Oracle Enterprise Linux 5 & 6 System Administration

Course:  OELADM
Duration:  5 Days
Level:  II
Course Summary

This five day course covers essential administration skills including local storage administration; network and network services configuration; remote access using SSH, VNC, FTP; web services configuration; firewall and basic SELinux management; installing the OS interactively, plus Oracle-specific topics including the Unbreakable Linux Kernel, Ksplice kernel updates, and Oracle's involvement and history with Linux.

It is intended for those who have previous Linux, Solaris or UNIX experience and are comfortable using the command line and editing text files.

The course is fairly intensive, but provides ample time for putting skills into practice. This course helps with the preparation for several certifications, but is aimed mainly at Oracle Certified Associate, Oracle Linux 5 and 6 Administrator (Pearson VUE exam code 1Z0-100).

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Topics Covered In This Course

Network configuration

  • Examine and configure network interface settings.
  • Manage routes.
  • Manage on-demand services.
  • Use manual and NetworkManager (GUI) configuration techniques.
  • Troubleshoot network problems.
  • Monitor network activity.

System configuration

  • The /etc/sysconfig directory and configuration files.
  • The /proc and /sys file systems.
  • The sysctl utility and /etc/sysctl.conf.
  • System time configuration with hwclock and NTP.

User and Group management

  • Create and manage user accounts and groups.
  • User Private Groups.
  • User Management tools.
  • sudo configuration.

System resource and Log management

  • Schedule regular tasks using crontab and anacron.
  • The batch and at utilities.
  • Manage access to cron.
  • Examine and manage system logs. rsyslog.conf.
  • Facility and priority filters.
  • Templates.
  • Log rotation and logrotate.

System Monitoring

  • Using a variety of utilities including mpstat, iosstat, vmstat, top, iotop, sar, netstat and tcpdump.
  • The sosreport utility.
  • tshark and wireshark for network monitoring.
  • OSWatcher Black Box (oswbb) and OSWatcher Black Box Analyser. (oswbba).
  • Spacewalk from RedHat.
  • Overview of Oracle Ops Center Management software.

Security Administration

  • The chroot command.
  • Create a chroot jail.
  • Further security topics such as Firewall, SELinux and TCP wrappers.

PAM Authentication

  • Pluggable Authentication Modules and their role in system authentication.
  • PAM module types.
  • PAM control flags.
  • PAM examples including login, su and reboot authentications.

Software package management

  • Examine installed software, query software, install/remove software using rpm and yum.
  • How yum repositories work.
  • Oracle public yum service.
  • Create a custom repository.
  • Unbreakable Linux Network and ULN channels.
  • Create a local ULN mirror.
  • Switch from RedHat network to ULN.

Access remote systems

  • Access remote systems using SSH, VNC (graphical access), and VSFTP.
  • Configuring key-based SSH authentication.
  • ssh-add and ssh-agent.

Deploy and secure file-sharing services

  • Configure essential network services, including iptables firewall configuration.
  • NFS server and client configuration.
  • NFS automounter.

Managing SELinux

  • Display and manage SELInux facilities such as booleans and file system contexts.
  • Debug errors caused by SELinux.

Managing basic disk partitions and EXT file systems

  • Add new disks
  • file system types
  • create and tune file systems
  • mount file systems
  • manage swap space.

Storage Administration including Logical volume management

  • Logical volume concepts.
  • Physical components.
  • Volume Groups.
  • Create and manage linear and mirrored logical volumes.

Extending volumes.

  • Creating snapshots.
  • Linux RAID levels using mdadm.

The boot process

  • The init (upstart) process and runlevels.
  • The GRUB bootloader configuration and security.
  • Shutting down the system correctly.
  • xinetd on-demand services and TCP wrappers.

Linux Kernel Development = The development model.

  • Oracle and its commitment to Linux, and the contributions they have made.
  • The Oracle Unbreakable Enterprise Kernel (UEK).

Kernel modules

  • Loadable modules.
  • Using lsmod amd modinfo.
  • The modprobe utility.
  • Loading/unloading modules.
  • Using parameters with kernel modules.
  • ASM Cluster File System and ASM Dynamic Volume Manager modules.

The Oracle database on OEL - management tasks

  • Creating appropriate oracle users and groups.
  • Installing the correct system and network resource controls.
  • Shared memory, semaphores, async IO and file handle parameters.
  • Examine and set shell limits.
  • Memory configuration of Linux HugePages.
  • Introduction to Oracle ASM.

OEL Interactive installations.

  • Obtaining Oracle Linux.
  • The Oracle software delivery cloud.
  • Performing an installation with the anaconda installer.
  • The firstboot tool.
What You Can Expect

At the end of this course, delegates will be able to:

  • Manage network and network services configuration.
  • Perform user and group administration.
  • Configure and manage system logging, and regular maintenance jobs with cron,
  • Use Linux security features such as chroot, iptables firewall and PAM (Pluggable Authentication Modules) authentication.
  • Understand the use of the SELinux security layer.
  • Access remote systems with Secure Shell, VNC (Graphical login) and VSFTP.
  • Deploy secure file sharing services with NFS (Network File System).
  • Manage local disk storage, including logical volumes and Linux RAID.
  • Perform kernel management functions and be aware of Linux kernel development and the development model.
  • Manage the boot process, including the GRUB bootloader and the upstart system, plus on-demand network services and the TCP wrappers security feature.
  • Obtain Oracle Linux from the Oracle Deliver Cloud; Install Oracle Linux interactively; become familiar with the firstboot process post-install.
  • Preparation and configuration required to run an Oracle database on Oracle Enterprise Linux, such as creating appropriate users and groups, shell limits, shared memory and hugepages.
  • Monitor the system with a variety of operating system tools, and be aware of more comprehensive monitoring tools available such as SAR (System Activity Reporter), OSWatcher Black Box, Spacewalk and Ops Center.
Who Should Take This Course

Those wishing to become proficient in day-to-day management of Oracle Linux servers, and aspiring to achieve Oracle Certified Associate, Oracle Linux 5 and 6 Administrator certification via the PearsonVUE 1Z0_100 exam.

Recommended Prerequisites

Proficient with UNIX/Linux file system navigation, the shell command line and editing text files. Some previous system administration experience would be helpful.

Training Style

Instructor-led with 65% lecture and 35% hands-on workshops.

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