There are two significant type of maintenance issues when we talk about TULIP. The problems we need to address are location change of landmarks and their uptime. The problem with the landmarks being available is discussed in landmarks laundering which is child to TULIP analysis page. The other significant problem is the location update of landmarks. We are getting the location of Planet Lab landmarks using the geoiptool, PingER landmark locations are provided by the site hosts are are manually added to Node Detail database. We intend to run a nightly cron job to check if there is any host which has changed its position. The script is currently deployed at
/afs/slac/package/pinger/tulip/maintainPL.pl