The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
Administrator's Solutions Guide
E37355-71
March 2021
Table of Contents
- Preface
- 1 The Unbreakable Enterprise Kernel
- 2 Yum
- 2.1 About Yum
- 2.2 About ULN
- 2.3 Yum Configuration
- 2.4 Using Yum from the Command Line
- 2.5 Yum Groups
- 2.6 Installing and Using the Yum Security Plugin
- 2.7 Switching CentOS or Scientific Linux Systems to Use the Oracle Linux Yum Server
- 2.8 Creating and Using a Local ULN Mirror
- 2.9 Creating a Local Yum Repository Using an ISO Image
- 2.10 Setting up a Local Yum Server Using an ISO Image
- 2.11 For More Information About Yum
- 3 Ksplice
- 4 The Btrfs File System
- 4.1 About the Btrfs File System
- 4.2 Creating a Btrfs File System
- 4.3 Modifying a Btrfs File System
- 4.4 Compressing and Defragmenting a Btrfs File System
- 4.5 Resizing a Btrfs File System
- 4.6 Creating Subvolumes and Snapshots
- 4.7 Using the Send/Receive Feature
- 4.8 Using Quota Groups
- 4.9 Replacing Devices on a Live File System
- 4.10 Creating Snapshots of Files
- 4.11 Converting an Ext2, Ext3, or Ext4 File System to a Btrfs File System
- 4.12 Installing a Btrfs root File System
- 4.12.1 Setting up a New NFS Server
- 4.12.2 Configuring an Existing NFS Server
- 4.12.3 Setting up a New HTTP Server
- 4.12.4 Configuring an Existing HTTP Server
- 4.12.5 Setting up a Network Installation Server
- 4.12.6 Installing from a Network Installation Server
- 4.12.7 About the Installation root File System
- 4.12.8 Creating Snapshots of the root File System
- 4.12.9 Mounting Alternate Snapshots as the root File System
- 4.12.10 Deleting Snapshots of the root File System
- 5 The XFS File System
- 5.1 About the XFS File System
- 5.2 Installing the XFS Packages
- 5.3 Creating an XFS File System
- 5.4 Modifying an XFS File System
- 5.5 Growing an XFS File System
- 5.6 Freezing and Unfreezing an XFS File System
- 5.7 Setting Quotas on an XFS File System
- 5.8 Backing up and Restoring XFS File Systems
- 5.9 Defragmenting an XFS File System
- 5.10 Checking and Repairing an XFS File System
- 6 Oracle Cluster File System Version 2
- 6.1 About OCFS2
- 6.2 Installing and Configuring OCFS2
- 6.2.1 Preparing a Cluster for OCFS2
- 6.2.2 Configuring the Firewall
- 6.2.3 Configuring the Cluster Software
- 6.2.4 Creating the Configuration File for the Cluster Stack
- 6.2.5 Configuring the Cluster Stack
- 6.2.6 Configuring the Kernel for Cluster Operation
- 6.2.7 Starting and Stopping the Cluster Stack
- 6.2.8 Creating OCFS2 volumes
- 6.2.9 Mounting OCFS2 Volumes
- 6.2.10 Querying and Changing Volume Parameters
- 6.3 Troubleshooting OCFS2
- 6.4 Use Cases for OCFS2
- 6.5 For More Information About OCFS2
- 7 Control Groups
- 8 Linux Containers
- 8.1 About Linux Containers
- 8.2 Configuring Operating System Containers
- 8.3 Logging in to Containers
- 8.4 Creating Additional Containers
- 8.5 Monitoring and Shutting Down Containers
- 8.6 Starting a Command Inside a Running Container
- 8.7 Controlling Container Resources
- 8.8 Configuring ulimit Settings for an Oracle Linux Container
- 8.9 Configuring Kernel Parameter Settings for Oracle Linux Containers
- 8.10 Deleting Containers
- 8.11 Running Application Containers
- 8.12 For More Information About Linux Containers
- 9 HugePages
- 10 Using kexec for Fast Rebooting
- 11 DTrace
- 11.1 About DTrace
- 11.2 Installing and Configuring DTrace
- 11.3 Differences Between DTrace on Oracle Linux and Oracle Solaris
- 11.4 Calling DTrace from the Command Line
- 11.5 About Programming for DTrace
- 11.6 Introducing the D Programming Language
- 11.7 DTrace Command Examples
- 11.8 Tracing User-Space Applications
- 11.9 For More Information About DTrace
- 12 Support Diagnostic Tools