bneradt opened a new issue, #9819:
URL: https://github.com/apache/trafficserver/issues/9819

   @maskit converted the mechanism for OCSP fetch from the openssl's 
implementation to using FetchSM via #9591. This is a necessary and valuable 
change to give us flexibility with our SSL library options. However when 
testing ATS 10 internally at Yahoo, I noticed the following OCSP ERROR messages 
on process start:
   
   ```
   [Jun  9 19:12:30.086] [ET_OCSP 0] ERROR: Failed to refresh OCSP for <path> 
certificate. url=http://ocsp.digicert.com
   [Jun  9 19:12:30.087] [ET_OCSP 0] ERROR: failed to get a response from OCSP 
server; uri=http://ocsp.digicert.com
   [Jun  9 19:12:30.087] [ET_OCSP 0] ERROR: stapling_refresh_response: failed 
to refresh OCSP response
   ```
   
   These error messages are alarming. Talking with @maskit, however, he points 
out that these failures are due to FetchSM not being initialized in the early 
process startup phase that's trying to use it. Later on, after the ATS process 
is finished, the fetch works fine. So OCSP works fine, just not during process 
start.
   
   We should consider whether we can silence these messages on process 
initialization or, potentially, perform the fetch later when FetchSM is fully 
initialized.


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