Installing Nautobot Dependencies on CentOS/RHEL¶
This installation guide assumes that you are running CentOS or RHEL version 8.2+ on your system.
Install System Packages¶
Install the prerequisite system libraries and utilities.
This will install:
- Git
- Python 3
- Pip
- Redis server and client
Database Setup¶
In this step you'll set up your database server, create a database and database user for use by Nautobot, and verify your connection to the database.
You must select either MySQL or PostgreSQL. PostgreSQL is used by default with Nautobot, so if you just want to get started or don't have a preference, please stick with PostgreSQL.
Please follow the steps for your selected database backend below.
PostgreSQL Setup¶
Install PostgreSQL¶
This will install the PostgreSQL database server and client.
Initialize PostgreSQL¶
CentOS/RHEL requires a manual step to generate the initial configurations required by PostgreSQL.
Configure Authentication¶
CentOS/RHEL configures PostgreSQL to use ident host-based authentication by default. Because Nautobot will need to authenticate using a username and password, we must update pg_hba.conf to support md5 password authentication.
As root, edit /var/lib/pgsql/data/pg_hba.conf and change ident to md5 for the lines below.
Before:
# IPv4 local connections:
host all all 127.0.0.1/32 ident
# IPv6 local connections:
host all all ::1/128 ident
After:
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
Start PostgreSQL¶
Start the service and enable it to run at system startup:
Create a PostgreSQL Database¶
At a minimum, we need to create a database for Nautobot and assign it a username and password for authentication. This is done with the following commands.
Danger
Do not use the password from the example. Choose a strong, random password to ensure secure database authentication for your Nautobot installation.
Example output:
postgres=# CREATE DATABASE nautobot;
CREATE DATABASE
postgres=# CREATE USER nautobot WITH PASSWORD 'insecure_password';
CREATE ROLE
postgres=# GRANT ALL PRIVILEGES ON DATABASE nautobot TO nautobot;
GRANT
postgres=# \q
Verify PostgreSQL Service Status¶
You can verify that authentication works issuing the following command and providing the configured password. (Replace localhost with your database server if using a remote database.)
If successful, you will enter a nautobot prompt. Type \conninfo to confirm your connection, or type \q to exit.
Example output:
Password for user nautobot:
psql (10.15)
Type "help" for help.
nautobot=> \conninfo
You are connected to database "nautobot" as user "nautobot" on host "localhost" (address "127.0.0.1") at port "5432".
nautobot=> \q
MySQL Setup¶
Install MySQL¶
This will install the MySQL database server and client. Additionally, MySQL requires that gcc and the MySQL development libraries are installed so that we may compile the Python mysqlclient library during the Nautobot installation steps.
Start MySQL¶
Start the service and enable it to run at system startup:
Create a MySQL Database¶
At a minimum, we need to create a database for Nautobot and assign it a username and password for authentication. This is done with the following commands.
Note
Replace localhost below with your database server if using a remote database.
Danger
Do not use the password from the example. Choose a strong, random password to ensure secure database authentication for your Nautobot installation.
Example output:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.21 Source distribution
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> CREATE DATABASE nautobot;
Query OK, 1 row affected (0.00 sec)
mysql> CREATE USER 'nautobot'@'localhost' IDENTIFIED BY 'insecure_password';
Query OK, 0 rows affected (0.00 sec)
mysql> GRANT ALL ON nautobot.* TO 'nautobot'@'localhost';
Query OK, 0 rows affected (0.00 sec)
mysql> \q
Bye
Verify MySQL Service Status¶
You can verify that authentication works issuing the following command and providing the configured password.
If successful, you will enter a mysql> prompt. Type status to confirm your connection, or type \q to exit.
Note
Replace localhost below with your database server if using a remote database.
Example output:
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.21 Source distribution
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> status
--------------
mysql Ver 8.0.21 for Linux on x86_64 (Source distribution)
Connection id: 10
Current database: nautobot
Current user: nautobot@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 8.0.21 Source distribution
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8mb4
Db characterset: utf8mb4
Client characterset: utf8mb4
Conn. characterset: utf8mb4
UNIX socket: /var/lib/mysql/mysql.sock
Binary data as: Hexadecimal
Uptime: 4 min 12 sec
Threads: 2 Questions: 12 Slow queries: 0 Opens: 151 Flush tables: 3 Open tables: 69 Queries per second avg: 0.047
--------------
mysql> \q
Bye
Redis Setup¶
Start Redis¶
Start the service and enable it to run at system startup:
Verify Redis Service Status¶
Use the redis-cli utility to ensure the Redis service is functional:
Example output:
Deploy Nautobot¶
Now that Nautobot dependencies are installed and configured, you're ready to Install Nautobot!