OPS535 Resource

NIS and LDAP

• OpenLDAP Admin

Email Systems

• email server market share

Cluster

• High Availablity Clustering

Reference

• The Practice of Cloud System Administration: Designing and Operating Large Distributed Systems, Volume 2
• Red Hat Enterprise Linux Server Cookbook
• Red Hat Enterprise Linux 6 Administration: Real World Skills for Red Hat Administrators

Troubleshooting

• Red Hat Enterprise Linux Troubleshooting Guide
• MBR/GPT/BIOS/UEFI
• System Crash with message failed to open \efi\redhat\grubx64.efi

How to fix Grub with UEFI boot

• Boot with Live cd/dvd
• mount / (root) partition to /mnt
• mount /boot partition to /mnt/boot
• mount /boot/efi (efi system partition ESP) partition to /mnt/boot/efi
• execute chroot /mnt
• os-prober
• grub2-mkconfig -o /boot/grub/grub.cfg
• grub2-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=Antergos-grub