How do you convert a DER encoded cert, to a PEM encoded cert

Products

• Network Observability
• CA Performance Management
• Spectrum

Issue/Introduction

How do you convert a DER encoded cert, to a PEM encoded cert for use with SslConfig or others scripts that require a PEM?

Environment

All supported DX NetOps releases

Cause

Performance Management requires a PEM, but some Certificate Authorities only give out certs in DER encoding.

Resolution

openssl x509 -inform der -in certificate.cer -out certificate.pem