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Getting Started with Citrix ADC
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Deploy a Citrix ADC VPX instance
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Install a Citrix ADC VPX instance on Microsoft Hyper-V servers
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Install a Citrix ADC VPX instance on Linux-KVM platform
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Prerequisites for Installing Citrix ADC VPX Virtual Appliances on Linux-KVM Platform
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Provisioning the Citrix ADC Virtual Appliance by using OpenStack
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Provisioning the Citrix ADC Virtual Appliance by using the Virtual Machine Manager
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Configuring Citrix ADC Virtual Appliances to Use SR-IOV Network Interface
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Configuring Citrix ADC Virtual Appliances to use PCI Passthrough Network Interface
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Provisioning the Citrix ADC Virtual Appliance by using the virsh Program
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Provisioning the Citrix ADC Virtual Appliance with SR-IOV, on OpenStack
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Configuring a Citrix ADC VPX Instance on KVM to Use OVS DPDK-Based Host Interfaces
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Deploy a Citrix ADC VPX instance on Microsoft Azure
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Network architecture for Citrix ADC VPX instances on Microsoft Azure
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Configure multiple IP addresses for a Citrix ADC VPX standalone instance
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Configure a high-availability setup with multiple IP addresses and NICs
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Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
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Configure HA-INC nodes by using the Citrix high availability template with Azure ILB
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Configure address pools (IIP) for a Citrix Gateway appliance
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Upgrade and downgrade a Citrix ADC appliance
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Solutions for Telecom Service Providers
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Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
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Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
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Authentication, authorization, and auditing application traffic
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Configuring authentication, authorization, and auditing policies
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Configuring Authentication, authorization, and auditing with commonly used protocols
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Use an on-premises Citrix Gateway as the identity provider for Citrix Cloud
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Troubleshoot authentication issues in Citrix ADC and Citrix Gateway with aaad.debug module
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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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Retrieve location details from user IP address using geolocation database
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Use source IP address of the client when connecting to the server
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Use client source IP address for backend communication in a v4-v6 load balancing configuration
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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 12: Configure Citrix Virtual Desktops for load balancing
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Use case 13: Configure Citrix Virtual Apps for load balancing
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Use case 14: ShareFile wizard for load balancing Citrix ShareFile
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Authentication and authorization
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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 Citrix ADC Appliance and Cisco IOS Device
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CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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How to free space on /var directory for logging issues with a Citrix ADC appliance
The following article explains how an administrator can free the space from the /var
directory of a Citrix ADC appliance. You can follow the steps when the Citrix GUI is not accessible.
When the amount of disk space is low in the /var
directory of the appliance, you might not be able to sign in to the Citrix GUI. In this scenario, you can remove the old log files to create free space in the /var
directory.
Points to remember
- Ensure that you back up the files before removing the files from the appliance.
To free space in the /var
directory of a Citrix ADC appliance, complete the following procedure:
- Log on to the CLI of Citrix ADC by using SSH. For more information to complete this task, see the Citrix ADC documentation.
- After you log on to Citrix ADC CLI, switch to the shell prompt using the following command.
shell
- Run the following command to see the availability of space on the Citrix ADC appliance.
df -h
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If the memory capacity of the
/var
directory is filled up to 90 percent, then you must delete few files from this directory.- Run the following commands to view the contents of the /var directory:
cd /var
ls -l
The directories that are usually of interest are as follows:
/var/nstrace - This directory contains trace files.This is the most common reason for HDD being filled on the Citrix ADC. This is due to an nstrace being left running for indefinite amount of time. All traces that are not of interest can and should be deleted. To stop an nstrace, go back to the CLI and issue stop nstrace command. /var/log - This directory contains system specific log files. /var/nslog - This directory contains Citrix ADC log files. /var/tmp/support - This directory contains technical support files, also known as, support bundles. All files not of interest should be deleted. /var/core - Core dumps are stored in this directory. There will be directories within this directory and they will be labeled with numbers starting with 1. These files can be quite large in size. Clear all files unless the core dumps are recent and investigation is required. /var/crash - Crash files, such as process crashes are stored in this directory. Clear all files unless the crashes are recent and investigation is required. /var/nsinstall - Firmware is placed in this directory when upgrading. Clear all files, except the firmware that is currently being used.
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Verify if any of the directories are using more space:
du -hs * 44k cache 2.0k clusterd 2.0k configdb 6.0k core 989M crash 4.0k cron 2.0k dev 6.0k download 2.0k gui 2.0k install 2.0k krb 2.0k learnt_data 122M log 366M netscaler 14k ns_gui 86k ns_sys_backup 631M nsinstall 883M nslog 32k nsproflog 2.0k nssynclog 16k nstemplates 36k nstmp 4.5G nstrace 8.1M opt 6.0k pubkey 52k run 28M safenet 72M tmp 2.0k vmtools 14k vpn
- Run the following commands to view the contents of the /var directory:
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Delete the files which are not required:
rm -r nstrace/*
For more help on deleting files see FreeBSD man Pages.
- If the log or
nslog
directory is using more space, then run the following commands to open the log directory and view its contents: - Delete the files which are not required.
rm -r nstrace/*
For more help on deleting files see FreeBSD man Pages. -
If the log or
nslog
directory is using more space, then run the following commands to open the log directory and view its contents:cd /var/log ls -l cd /var/nslog ls -l
- If the log or
- Ensure that all files are compressed. This is indicated by the .tar.gz file name extension.
- If you are using Citrix ADM, then verify the
/var/ns_system_backup
directory. Ensure that Citrix ADM clears the backup files it creates.
More resources
For information on any of the commands mentioned in the preceding procedure, see - http://ss64.com/bash/
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