Linux - Boot (Init service system)

About

The Init system is the first process (as PID 1) started by a operating system at system startup that start all other service (ie services)

List

The following are possible init system:

Management

How to know wich init system is running

  • bash
ps -f --pid 1
UID         PID   PPID  C STIME TTY          TIME CMD
root          1      0  0 11:38 ?        00:00:07 /usr/lib/systemd/systemd --switched-root --system --deserialize 21

where: systemd is SystemD - Services

  • Ansible shows you this information in the ansible_service_mgr variable
when: ansible_service_mgr == "systemd"

Possible values are:


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