community.postgresql.postgresql_sequence – Create, drop, or alter a PostgreSQL sequence¶
Note
This plugin is part of the community.postgresql collection (version 1.2.0).
To install it use: ansible-galaxy collection install community.postgresql.
To use it in a playbook, specify: community.postgresql.postgresql_sequence.
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 |
|
|
cache
integer
|
Cache specifies how many sequence numbers are to be preallocated and stored in memory for faster access. The minimum value is 1 (only one value can be generated at a time, i.e., no cache), and this is also the default.
|
|
|
cascade
boolean
|
|
Automatically drop objects that depend on the sequence, and in turn all objects that depend on those objects.
Ignored if state=present.
Only used with state=absent.
|
|
cycle
boolean
|
|
The cycle option allows the sequence to wrap around when the maxvalue or minvalue has been reached by an ascending or descending sequence respectively. If the limit is reached, the next number generated will be the minvalue or maxvalue, respectively.
If
false (NO CYCLE) is specified, any calls to nextval after the sequence has reached its maximum value will return an error. False (NO CYCLE) is the default. |
|
data_type
string
|
|
Specifies the data type of the sequence. Valid types are bigint, integer, and smallint. bigint is the default. The data type determines the default minimum and maximum values of the sequence. For more info see the documentation https://www.postgresql.org/docs/current/sql-createsequence.html.
Supported from PostgreSQL 10.
|
|
db
string
|
Name of database to connect to and run queries against.
aliases: database, login_db |
|
|
increment
integer
|
Increment specifies which value is added to the current sequence value to create a new value.
A positive value will make an ascending sequence, a negative one a descending sequence. The default value is 1.
|
|
|
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.
|
|
maxvalue
integer
|
Maxvalue determines the maximum value for the sequence. The default for an ascending sequence is the maximum value of the data type. The default for a descending sequence is -1.
aliases: max |
|
|
minvalue
integer
|
Minvalue determines the minimum value a sequence can generate. The default for an ascending sequence is 1. The default for a descending sequence is the minimum value of the data type.
aliases: min |
|
|
newschema
string
|
The new schema for the sequence. Will be used for moving a sequence to another schema.
Works only for existing sequences.
|
|
|
owner
string
|
Set the owner for the sequence.
|
|
|
port
integer
|
Default: 5432
|
Database port to connect to.
aliases: login_port |
|
rename_to
string
|
The new name for the sequence.
Works only for existing sequences.
|
|
|
schema
string
|
Default: "public"
|
The schema of the sequence. This is be used to create and relocate a sequence in the given schema.
|
|
sequence
string
/ required
|
The name of the sequence.
aliases: name |
|
|
session_role
string
|
Switch to session_role after connecting. The specified session_role must be a role that the current login_user is a member of.
Permissions checking for SQL commands is carried out as though the session_role were the one that had logged in originally.
|
|
|
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
prefer matches libpq default. |
|
start
integer
|
Start allows the sequence to begin anywhere. The default starting value is minvalue for ascending sequences and maxvalue for descending ones.
|
|
|
state
string
|
|
The sequence state.
If state=absent other options will be ignored except of name and schema.
|
|
trust_input
boolean
added in 0.2.0 of community.postgresql
|
|
If
no, check whether values of parameters sequence, schema, rename_to, owner, newschema, session_role are potentially dangerous.It makes sense to use
no only when SQL injections via the parameters are possible. |
Notes¶
Note
Supports
check_mode.If you do not pass db parameter, sequence will be created in the database named postgres.
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
- community.postgresql.postgresql_table
The official documentation on the community.postgresql.postgresql_table module.
- community.postgresql.postgresql_owner
The official documentation on the community.postgresql.postgresql_owner module.
- community.postgresql.postgresql_privs
The official documentation on the community.postgresql.postgresql_privs module.
- community.postgresql.postgresql_tablespace
The official documentation on the community.postgresql.postgresql_tablespace module.
- CREATE SEQUENCE reference
Complete reference of the CREATE SEQUENCE command documentation.
- ALTER SEQUENCE reference
Complete reference of the ALTER SEQUENCE command documentation.
- DROP SEQUENCE reference
Complete reference of the DROP SEQUENCE command documentation.
Examples¶
- name: Create an ascending bigint sequence called foobar in the default
database
community.postgresql.postgresql_sequence:
name: foobar
- name: Create an ascending integer sequence called foobar, starting at 101
community.postgresql.postgresql_sequence:
name: foobar
data_type: integer
start: 101
- name: Create an descending sequence called foobar, starting at 101 and
preallocated 10 sequence numbers in cache
community.postgresql.postgresql_sequence:
name: foobar
increment: -1
cache: 10
start: 101
- name: Create an ascending sequence called foobar, which cycle between 1 to 10
community.postgresql.postgresql_sequence:
name: foobar
cycle: yes
min: 1
max: 10
- name: Create an ascending bigint sequence called foobar in the default
database with owner foobar
community.postgresql.postgresql_sequence:
name: foobar
owner: foobar
- name: Rename an existing sequence named foo to bar
community.postgresql.postgresql_sequence:
name: foo
rename_to: bar
- name: Change the schema of an existing sequence to foobar
community.postgresql.postgresql_sequence:
name: foobar
newschema: foobar
- name: Change the owner of an existing sequence to foobar
community.postgresql.postgresql_sequence:
name: foobar
owner: foobar
- name: Drop a sequence called foobar
community.postgresql.postgresql_sequence:
name: foobar
state: absent
- name: Drop a sequence called foobar with cascade
community.postgresql.postgresql_sequence:
name: foobar
cascade: yes
state: absent
Return Values¶
Common return values are documented here, the following are the fields unique to this module:
Authors¶
Tobias Birkefeld (@tcraxs)
Thomas O’Donnell (@andytom)