Forum Discussion

fxn-f5-bot_3543's avatar
fxn-f5-bot_3543
Icon for Nimbostratus rankNimbostratus
Feb 28, 2018

Delayed Fail over to a secondary server

Hi All,   I have a unique requirement where the client would like to have a delayed fail over between 2 nodes in a pool. There will be a database application behind an LTM with a pool containing 2...
  • Hannes_Rapp_162's avatar
    Feb 28, 2018

    Seems like all you need is a ratio configuration to make sure your primary DB node gets all connections as long as its available, and a health-check monitor. Maybe even tcp-half-open healt-check monitor will do. As long as the Standby Database Node keeps its TCP listener closed while it's sub-services are unavailable, you will not need any complex alchemy. That's how most database systems operate - if service is down, TCP listener is closed. BigIP can identify this and not send any traffic there. What DB system are you using?

     

    https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-monitors-reference-11-2-0/1.html