frontend Public-HTTP
    mode http
    bind *:80
    acl swift_path path_beg /v1 /v1.0
    use_backend swift if swift_path
    default_backend cloudstack

backend swift
    mode http
    server swift_proxy_1 10.100.1.100
    server swift_proxy_2 10.100.1.101
    option httpchk
    reqirep ^POST\s+(.*)$ PUT\ \1

backend cloudstack
    mode http
    server cloudstack 10.100.1.50:8080