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Red Hat Enterprise Linux Troubleshooting Guide

You're reading from   Red Hat Enterprise Linux Troubleshooting Guide Identify, capture and resolve common issues faced by Red Hat Enterprise Linux administrators using best practices and advanced troubleshooting techniques

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Product type Paperback
Published in Oct 2015
Publisher
ISBN-13 9781785283550
Length 458 pages
Edition 1st Edition
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Author (1):
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Benjamin Cane Benjamin Cane
Author Profile Icon Benjamin Cane
Benjamin Cane
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Table of Contents (14) Chapters Close

Preface 1. Troubleshooting Best Practices 2. Troubleshooting Commands and Sources of Useful Information FREE CHAPTER 3. Troubleshooting a Web Application 4. Troubleshooting Performance Issues 5. Network Troubleshooting 6. Diagnosing and Correcting Firewall Issues 7. Filesystem Errors and Recovery 8. Hardware Troubleshooting 9. Using System Tools to Troubleshoot Applications 10. Understanding Linux User and Kernel Limits 11. Recovering from Common Failures 12. Root Cause Analysis of an Unexpected Reboot Index

Making mounts permanent


Currently, even though we mounted the NFS share with the mount command, this mounted filesystem is not considered persistent. The next time this system reboots, the NFS mount will not be remounted.

That is because as a system boots up, part of the boot process is to read the /etc/fstab file and mount any filesystems defined within it.

To better understand how this works, let's look at the /etc/fstab file on the database server:

[db]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Mon Jul 21 23:35:56 2014
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/os-root /                       xfs     defaults        1 1
UUID=be76ec1d-686d-44a0-9411-b36931ee239b /boot                   xfs     defaults        1 2
/dev/mapper/os-swap swap                    swap    defaults        0 0
192.168.33.13:/nfs  /data      nfs  defaults  0 0

The contents of the...

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