add standard softIoc management script for "mona:" IOC

[prjemian]

For the MONA project, we need a few PVs so the MONA software pipeline can provide feedback to the running scan. Presently, this PV mona:StopAcquisition is important to advise the bluesky plan to stop (RE.stop()) the current scan. This PV is used as a bluesky suspender which means if the IOC is not running, the plan won't start. This error:

<class 'str'>: (<class 'TimeoutError'>, TimeoutError('Failed to connect 
to mona:StopAcquisition',))

The IOC is started using these commands:

cd ~/.ipython/profile_2bmb/startup/
screen
softIoc -d mona.db
^A d   (press Ctrl and A keys together, then d key to leave the screen session running in the background)

BCDA has a manage.sh shell script to manage a soft IOC such as this, providing simpler commands such as:

• ./manage.sh start
• ./manage.sh stop
• ./manage.sh restart
• ./manage.sh checkup (starts soft IOC if cannot find expected one running)
• ./manage.sh console (provides access to IOC's console)

This script can be placed in a cron file so that the IOC will start automatically after a reboot of the workstation.

Can set this up Monday.

[cpchuang]

It's a good idea to start soft IOC everytime the machien is rebooted. Perhaps a error handeling to remind the restart if this IOC is not responsive for any reason.

[prjemian]

Start off with moving existing parts into a new iocmona directory. Monitoring (for start or restart) is part of the standard manage.sh shell script. This is automated by adding as a cron task for periodic review (default is every 5 minutes). Could run as often as 1 minute intervals but that seems excessive. As a cron task, this will run (and start the IOC) within 5 minutes of a machine reboot.

[prjemian]

Here's an example of manage.sh (requires APS credentials to view).

[prjemian]

Another example of manage.sh from the synApps xxx open-source repository.

[prjemian]

.sh needs a checkup feature (re)added

[prjemian]

USAGE

user2bmb@lyra ~/.../startup/ioc2bmbmona $ /home/beams/USER2BMB/.ipython/profile_2bmb/startup/ioc2bmbmona/2bmbmona.sh usage
Usage: /home/beams/USER2BMB/.ipython/profile_2bmb/startup/ioc2bmbmona/2bmbmona.sh {start|stop|restart|status|checkup|console}

[prjemian]

periodic task : cron

runs on same workstation and account as IOC (user2bmb@lyra)

user2bmb@lyra ~/.../startup/ioc2bmbmona $ crontab -l
#=====================
# call periodically (every 5 minutes) to see if IOC is running
#=====================
#      field      allowed values
#      -----      --------------
#      minute     0-59
#      hour       0-23
#      day of month   1-31
#      month      1-12 (or names, see below)
#      day of week    0-7 (0 or 7 is Sun, or use names)

# check every five minutes if IOC is running in screen session
*/5 * * * * /home/beams/USER2BMB/.ipython/profile_2bmb/startup/ioc2bmbmona/2bmbmona.sh checkup 2>&1 > /dev/null