ansible.builtin.wait_for module – Waits for a condition before continuing
Note
This module is part of ansible-core
and included in all Ansible installations. In most cases, you can use the short module name wait_for
even without specifying the collections keyword. However, we recommend you use the Fully Qualified Collection Name (FQCN) ansible.builtin.wait_for
for easy linking to the module documentation and to avoid conflicting with other collections that may have the same module name.
Synopsis
- You can wait for a set amount of time
timeout
, this is the default if nothing is specified or justtimeout
is specified. This does not produce an error. - Waiting for a port to become available is useful for when services are not immediately available after their init scripts return which is true of certain Java application servers.
- It is also useful when starting guests with the community.libvirt.virt module and needing to pause until they are ready.
- This module can also be used to wait for a regex match a string to be present in a file.
- In Ansible 1.6 and later, this module can also be used to wait for a file to be available or absent on the filesystem.
- In Ansible 1.8 and later, this module can also be used to wait for active connections to be closed before continuing, useful if a node is being rotated out of a load balancer pool.
- For Windows targets, use the ansible.windows.win_wait_for module instead.
Parameters
Parameter | Comments |
---|---|
active_connection_states list / elements=string | The list of TCP connection states which are counted as active connections. Default: |
connect_timeout integer | Maximum number of seconds to wait for a connection to happen before closing and retrying. Default: |
delay integer | Number of seconds to wait before starting to poll. Default: |
exclude_hosts list / elements=string | List of hosts or IPs to ignore when looking for active TCP connections for |
host string | A resolvable hostname or IP address to wait for. Default: |
msg string | This overrides the normal error message from a failure to meet the required conditions. |
path path | |
port integer | |
search_regex string | Can be used to match a string in either a file or a socket connection. Defaults to a multiline regex. |
sleep integer | Number of seconds to sleep between checks. Before Ansible 2.3 this was hardcoded to 1 second. Default: |
state string | Either When checking a port When checking for a file or a search string Choices:
|
timeout integer | Maximum number of seconds to wait for, when used with another condition it will force an error. When used without other conditions it is equivalent of just sleeping. Default: |
Attributes
Attribute | Support | Description |
---|---|---|
check_mode | Support: none | Can run in check_mode and return changed status prediction without modifying target, if not supported the action will be skipped. |
diff_mode | Support: none | Will return details on what has changed (or possibly needs changing in check_mode), when in diff mode |
platform | Platform: posix | Target OS/families that can be operated against |
Notes
Note
- The ability to use search_regex with a port connection was added in Ansible 1.7.
- Prior to Ansible 2.4, testing for the absence of a directory or UNIX socket did not work correctly.
- Prior to Ansible 2.4, testing for the presence of a file did not work correctly if the remote user did not have read access to that file.
- Under some circumstances when using mandatory access control, a path may always be treated as being absent even if it exists, but can’t be modified or created by the remote user either.
- When waiting for a path, symbolic links will be followed. Many other modules that manipulate files do not follow symbolic links, so operations on the path using other modules may not work exactly as expected.
See Also
See also
- ansible.builtin.wait_for_connection
-
Waits until remote system is reachable/usable.
- ansible.windows.win_wait_for
-
Waits for a condition before continuing.
- community.windows.win_wait_for_process
-
Waits for a process to exist or not exist before continuing.
Examples
- name: Sleep for 300 seconds and continue with play ansible.builtin.wait_for: timeout: 300 delegate_to: localhost - name: Wait for port 8000 to become open on the host, don't start checking for 10 seconds ansible.builtin.wait_for: port: 8000 delay: 10 - name: Waits for port 8000 of any IP to close active connections, don't start checking for 10 seconds ansible.builtin.wait_for: host: 0.0.0.0 port: 8000 delay: 10 state: drained - name: Wait for port 8000 of any IP to close active connections, ignoring connections for specified hosts ansible.builtin.wait_for: host: 0.0.0.0 port: 8000 state: drained exclude_hosts: 10.2.1.2,10.2.1.3 - name: Wait until the file /tmp/foo is present before continuing ansible.builtin.wait_for: path: /tmp/foo - name: Wait until the string "completed" is in the file /tmp/foo before continuing ansible.builtin.wait_for: path: /tmp/foo search_regex: completed - name: Wait until regex pattern matches in the file /tmp/foo and print the matched group ansible.builtin.wait_for: path: /tmp/foo search_regex: completed (?P<task>\w+) register: waitfor - ansible.builtin.debug: msg: Completed {{ waitfor['match_groupdict']['task'] }} - name: Wait until the lock file is removed ansible.builtin.wait_for: path: /var/lock/file.lock state: absent - name: Wait until the process is finished and pid was destroyed ansible.builtin.wait_for: path: /proc/3466/status state: absent - name: Output customized message when failed ansible.builtin.wait_for: path: /tmp/foo state: present msg: Timeout to find file /tmp/foo # Do not assume the inventory_hostname is resolvable and delay 10 seconds at start - name: Wait 300 seconds for port 22 to become open and contain "OpenSSH" ansible.builtin.wait_for: port: 22 host: '{{ (ansible_ssh_host|default(ansible_host))|default(inventory_hostname) }}' search_regex: OpenSSH delay: 10 connection: local # Same as above but you normally have ansible_connection set in inventory, which overrides 'connection' - name: Wait 300 seconds for port 22 to become open and contain "OpenSSH" ansible.builtin.wait_for: port: 22 host: '{{ (ansible_ssh_host|default(ansible_host))|default(inventory_hostname) }}' search_regex: OpenSSH delay: 10 vars: ansible_connection: local
Return Values
Common return values are documented here, the following are the fields unique to this module:
Key | Description |
---|---|
elapsed integer | The number of seconds that elapsed while waiting Returned: always Sample: |
match_groupdict dictionary | Dictionary containing all the named subgroups of the match, keyed by the subgroup name, as returned by https://docs.python.org/3/library/re.html#re.MatchObject.groupdict Returned: always Sample: |
match_groups list / elements=string | Tuple containing all the subgroups of the match as returned by https://docs.python.org/3/library/re.html#re.MatchObject.groups Returned: always Sample: |
Collection links
© 2012–2018 Michael DeHaan
© 2018–2024 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/collections/ansible/builtin/wait_for_module.html