Basic Skills
- Git, Vim, VScode, …
Cloud Platforms
- AWS, GCP, Kubernetes, OpenStack, VMWare, …
Container Solutions
- Docker, Containerd, …
Programming Languages
- Shell scripting, Python, Golang, …
DevOps Tools
- Grafana, Prometheus, Ansible, Jenkins, Nginx, Apache, …
- Terraform, OpenTufu, Packer, Vagrant, …
There have more skills for sure, but may not that important.