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VR12's avatar
VR12
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Nov 02, 2022

F5 - nPath configuration - display maintenance page

HI  our application vendor recommend we implement nPath  (direct server return)   -   which we did with the help of F5 support  ... it took several engineers but we were able to implement nPath  and ...
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VR12's avatar
VR12
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Dec 07, 2022

Thanks Paulius -  we just  want to display a  under  maintenance page   - at this time we do not care about having it automatically displayed when the  POOL is down  .....  we will enable it manually. 

So  to explain we have iRule set for nPath  to work ....  as per the articles  they mention a  standard setup   to auto display maint page when  pool is down ...... and following the article it can not be configured because rule is configured different for nPath. 

Servers will be down for maint  so POOL  will be down ... so  we are looking for a way to have the maint page enabled at that time. 

Would it be possible to have 2 profiles for the same VIP   ---  and enable  as needed  .. prod or maint. 

Sorry  our F5  is managed by a different group.. and looking for suggestions so we can ask them try  ..as we have been  been told its not possible in nPAth config  ... BUT again  if pool is down  we are not using nPath. 

Many  Thanks for any suggestions.... 

 

buulam's avatar
buulam
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Dec 16, 2022

You won't be able to have 2 VIPs with the exact same IP/port combo but since you're doing this manually, you could always have a bogus port specified for the maintenance page VIP and your manual process is simply adjusting the port.

  • VR12's avatar
    VR12
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    Dec 19, 2022

    Thank you Buulam    -  there is a part I don't understand -    So 

    We have  DNS entry  to sample.com  vip  (config uses nPath) set   to , lets say just to discuss, to  10.0.0.15  with pool of 2 servers that will be down for maintenance.  

    So we would create a  New VIP   with  10.0.0.20   and  ???  

    how would  we point sample.com  to  new VIP or maint page from new VIP  to respond  to requests to 10.0.0.15  sample.com   ( don't care to much for doing DNS changes since have to deal with  caching - tried that already.) 

     

    Many Thanks ... 

     

    VR12  

     

    • buulam's avatar
      buulam
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      Dec 19, 2022

      During the time when the pools are down, you'd change the 10.0.0.15 to something else and then change 10.0.0.20 in its place

      The new VIP does not need to have a pool attached if you are using a maintenance iRule. It will not show Green "Up" status but it will work.

      • VR12's avatar
        VR12
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        Dec 22, 2022

        Thanks buulam  - we will try that  -  and also will actually help  us , because being that the primary VIP will display the maintenance page  - we can use the temp vip to access the systems  and test before releasing back to users .  

        Thanks again  will let you know ...

        RV VR12