Cloud Computing:
GCP, AWS, Azure, IONOS, Aliyun, OTC, Hetzner, OCI
Linux/UNIX administration:
RHEL/CentOS/Rocky Linux, Debian, Ubuntu, OpenSUSE, OpenBSD, FreeBSD
Orchestration:
GKE, EKS, OKE, Vanilla Kubernetes, K3s, OpenShift, Rancher, Knative, n8n, KubeFlow, Apache Airflow
IaaC:
Terraform, OpenTofu, Tilt
Configuration management:
Ansible, Chef, Puppet
CI/CD:
Jenkins, Gitlab CI, Bitbucket CI, Github Actions, Argo Workflows, Argo CD, Werf
Observability:
Prometheus, Grafana, Loki, Tempo, Thanos, OpenTelemetry, Fluentd, FluentBit, Langfuse, Elasticsearch, Logstash, Kibana, Zabbix, Nagios
Service mesh:
Linkerd, Istio, Cilium
Package Management:
HELM, dep, rpm
AI/ML:
OpenLLM, Ollama, OpenDevin
Web:
NGINX, Kong, OpenResty, Apache, lighttpd
Proxy:
HAProxy, Squid, Envoy, LiteLLM
Caching:
Varnish, Redis, Memcached
Database:
PostgreSQL, CNPG, MySQL, Clickhouse, SQLite, MongoDB, Tarantool
Messaging:
Kafka, Zookeeper, VerneMQ, Memphis
Source version control:
Git, GitHub, GitLab, gitolite, SVN
Vulnerability assessment:
OpenVAS, Trivy, Nessus
Policy management:
Kyverno, OPA
Provisioning:
Vagrant, Packer, Karpenter
Containerization:
Docker, containerd, LXC
DNS:
BIND, CoreDNS, KubeDNS, Cloudflare API
SMTP:
Exim, Postfix, Mailu
Virtualization:
KVM, ESXi
Scripting:
Bash, Go, Perl
Infrastructure architecture