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| location / {
# Send 404s to B
error_page 404 = @backendB;
proxy_intercept_errors on;
log_not_found off;
# Try the proxy like normal
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://A;
}
location @backendB {
# If A didn't work, let's try B.
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://B;
# Any 404s here are handled normally.
} |
