FAQ: I want to install Pleasanter 1.3.43.0 or earlier in a Linux environment with PostgreSQL version 14 or earlier.
## Answer
Please create a PostgreSQL database and install the full-text search module (pg_trgm) manually.
---
## Overview
This is the procedure for installing Pleasanter 1.3.43.0 or earlier in a Linux environment using PostgreSQL version 14 or earlier.
## Operation Procedure
The basic installation procedure is described in the manual below.
・[Installing Pleasanter on Ubuntu | Pleasanter](/manual/getting-started-pleasanter-ubuntu)
・ [Installing Pleasanter on CentOS | Pleasanter](/manual/getting-started-pleasanter-centos)
・[Installing Pleasanter on Red Hat Enterprise Linux | Pleasanter](/manual/getting-started-pleasanter-rhel)
・[Installing Pleasanter on AlmaLinux | Pleasanter](https://pleasanter.org/manual/getting-started-pleasanter-almalinux)
When installing Pleasanter version 1.3.43.0 or earlier, you must manually create a PostgreSQL database and install the full-text search module (pg_trgm). After installing PostgreSQL, create a database install the full-text search module according to the following procedure, and then follow the subsequent steps described in the manual above.
### Setting The PostgreSQL User
Set a password for the PostgreSQL administration user "postgres" (OS user).
```
sudo passwd postgres
```
```
sudo su - postgres
psql -U postgres
```
Set the password for the PostgreSQL administration user "postgres".
```
postgres=# alter role postgres with password '<new password>';
```
### Creating A Database For Pleasanter
Create the database "Implem.Pleasanter".
```
postgres=# create database "Implem.Pleasanter";
```
Check the created DB with the following command.
```
postgres=# \l
```
### Installing The Full-text Search Module (pg_trgm)
Install the module (pg_trgm) required for full-text search of text.
```
postgres=# \c "Implem.Pleasanter"
Implem.Pleasanter=# create extension pg_trgm;
```