Citrix ADC BLX cluster
A Citrix ADC BLX cluster is a group of Citrix ADC BLX appliances working together as a single system. Each appliance of the cluster is called a node. A Citrix ADC BLX cluster can include as few as 1 or as many as 32 Citrix ADC BLX appliances as nodes.
Before you begin
This section lists prerequisites and points to note for setting up a Citrix ADC BLX cluster:
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Make sure that you understand the Citrix ADC cluster feature. For more information, see Citrix ADC Cluster.
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Make sure that the following configurations are present on each Linux host of the Citrix ADC BLX appliances:
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NTP is configured on each Linux host:
- For more information about configuring NTP on Oracle Linux, see Official Oracle Linux documentation.
- For more information about configuring NTP on Ubuntu Linux, see Official Ubuntu Linux documentation.
- For more information about configuring NTP on CentOS Linux, see Official CentOS Linux documentation.
- Core dump is enabled on each Linux host for generating core dumps whenever the Citrix ADC BLX appliance crashes.
- Logging and
rsyslogsettings to reduce repeated log messages are configured on each Linux host for logs related to the Citrix ADC BLX appliance.
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- Cluster is supported for Citrix ADC BLX appliances only in dedicated mode.
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All general prerequisites of a Citrix ADC cluster apply to Citrix ADC BLX cluster as well.
For more information about general prerequisites for setting up a Citrix ADC BLX cluster, see General Prerequisites for Citrix ADC cluster.
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For information about the Citrix ADC features supported in a Citrix ADC BLX cluster, see Citrix ADC features supportability matrix for Citrix ADC BLX cluster.
- For information about automating Citrix ADC deployments using Terraform, see:
Limitations of a Citrix ADC BLX cluster
A Citrix ADC BLX cluster has the following limitations:
- INC mode is not supported.
- CLAG based traffic distribution is not supported.
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All limitations of a standalone Citrix ADC BLX appliance apply to a Citrix ADC BLX cluster as well.
For more information about limitations of a Citrix ADC BLX appliance, see Citrix ADC BLX limitations.
Setting up a Citrix ADC BLX cluster
For setting up a Citrix ADC BLX cluster, follow the general procedure for setting up a Citrix ADC cluster at Citrix ADC Cluster. This docs set contains general information about Citrix ADC clusters. The information in this docs set applies for Citrix ADC BLX cluster as well.