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What should / can I do when experiencing problems with my failover system?

Solved1.00K views22nd February 2023Failover
9
Mieke Dryepondt [SLC] [DevOps Advocate]3.60K 22nd February 2023 0 Comments

I mainly want to know what I can do & provide Skyline to assist / help investigate problems, unexpected behaviors in a failover setup.

Mieke Dryepondt [SLC] [DevOps Advocate] Selected answer as best 22nd February 2023

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Marlies Vandenberghe [SLC] [DevOps Member]2.98K Posted 22nd February 2023 0 Comments

The following  files contain information related to the failover status:

-SLFailover.txt: this log file will show you what a current DMA believes it should do related to failover, come online, take the VIP, etc

-FailoverStatus.txt: this will only contain the current status of the failover, this can be 3 options: Offline, Online or Not active

not really that useful since the same information is available in SLFailover.txt but might be used in cases to read out the state in an easy straight forward way (but we might change/remove this log file in the future)

-SLNet.txt: likely the most useful log file when issues occur, this contains the SLNet checks to know the status of the other agent, search for words as “Failover”, “DRS” (old naming convention for DataMiner Redundancy System) or IP of the other agent

-DMS.xml: there isn’t any other configuration file involved except this one, double confirm if the settings are OK

Important note: never remove a failover for debugging purposes or to try to fix something, very likely this will break things even further or make things corrupt. At that point provide the SLLogCollector packages from both nodes to our techsupport team to have a proper action plan in place to resolve the situation

Mieke Dryepondt [SLC] [DevOps Advocate] Selected answer as best 22nd February 2023
9
Arunkrishna Shreeder [SLC] [DevOps Advocate]4.02K Posted 22nd February 2023 0 Comments

I would check the failover status window from System Center –> Agents –> Failover and then continue the investigation. Usually, the log file SLFailover.txt (in C:\Skyline DataMiner folder) contains all the info related to failovers such as when a failover occurred etc. There is another file called FailoverStatus.txt in the same folder that shows the current state of the DMA in failover (whether it is going online/offline etc).

Arunkrishna Shreeder [SLC] [DevOps Advocate] Answered question 22nd February 2023
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