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| ranjan1247 |
 Posted: Thu Jan 08, 2015 10:30 am Post subject: What will happen if i change the MCAUSER? |
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Novice
Joined: 17 Feb 2014
Posts: 20
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I am very confuse about MCAUSER
suppose channel MCAUSER(mqm), If i change to nobody or some other user how it will affect to business? |
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| bruce2359 |
| Posted: Thu Jan 08, 2015 10:36 am Post subject: Re: What will happen if i change the MCAUSER? |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| ranjan1247 wrote: |
I am very confuse about MCAUSER
suppose channel MCAUSER(mqm), If i change to nobody or some other user how it will affect to business? |
MCAUSER( ) channel attribute sets the identify of the process/thread of that channel. The identity specified will be used to determine if the message channel agent has authority to open the queues and get/put messages.
Changing the attribute to 'nobody' or some other user with no authorities to open queues or get/put message will have a negative impact on the business.
Do some research on google or here on MCAUSER and CHLAUTH.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| mqjeff |
| Posted: Thu Jan 08, 2015 10:41 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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Nothing will happen.
Until someone tries to use the channel. |
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| Vitor |
| Posted: Thu Jan 08, 2015 11:39 am Post subject: Re: What will happen if i change the MCAUSER? |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| ranjan1247 wrote: |
| how it will affect to business? |
Users who've been abusing this channel to remotely adminsiter your queue manager without your knowledge will no longer be able to do so.
Users who've been using the queues on the queue manager legitimately but have not bothered to set up the security they need will no longer be able to do so.
If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so.
If you set it to some other user, users who want to do something that this other user is not allowed to do will no longer be able to do so.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| mqjeff |
| Posted: Thu Jan 08, 2015 11:42 am Post subject: Re: What will happen if i change the MCAUSER? |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| Vitor wrote: |
| If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so. |
not true with chlauth |
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| bruce2359 |
| Posted: Thu Jan 08, 2015 11:49 am Post subject: Re: What will happen if i change the MCAUSER? |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| mqjeff wrote: |
| Vitor wrote: |
| If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so. |
not true with chlauth |
The 'nobody' special value is not known to all o/s platforms.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| mqjeff |
| Posted: Thu Jan 08, 2015 11:52 am Post subject: Re: What will happen if i change the MCAUSER? |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| bruce2359 wrote: |
| mqjeff wrote: |
| Vitor wrote: |
| If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so. |
not true with chlauth |
The 'nobody' special value is not known to all o/s platforms. |
the mcauser on the channel is not necessarily used when chlauth rules are in place. |
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| PeterPotkay |
| Posted: Thu Jan 08, 2015 12:27 pm Post subject: Re: What will happen if i change the MCAUSER? |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| mqjeff wrote: |
| bruce2359 wrote: |
| mqjeff wrote: |
| Vitor wrote: |
| If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so. |
not true with chlauth |
The 'nobody' special value is not known to all o/s platforms. |
the mcauser on the channel is not necessarily used when chlauth rules are in place. |
Or if a Security Exit is in use and configured to override the MCAUSER.
So, changing the MCAUSER can have a huge impact. Or zero impact.
_________________
Peter Potkay
Keep Calm and MQ On |
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| bruce2359 |
| Posted: Thu Jan 08, 2015 12:50 pm Post subject: Re: What will happen if i change the MCAUSER? |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| PeterPotkay wrote: |
| mqjeff wrote: |
| bruce2359 wrote: |
| mqjeff wrote: |
| Vitor wrote: |
| If you set it to nobody, then even legitimate users who've been using the queues on the queue manager with security set up will no longer be able to do so. |
not true with chlauth |
The 'nobody' special value is not known to all o/s platforms. |
the mcauser on the channel is not necessarily used when chlauth rules are in place. |
Or if a Security Exit is in use and configured to override the MCAUSER.
So, changing the MCAUSER can have a huge impact. Or zero impact. |
So, in summary, it depends.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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