Qlik Sense nodes are showing as offline in the Qlik Sense Management Console or are not responding.
Certificates are installed on the rim node and the Qlik services on the rim node are running.
Network or host system stability
Restart the Qlik Sense services to reestablish connectivity Networking:
Have the client verify with the networking team that the node is in the same subnet as the central node.
Reviewing the repository system trace log located at:C:\ProgramData\Qlik\Sense\Log\Repository\Trace\*System_Repository.LOG
shows:INFO qlikServerName System.Repository.Repository.Core.SystemInformation Exception encountered when fetching app migration hash, still trying. Failed attempts: 5 The remote name could not be resolved: 'qlikServerName.domain.com' at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)↵↓ at Qlik.Sense.Common.Communication.REST.Client.WebClientEx.GetWebResponse(WebRequest request, IAsyncResult result)↵↓ at System.Net.WebClient.DownloadBitsResponseCallback(IAsyncResult result) 8caa1faa-d256-4ee5-af88-0bec186abe6c
If this error can be observed, the name servers are unable to resolve the central node FQDN (name resolution is not happening).
Is the system a virtual environment running VMWare with VMware Tools 10.2.0
A defect in the VMWare Tools version 10.2.0 leads to port exhaustion and network connections being terminated.
Please review the VMWare's knowledge base
- Qlik Sense Enterprise Server - all versions
DNS issues in the network hosting the Qlik software.
This issue is very specific in that the reason for failure is outside of the Qlik Product. A solution needs to be found within the network hosting the Qlik product.
Solution applicable to the DNS issue are:
- Adjust and resolve name lookup issues by configuring the DNS correct.
- Modify the hosts file on machines affected by the issue. Add the IP and FQDN of each node in the environment.
- NOTE: hosts file can be located at ... C:\Windows\System32\drivers\etc