Getting Started with Citrix ADC
Deploy a Citrix ADC VPX instance
Optimize Citrix ADC VPX performance on VMware ESX, Linux KVM, and Citrix Hypervisors
Apply Citrix ADC VPX configurations at the first boot of the Citrix ADC appliance in cloud
Install a Citrix ADC VPX instance on Microsoft Hyper-V servers
Install a Citrix ADC VPX instance on Linux-KVM platform
Prerequisites for Installing Citrix ADC VPX Virtual Appliances on Linux-KVM Platform
Provisioning the Citrix ADC Virtual Appliance by using OpenStack
Provisioning the Citrix ADC Virtual Appliance by using the Virtual Machine Manager
Configuring Citrix ADC Virtual Appliances to Use SR-IOV Network Interface
Configuring Citrix ADC Virtual Appliances to use PCI Passthrough Network Interface
Provisioning the Citrix ADC Virtual Appliance by using the virsh Program
Provisioning the Citrix ADC Virtual Appliance with SR-IOV, on OpenStack
Configuring a Citrix ADC VPX Instance on KVM to Use OVS DPDK-Based Host Interfaces
Deploy a Citrix ADC VPX instance on AWS
Deploy a VPX high-availability pair with elastic IP addresses across different AWS zones
Deploy a VPX high-availability pair with private IP addresses across different AWS zones
Configure a Citrix ADC VPX instance to use SR-IOV network interface
Configure a Citrix ADC VPX instance to use Enhanced Networking with AWS ENA
Deploy a Citrix ADC VPX instance on Microsoft Azure
Network architecture for Citrix ADC VPX instances on Microsoft Azure
Configure multiple IP addresses for a Citrix ADC VPX standalone instance
Configure a high-availability setup with multiple IP addresses and NICs
Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
Configure a Citrix ADC VPX instance to use Azure accelerated networking
Configure HA-INC nodes by using the Citrix high availability template with Azure ILB
Configure a high-availability setup with Azure external and internal load balancers simultaneously
Configure address pools (IIP) for a Citrix Gateway appliance
Upgrade and downgrade a Citrix ADC appliance
Solutions for Telecom Service Providers
Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
Authentication, authorization, and auditing application traffic
Basic components of authentication, authorization, and auditing configuration
On-premises Citrix Gateway as an identity provider to Citrix Cloud
Authentication, authorization, and auditing configuration for commonly used protocols
Troubleshoot authentication and authorization related issues
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Persistence and persistent connections
Advanced load balancing settings
Gradually stepping up the load on a new service with virtual server–level slow start
Protect applications on protected servers against traffic surges
Retrieve location details from user IP address using geolocation database
Use client source IP address for backend communication in a v4-v6 load balancing configuration
Set a limit on number of requests per connection to the server
Configure automatic state transition based on percentage health of bound services
Use case 2: Configure rule based persistence based on a name-value pair in a TCP byte stream
Use case 3: Configure load balancing in direct server return mode
Use case 6: Configure load balancing in DSR mode for IPv6 networks by using the TOS field
Use case 7: Configure load balancing in DSR mode by using IP Over IP
Use case 11: Isolating network traffic using listen policies
Use case 12: Configure Citrix Virtual Desktops for load balancing
Use case 13: Configure Citrix Virtual Apps for load balancing
Use case 14: ShareFile wizard for load balancing Citrix ShareFile
Use case 15: Configure layer 4 load balancing on the Citrix ADC appliance
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Authentication and authorization for System Users
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Configuring a CloudBridge Connector Tunnel between two Datacenters
Configuring CloudBridge Connector between Datacenter and AWS Cloud
Configuring a CloudBridge Connector Tunnel Between a Datacenter and Azure Cloud
Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
Configuring a CloudBridge Connector Tunnel Between a Citrix ADC Appliance and Cisco IOS Device
CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Synchronizing Configuration Files in a High Availability Setup
Restricting High-Availability Synchronization Traffic to a VLAN
Managing High Availability Heartbeat Messages on a Citrix ADC Appliance
Remove and Replace a Citrix ADC in a High Availability Setup
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Remove and Replace a Citrix ADC in a High Availability Setup
This topic helps you to address RMA replacements. Also, this topic has instructions on how to backup configurations, upgrade or downgrade shipped software version, and setup of RPC password on ADC.
Points to Consider
The following configurations are not synchronized or propagated in a high availability configuration in INC (Independent Network Configuration) or non-INC mode:
- All node specific HA configuration commands. For example, add ha node, set ha node, and bind ha node.
- All Interface related configuration commands. For example, set interface and unset interface.
- All channel related configuration commands. For example, add channel, set channel, and bind channel.
- All Interface HA Monitoring configuration commands.
The following configurations are not synced nor propagated in an HA configuration in INC mode (Independent Network Configuration):
- SNIPs
- VLANs
- Routes (except LLB routes)
- Route monitors
- RNAT rules (except any RNAT rule with VIP as the NAT IP)
- Dynamic routing configurations
Instructions
Complete the following steps to replace a Citrix ADC in high availability setup:
- Remove an Active Citrix ADC secondary node
- Configure Replacement secondary node
- Verify and Update the Software Build on Replacement ADC
- Set Password on New secondary to Match primary
- Add Licenses to Replacement ADC
- Creating HA Pair between primary and New secondary node
Remove an Active Secondary Node
Log on to both ADCs and run the following command to confirm which node is primary and which node is secondary:
show ha node
Log on to the primary ADC, backup the configurations on the primary node, and copy the files off of the ADC prior to the changes. These files are located under “/var /ns_sys_backup/” directory.
The steps are as follows:
Save the ADC running configurations to memory:
save ns config
Create the full backup file package:
create system backup -level full
Create the basic backup file package:
create system backup -level basic
After all backup files have been generated, be sure to copy them off of the device before proceeding.
From a windows terminal, open a Command Prompt and copy the backup files off of the ADC and onto your local hard drive. This can be done using the following command:
pscp
@ : Example:
pscp nsroot@10.125.245.78:/var/ns_sys_backup/backup_basic_10.125.245.78_2016_09_14_15_08.tgz c:\nsbackup\backup_basic_10.125.245.78_2016_09_14_15_08.tgz
When prompted, enter the password for the specified administrator account, then hit Enter. Repeat these steps until all backup bundles are copied to the local PC before proceeding.
SSH into the secondary ADC, and set the unit to the “STAYSECONDARY” status. This will force the unit to not attempt to assume the primary role in the event of a detected failure during the swap. Confirm that you are connected to the secondary ADC before executing this step
set ha node –haStatus
set ha node –haStatus STAYSECONDARY Once the secondary ADC’sNode Statesuccessfully displays STAYSECONDARY, switch to the primary ADC and delete the secondary node and run the following command:
save ns config
While logged into the primary ADC, run the following commands
Run the following command to identify which numerical value represents the secondary HA node:
show ha node
Run the following command to remove the secondary ADC from the primary HA pair;
rm ha node
Run the following command to save the configuration:
save ns config
With the secondary ADC now removed, shutdown, disconnect, and remove the secondary ADC from the network.
Note. Be sure to label all connections before disconnecting.
Configure Replacement Secondary Node
With the replacement ADC in place, power up the new device. DO NOT CONNECT the network connections at this point.
With boot-up complete, use the console port to connect to the ADC and configure the NSIP that you will use to connect to the unit.
When prompted, select4.
Note.In this example, we are using a different NSIP for the replacement ADC. If you wish to use the original secondary unit’s IP, You may change it on the replacement before binding the new ADC to the primary HA unit.
The ADC should now be booted. Now connect the network interface that will be used for Management traffic, and confirm that the IP address is reachable from your network.
Verify and Update the Software Build on Replacement ADC
Before syncing the new unit to the primary ADC, we need to ensure that both ADCs are running the same build.
To verify the version on ADC run the following command:
show version
While on the new secondary ADC, create a subfolder in/varto be used for the upgrade.
Go toCitrix Downloadsand download the appropriate package that matches the build version running on the primary ADC.
Download and extract the .tgz file:
tar -xvzf "file.tgz"
Copy the extracted files to the secondary ADC. On your windows terminal, open a “Command Prompt” and navigate to the directory containing the extracted .tgz build package and run the following pscp command:
pscp
@ : Example:
C:\inetpub>pscp c:\inetpub\build-12.1-47.14_nc.tgz nsroot@10.20.245.80:/var/NS_upg_12.1_47.14/build-12.1-47.14_nc.tgz
After the file has been transferred, return to the secondary ADC and upgrade. For detailed instructions, seeUpgrading a Citrix ADX Standalone Appliance.
Once the new secondary has rebooted, SSH back into the unit and confirm that the upgrade is successful and the build matches that of the primary.
Set Password on Replacement Secondary Node to Match Primary
Note: If at this point you want to change the management IP (NSIP) address of the new secondary ADC, you may do so before moving forward.
Change the password on the new secondary ADC to match the password that is currently on the primary ADC.
Make that the default administrator (nsroot) account password is the same as the primary ADC. This is accomplished using the following command while logged in through SSH into the new secondary unit:
set system user
This command set/resets the password for the specified user.
SSH into the primary and new secondary ADC and confirm that passwords match.
Add Licenses to Replacement Secondary Node
With the new ADC updated and ready for pairing, download and install the appropriate licensing for the replacement node.
Navigate tohttps://www.citrix.comto request and download licenses for the new replacement unit.
Once you have all appropriate licenses downloaded, SSH into the new secondary ADC and type the following command to see the current state of licensing:
show license
From the Windows terminal command prompt you must now upload the license files to the new secondary ADC using the following command:
Note. If you have multiple licenses, repeat this step until all licenses are uploaded.
pscp
@ : Example:
C:\inetpub>pscp c:\inetpub\NS-VPX-3K-LIC-020030ad0024.lic nsroot@10.125.245.80:/nsconfig/license/NS-VPX-3K-LIC-020030ad0024.lic
SSH into the new secondary ADC and perform a warm reboot using the following command:
reboot –w
After the unit is restarted, SSH into the unit and run show license command once again. At this point, the licenses should be applied.
Set up High Availability between primary and New Secondary Node
At this point, we are now ready to join the Citrix ADC units into a high availability pair. For more information, seeConfiguring high availability.
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In this article
- Points to Consider
- Instructions
- Remove an Active Secondary Node
- Configure Replacement Secondary Node
- Verify and Update the Software Build on Replacement ADC
- Set Password on Replacement Secondary Node to Match Primary
- Add Licenses to Replacement Secondary Node
- Set up High Availability between primary and New Secondary Node
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