IIS on Node App Pools are stopping HTTP Error 503

Question

User1415686117 posted

Windows 2012 R2

IIS 6.2 build 9200

Web Farm 2 Nodes

Both Nodes are VM's on VMware 6.5 ESXI hosts

The are balanced using Kemp Load Balancer.

I use DFSR to replicate the IIS  Web Content and the IIS Config

On Node 1 3 Application Pools stop

DefaultAppPool

Music

VeeamBackup

I get  Http error 503 service not available   when trying to access the site on NODE 1  NODE 2 is still working great.

The Music site is internet facing the VeeamBackup is internal only.

the three App Pools stop randomly or when trying to be accessed.

Since Node 2 is Good is there a way I can copied over from Node 2 to node 1

Or is there any thing I can do to get NODE 1 back online

This all happened after a NAS device crashed and I lost my SQL Servers had to rebuild them .

All databases are back online.

Any ideas would be helpful

Thank you

Tom

Answer 1

User-460007017 posted

Hi trgrassijr69,

You should be able to find error message in application and system event log. Could you reproduce this issue post these error messages?

I haven't used VMware but I am more familiar with Hyper-V. If VMware support VHDX, you could backup the whole server node 2 then install it on node 1 with  https://docs.microsoft.com/en-us/sysinternals/downloads/disk2vhd

Best Regards,

Jokies Ding

Answer 2

User1415686117 posted

Yuk

thank you for responding

Log Name:      Application
Source:        Microsoft-Windows-IIS-W3SVC-WP
Date:          10/7/2019 12:48:20
Event ID:      2280
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      TGCS013-N1.our.network.tgcsnet.com
Description:
The Module DLL C:\Windows\System32\inetsrv\iiswsock.dll failed to load.  The data is the error.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-IIS-W3SVC-WP" Guid="{670080D9-742A-4187-8D16-41143D1290BD}" EventSourceName="W3SVC-WP" />
    <EventID Qualifiers="49152">2280</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2019-10-07T16:48:20.000000000Z" />
    <EventRecordID>649016</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>Application</Channel>
    <Computer>TGCS013-N1.our.network.tgcsnet.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="ModuleDll">C:\Windows\System32\inetsrv\iiswsock.dll</Data>
    <Binary>7E000000</Binary>
  </EventData>
</Event>

this event over  and over again

Answer 3

User-460007017 posted

Hi trgrassijr69,

iiswsock.dll belong to IIS/world wide web service/WebSocket Protocol. Please go to C:\Windows\System32\inetsrv to compare the dll in server A and Server B. I think this file could probably has been corrupted. Try to copy this file from node 2 or reinstall it from server manager.

Use process monitor would help you pinpoint the problem

https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

Best Regards,

Jokies Ding