Chapter 8 . Understanding the (Domain and web hosting) Boot Process 313
Chapter 8 . Understanding the Boot Process 313 This script sets up some of the most basic system configuration including host- name, time, and file systems and loads needed kernel modules. The following is a complete list of the tasks that this script performs. 1. Set the default system PATH variable. 2. Check to see if the /etc/sysconfig/network file exists, and if so, set up networking. If the file does not exist, disable networking. 3. Print the welcome banner shown at boot, and prompt the user to enter Interactive boot mode. 4. Enable logging with dmesg. 5. Mount the /procfile system. 6. Configure several kernel parameters by using the sysctltool. 7. Set the system clock. 8. Load the default keymap. 9. Execute /sbin/setsysfontto configure the default system font. 10. Activate the swap partitions with the swap -acommand. 11. Set the system s hostname. 12. Configure NIS, if used. 13. Check to see if fsckneeds to be run on a volume, and if a serious error is detected, prompt the user to log in and perform the tests manually. 14. Enable quotas on the root file system. 15. Configure Plug-and-Play devices using isapnp. 16. The root file system is then remounted read/write. 17. Set up the /etc/mtab file, which lists mounted file systems. 18. Set up the /etc/HOSTNAME file. 19. Run depmod -a and set up the loadable kernel modules. 20. Load any sound modules configured. 21. Load any software RAID devices configured in /etc/raidtab. 22. Check other nonroot file systems with fsck. 23. Mount all other nonroot file systems. 24. Enable quotas on the other nonroot file systems. 25. Clean up various temporary files that are no longer needed. 26. Execute /etc/rc.d/rc.serial to configure the serial devices. 27. Load SCSI tape drive modules if detected.
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