some key default port numbers that a DevOps engineer should be familiar with

#devops #aws #kubernetes #linux

"Sometimes we end up not answering a simple question—here is one example."
Can you tell me The Default Port Number for

HTTP: 80
HTTPS: 443
SSH: 22
RDP:3389
FTP: 21 (for file transfer protocol)
SFTP: 22 (secure file transfer over SSH)
Telnet: 23 (for unencrypted remote login)
SMTP: 25 (for sending emails)
DNS: 53 (for domain name system queries)
NFS: 2048,2049,111(for Network File System)

===== Continuous Integration/Continuous Deployment (CI/CD) =====
Jenkins: 8080 (default), 8443 (HTTPS)
GitLab CI: 80 (HTTP), 443 (HTTPS)

==== SonarQubre =====
SonarQube is 9000.

==== Artifact Repositories =======
Nexus Repository: 8081 (default for HTTP)
JFrog Artifactory is 8081 (for HTTP) and 443 (for HTTPS).

====== Containerization and Orchestration ========
Docker:
Docker Daemon API: 2375 (HTTP), 2376 (HTTPS)

====== Kubernetes =====
Kube API Server: 6443
Kubelet: 10250
Kube Proxy: 10256
Etcd: 2379 (client) and 2380 (peer)

===== Monitoring and Logging =======
Prometheus: 9090
Grafana: 3000
ELK Stack (Elasticsearch, Logstash, Kibana):
Elasticsearch: 9200 (HTTP), 9300 (Transport)
Logstash: 5044 (Beats), 5000 (TCP/UDP)
Kibana: 5601
Splunk: 8089

Kiali:
Default port: 20001

Jaeger:
Jaeger UI: 16686
Jaeger Collector: 14268
Jaeger Agent: 5775 (UDP)

=====Service Mesh====
Istio:
Envoy Proxy: 15001 (Admin), 15000 (Gateway)
Istiod: 15010 (GRPC), 15014 (HTTPS)