Lecture 5. VMware ESXi 8.x Host Fails with PSOD or Kernel Panic: Troubleshooting Tutorials

[@oscarsalas1]

really good info right here, many thanks buddy!

[@govmlab]

Thank you for appreciating our hard work and efforts. Glad to know that you enjoyed our lectures and find it useful for learning. Keep Sharing and Enjoy Learning VMware with GoVMlab.

[@kavithagangaraju8069]

Please make more vedios related to vmware its very helpfull us and good expliantion .Thankyou much

[@govmlab]

Thanks for your kind feedback. We will create more videos on it. Keep Sharing and Enjoy Learning VMware with GOVMLAB!!

[@SinghBalraj102]

It was very well explained, and we wish you would create more videos in the future. This will create an opportunity to brush up on our knowledge.

[@govmlab]

we will do it surely!!

[@sivasworld7420]

Awesome! Explanation

[@govmlab]

Glad you liked it!! Keep Sharing and Enjoy Learning VMware with govmlab.

[@arknasa]

Good content. Thank you!

[@govmlab]

Thanks for your kind feedback. We are glad that you liked our content. Keep Sharing and Enjoy Learning VMware with GOVMLAB.

[@jeetenamberkar9081]

Very very very helpful 👌👌

[@govmlab]

Thanks Jeeten Glad to hear that you find our lectures useful....Keep Learning and Keep Sharing!!

[@rejeevesundar3982]

Question: esxcli system coredump (file list) and (esxcli.....file get) are the same ryt. what is the get command actually doing? where its already been said that the file is active and configured. both active and configured refer to the same file, whereas you say they are different. Isn't the get command restoring the current dump file configuration and also ensuring that the file is active and configured? Please clarify

[@govmlab]

Hi Rejeeve, Yes, both the commands are identical but there is slight difference between these two commands if you observe them closely. ESXCLI ....file get command will print the path to the active and/or configured VMFS Dump File. ESXCLI .....file list command list the active/configured VMFS diagnostic files. Since our case, both Active and Configured files are same so we don't see much difference. But in some environment, where active and configured files are different then we might find get commands more useful to identify the exact path of both active and configured coredump file. ESXCLI ......file list command will help us to identify currently Active Coredump file out of multiple coredump files configured on system. In Short, as long as you have configured only 1 file as coredump file then there is not much difference in both CLIs output.

[@govmlab]

One more difference, what if you want to identify the size of coredump file.

[@rejeevesundar3982]

@@govmlab got it. Thanks👌

[@PS-ji7yp]

After upgrading esxi host, but loading older version of esxi host, what will be the reason?

[@govmlab]

Please make sure your ESXi booting with the right disk having upgraded image. It might happen that you installed upgraded version to some other disk and booting ESXi from different disks. Please check your ESXi bootloader disk details.

[@rameshnambi]

Super explanation brother.

[@govmlab]

Thank you so much 🙂 Keep Sharing and Enjoy Learning VMware with GOVMLAB!!

[@travelwith6798]

My question : What if the ESX does not go out of PSOD. we cannot get into the DCUI. so can we still get the dump logs ?

[@govmlab]

Hi If you hosts continuously get into PSOD state then yes, you won't be able to login to Host to extract coredump. In such scenario, you will have to collect Serial Logs which would be capturing all the required information about this PSOD. In production, all the servers should have serial port connectivity to collect Traces when hosts continuously gets into PSOD state. I hope it clarifies your doubt!!

[@travelwith6798]

@@govmlab did you mean having a remote server for log dumping ? Didn't find any information on serial port connectivity. Can you elaborate further so I will search articles on the same

[@kathiravanm7990]

HI Sir , I need a HCX and SRM real time scenario basis video's required .is this available.

[@govmlab]

Hi We don't have HCX and SRM lectures available as of now. We will try to share the knowledge on these topics soon. Keep Sharing and Enjoy Learning VMware with GOVMLAB!!

[@decentmosy]

Please make some videos regarding troubleshooting disk consolidation issue, lock file & storage issues

[@hafizurahman79]

Thanks for the video sir ! Really helpful and please upload network issue Tsr steps and some of videos are can't able to play . Showing video not available please check on it

[@govmlab]

Hi Hafizu Those videos will be unlocked as part of our KZbin Membership Program. Please subscribe to our channel and stay tuned to get more updates on accessing our member specific content.

[@decentmosy]

How to join your channel's membership.. Since your videos are very helpful..

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Hi DecentMosy, Please click on the link below to join our membership program and get access to Members-only content published on our KZbin Channel. kzbin.infojoin

[@rejeevesundar3982]

It is clear that that the log file is created\extracted from the zdump file, but, is the zdump file extracted\created from coredump file? or is it related to the coredump file in any way?

[@govmlab]

@Rejeeve, Coredump file contains memory state, buffers, registers state of system at the time of crash. Zdump file is used by Development team to get more details about the stacktrace and finding out the root cause of this crash. we extracted only vmkernel.log file from zdump to understand the crash and analyzing it. I hope it clarifies your doubt!!

[@rejeevesundar3982]

@@govmlab understood the difference between coredump and zdump. But why are we using esxcli......list command ? wheres we are able to get the log file by simply using esxcfg....devname active. command alone

[@govmlab]

@@rejeevesundar3982 Hi Rejeeve esxcfg is old CLI interface whereas esxcli is new CLI Interface. All new enhancements is being added to esxcli. for ex. esxcfg-nics and esxcli network nic list. both command shows the same output. but esxcli has better readability and new arguments as compared to esxcfg-* Anyway, it's upto you. you can choose whatever CLI you are comfortable with.

[@rejeevesundar3982]

@@govmlab That's good to know. I never knew the difference. Thanks

[@syedsfamily]

When I run esxcfg-dumppart command. I'm getting ------- Unable to copy the dump file: WARNING: Start offset less than header size! .

[@govmlab]

Hi Syed Please try configuring VMkernel Dump file by following kb.vmware.com/s/article/2077516 and tried to generate the log file by following kb.vmware.com/s/article/2081902 This should solve your issue.

[@rejeevesundar3982]

your lectures are much helpful. But i find the lectures aren't organized in a sequence and file names are lengthier. Had it been stating only what is in that file, instead of a whole bunch on file names it would be more convenient for users to view the file. Just a small input

[@govmlab]

@Rejeeve Yes, Troubleshooting lectures are not in sequence. I totally agree with you on this and there is reason behind this. You can check out our vSphere Administration training where all the lectures are in sequence. Files names are longer because that's how SEO works. we put tremendous efforts in creating these videos and if google doesn't search out these videos then our entire efforts go waste. Hence we need to provide title which are SEO friendly not learner's friendly. I hope you understand our point and concern as well.

[@rejeevesundar3982]

@@govmlab Thanks. I understand your concern. As a user i felt that, your videos could have more views as compared to a whole lot of junk out there. You could add key words on to the KEY Word section for SEO rather than on the title. Because many a time when the title isn't crisp enough, i personally don't click in to watch. Even after seeing a lot of you videos its still hard to find the videos which i am looking for. And the search is also not suggesting the videos as it should.

[@anishsalpy]

👏

[@govmlab]

Thanks Anish!!

[@jupiterpalan5652]

Not upto the mark, improve your communication and method of teaching

[@govmlab]

Thanks for your valuable feedback. We will definitely work on our communication skills.

[@vkumvcp]

who are you...oxford professor... ??? and what is not up to the mark ...? send your sample video of how you are going emulate this....let us judge... watching and absorbing all content for free and judging as if he is giving ratings to movies... disgusting people

[@anotherpremkumar]

@Jupiter Palan stfu Doctorate holder from Oxford for English literature.. if you are here you learn stfu and learn.. if you want to start English classes you ducking start your classes and don't come here.. -ve ducker

[@anotherpremkumar]

@govmlab the videos are good