Re: Archiver Appliance PVs never connect to be archived, always "Initial Sampling"

["Shankar, Murali via Tech-talk" <tech-talk at aps.anl.gov>]

>> so do we need to restart only the engine? 

For EPICS configuration, only the engine should be fine.

For the policy file, you don't need to restart anything. 

Hope that helps.

Regards,

Murali

---

From: Jeong Han Lee <citadel.lee at gmail.com>
Sent: Friday, October 30, 2020 2:29 PM
To: Shankar, Murali <mshankar at slac.stanford.edu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: Archiver Appliance PVs never connect to be archived, always "Initial Sampling"

 

On Fri, Oct 30, 2020 at 1:52 PM Shankar, Murali
<mshankar at slac.stanford.edu> wrote:
>
> Yeah; you have to restart the engine for changes to the EPICS environment to take effect.

Got it.  I have one more question on them, so do we need to restart
only the engine? or all four services?

> The policy is reloaded every so often and thus can be updated at run time.
Is this policy file? So, in terms of policy file, we don't need to
restart the engine. Is this correct?

Thank you, always.

Best,
Han



>
>
> ________________________________
> From: Jeong Han Lee <citadel.lee at gmail.com>
> Sent: Friday, October 30, 2020 1:32 PM
> To: Shankar, Murali <mshankar at slac.stanford.edu>
> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
> Subject: Re: Archiver Appliance PVs never connect to be archived, always "Initial Sampling"
>
> Hi Murali,
>
> I have one naive question about the following situation.
> After the archiver was started, in case that I have to change these variables.
>
> * Should I restart the service after changing these variables?
> * If so, is there any way to update them while the archiver is running?
>
> Best,
> Han
>
>
> On Fri, Oct 30, 2020 at 7:55 AM Shankar, Murali via Tech-talk
> <tech-talk at aps.anl.gov> wrote:
> >
> > The archiver needs a proper EPICS setup for it to connect to the IOC's. The engine's arch.log should print out the actual CA configuration being used so you can look there to see if the EPICS setup was inherited correctly from your .profile.
> >
> > Regards,
> > Murali
> >