postgresql_ping – Check remote PostgreSQL server availability¶
New in version 2.8.
Parameters¶
| Parameter | Choices/Defaults | Comments | 
|---|---|---|
| ca_cert 
                    string
                                                                 | Specifies the name of a file containing SSL certificate authority (CA) certificate(s). If the file exists, the server's certificate will be verified to be signed by one of these authorities. aliases: ssl_rootcert | |
| db 
                    string
                                                                 | Name of a database to connect to. aliases: login_db | |
| login_host 
                    string
                                                                 | Host running the database. | |
| login_password 
                    string
                                                                 | The password used to authenticate with. | |
| login_unix_socket 
                    string
                                                                 | Path to a Unix domain socket for local connections. | |
| login_user 
                    string
                                                                 | Default: "postgres" | The username used to authenticate with. | 
| port 
                    integer
                                                                 | Default: 5432 | Database port to connect to. aliases: login_port | 
| ssl_mode 
                    string
                                                                 | 
 | Determines whether or with what priority a secure SSL TCP/IP connection will be negotiated with the server. See https://www.postgresql.org/docs/current/static/libpq-ssl.html for more information on the modes. Default of  prefermatches libpq default. | 
Notes¶
Note
- The default authentication assumes that you are either logging in as or sudo’ing to the postgresaccount on the host.
- To avoid “Peer authentication failed for user postgres” error, use postgres user as a become_user.
- This module uses psycopg2, a Python PostgreSQL database adapter. You must ensure that psycopg2 is installed on the host before using this module.
- If the remote host is the PostgreSQL server (which is the default case), then PostgreSQL must also be installed on the remote host.
- For Ubuntu-based systems, install the postgresql, libpq-dev, and python-psycopg2 packages on the remote host before using this module.
- The ca_cert parameter requires at least Postgres version 8.4 and psycopg2 version 2.4.3.
See Also¶
See also
- postgresql_info – Gather information about PostgreSQL servers
- The official documentation on the postgresql_info module.
Examples¶
# PostgreSQL ping dbsrv server from the shell:
# ansible dbsrv -m postgresql_ping
# In the example below you need to generate certificates previously.
# See https://www.postgresql.org/docs/current/libpq-ssl.html for more information.
- name: PostgreSQL ping dbsrv server using not default credentials and ssl
  postgresql_ping:
    db: protected_db
    login_host: dbsrv
    login_user: secret
    login_password: secret_pass
    ca_cert: /root/root.crt
    ssl_mode: verify-full
Return Values¶
Common return values are documented here, the following are the fields unique to this module:
| Key | Returned | Description | 
|---|---|---|
| is_available 
                  boolean
                                       | always | PostgreSQL server availability. Sample: True | 
| server_version 
                  dictionary
                                       | always | PostgreSQL server version. Sample: {'major': 10, 'minor': 1} | 
Status¶
- This module is not guaranteed to have a backwards compatible interface. [preview]
- This module is maintained by the Ansible Community. [community]
Authors¶
- Andrew Klychkov (@Andersson007)
Hint
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