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What is systemd?
Systemd is the System Management Daemon, which provides a standard for controlling the Linux boot process
. It is named per the UNIX convention of adding ‘d’ to the end of daemon’s name. Systemd is intended as a drop-in replacement for the very common init start-up scripts for the boot process
(which is also referred to as System V or SysV).
Though there is some debate regarding the benefits of systemd, the advantages do include: Service Reporting
(failed? suspended? error?), Process Monitoring
(kills user processes at logout), and Parallel Processes
(multiple services are able to start at same time, improving boot times).
Continue reading “Managing a Linux Server with Systemd”
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chkconfig is a command for checking and updating runlevel information for system services. For a primer on runlevels, check out our tutorial: Linux Runlevels Explained.
Continue reading “chkconfig Command Examples for Red Hat and CentOS”
- These instructions are intended specifically for checking and updating chkconfig.
- I’ll be working from both a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.
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is one of the modes that a Unix-based, dedicated server
or a VPS server
OS will run on. Each runlevel has a certain number of services stopped or started, giving the user control over the behavior of the machine. Conventionally, seven runlevels exist, numbered from zero to six.
Continue reading “Linux Runlevels Explained”