Postgres Operations

The PostgreSQL modules manage PostgreSQL databases, users and privileges.

Requires the psql CLI executable on the target host(s).

All operations in this module take four optional arguments:

• psql_user: the username to connect to postgresql to
• psql_password: the password for the connecting user
• psql_host: the hostname of the server to connect to
• psql_port: the port of the server to connect to

See example/postgresql.py for detailed example

Facts used in these operations: postgres.PostgresDatabases, postgres.PostgresRoles.

postgres.database

Add/remove PostgreSQL databases.

postgres.database(
    database, present=True, owner=None, template=None, encoding=None, lc_collate=None,
    lc_ctype=None, tablespace=None, connection_limit=None, psql_user=None, psql_password=None,
    psql_host=None, psql_port=None,
)

• name: name of the database
• present: whether the database should exist or not
• owner: the PostgreSQL role that owns the database
• template: name of the PostgreSQL template to use
• encoding: encoding of the database
• lc_collate: lc_collate of the database
• lc_ctype: lc_ctype of the database
• tablespace: the tablespace to use for the template
• connection_limit: the connection limit to apply to the database
• psql_*: global module arguments, see above

Updates:

pyinfra will not attempt to change existing databases - it will either create or drop databases, but not alter them (if the db exists this operation will make no changes).

Example:

postgresql.database(
    name="Create the pyinfra_stuff database",
    database="pyinfra_stuff",
    owner="pyinfra",
    encoding="UTF8",
    sudo_user="postgres",
)

postgres.dump

Stateless operation

This operation will always execute commands and is not idempotent.

Dump a PostgreSQL database into a .sql file. Requires pg_dump.

postgres.dump(dest, database=None, psql_user=None, psql_password=None, psql_host=None, psql_port=None)

• dest: name of the file to dump the SQL to
• database: name of the database to dump
• psql_*: global module arguments, see above

Example:

postgresql.dump(
    name="Dump the pyinfra_stuff database",
    dest="/tmp/pyinfra_stuff.dump",
    database="pyinfra_stuff",
    sudo_user="postgres",
)

postgres.load

Stateless operation

This operation will always execute commands and is not idempotent.

Load .sql file into a database.

postgres.load(src, database=None, psql_user=None, psql_password=None, psql_host=None, psql_port=None)

• src: the filename to read from
• database: name of the database to import into
• psql_*: global module arguments, see above

Example:

postgresql.load(
    name="Import the pyinfra_stuff dump into pyinfra_stuff_copy",
    src="/tmp/pyinfra_stuff.dump",
    database="pyinfra_stuff_copy",
    sudo_user="postgres",
)

postgres.role

Add/remove PostgreSQL roles.

postgres.role(
    role, present=True, password=None, login=True, superuser=False, inherit=False,
    createdb=False, createrole=False, replication=False, connection_limit=None,
    psql_user=None, psql_password=None, psql_host=None, psql_port=None,
)

• role: name of the role
• present: whether the role should be present or absent
• password: the password for the role
• login: whether the role can login
• superuser: whether role will be a superuser
• inherit: whether the role inherits from other roles
• createdb: whether the role is allowed to create databases
• createrole: whether the role is allowed to create new roles
• replication: whether this role is allowed to replicate
• connection_limit: the connection limit for the role
• psql_*: global module arguments, see above

Updates:

pyinfra will not attempt to change existing roles - it will either create or drop roles, but not alter them (if the role exists this operation will make no changes).

Example:

postgresql.role(
    name="Create the pyinfra PostgreSQL role",
    role="pyinfra",
    password="somepassword",
    superuser=True,
    login=True,
    sudo_user="postgres",
)

postgres.sql

Stateless operation

This operation will always execute commands and is not idempotent.

Execute arbitrary SQL against PostgreSQL.

postgres.sql(sql, database=None, psql_user=None, psql_password=None, psql_host=None, psql_port=None)

• sql: SQL command(s) to execute
• database: optional database to execute against
• psql_*: global module arguments, see above