Oracle linux network manager
- Preface
- System Configuration
- Yum
- About Yum
- About ULN
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- Downloading the Oracle Linux Yum Server Repository Files
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- Overview of Oracle Ksplice
- Supported Kernels
- About Ksplice Updates
- Patching and Updating Your System
- About the Ksplice Enhanced Client
- About the Ksplice Uptrack Client
- About the Boot Process
- About the GRUB Boot Loader
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- About the Service Configuration GUI
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- About /etc/sysconfig Files
- About the /proc Virtual File System
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- Changing Kernel Parameters
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- About Automating Tasks
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- About sosreport
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- About Performance Problems
- Monitoring Usage of System Resources
- Monitoring CPU Usage
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- Monitoring Network Usage
- Installing OSWbb
- Running OSWbb
- Analyzing OSWbb Archived Files
- About Kdump
- Configuring and Using Kdump
- Files Used by Kdump
- Using Kdump with OCFS2
- Using Kdump with a System Hang
- Installing the crash Packages
- Running crash
- Kernel Data Structure Analysis Commands
- System State Commands
- Helper Commands
- Session Control Commands
- Guidelines for Examining a Dump File
- About cgroups
- Subsystems
- blkio Parameters
- cpu Parameters
- cpuacct Parameters
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- devices Parameters
- freezer Parameter
- memory Parameters
- net_cls Parameter
- Pinning Processes to CPU Cores
- Controlling CPU and Memory Usage
- Restricting Access to Devices
- Throttling I/O Bandwidth
- Network Configuration
- About Network Interfaces
- About Network Configuration Files
- About the /etc/hosts File
- About the /etc/nsswitch.conf File
- About the /etc/resolv.conf File
- About the /etc/sysconfig/network File
- Using ifenslave to Create Bonded Interfaces
- Using vconfig to Create VLAN Devices
- About the Dynamic Host Configuration Protocol
- Configuring a DHCP Server
- Configuring a DHCP Client
- About Network Address Translation
- About DNS and BIND
- About Types of Name Servers
- About DNS Configuration Files
- About the /etc/named.conf File
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- About the NTP Daemon
- Configuring the ntpd Service
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- About the Apache HTTP Server
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- About HAProxy
- Installing and Configuring HAProxy
- About the HAProxy Configuration File
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- About the Keepalived Configuration File
- Configuring Firewall Rules for Keepalived NAT-Mode Load Balancing
- Configuring Back-End Server Routing for Keepalived NAT-Mode Load Balancing
- Configuring Firewall Rules for Keepalived DR-Mode Load Balancing
- Configuring the Back-End Servers for Keepalived DR-Mode Load Balancing
- Storage Management
- About Disk Partitions
- Managing Partition Tables Using fdisk
- Managing Partition Tables Using parted
- Mapping Partition Tables to Devices
- Viewing Swap Space Usage
- Creating and Using a Swap File
- Creating and Using a Swap Partition
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- Initializing and Managing Physical Volumes
- Creating and Managing Volume Groups
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- Creating Software RAID Devices
- Configuring an iSCSI Target
- Configuring an iSCSI Initiator
- Updating the Discovery Database
- Configuring Multipathing
- Making File Systems
- Mounting File Systems
- About Mount Options
- Changing the Frequency of File System Checking
- Configuring ACL Support
- Setting and Displaying ACLs
- Enabling Disk Quotas on File Systems
- Assigning Disk Quotas to Users and Groups
- Setting the Grace Period
- Displaying Disk Quotas
- Enabling and Disabling Disk Quotas
- Reporting on Disk Quota Usage
- Maintaining the Accuracy of Disk Quota Reporting
- About Local File Systems
- About the Btrfs File System
- Creating a Btrfs File System
- Modifying a Btrfs File System
- Compressing and Defragmenting a Btrfs File System
- Resizing a Btrfs File System
- Creating Subvolumes and Snapshots
- Cloning Virtual Machine Images and Linux Containers
- Using Send/Receive to Implement Incremental Backups
- Converting a Non-root File System
- Converting the root File System
- Mounting the Image of the Original File System
- Deleting the Snapshot of the Original File System
- Recovering an Original Non-root File System
- Setting up a New NFS Server
- Configuring an Existing NFS Server
- Setting up a New HTTP Server
- Configuring an Existing HTTP Server
- Setting up a Network Installation Server
- Installing from a Network Installation Server
- About the Installation root File System
- Creating Snapshots of the root File System
- Mounting Alternate Snapshots as the root File System
- Deleting Snapshots of the root File System
- About External XFS Journals
- About XFS Write Barriers
- About Lazy Counters
- Setting Project Quotas
- About Shared File Systems
- About NFS
- Configuring an NFS Server
- Mounting an NFS File System
- Configuring a Samba Server
- About Samba Configuration for Windows Workgroups and Domains
- Configuring Samba as a Standalone Server
- Configuring Samba as a Member of an ADS Domain
- Configuring Samba as a Member of a Windows NT4 Security Domain
- About OCFS2
- Installing and Configuring OCFS2
- Preparing a Cluster for OCFS2
- Configuring the Firewall
- Configuring the Cluster Software
- Creating the Configuration File for the Cluster Stack
- Configuring the Cluster Stack
- Configuring the Kernel for Cluster Operation
- Starting and Stopping the Cluster Stack
- Creating OCFS2 volumes
- Mounting OCFS2 Volumes
- Querying and Changing Volume Parameters
- Recommended Tools for Debugging
- Mounting the debugfs File System
- Configuring OCFS2 Tracing
- Debugging File System Locks
- Configuring the Behavior of Fenced Nodes
- Load Balancing
- Oracle Real Application Cluster (RAC)
- Oracle Databases
- Authentication Configuration
- About Authentication
- About Local Oracle Linux Authentication
- Configuring Local Access
- Configuring Fingerprint Reader Authentication
- Configuring Smart Card Authentication
- Configuring IPA
- About LDAP Data Interchange Format
- Configuring an LDAP Server
- Replacing the Default Certificates
- Creating and Distributing Self-signed CA Certificates
- Initializing an Organization in LDAP
- Adding an Automount Map to LDAP
- Adding a Group to LDAP
- Adding a User to LDAP
- Adding Users to a Group in LDAP
- Enabling LDAP Authentication
- Configuring an LDAP Client to use SSSD
- Configuring an LDAP Client to Use Automount Maps
- About NIS Maps
- Configuring a NIS Server
- Adding User Accounts to NIS
- Enabling NIS Authentication
- Configuring a NIS Client to Use Automount Maps
- Configuring a Kerberos Server
- Configuring a Kerberos Client
- Enabling Kerberos Authentication
- Configuring Pluggable Authentication Modules
- Configuring an SSSD Server
- Enabling Winbind Authentication
- About User and Group Configuration
- Changing Default Settings for User Accounts
- Creating User Accounts
- About umask and the setgid and Restricted Deletion Bits
- About System Security
- Configuring and Using SELinux
- About SELinux Administration
- About SELinux Modes
- Setting SELinux Modes
- About SELinux Policies
- Targeted Policy
- Multilevel Security (MLS) Policy
- Setting SELinux Policies
- Customizing SELinux Policies
- Displaying SELinux User Mapping
- Displaying SELinux Context Information
- Changing the Default File Type
- Restoring the Default File Type
- Relabelling a File System
- Mapping Oracle Linux Users to SELinux Users
- Configuring the Behavior of Application Execution for Users
- Controlling the Firewall Service
- Listing Firewall Rules
- Inserting and Replacing Rules in a Chain
- Deleting Rules in a Chain
- Saving Rules
- Running DNS and FTP Services in a Chroot Jail
- Creating a Chroot Jail
- Using a Chroot Jail
- Configuring Logwatch
- Minimizing the Software Footprint
- Configuring System Logging
- Disabling Core Dumps
- Minimizing Active Services
- Locking Down Network Services
- Configuring a Packet-filtering Firewall
- Configuring TCP Wrappers
- Configuring Kernel Parameters
- Restricting Access to SSH Connections
- Configuring File System Mounts, File Permissions, and File Ownerships
- Checking User Accounts and Privileges
- Configuring User Authentication and Password Policies
- About OpenSSH
- OpenSSH Configuration Files
- OpenSSH User Configuration Files
- User Configuration Files in ~/.ssh on the Client
- User Configuration Files in ~/.ssh on the Server
- Using ssh to Connect to Another System
- Using scp and sftp to Copy Files Between Systems
- Using ssh-keygen to Generate Pairs of Authentication Keys
- Enabling Remote System Access Without Requiring a Password
- Linux Containers
- About Linux Containers
- Supported Oracle Linux Container Versions
- Installing and Configuring the Software
- Setting up the File System for the Containers
- Creating and Starting a Container
- About the lxc-oracle Template Script
- About Veth and Macvlan
- Modifying a Container to Use Macvlan
- Modifying a Container to Use a Static IP Address
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.11.4 Configuring Network Interfaces Using Graphical Interfaces
The NetworkManager service, Gnome graphical applet, and the nm-connection-editor command are included in the NetworkManager package. The system-config-network utility is included in the system-config-network-tui package.
The NetworkManager service dynamically detects and configures network connections. It includes a GNOME Notification Area applet ( nm-applet )that provides you with information about the network status and graphical configuration tools to manage network interfaces and connections.
The applet icon changes its appearance indicate the state of the network. Hover the mouse pointer over the icon to display more information as a tool tip. Clicking the icon displays a drop-down menu that allows you to restart or disconnect each named interface.
Right-clicking the icon displays a different drop-down menu:
Allows you to stop or start the network service.
Enable Notifications
Controls whether NetworkManager notifies you of changes to the status of network connections.
Connection Information
Displays the Connection Information window, which lists the connection type, hardware address, IP address, and other useful information for each interface.
Edit Connections
Displays the Network Connections window, which allows you to configure wired, wireless, mobile broadband, Virtual Private Network (VPN), and Digital Subscriber Link (DSL) interfaces. You can also open this window by using the nm-connection-editor command.
Figure 11.1 shows the Network Connections window with the Wired tab selected.
Figure 11.1 Network Connections Window
You can also use the system-config-network command, which provides a text-based user interface that allows you to configure network interface and DNS resolver settings.
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