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"404 - Not Found" on xmc VM


Userlevel 1
I have read a number of KBs on this, but they don't seem to apply to us a we don't have the same paths.

This article: https://gtacknowledge.extremenetworks.com/articles/Solution/Unable-to-access-Extreme-Management-with... says to edit "/Install_path/NetSight/wildfly/standalone/configuration/emc.xml" except we don't have a "widlfy" subdirectory in our install. We are running 8.1.2.59 whch we downloaded as a .ova file and deployed from that
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Best answer by Bruno Quintanilha 26 November 2018, 16:25

Hi There,

i had the same issue. My VM had dynamic memory and the setup was made for 16GB.
I tried to increase the memory on my VM following the link provided above but got the 404 message.

I got it fixed by setting a fixed ammount of 16364MB of memory and the nsserver.cfg to

-Xms8g -Xmx8g -XX:HeapDumpPath=../../nsdump.hprof -XX:+HeapDumpOnOutOfMemoryError -XX:MetaspaceSize=128m

then restart the service.

Hope it helps

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Userlevel 4
Hi Stephen,

Can you confirm two things here

1) Extreme management center is not working and you are getting 404 error with similar server.log as mentioned in KB ?

2) This issue occurred once after upgrade ?

Thanks,
Suresh.B
Userlevel 1
We did not perform any upgrades; we deployed 8.1.2.59 directly from the ova file and we will randomly get the 404 error. the only way to resolve it is to restart the XMC VM.

All articles that I have read regarding 404 errors all mention editing files that do not exist in our installation.
Userlevel 3
Starting with XMC v8.0 we are using wildfly as the application server.
Please paste the content of this folder from your XMC: /usr/local/Extreme_Networks/NetSight
Userlevel 1
Ok, in "/usr/local/Extreme_Networks/NetSight/wildfly/standalone/configuration" I do have the emc.xml file, however it appears to already have a deployment-timeout section set so I guess that isn't the fix for the "404 - Not Found" error in my case.

Userlevel 3
How much RAM does your VM have and how much RAM did you assign to the wildfly server (check file: /usr/local/Extreme_Networks/NetSight/services/nsserver.cfg)?

Version 8 has new RAM requirements: https://gtacknowledge.extremenetworks.com/pkb_mobile#article/Solution/kA0340000000SZqCAM/s
Userlevel 1
We didn't make any changes to the settings after the .ova was deployed (thought everything was supposed to be configured as per recommendations via that method).

The VM has 32 GB of RAM.

The nsserver.cfg file shows the follwoing:
-Xms8g -Xmx8g -XX:HeapDumpPath=../../nsdump.hprof -XX:+HeapDumpOnOutOfMemoryError -XX:MetaspaceSize=128m

I will change that to match the suggestions on the page that you linked for a Medium system and see how things go.
Userlevel 1
Just had this happen again and the server is currently in a state showing the "404 - Not Found". What can I look at to see what may have caused it to go down again?
Userlevel 1
Just found out that XMC has been down since 5/26/18 until I rebooted the server today. Any other ideas into what we can look into as a path for resolution? It is definitely disconcerting to not have devices backups for those nights and we don't know what would happen if this server is actually brought live using NAC and the same thing happens again.
Userlevel 1
Apparently this was a known bug that was fixed with the release of 8.1.3.65.
Hi There,

i had the same issue. My VM had dynamic memory and the setup was made for 16GB.
I tried to increase the memory on my VM following the link provided above but got the 404 message.

I got it fixed by setting a fixed ammount of 16364MB of memory and the nsserver.cfg to

-Xms8g -Xmx8g -XX:HeapDumpPath=../../nsdump.hprof -XX:+HeapDumpOnOutOfMemoryError -XX:MetaspaceSize=128m

then restart the service.

Hope it helps

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