First, we create a private key: openssl genrsa -out dev.deliciousbrains.com.key 2048 Then we create a CSR: And finally to sign a certificate with a .csr created we will do: openssl ca -config sign.ca.conf -extfile req.base.domain.conf -extensions my_extensions -out base.domain.crt -infiles base.domain.csr to inspect the cert: openssl x509 -in base.domain.crt -noout -text Creating Certificates for VMware SRM or vCenter using openSSL made easy, with Video! It can also be used to create a self-signed certificate for the CA, which is exactly what we want in the first step. In this article I will share the steps to create Certificate Authority Certificate and then use this CA certificate to sign a certificate. To verify the content of private key we created above use openssl command as shown below: Now we will use the private key with openssl to create certificate authority certificate ca.cert.pem. You'll probably need to. We will use the same encrypted password file for all our examples in this article to demonstrate openssl create certificate chain examples. Linux, Cloud, Containers, Networking, Storage, Virtualization and many more topics, openssl genrsa -des3 -passout file:mypass.enc -out ca.key 4096, openssl rsa -noout -text -in ca.key -passin file:mypass.enc, openssl req -new -x509 -days 365 -key ca.key -out ca.cert.pem -passin file:mypass.enc, openssl x509 -noout -text -in ca.cert.pem, openssl genrsa -des3 -passout file:mypass.enc -out server.key 4096, openssl req -new -key server.key -out server.csr -passin file:mypass.enc, openssl rsa -noout -text -in server.key -passin file:mypass.enc, openssl x509 -req -days 365 -in server.csr -CA ca.cert.pem -CAkey ca.key -CAcreateserial -out server.crt -passin file:mypass.enc, Step 2: OpenSSL encrypted data with salted password, Step 4: Create Certificate Authority Certificate, Step 5: Generate a server key and request for signing (CSR), OpenSSL verify Certificate Signing Request (CSR), Beginners guide to understand all Certificate related terminologies used with openssl, Generate openssl self-signed certificate with example, Create certificate chain (CA bundle) using your own Root CA and Intermediate Certificates with openssl, Create server and client certificates using openssl for end to end encryption with Apache over SSL, Create SAN Certificate to protect multiple DNS, CN and IP Addresses of the server in a single certificate, steps for openssl encd data with salted password to encrypt the password file, Create Certificate Authority using OpenSSL, OpenSSL create certificate chain with Root & Intermediate CA, 5 easy steps to recover LVM2 partition, PV, VG, LVM metdata in Linux, Understand certificate related terminologies, Configure secure logging with rsyslog TLS, Transfer files between two hosts with HTTPS, 5 useful tools to detect memory leaks with examples, 15 steps to setup Samba Active Directory DC CentOS 8, 100+ Linux commands cheat sheet & examples, List of 50+ tmux cheatsheet and shortcuts commands, RHEL/CentOS 8 Kickstart example | Kickstart Generator, 10 single line SFTP commands to transfer files in Unix/Linux, Tutorial: Beginners guide on linux memory management, 5 tools to create bootable usb from iso linux command line and gui, 30+ awk examples for beginners / awk command tutorial in Linux/Unix, Top 15 tools to monitor disk IO performance with examples, Overview on different disk types and disk interface types, 6 ssh authentication methods to secure connection (sshd_config), 27 nmcli command examples (cheatsheet), compare nm-settings with if-cfg file, How to zip a folder | 16 practical Linux zip command examples, How to check security updates list & perform linux patch management RHEL 6/7/8, Steps to install Kubernetes Cluster with minikube, Kubernetes labels, selectors & annotations with examples, How to perform Kubernetes RollingUpdate with examples, Kubernetes ReplicaSet & ReplicationController Beginners Guide, How to assign Kubernetes resource quota with examples, 50 Maven Interview Questions and Answers for freshers and experienced, 20+ AWS Interview Questions and Answers for freshers and experienced, 100+ GIT Interview Questions and Answers for developers, 100+ Java Interview Questions and Answers for Freshers & Experienced-2, 100+ Java Interview Questions and Answers for Freshers & Experienced-1. 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