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From André Warnier (tomcat) ...@ice-sa.com>
Subject Re: TOMCAT 8.5.15 - on windows 7 server - Password for Service Username disappears
Date Thu, 06 Jul 2017 16:04:28 GMT
Hi.
On this list, it is preferred/recommended/strongly recommended to respond *below* the 
original message, and not to "top post".
It just makes it easier to follow the normal flow of a conversation.
See the rules : http://tomcat.apache.org/lists.html#tomcat-users  #6
 >
> -----Original Message-----
> From: André Warnier (tomcat) [mailto:aw@ice-sa.com]
> Sent: Thursday, July 06, 2017 11:35 AM
> To: users@tomcat.apache.org
> Subject: Re: TOMCAT 8.5.15 - on windows 7 server - Password for Service Username disappears
>
> On 06.07.2017 17:13, Fau Buitron wrote:
>> Hi All,
>>
>>       I am running TOMCAT 8.5.15 on a Windows 7 server with SP1. Although it is not
consistent, the password value for the specific username used to run the TOMCAT service disappears
when the service is stop and started again. The starting of the service fails because the
value of the password disappears.
>>
>>       Once the password value is re-entered with the password value, the TOMCAT service
starts without any issues, has anyone encountered this issue?
>>
>>        I look forward to your response.
>>
>>
>
> Hi.
> I have never seen the behaviour which you describe above, although I regularly run Tomcat
as a Service on Windows systems, in multiple customer networks.
> First, maybe something which you should read :
> https://wiki.apache.org/tomcat/FAQ/Windows#Q11
>
> In a way, this explains why the Tomcat code itself is very unlikely to contain anything
which would modify this Windows user's password. (If anything, it would be the "wrapper"
> program described in that article.)
>
> My guess would be at this point : if the user-id in question is a Windows Domain user-id,
then mybe some Windows network policy is the cause of this password reset.
> Ask your Windows network sysadmins.
>
> Hope this helps.
>
On 06.07.2017 17:48, Fau Buitron wrote:
> Hi Andre,
>
>   Thank you for your response and feedback. I had reached out to our windows support
group only to be told that it must be caused by the third party product.
> What's worse is that all installations of TOMCAT (Stage and Production) encounter the
same behavior when the service itself it stopped.
>
>   I was reaching out to the TOMCAT user community in the event that there might be a
permission that needs to be granted to a file in which the service account
> Username and password might need to be entered.
>
>   So I am once again at square one, however, I will follow your suggestion and reach
out to the networking group to see if they can shed light on this situation.
>
> Thank you.
>
> Fau
>

Another suggestion : if you have read the article to which I pointed you, you will see 
that the "wrapper" program which actually runs the JVM which runs Tomcat, actually stores

its parameters in the Windows Registry.
It is the same for the userid/password which you enter in the service description.
So maybe it is not an issue linked to Tomcat per se, but instead due to the fact that by 
entering this password, you are modifying the Registry.
And perhaps there is some network script which regularly removes such changes, when made 
by a user who does not have the correct permissions to do so ?
It may thus be that it is not the Tomcat start/stop per se which resets this password, but

that this happens asynchronously, and that you just notice it when you are trying to 
restart Tomcat.

You could try the following experiment :
- set the password for that user, start Tomcat as usual, and leave it running
- then, after a suitable pause, try to login to that same workstation, as this Tomcat 
user, using the same password which you set.
If it does not work, then you know that it has nothing to do with stopping Tomcat.


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