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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2021/05/13 09:59:39 UTC
[GitHub] [ozone] bharatviswa504 commented on a change in pull request #2205: HDDS-5158. Add documentation for SCM HA Security.
bharatviswa504 commented on a change in pull request #2205:
URL: https://github.com/apache/ozone/pull/2205#discussion_r631700247
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File path: hadoop-hdds/docs/content/feature/SCM-HA.md
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@@ -111,6 +107,62 @@ This can be changed with using `ozone.scm.primordial.node.id`. You can define th
Based on the `ozone.scm.primordial.node.id`, the init process will be ignored on the second/third nodes and bootstrap process will be ignored on all nodes except the primordial one.
+## SCM HA Security
+
+
+
+In a secure SCM HA cluster on the SCM where we perform init, we call this SCM as a primordial SCM.
+Primordial SCM starts root-CA with self signed certificates and is used to issue a signed certificate
+to itself and other bootstrapped SCM’s. Only primordial SCM can issue signed certificates for other SCM’s.
+So, primordial SCM has a special role in the SCM HA cluster, as it is the only one that can issue certificates to SCM’s.
+
+In addition to root-CA primordial SCM also has a sub-CA which has a signed certificate from root CA which is used to sign certificates for OM/Datanodes.
+
+When bootstrapping a SCM, it gets a signed certificate from the primary SCM and starts sub-CA.
+
+Sub-CA on the SCM’s are used to issue signed certificates for OM/DN in the cluster. Only the leader SCM issues a certificate to OM/DN.
+
+### How to enable security:
+
+```XML
+<property>
+<config>ozone.security.enable</config>
+<value>true</value>
+</property>
+
+<property>
+<config>hdds.grpc.tls.enabled</config>
+<value>true</value>
+</property>
+```
+
+Above configs are needed in addition to normal SCM HA configuration.
Review comment:
Done
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