job" from the crontab' cron: name: "an old job" state: absent - name: Creates an entry like "@reboot /some/job.sh" cron: name: "a job for reboot" special_time: reboot job: "/some/job.sh" - name: Creates an entry like "PATH=/opt/bin" on top of crontab cron: name: PATH env: yes job: /opt/bin - name: Creates an entry like "APP_HOME=/srv/app" and insert it after PATH declaration cron: name: APP_HOME env: yes job: /srv/app insertafter: PATH - name: Creates a cron file under /etc/cron.d cron: name: yum autoupdate weekday: 2 minute: 0 hour: 12 user: root job: "YUMINTERACTIVE=0 /usr/sbin/yum-autoupdate" cron_file: ansible_yum-autoupdate - name: Removes a cron file from under /etc/cron.d cron: name: "yum autoupdate" cron_file: ansible_yum-autoupdate state: absent - name: Removes "APP_HOME" environment variable from crontab cron: name: APP_HOME env: yes state: absent
Status
- This module is not guaranteed to have a backwards compatible interface. [preview]
- This module is maintained by the Ansible Community. [community]
Authors
- Dane Summers (@dsummersl)
- Mike Grozak (@rhaido)
- Patrick Callahan (@dirtyharrycallahan)
- Evan Kaufman (@EvanK)
- Luca Berruti (@lberruti)
Hint
If you notice any issues in this documentation you can edit this document to improve it.
© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.8/modules/cron_module.html