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Dalmaren_261881's avatar
Dalmaren_261881
Icon for Nimbostratus rankNimbostratus
May 15, 2016

Virtual server and http pool not accessible

Dear All,

 

I am new to F5 and just starting learning this technology. I purchased a training suite and practicing on F5 BIG-IP LTM v11.3 VE. On a VMware workstation, I installed 3 small linux machines as webservers (SliTaz). I also installed Ubuntu desktop which I converted to a router. My BIG-IP LTM has 3 interfaces, internal to the webservers, external to public access, and a management network. The Ubuntu desktop routes everything and I can successfully reach each and every interface, including the servers. I can also browse (http) to these webservers.

 

The problem:

 

At the beginning, I could not get the pool members up. From a post by Doodle_guy (Offline (Enabled) - The children pool member(s) are down), where he tweaked the http monitor, I managed to bring the pool up. now when I created the virtual server, I can see both the pool and its members all up. but when I try to access the virtual server from the external network, the access is failing. For the pool monitoring I am using a new http monitor (GET /\r\n\r\n) The reason I used that is the normal http did not work for me (GET /\r\n)

 

Any suggestions please. I am stuck at the moment and cannot proceed to follow the training.

 

Thank you,

 

  • Hello,

     

    Did you add a snat configuration ? If not, try by adding the automap value to the snat setting on the Virtual Server

     

  • Hello,

     

    Did you add a snat configuration ? If not, try by adding the automap value to the snat setting on the Virtual Server

     

    • Dalmaren_261881's avatar
      Dalmaren_261881
      Icon for Nimbostratus rankNimbostratus
      Hi Yann, Thanks for your quick response. I am not sure where to activate that. I can see address translation and port translation are active in the virtual server. But I am still following the training and not to the SNAT part yet. Just by looking at the SNAT part now, I do not have any SNAT pool. Do I need a pool to be created. The external interface of the BIG-IP is on the same vmnet with the PC which is representing the public users. Could you please elaborate how I can activate the SNAT. Thank you,
    • Yann_Desmarest_'s avatar
      Yann_Desmarest_
      Icon for Nacreous rankNacreous
      Hi, You just need to go to your Virtual Server configuration and select the "automap" value in the "Source Address Translation" setting. That's it for snat.
  • Hello,

     

    Did you add a snat configuration ? If not, try by adding the automap value to the snat setting on the Virtual Server

     

    • Dalmaren_261881's avatar
      Dalmaren_261881
      Icon for Nimbostratus rankNimbostratus
      Hi Yann, Thanks for your quick response. I am not sure where to activate that. I can see address translation and port translation are active in the virtual server. But I am still following the training and not to the SNAT part yet. Just by looking at the SNAT part now, I do not have any SNAT pool. Do I need a pool to be created. The external interface of the BIG-IP is on the same vmnet with the PC which is representing the public users. Could you please elaborate how I can activate the SNAT. Thank you,
    • Yann_Desmarest's avatar
      Yann_Desmarest
      Icon for Cirrus rankCirrus
      Hi, You just need to go to your Virtual Server configuration and select the "automap" value in the "Source Address Translation" setting. That's it for snat.
  • Just to add, my virtual server config is as below: [root@BIGIP-LTM-1:Active:Standalone] config tmsh list ltm virtual Our-vServer-Web ltm virtual Our-vServer-Web { destination 192.168.1.177:http ip-protocol tcp mask 255.255.255.255 pool Our-HTTP-Pool profiles { tcp { } } source 0.0.0.0/0 vlans-disabled }