Amazon Linux 2018.03 is a popular choice among developers and organizations since it is designed to provide a secure, stable, and high-performance execution environment for applications on Amazon Web Services (AWS). However, users of Amazon Linux 2018.03 may encounter a common error: `Command not found: systemctl`. This issue often confuses users accustomed to using `systemctl` for service management in other Linux distributions.

Understanding the Error

What is `systemctl`?

`systemctl` is a command-line utility that is part of the systemd system and service manager, used to examine and control the systemd system and service manager. It is commonly found in modern Linux distributions such as Ubuntu, CentOS 7 and later, and Fedora.

Why is `systemctl` Unavailable on Amazon Linux 2018.03?

Amazon Linux 2018.03 is based on an older version of Linux that uses `init.d` rather than `systemd`. Consequently, the `systemctl` command is not available since systemd is not used to manage services.

Service Management on Amazon Linux 2018.03

Using `init.d` and `chkconfig`

In Amazon Linux 2018.03, service management is handled using traditional `init.d` scripts and the `chkconfig` command for runlevel management.

• Starting a Service: For starting a service, use the following command:
• Stopping a Service: To stop a service, use:
• Restarting a Service: To restart a service, use:
• Checking Service Status: To check the status of a service:
• Enable a Service to Start at Boot:
• Disable a Service from Starting at Boot:
• List All Services and Their Current Boot Status:
• Starting Apache:
• Stopping Apache:
• Restarting Apache:
• Check Apache Status:
• Enable Apache to Start at Boot:
• Disable Apache from Starting at Boot:
• Enhanced Security: Regular updates and improved security features.
• Long-Term Support: Offers long-term support for a stable operational environment.
• Systemd Integration: Includes systemd for service and resource management, offering a more modern service management ecosystem.