Troubleshoot Service Fabric Cluster Upgrade Issues

We refer Service Fabric Cluster Upgrade as the Fabric Upgrade. Fabric Upgrade failures can be caused by multiple reasons, some common issues were listed below: Missing seed node or not enough seed node number to match cluster reliability settings. Upgrade stuck for waiting for PreUpgradeSafetyCheck/SafetyCheck Upgrade timeout due to incorrect upgrade settings and health policy…

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.Net Framework proxy detecting/loading from a middle tier/service environment

I got pinged by several customers on .Net Framework proxy detection and how the proxy server been loaded or used in a .Net applicaton domain. The typical scenario is: cusotmer saw some inconsistent behavior for using Proxy or not using Proxy in a middle tier/service environement, such as a windows service using WCF calling another backend webservice,…

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SSL /TLS full handshake vs. abbreviated handshake

SSL negotiation starts with client hello and finished with CipherSpec Change. The handShake has 2 mechanisms: Full handshake vs. Abbreviated handshake (RFC 2246)     The difference is abbreviated handshake is using 32 bit existing SSL session ID for Client Hello. If SSL server agreed on this session, server doesn’t need to send the public…

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