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Intermittent SSL errors (upstream certificate verify error) - 5 months ago

Hello, We have setup NGINX as a network proxy and performs 2-way TLS on either side, upstream and downstream. We noticed that randomly the container is giving 502s when connecting to upstream. The error logged is - "upstream SSL certificate verify error: (20:unable to get local issuer certificate) while SSL handshaking to upstream" Given that most of the times SSL handshake is corr