RH318
Hi all
Going through the first guided exercise in chapter 3 of the RH318 course, my RHEV-H node is in a 'non-operational state'. The text says:
'If the RHEV-H host enters a Non-Operational state, reboot the RHEV-H host and check its BIOS settings. Make sure that “Execute Disable Memory Protection Technology” is enabled.'
How do I do this?
Thanks
Responses
Hi Colin,
I assume you are using the virtual labs provided, not sure why i would be prompting you to change things in the BIOS. Those instructions might be to allow for those who are using their own bare-metal systems.
Can you see the specific error messages in the event log, or on rhev-m? (/var/log/ovirt-engine/engine.log). There's a number of reasons why a new host might go non-operational, so could be something else.
Hi Colin, what 'CPU type' did you select for your cluster? Try selecting the most basic AMD one first (Opteron G1)
You can check the flags (provided by /proc/cpuinfo) required for each 'CPU type' in the solution here: https://access.redhat.com/solutions/634853 (bottom of the page)
Hi Colin, can you show the output of the following DB query: On rhev-m run (assuming this is 3.5)
su - postgres
psql engine
engine=# select * from vdc_options where option_name = 'ServerCPUList' and version = '3.5';
I've heard of an issue where, if the CPU information in the DB is not correct, the gui simply refuses to display anything at all. Info from my working environment: (one line)
3:Intel Conroe Family:vmx,nx,model_Conroe:Conroe:x86_64; 4:Intel Penryn Family:vmx,nx,model_Penryn:Penryn:x86_64; 5:Intel Nehalem Family:vmx,nx,model_Nehalem:Nehalem:x86_64; 6:Intel Westmere Family:aes,vmx,nx,model_Westmere:Westmere:x86_64; 7:Intel SandyBridge Family:vmx,nx,model_SandyBridge:SandyBridge:x86_64; 8:Intel Haswell Family:vmx,nx,model_Haswell:Haswell:x86_64; 2:AMD Opteron G1:svm,nx,model_Opteron_G1:Opteron_G1:x86_64; 3:AMD Opteron G2:svm,nx,model_Opteron_G2:Opteron_G2:x86_64; 4:AMD Opteron G3:svm,nx,model_Opteron_G3:Opteron_G3:x86_64; 5:AMD Opteron G4:svm,nx,model_Opteron_G4:Opteron_G4:x86_64; 6:AMD Opteron G5:svm,nx,model_Opteron_G5:Opteron_G5:x86_64; 3:IBM POWER 8:powernv,model_power8:power8:ppc64;
Since this is a test environment that can easily be reset, you can try updating with this string, restart ovirt-engine, and see if it helps. Either way, it seems like a bug with the environment rather than something you are doing wrong (screenshot of the gui and the above db query will help)
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