chkconfig
manage SysVinit service runlevels
TLDR
SYNOPSIS
chkconfig [options] [name] [on|off|reset]
DESCRIPTION
chkconfig manages service runlevels on Red Hat-based Linux systems using SysVinit. It updates the symbolic links in /etc/rc.d/ directories that control which services start at each runlevel.This tool is primarily used on CentOS 6 and older RHEL systems. Modern systems using systemd should use systemctl instead.
PARAMETERS
--list [name]
List all services or a specific service's runlevels--level levels
Specify which runlevels to affect (e.g., 2345)--add name
Add a new service for management--del name
Remove a service from management
CONFIGURATION
/etc/rc.d/init.d/
Directory containing SysVinit service scripts managed by chkconfig. Each script includes a chkconfig header specifying default runlevels.
INSTALL
CAVEATS
Legacy tool for SysVinit systems. On systemd-based systems (CentOS 7+, RHEL 7+), use systemctl instead. Runlevels 0-6 have specific meanings: 0=halt, 1=single-user, 2-5=multi-user, 6=reboot.
HISTORY
chkconfig was developed by Red Hat for managing SysVinit services. With the adoption of systemd, its functionality has been largely replaced by systemctl, though it remains available for compatibility.
SEE ALSO
systemctl(1), service(8), update-rc.d(8)
