This free training series teaches PKI for DevOps engineers. It covers TLS certificates, certificate chains, OpenSSL troubleshooting, Java keystores, PKCS12 files, certificate automation, and PKI architecture.
Many DevOps engineers encounter TLS problems when deploying web services, APIs, Kubernetes clusters, or internal microservices. Understanding Public Key Infrastructure (PKI) helps diagnose these issues and design secure systems.
This training series walks through the core concepts and practical tools used to manage TLS certificates in production environments.
PKI for DevOps Engineers – Free Training Series
This free PKI training series is designed to help DevOps engineers understand how TLS certificates work in real-world systems. The lessons build from foundational concepts into practical troubleshooting, automation, and architecture topics.
- How TLS and PKI Work
- Understanding X.509 Certificates
- Certificate Chains Explained
- Debug TLS with OpenSSL s_client
- Verify Certificate Chains with OpenSSL
- Creating CSRs with OpenSSL
- Working with PKCS12 Certificates
- Java Keystores and keytool
- Certificate Expiration Monitoring
- Automating Certificate Renewal
- Common TLS Errors
- PKI Architecture for DevOps
After completing this series, you will understand how certificates are issued, how trust chains work, how to troubleshoot TLS failures, and how DevOps teams automate certificate management in production.
Who This Training Is For
This training is designed for:
- DevOps engineers
- Platform engineers
- Infrastructure engineers
- Security engineers
- Developers working with TLS certificates
If you have ever seen errors such as:
certificate verify failedunable to get local issuer certificatetls handshake failure
this series will help explain what those errors mean and how to fix them.
Tools Covered
The lessons include hands-on examples using common PKI tools such as:
- openssl s_client
- openssl verify
- Java keytool
- OpenSSL certificate utilities
These tools are widely used by DevOps teams when troubleshooting TLS connections.
How to Use This Training
The lessons build on each other, so it is recommended to follow them in order.
Start with Lesson 1 to understand how TLS and PKI work before diving into certificate troubleshooting and automation.
Why PKI Matters for DevOps
Modern infrastructure depends heavily on TLS encryption. Certificates secure:
- web applications
- API endpoints
- microservices
- internal service communication
- Kubernetes clusters
Understanding how PKI works allows DevOps engineers to deploy and troubleshoot secure infrastructure confidently.