In the next article, I discuss how to Backup and restore PostgreSQL databases with Ansible using a database dump. Once it finishes, you’ll be directed to the following page: Click the installer that pops up in the bottom-left of your browser (you’ll see it there if you’re using Chromeif not, double-click the installer from your Downloads folder). We have seen how to install and configure a PostgreSQL database with a database user, and how to run an initial SQL migration (or any other SQL script). Service : name=postgresql state=restarted name : "Find out if PostgreSQL is initialized" Let's now create the Ansible playbook! First, we need to install the database itself, along with psycopg2-binary Python library that will allow us to use Ansible PostgreSQL modules postgresql_db, postgresql_user, postgresql_privs and postgresql_pg_hba.
Just create ansible.cfg and hosts.ini files with the proper connection information, or modify the playbook itself. The playbook expects that we configure the target machines using an inventory file. In this tutorial you have learned how to set up an active-active replication between two instances of PostgreSQL installed on two different instances of Hyper Protect Virtual Servers. When needed, use Ansible Vault or environment variables when running the playbook. Save the changes you made to the file and close it.Note that storing passwords in plain text is not the best idea.Add the IP addresses of connecting client machines and the client authentication methods used for connections.Start Notepad or another text editor application and open the pg_hba.conf file from the PostgreSQL installation directory.Start PgAdminIII, connect to the PostgreSQL instance as the postgres super user, connect to the database, click Tools, point to Server Configuration, then click pg_hba.conf.Open the pg_hba.conf file by doing one of the following:.Make a backup copy of the pg_hba.conf file before you alter it.You can either alter the pg_hba.conf file directly by opening it in a text editor, or you can alter the pg_hba.conf file through PgAdminIII. PostgreSQL is installed on a Windows server Use pg_ctl to start (or restart) the PostgreSQL postmaster.If your PostgreSQL database cluster is set up on a machine that has an IPV6 address and you want machines with an IPV4 address to connect to it, you need to uncomment the following line in the pg_hba.conf file: In RedHat-based Linux distributions nf is located at /var/lib/pgsql/data/. Host all all fe60::0000:0000:0000:0000%10/8 md5 The location of this file varies depending on your operating system: In Debian-based Linux distributions nf is located at /etc/postgresql/10/main/. To allow any machines with an address beginning with fe60 to connect, you would add this line to the pg_hba.conf file: The first part of RDS creation process determines how you want configure your database as well as the basic properties of your new database like your database engine, deployment type, and basic configuration. The Applies To column in the following table. Configuring standard PostgreSQL deployment options. Host all all fe60::61f9:1253:c522:9b92%10/128 md5 The PostgreSQL integration collects both Metrics (M) and Inventory (I) information. If you need to configure the database cluster to accept connections from machines with an IPV6 address, the format would be as follows: The preceding examples were for IPV4 addresses. If you want to allow all users who supply a valid password to connect to any of the databases on the PostgreSQL instance from addresses beginning with 100, you would add a line similar to the following to the pg_hba.conf file: For example, to allow any user who supplies a valid password to connect to a database named habitat from addresses beginning with 10.2.12 using an md5 connection, add the following line to the pg_hba.conf file:
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