Netscaler on AWS unable to perform DNS queries to locally configured DNS

Netscaler on AWS unable to perform DNS queries to locally configured DNS

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Article ID: CTX219782

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Description

We have Netscaler VPX deployed in AWS and have added DNS address records to it locally. However, it is unable to resolve those names. We do not detect this issue with our on-premise non AWS Netscalers. 

Resolution

The behavior on AWS differs to a tradition VPX and physical appliances

On AWS the NetScaler auto detects DNS server from the DHCP request sent our during boot. This is programmed into the /etc/resolv.conf. and its added to the resolv.conf file on the netscaler.

Check if the resolv.conf file (find / -name resolv*.* - shell command to find the resolv.conf file) has the DNS record for local DNS. If not, please modify the file and add the DNS namservers there.

Problem Cause

DNS on AWS not working