5/8/2023 0 Comments Postgresql 13![]() Enable networking (bind addresses) in nf. ![]() There are four things we have to do on the primary server: In a more secure setup, you might want to do this in a more precise manner. In our example, the firewall will be disabled completely to make it easier for the reader. If the firewall is still active, the replica will not be able to access port 5432. Why is that necessary? The replica will connect to the master on port 5432. Now let’s move on to the next step: disabling the firewall on the ~]# systemctl disable firewalld Let’s check what we should now see on ~]# ps axf | grep postĥ542 pts/1 S 0:00 \_ grep -color=auto postĥ215 ? Ss 0:00 /usr/pgsql-13/bin/postmaster -D /var/lib/pgsql/13/data/ĥ220 ? Ss 0:00 \_ postgres: background writerĥ222 ? Ss 0:00 \_ postgres: autovacuum launcherĥ223 ? Ss 0:00 \_ postgres: stats collectorĥ224 ? Ss 0:00 \_ postgres: logical replication launcher Sudo /usr/pgsql-13/bin/postgresql-13-setup initdb The following script shows how things work. The way to do that is to go to the PostgreSQL website and follow the instructions. Once you have installed CentOS / RHEL you can already prepare the installation of PostgreSQL itself. Let’s prepare these systems step-by-step. To show how the setup works, we are using two virtual machines with the following IPs: The process on RHEL (Redhat Enterprise Linux) is expected to be the same. The entire setup will be done using CentOS 8.3. Here is what the desired setup will look like: The goal of this tutorial is to create a primary server replicating data to a secondary one, using asynchronous replication. PostgreSQL replication: What we want to achieveīefore we get started with configuring PostgreSQL, it makes sense to take a look at what we want to achieve. This tutorial will show you how to configure PostgreSQL replication and how to set up your database servers quickly. There are two types of replication available in PostgreSQL at the moment: Streaming replication
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