F5 Config - API Access on servers

Hi DavD​ ,

There are a few ways to go about this,  you can use an iRule or LTM Policies - both can achieve the same outcome.  I recommend you check these out: LTM Policy - Getting Started  & LTM Policy Basics   Also consider applying a health check to your backend pool members and whether you need Server side encryption (Server SSL profile)  

You can use these tmsh commands as reference for to create and apply a LTM policy, they need to be modified to reflect the actual names

# =====================================================
# 1. Update Virtual Server with required profiles, one connect may be applied if needed
# =====================================================
tmsh modify ltm virtual vs-app-api profiles replace-all-with {
    http
    clientssl-app.mydomain.com
    serverssl
  }

# =====================================================
# 2. Create LTM Policy with URI rewrite rule
# =====================================================
tmsh create ltm policy policy-rewrite-checkinventory \
    strategy first-match \
    rules {
        rewrite-checkinventory {
            conditions {
                0 {
                    http-uri path starts-with /CheckInventory
                }
            }
            actions {
                0 {
                    rewrite uri value /ne/curr/CheckInventory
                }
                # Optional: rewrite Host header
                # 1 { replace http-header Host value prod.mydomain.com }
            }
        }
    }

# =====================================================
# 3. Attach the policy to the Virtual Server
# =====================================================
tmsh modify ltm virtual vs-app-api policies add { policy-rewrite-checkinventory }

# =====================================================
# 4. (Recommended) Add HTTPS health monitor to pool
# =====================================================
tmsh modify ltm pool pool-prod-api monitor https

# =====================================================
# 5. Save the configuration
# =====================================================
tmsh save sys config