Process Management

NOTE: make sure clascron account exist on all machines participating in cron job-based monitoring, and it is in onliners group. If not, modify /etc/passwd, /etc/shadow and /etc/group files using examples from existing machines. Scripts started by cron jobs will use ssh -n node ... statements so clascron must be able to ssh. It must be done without password, so login to every machine running related cron jobs (clon10, clon00, clon01) as clascron and make sure you can ssh to all other machines without password. If necessary, fix ~/.ssh/known_hosts.

Generic information

Directory $CLON_PARMS/processes contains 6 configuration files for CLON process management system:

ipc_process_manager.cfg      <- ipc_process_manager(perl script) <- control_ipc_process_manager (csh script)
ipc_critical_processes.cfg   <- ipc_process_monitor(perl script) <- cronjobs

To start/stop 'ipc_process_manager':

control_ipc_process_manager start clasrun
control_ipc_process_manager stop clasrun

Currently used components:

epics_monitor
ipcbank2et
clas_epics_server
dbrouter
alarm_handler
alarm_server
alarm_browser

CLAS-era stuff:

critical_processes.cfg
process_manager.cfg
remote_critical_processes.cfg
sys10_critical_processes.cfg

To watch ipc messages:

java clonjava/ipc_monitor -a clasrun