Atlas DBs and online network

A wiki page for the discussion on how to connect Atlas online (pit) to the DB services in IT

A few acronyms

• ATCN: ATLAS control network, the online network
  • ATCN is propagated via a fiber to the computer room
  • Switch D513-C-IPY-SHP3M-10 on RAC2 is used to associate DB servers to ATCN
• GPN: CERN general public network
  • This is the network used by all IT services including monitor and backup
• ONLINE: db nodes for atlas online RAC
• OFFLINE: db nodes for atlas offline RAC

Tentative Network Diagram

• ONLINE:
  • connected to ATCN
  • connected to OFFLINE (only) via private network (non-routed)
  • not connected to GPN

• OFFLINE:
  • connected to GPN
  • connected to ONLINE via private network (non-routed)
  • not connected to ATCN

• GATEWAY:
  • bastion host, used to access ATCN from GPN

PS: Cluster interconnects can be ignored for this purpose.

Open points

• How to access (and grant access) to(from) a series of services on GPN is needed for DB operations
  • Backup: Tivoli (access to TSM servers)
  • DBA custom monitoring
  • Oracle EM
  • Lemon and other 'sysadmin' monitoring
  • Quattor