Self-Healing Container Clusters
Automated pod auto-scaling, ingress load balancing, and health check restarts for containerized microservices.
CLOUD & DEVOPS ENGINEERING
Hardened cloud infrastructure, zero downtime.
We design, provision, and maintain containerized cloud infrastructure, Terraform IaC pipelines, and hardened self-hosted stacks built for production resilience.
CLOUD INFRA SPECSMAILCOW PROD
ContainersDocker & Kubernetes
IaC ProviderTerraform & Helm
Self-Hosted MailMailcow (Postfix/Dovecot)
Deployment ModeBlue-Green Zero Downtime
Operating Self-Hosted Stack Since 2017
2017 - 2026Proven Infra
Self-hosted Mailcow stack in production
99.99%High Availability
Production infrastructure uptime
Zero DowntimeZero Risk
Blue-green atomic deployment pipeline
100% IaCReproducible
Terraform infrastructure as code
01 / DEVOPS CAPABILITIES
Cloud infrastructure engineering.
Reproducible Infrastructure
Managing cloud VPC subnets, firewall security groups, and storage volumes strictly as version-controlled Terraform code.
Mailcow Mail & Groupware
Hardening mail servers with Postfix, Dovecot, Rspamd spam filters, SOGo webmail, and Unbound DNSSEC resolvers.
02 / INFRASTRUCTURE PHILOSOPHY
Infrastructure should be invisible, automated, and self-healing.
If a server fails at 3 AM, automated Watchdog daemons and Kubernetes health checks should recover it before an engineer wakes up.
03 / DEVOPS TOOLCHAIN
Curated DevOps matrix.
01 // CONTAINERS
- Docker & Docker Compose
- Kubernetes (K8s / LKE)
- Helm Package Manager
- Containerd Runtime
02 // PROVISIONING
- Terraform IaC
- Ansible Configuration
- Cloud-Init Scripts
- Hostinger SSR Deployment
03 // MAIL & DNS
- Mailcow (Postfix/Dovecot)
- Rspamd & Fail2Ban
- Unbound DNSSEC
- Let's Encrypt Certbot
04 // MONITORING
- Prometheus Metrics
- Grafana BI Dashboards
- ClickHouse Log Ingest
- Uptime Kuma Alerts
04 / INFRASTRUCTURE WORKFLOW
Our 4-step DevOps deployment pipeline.
Server & Security Audit
Auditing current server topology, open ports, and SSL configuration.
Terraform Definition
Defining cloud resources as version-controlled Terraform modules.
Automated Testing
Configuring automated build pipelines and Docker image scanning.
Zero-Downtime Launch
Executing blue-green DNS cutover with continuous monitoring.
05 / INSPECTABLE CODE
Cloud & DevOps code snippets.
infra/k8s_cluster.tf
Declarative Infrastructure as Code deploying hardened Kubernetes cluster with automated TLS certificate renewal and private VPC subnets.
1resource "linode_lke_cluster" "prod_cluster" {2 label = "arivu-prod-k8s"3 k8s_version = "1.30"4 region = "ap-south" # Bengaluru / India Edge56 pool {7 type = "g6-standard-4"8 count = 39 autoscaler {10 min = 311 max = 1012 }13 }14}06 / GUARANTEES
Infrastructure commitments.
100% Terraform Transfer
You own all Terraform files, Kubernetes manifests, and deployment scripts.
Zero Vendor Lock-In
Infrastructure built on standard Linux, Docker containers, and portable IaC.
Upfront Mutual NDA
Protecting infrastructure topology and access credentials with mutual NDA.
IN-HOUSE INFRASTRUCTURE
Hardened Mailcow Mail Infrastructure
Self-hosting Postfix, Dovecot, Rspamd, and SOGo since 2017 - proving our cloud infrastructure capability on our own primary servers.
MAILCOW INFRA SPECEST. 2017
• Postfix MTA + DKIM Signing
• Rspamd Anti-Spam Machine Learning
• Dovecot IMAP + Fail2Ban Security
• Watchdog Auto-Recovery Daemon
07 / CLOUD DEVOPS FAQS
Questions about cloud & DevOps engineering?
Why does Arivu emphasize self-hosted mail infrastructure on Mailcow?
Operating our internal email on Mailcow (Postfix, Dovecot, Rspamd, SOGo, Unbound DNSSEC) since 2017 demonstrates our hands-on infrastructure capability in running zero-downtime production mail and server environments.