VMware

Deploying vRealize Log Insight 8.1 with vRealize Suite Lifecycle Manager 8.1? Look Out for Error LCMVRLICONFIG40091!

vRealize Log Insight Clustering: Resolving DNS Issues with VIPs

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When deploying a vRealize Log Insight (vRLI) cluster with a Virtual IP (VIP) using vRealize Suite Lifecycle Manager 8.1, you may encounter an error message related to the DNS records of the VIP. This issue can be caused by a variety of factors, including misconfigured forward and reverse DNS records. However, in this blog post, we will focus on a specific scenario where the IP addresses of the vRLI node and the vRLI VIP are not in the same subnet.

Symptoms and Diagnosis

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When deploying the vRLI cluster with a VIP, you may encounter an error message that looks something like this:

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Error: The virtual IP address (VIP) is not configured correctly. Please ensure that the forward and reverse DNS records for the VIP are correct.

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This error message suggests that there is an issue with the DNS records of the VIP, but what if you have already verified that the forward and reverse DNS records are correct? In our case, we encountered this issue when deploying a vRLI cluster with a VIP, and we discovered that the IP addresses of the vRLI node and the vRLI VIP were not in the same subnet.

Resolution

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To resolve this issue, you need to ensure that the IP addresses of the vRLI node and the vRLI VIP are in the same subnet. This can be achieved by modifying the network configuration of the vRLI node to match the subnet of the vRLI VIP. Once we made this change, the vRLI cluster deployed successfully with the VIP.

Here are the steps you can follow to resolve this issue:

1. Verify that the forward and reverse DNS records for the VIP are correct.

2. Check the subnet settings of the vRLI node and the vRLI VIP. If they are not in the same subnet, proceed to step 3.

3. Modify the network configuration of the vRLI node to match the subnet of the vRLI VIP. This may involve changing the subnet mask, gateway IP address, or DNS server settings.

4. Once you have modified the network configuration, try deploying the vRLI cluster again with the VIP.

Conclusion

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In this blog post, we discussed a specific scenario where the IP addresses of the vRLI node and the vRLI VIP are not in the same subnet, leading to issues with the deployment of the vRLI cluster with a VIP using vRealize Suite Lifecycle Manager 8.1. We also provided steps to resolve this issue by ensuring that the IP addresses of the vRLI node and the vRLI VIP are in the same subnet.

Remember to always verify the forward and reverse DNS records for the VIP before deploying the vRLI cluster, as this can help you identify and resolve any issues related to DNS configuration. Additionally, if you encounter any issues during the deployment process, ensure that you have the correct network configuration in place to avoid any further complications.