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Getting Started with Citrix NetScaler
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Deploy a Citrix NetScaler VPX instance
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Install a Citrix NetScaler VPX instance on Microsoft Hyper-V servers
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Install a NetScaler VPX instance on Linux-KVM platform
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Prerequisites for Installing NetScaler VPX Virtual Appliances on Linux-KVM Platform
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Provisioning the NetScaler Virtual Appliance by using OpenStack
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Provisioning the NetScaler Virtual Appliance by using the Virtual Machine Manager
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Configuring NetScaler Virtual Appliances to Use SR-IOV Network Interface
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Configuring NetScaler Virtual Appliances to use PCI Passthrough Network Interface
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Provisioning the NetScaler Virtual Appliance by using the virsh Program
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Deploying NetScaler VPX Instances on AWS
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Upgrade and downgrade a NetScaler appliance
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Overriding Static Proximity Behavior by Configuring Preferred Locations
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Example of a Complete Parent-Child Configuration Using the Metrics Exchange Protocol
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Configuring Global Server Load Balancing for DNS Queries with NAPTR records
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Using the EDNS0 Client Subnet Option for Global Server Load Balancing
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Persistence and persistent connections
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Advanced load balancing settings
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Gradually stepping up the load on a new service with virtual server–level slow start
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Protect applications on protected servers against traffic surges
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Use source IP address of the client when connecting to the server
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Set a limit on number of requests per connection to the server
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Configure automatic state transition based on percentage health of bound services
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Use case 2: Configure rule based persistence based on a name-value pair in a TCP byte stream
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Use case 3: Configure load balancing in direct server return mode
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Use case 6: Configure load balancing in DSR mode for IPv6 networks by using the TOS field
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Use case 7: Configure load balancing in DSR mode by using IP Over IP
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Use case 10: Load balancing of intrusion detection system servers
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Use case 11: Isolating network traffic using listen policies
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Use case 14: ShareFile wizard for load balancing Citrix ShareFile
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Configuring a CloudBridge Connector Tunnel between two Datacenters
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Configuring CloudBridge Connector between Datacenter and AWS Cloud
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Configuring a CloudBridge Connector Tunnel Between a Datacenter and Azure Cloud
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Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
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Configuring a CloudBridge Connector Tunnel Between a NetScaler Appliance and Cisco IOS Device
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CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Backup and restore
When your appliance gets corrupted or needs an upgrade, you can back up your system configuration. The procedure is done either through the Citrix CLI or GUI interface. The appliance also enables you to import the backup file from an external source. However, you can do this only through the GUI interface and there is no support through the CLI interface.
Points to remember:
- Sysid and Interfaces are the same.
- Network configuration is supported on new platform.
- new platform build is either same of backup file or higher version than it.
Back up a NetScaler appliance
Depending on the type of data to be backed up and the frequency at which you create a backup, you can take a basic backup or a full backup.
- Basic backup. Backs up only configuration files. You might want to perform the backup type frequently, because the files it backs up change constantly. The files that are backed up are:
For more information about the basic backup details, see the Table topic.
- Full backup. In addition to the files that are backed up by a basic backup, a full backup backs up some less frequently updated files. The files that are backed up when using the full backup option are:
Directory | Sub-Directory or Files |
---|---|
nsconfig |
ssl, license, fips* |
/var/ | netscaler/ssl/, wi/java_home/jre/lib/security/cacerts/, wi/java_home/lib/security/cacerts/* |
The backup is stored as a compressed TAR file in the /var/ns_sys_backup/
directory. To avoid issues due to non-availability of disk space, you can store a maximum of 50 backup files in this directory. You can use the rm system backup command to delete existing backup files so that you can create more backups.
Note:
While the backup operation is in progress, do not execute commands that affect the configuration.
If a file that is required to be backed up is not available, the operation skips that file.
To back up a NetScaler appliance
To back up the NetScaler by using the NetScaler command line interface
At the command prompt, do the following:
- Save the NetScaler configurations.
save ns config
- Create the backup file.
create system backup [<fileName>] -level <basic ¦ full> -comment <string>
Note:
If the file name is not specified, the appliance creates a TAR file with the following naming convention:
backup_<level>_<nsip_address>_<date-timestamp>.tgz
.
Example: To back up the full appliance using the default naming convention for the backup file.
> create system backup -level full
- Verify that the backup file was created.
show system backup
You can view properties of a specific backup file by using the file name parameter.
To back up the appliance by using the NetScaler GUI
Navigate to System > Backup and Restore, click Backup and then specify the details of the backup.
Restore a NetScaler appliance
Important
The restore operation does not succeed if the backup file is renamed or if the contents of the file are modified.
When you restore the appliance from a backup file, the restore operation untars the backup file into the /var/ns_sys_backup/
directory. Once the untar operation is complete, the files are copied to their respective directories.
To restore the NetScaler from a local backup file by using the command line interface
Note: Citrix recommends backing up the current configuration before restoring a previous configuration. However, if you do not want the restore command to automatically create a backup of the current configuration, use the –skipBackup parameter.
At the command prompt, do the following:
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Obtain a list of the backup files available on the appliance.
show system backup
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Restore the appliance by specifying one of the backup files.
restore system backup <filename> [-skipBackup]
Example: To restore by using a full backup of an appliance
> restore system backup backup_full_<nsip_address>_<date-timestamp>.tgz
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Reboot the appliance.
reboot
To backup and restore an appliance by using the NetScaler GUI
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Navigate to System > Backup and Restore.
- Click Backup/Import to start the process.
- In the Backup/Import page, select Create and set the following parameters.
- File name. Name of the backup file.
- Level. Select a backup level as basic or full.
- Comment. Provide a brief description for the backup.
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Click Backup.
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If you want to import a backup, you must select Import.
- Once backup is complete, you can select the file and click Download.
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To restore, select the backup file and click Restore.
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In the Restore page, verify backup file details and click Restore.
- After you restore, you must reboot the appliance.
For more information on how to backup and restore an SDX appliance, see Backup and restore SDX appliance
For information about operations performed on system backup, see System Backup topic.
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