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Centos7 system log explanation boot. The log, please great god in detail under the meaning of each l

Time:09-21

[OK] Started the Show Plymouth Boot Screen.
[OK] Reached target Paths.
[OK] Reached the target, Basic System.
[OK] Found device/dev/disk/by uuid/eb448abb d8d - bcde - 94434-3012-4 d586a31.
Starting the File System Check on/dev/... B - 3012-4 d8d - bcde - 94434 d586a31...
[OK] Started dracut initqueue hook.
[OK] Reached target Remote File Systems (Pre).
[OK] Reached target Remote File Systems.
[OK] Started the File System Check on/dev/d... Abb d8d - bcde - 94434-3012-4 d586a31.
Mounting/sysroot...
[OK] Mounted/sysroot.
[OK] Reached target Initrd Root File System.
Starting Reload the Configuration from the Real Root...
[OK] Started Reload the Configuration from the Real Root.
[OK] Reached target Initrd File Systems.
[OK] Reached target Initrd Default target.
Starting dracut pre - the pivot and the cleanup hook...
[OK] Started dracut pre - the pivot and the cleanup hook.
Starting Cleaning Up Shutting Down Daemons...
Starting Plymouth switch root service...
[OK] Stopped target Timers.
[OK] Stopped Cleaning Up Shutting Down Daemons.
[OK] Stopped dracut pre - the pivot and the cleanup hook.
Stopping dracut pre - the pivot and the cleanup hook...
[OK] Stopped target Initrd Default target.
[OK] Stopped target, Basic System.
[OK] Stopped target Sockets.
[OK] Stopped target System Initialization.
[OK] Stopped the Apply Kernel Variables.
Stopping the Apply Kernel Variables...
[OK] Stopped target Local File Systems.
[OK] Stopped target Swap.
Stopping udev Kernel Device Manager...
[OK] Stopped target Slices.
[OK] Stopped target Paths.
[OK] Stopped target Remote File Systems.
[OK] Stopped target Remote File Systems (Pre).
[OK] Stopped dracut initqueue hook.
Stopping dracut initqueue hook...
[OK] Stopped udev Coldplug all Devices.
Stopping udev Coldplug all Devices...
[OK] Stopped udev Kernel Device Manager.
[OK] Stopped the Create Static Device Nodes in/dev.
Stopping the Create Static Device Nodes in/dev...
[OK] Stopped the Create a list of the required sta... Ce nodes for the current kernel.
Stopping the Create a list of the required st... Nodes for the current kernel...
[OK] Stopped dracut pre - udev hook.
Stopping dracut pre - udev hook...
[OK] Stopped dracut cmdline hook.
Stopping dracut cmdline hook...
[OK] Closed udev Kernel Socket.
[OK] Closed udev Control Socket.
Starting the Cleanup udevd DB...
[OK] Started the Cleanup udevd DB.
[OK] Reached target Switch Root.
[OK] Started Plymouth switch root service.
Starting Switch Root...

Welcome to CentOS Linux 7 (Core)!

[OK] Stopped Switch Root.
[OK] Stopped Journal Service.
Starting Journal Service...
[OK] Listening on udev Kernel Socket.
[OK] Reached target Swap.
[OK] Set up automount Arbitrary Executab... Ats File System Automount Point.
[OK] Listening on Device - mapper daemon FIFOs event.
[OK] Listening on LVM2 metadata daemon socket.
[OK] Created slice system - serial \ x2dgetty. Slice.
[OK] Created slice User and Session slice.
[OK] Reached target Remote File Systems.
[OK] Reached target Slices.
Mounting the POSIX Message Queue File System...
[OK] Listening on of Shutdown Socket.
Starting the Apply Kernel Variables...
Starting Remount the Root and the Kernel File Systems...
[OK] Reached target Encrypted Volumes,
[OK] Created slice system - selinux \ x2dpol... Grate \ x2dlocal \ x2dchanges. Slice.
[OK] Listening on udev Control Socket.
Starting the Create a list of the required st... Nodes for the current kernel...
[OK] Listening on/dev/initctl Compatibility Named Pipe.
Mounting Huge Pages File System...
Starting Monitoring of LVM2 mirrors... Dmeventd or progress polling...
[OK] Stopped target Switch Root.
[OK] Stopped target Initrd Root File System.
[OK] Stopped target Initrd File Systems.
Mounting the Debug File System...
[OK] Created slice system - getty. Slice.
[OK] Listening on LVM2 poll daemon socket.
[OK] Mounted POSIX Message Queue File System.
[OK] Started Journal Service.
[OK] Started Apply Kernel Variables.
[OK] Started the Create a list of the required sta... Ce nodes for the current kernel.
Starting the Create Static Device Nodes in/dev...
[OK] Mounted the Debug File System.
[OK] Mounted Huge Pages File System.
[OK] Started Remount the Root and the Kernel File Systems.
Starting Flush Journal to Persistent Storage...
Starting the Configure the read - only the root support...
Starting the Load/Save the Random Seed...
Starting Rebuild the Hardware Database...
[OK] Started the Load/Save the Random Seed.
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