Renewing Let’s Encrypt root certificates for legacy CentOS, handling an error in DNS records with Ingress, restoring a PgSQL table from a backup, dealing with a tricky sharding problem in Elasticsearch, and more.
Tutorial to create self-signed certificates and regular SSL certs validated by HTTP and DNS methods of Let's Encrypt ACME server for your Kubernetes clusters.
Detailed description of Ingress controllers / API Gateways for Kubernetes with a matrix comparing them by 15 parameters.
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