pgproto command not found

In this troubleshooting guide we learn how to fix pgproto command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

pgproto: command not found

or when using sudo you get the following error message

sudo: pgproto: command not found

Solutions to pgproto: command not found

How To Fix pgproto: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu pgproto is provided by pgpool2 package.

pgpool2 is:

pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. It provides the following features:

Connection Pooling
Replication
Load Balance
Limiting Exceeding Connections
Parallel Query

pgpool-II talks PostgreSQL’s backend and frontend protocol, and relays a connection between them. Therefore, a database application (frontend) thinks that pgpool-II is the actual PostgreSQL server, and the server (backend) sees pgpool-II as one of its clients. Because pgpool-II is transparent to both the server and the client, an existing database application can be used with pgpool-II almost without a change to its sources.

This is version 3 of pgpool-II, the second generation of pgpool.

To fix this problem, we can install more using the command below.

sudo apt-get -y install pgpool2

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install pgpool2.

sudo apt -y install pgpool2

Or if you have aptitude installed you can use the following command.

sudo aptitude install pgpool2

Summary

In this tutorial we learn how to fix pgproto command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.