Loadbalancing 100% traffic routing and healthcheck

i’ve set up a DNS Loadbalancer with healthchecking to 2 Origin servers (S1 & S2), this works and I can manage traffic load to them. What I want to do though is route 100% of traffic to S1 until if fails at which point fail the traffic over to S2. Unfortunately this does not work as my traffic setting have to be S1=1 and S2=0. If will work if S1=0.99 and S2=0.01 but this is not the behaviour I want.

Is there a way to do this in Cloudflare?

Thanks

Yes. Create 2 pools, put S1 in pool 1 and S2 in pool 2. Use failover (the default LB type) and order the pools so the pool containing S1 is the first pool in the list.

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Thanks, that works perfectly. Had sticky sessions on which was a bit confusing at first but after switching those of it works!

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