Sammi Chen created HDDS-9015:
--------------------------------

             Summary: Block CSR request in SCM for 
"hdds.x509.rootca.certificate.polling.interval" time period 
                 Key: HDDS-9015
                 URL: https://issues.apache.org/jira/browse/HDDS-9015
             Project: Apache Ozone
          Issue Type: Sub-task
            Reporter: Sammi Chen
            Assignee: Sammi Chen


Once the root CA rotation and sub CA rotation finished, leader SCM will start 
to serve CSR request from other services, like existing OM, DN, Recon, or newly 
added OM, DN and SCM.  

But the problem is every service's certificate is signed without coordination, 
so that there will be some services whose certificates are already signed by 
new Root CA, and some services whose certificates are still old certificates 
and the cert renew not happened yet, then these services cannot talk to each 
other because some already got the new certificate and new root CA certificate, 
but some are not. 

Blocking the CSR for a "hdds.x509.rootca.certificate.polling.interval" period 
of time will guarantee that all services get the root CA certificate during 
this duration, so the above cannot talk to each case can be avoided. 



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