https://opscanopy.com/mission-90/ A free 90-day guided DevOps program from OpsCanopy — one focused lesson a day, from Linux fundamentals to production-ready platform skills. en https://opscanopy.com/mission-90/day/1/ https://opscanopy.com/mission-90/day/1/ Learn what DevOps actually is in under an hour: the code-to-production loop plus your first 6 terminal commands. Free, hands-on, with the real errors I hit. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/2/ https://opscanopy.com/mission-90/day/2/ The Linux filesystem and FHS: where /etc, /var, /home and logs live. Hands-on lab, common errors and fixes. Day 2 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/3/ https://opscanopy.com/mission-90/day/3/ Navigating and managing files in Linux: pwd, ls, cd, and cp/mv/rm — with the no-undo reality of rm. Day 3 of the free 90-day DevOps path. Thu, 09 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/4/ https://opscanopy.com/mission-90/day/4/ Read and edit files in Linux — cat, less, head/tail, nano and vim survival: page huge logs and finally quit vim. Day 4 of the free 90-day DevOps path. Thu, 09 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/5/ https://opscanopy.com/mission-90/day/5/ Linux permissions made clear: read rwx in ls -l, then master chmod, chown and octal like 755 and 644. Day 5 of the free 90-day DevOps path. Thu, 09 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/6/ https://opscanopy.com/mission-90/day/6/ Linux processes & signals: read ps and top, find the CPU-eating PID, and kill it (kill vs kill -9). Day 6 of the free 90-day DevOps path. Thu, 09 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/7/ https://opscanopy.com/mission-90/day/7/ Week 1 Linux review, then play Server Down — a 2 a.m. terminal incident you fix in the browser. Day 7 of the free 90-day DevOps path. Thu, 09 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/8/ https://opscanopy.com/mission-90/day/8/ grep, sed & awk for logs: filter, substitute, extract. Hands-on lab, common errors and fixes, 4 interview questions. Day 8 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/9/ https://opscanopy.com/mission-90/day/9/ Linux pipes & redirection: stdout/stderr, 2>&1, tee, xargs. Hands-on lab, common errors and fixes, 4 interview questions. Day 9 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/10/ https://opscanopy.com/mission-90/day/10/ apt, systemd & journalctl: install packages, run services, read their logs. Hands-on lab, common errors and fixes. Day 10 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/11/ https://opscanopy.com/mission-90/day/11/ Learn networking basics in under an hour: IP, CIDR, DNS, ports and curl -I/-v. Lab, errors, and 4 interview questions. Day 11 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/12/ https://opscanopy.com/mission-90/day/12/ Network troubleshooting with ss, dig, ping: the DNS-to-app flow. Hands-on lab, common errors, and 4 interview questions. Day 12 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/13/ https://opscanopy.com/mission-90/day/13/ SSH keys, config, scp and tunnels: ed25519 pairs, ~/.ssh/config, port forwarding. Hands-on lab, common errors and fixes. Day 13 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/14/ https://opscanopy.com/mission-90/day/14/ Week 2 networking review, then play DNS Detective — chase a 'sometimes down' site through DNS, ports and SSH. Day 14 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/15/ https://opscanopy.com/mission-90/day/15/ Bash scripting: shebang, variables, quoting, if tests, for and while loops. Hands-on lab, common errors and fixes. Day 15 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/16/ https://opscanopy.com/mission-90/day/16/ Shell functions, exit codes, set -euo pipefail and a real tar backup script. Hands-on lab, common errors and fixes. Day 16 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/17/ https://opscanopy.com/mission-90/day/17/ Git for DevOps: commit, branch, merge vs rebase. Hands-on lab, common errors and fixes, interview questions. Day 17 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/18/ https://opscanopy.com/mission-90/day/18/ Learn Git collaboration: remotes, push/pull/fetch, PRs, tags, releases. Common errors and fixes, 4 interview questions. Day 18 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/19/ https://opscanopy.com/mission-90/day/19/ Cron and systemd timers: crontab fields, logging output, .timer/.service units. Hands-on lab, common errors and fixes. Day 19 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/20/ https://opscanopy.com/mission-90/day/20/ Phase 1 Linux review and interview drill: filesystem, permissions, processes, text tools, networking, git. Day 20 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/21/ https://opscanopy.com/mission-90/day/21/ Week 3 review — shell scripting, git and cron — then play The Locked File: a cron deploy dies on a lost execute bit. Day 21 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/22/ https://opscanopy.com/mission-90/day/22/ Containers vs VMs: namespaces, cgroups and a shared kernel make Docker fast. Hands-on lab, common errors and fixes. Day 22 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/23/ https://opscanopy.com/mission-90/day/23/ Docker images vs containers: pull, run, ps, stop, rm, plus Docker Hub tags. Hands-on lab, common errors and fixes. Day 23 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/24/ https://opscanopy.com/mission-90/day/24/ Write and optimize a Dockerfile: FROM, COPY, RUN, CMD, layers and caching. Hands-on lab, common errors and fixes. Day 24 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/25/ https://opscanopy.com/mission-90/day/25/ Docker networking and port mapping: map ports with -p, reach containers by name. Hands-on lab, common errors and fixes. Day 25 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/26/ https://opscanopy.com/mission-90/day/26/ Docker volumes & persistent data: named volumes, bind mounts, persist a database. Hands-on lab, common errors and fixes. Day 26 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/27/ https://opscanopy.com/mission-90/day/27/ docker compose multi-container apps: services, ports, volumes, depends_on. Hands-on web+db lab, common errors and fixes. Day 27 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/28/ https://opscanopy.com/mission-90/day/28/ Week 4 Docker review — images, Dockerfiles, networking, volumes, compose. Play Docker Rescue; common errors and fixes. Day 28 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/29/ https://opscanopy.com/mission-90/day/29/ Multi-stage builds, tiny images, non-root, scanning. Hands-on lab, common errors and fixes, and 4 interview questions. Day 29 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/30/ https://opscanopy.com/mission-90/day/30/ Debug Docker containers: logs, exec, inspect, stats. Hands-on lab, common errors and fixes, and 4 interview questions. Day 30 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/31/ https://opscanopy.com/mission-90/day/31/ Learn CI/CD: pipelines, environments, artifacts. Hands-on lab, common errors and fixes, and 4 real interview questions. Day 31 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/32/ https://opscanopy.com/mission-90/day/32/ GitHub Actions workflow anatomy: name, on, jobs, steps. Hands-on lab, common errors and fixes, and 4 interview questions. Day 32 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/33/ https://opscanopy.com/mission-90/day/33/ GitHub Actions: needs, strategy.matrix, secrets. Hands-on lab, common errors and fixes, and 4 interview questions. Day 33 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/34/ https://opscanopy.com/mission-90/day/34/ Build & push a Docker image to GHCR in GitHub Actions with SHA tags. Common errors and fixes, and 4 interview questions. Day 34 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/35/ https://opscanopy.com/mission-90/day/35/ Harden CI/CD pipeline: pin actions, scope token, cache. Hands-on lab, common errors and fixes, and 4 interview questions. Day 35 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/36/ https://opscanopy.com/mission-90/day/36/ Testing in CI: lint, unit tests, and quality gates. Hands-on lab, common errors and fixes, and 4 interview questions. Day 36 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/37/ https://opscanopy.com/mission-90/day/37/ Semantic versioning, git tags, and a CHANGELOG. Hands-on lab, common errors and fixes, and 4 interview questions. Day 37 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/38/ https://opscanopy.com/mission-90/day/38/ Rolling, blue-green, canary deploys and rollback. Hands-on lab, common errors and fixes, and 4 interview questions. Day 38 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/39/ https://opscanopy.com/mission-90/day/39/ Pipeline security in CI: secrets, OIDC, Trivy scans. Hands-on lab, common errors and fixes, and 4 interview questions. Day 39 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/40/ https://opscanopy.com/mission-90/day/40/ Phase 2 review of containers and CI/CD. Hands-on lab, common errors and fixes, and 4 interview questions. Day 40 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/41/ https://opscanopy.com/mission-90/day/41/ Scaffold a FastAPI URL shortener: git init, .gitignore, a Python venv, a /healthz route, run with uvicorn. Day 41 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/42/ https://opscanopy.com/mission-90/day/42/ Multi-stage Dockerfile for FastAPI: builder venv, slim non-root runtime, smaller image. Hands-on lab and errors. Day 42 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/43/ https://opscanopy.com/mission-90/day/43/ Compose a FastAPI + Postgres stack: db healthcheck, depends_on service_healthy, named volume. Hands-on lab and fixes. Day 43 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/44/ https://opscanopy.com/mission-90/day/44/ Build a GitHub Actions CI pipeline for FastAPI: ruff, pytest on a Postgres service, tag-gated GHCR push. Day 44 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/45/ https://opscanopy.com/mission-90/day/45/ Ship v1.0.0: annotated git tag, gh release, README with a CI badge. Common errors and fixes, and 4 interview questions. Day 45 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/46/ https://opscanopy.com/mission-90/day/46/ Cloud fundamentals: AWS regions, AZs & shared responsibility. Hands-on lab, common errors, 4 interview questions. Day 46 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/47/ https://opscanopy.com/mission-90/day/47/ AWS account hygiene: lock down root, enable MFA, create an IAM user, set a budget. Lab, errors, 4 interview questions. Day 47 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/48/ https://opscanopy.com/mission-90/day/48/ EC2: launch a free-tier box, secure it, SSH in, terminate. Hands-on lab, common errors, and 4 real interview questions. Day 48 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/49/ https://opscanopy.com/mission-90/day/49/ Week 7 AWS review: cloud fundamentals, IAM hygiene, EC2, cost control. Play AWS Bill Shock; common errors and fixes. Day 49 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/50/ https://opscanopy.com/mission-90/day/50/ VPC: subnets, CIDR, route tables, internet gateways. Hands-on lab, common errors and fixes, and 4 interview questions. Day 50 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/51/ https://opscanopy.com/mission-90/day/51/ NAT gateway, public vs private subnets, bastion hosts. Hands-on lab, common errors and fixes, and 4 interview questions. Day 51 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/52/ https://opscanopy.com/mission-90/day/52/ S3: buckets, policies, static hosting, lifecycle rules. Hands-on lab, common errors and fixes, and 4 interview questions. Day 52 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/53/ https://opscanopy.com/mission-90/day/53/ RDS managed databases: Multi-AZ, backups, snapshots. Hands-on lab, common errors and fixes, and 4 interview questions. Day 53 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/54/ https://opscanopy.com/mission-90/day/54/ Load balancers and auto scaling: ALB vs NLB, target groups, health checks. Lab, common errors, 4 interview questions. Day 54 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/55/ https://opscanopy.com/mission-90/day/55/ Route 53 DNS and ACM: hosted zones, alias records, free TLS. Hands-on lab, common errors, and 4 interview questions. Day 55 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/56/ https://opscanopy.com/mission-90/day/56/ Week 8 AWS review: VPC, S3, RDS, load balancers, Route 53. Play Database Recovery; common errors and fixes. Day 56 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/57/ https://opscanopy.com/mission-90/day/57/ CloudWatch metrics, logs, and alarms via SNS email. Hands-on lab, common errors and fixes, and 4 interview questions. Day 57 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/58/ https://opscanopy.com/mission-90/day/58/ AWS CLI v2 scripting: --query, profiles, --output. Hands-on lab, common errors and fixes, and 4 interview questions. Day 58 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/59/ https://opscanopy.com/mission-90/day/59/ ECR + ECS Fargate: push an image, run it serverless. Hands-on lab, common errors and fixes, and 4 interview questions. Day 59 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/60/ https://opscanopy.com/mission-90/day/60/ Prometheus & Grafana metrics: PromQL, node_exporter. Hands-on lab, common errors and fixes, and 4 interview questions. Day 60 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/61/ https://opscanopy.com/mission-90/day/61/ Prometheus alerts, SLOs and Loki log aggregation. Hands-on lab, common errors and fixes, and 4 interview questions. Day 61 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/62/ https://opscanopy.com/mission-90/day/62/ Plan a production AWS architecture for linkstash: VPC, public/private subnets, ALB, Fargate, RDS, cost estimate. Day 62 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/63/ https://opscanopy.com/mission-90/day/63/ Build an AWS VPC for linkstash: public/private subnets across 2 AZs, ECS IAM roles, and tight security groups. Day 63 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/64/ https://opscanopy.com/mission-90/day/64/ Deploy containers behind an AWS ALB: push to ECR, run linkstash on ECS Fargate with RDS Postgres. Day 64 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/65/ https://opscanopy.com/mission-90/day/65/ Front linkstash with Route 53, an ACM TLS cert and CloudWatch alarms on AWS, then tear the whole stack down. Day 65 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/66/ https://opscanopy.com/mission-90/day/66/ Why Kubernetes: self-healing, scaling, desired-state beyond compose. Install kind, list nodes; common errors and fixes. Day 66 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/67/ https://opscanopy.com/mission-90/day/67/ K8s architecture and kubectl: API server, etcd, scheduler, kubelet on a local kind cluster. Hands-on lab, common fixes. Day 67 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/68/ https://opscanopy.com/mission-90/day/68/ Kubernetes Pods vs Deployments: replicas, rolling updates and rollback. Hands-on lab, common errors and fixes. Day 68 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/69/ https://opscanopy.com/mission-90/day/69/ Kubernetes Services: ClusterIP, NodePort, selectors, cluster DNS, kube-proxy. Hands-on kind lab, common errors and fixes. Day 69 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/70/ https://opscanopy.com/mission-90/day/70/ Kubernetes ConfigMaps and Secrets: env vars, volume mounts, base64 caveats. Hands-on lab, common errors and fixes. Day 70 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/71/ https://opscanopy.com/mission-90/day/71/ Kubernetes probes & resource limits: liveness, readiness, OOMKilled, QoS. Hands-on lab, common errors and fixes. Day 71 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/72/ https://opscanopy.com/mission-90/day/72/ Debug Kubernetes workloads: kubectl describe, logs -p, events, CrashLoopBackOff. Hands-on lab, common errors and fixes. Day 72 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/73/ https://opscanopy.com/mission-90/day/73/ Week 11 Kubernetes review: Pods, Deployments, Services, debugging. Play Kubernetes Chaos; common errors and fixes. Day 73 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/74/ https://opscanopy.com/mission-90/day/74/ Kubernetes Ingress: route by host and path to many Services via ingress-nginx. Hands-on lab, common errors and fixes. Day 74 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/75/ https://opscanopy.com/mission-90/day/75/ Helm 3 charts, values and releases: helm create, install, upgrade, rollback on a kind cluster. Common errors and fixes. Day 75 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/76/ https://opscanopy.com/mission-90/day/76/ Terraform first apply: init, plan, apply, destroy a local file. IaC, providers, state. Common errors and fixes. Day 76 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/77/ https://opscanopy.com/mission-90/day/77/ Terraform variables, outputs and state: tfvars, -var, terraform output, terraform.tfstate. Lab and common errors. Day 77 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/78/ https://opscanopy.com/mission-90/day/78/ Terraform modules and workspaces: call one module twice, dev and prod state. Hands-on lab, common errors and fixes. Day 78 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/79/ https://opscanopy.com/mission-90/day/79/ Terraform + AWS: apply a VPC, S3 bucket and security group, then destroy. Hands-on lab, common errors and fixes. Day 79 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/80/ https://opscanopy.com/mission-90/day/80/ Week 12 Terraform review: state locks, drift, force-unlock then apply. Play Terraform Trouble; common errors and fixes. Day 80 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/81/ https://opscanopy.com/mission-90/day/81/ Design the linkstash Kubernetes capstone: single-node k3s on AWS via Terraform, Helm, ingress, TLS, and a cost plan. Day 81 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/82/ https://opscanopy.com/mission-90/day/82/ Terraform a single-node k3s cluster on AWS: VPC, subnet, EC2, Elastic IP, then pull a working kubeconfig. Day 82 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/83/ https://opscanopy.com/mission-90/day/83/ Deploy linkstash to k3s: Kubernetes manifests for in-cluster Postgres, a ConfigMap, a Secret, Deployments and Services. Day 83 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/84/ https://opscanopy.com/mission-90/day/84/ Package linkstash as a Helm chart and serve it over HTTPS: Traefik Ingress, cert-manager, Let's Encrypt on k3s. Day 84 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/85/ https://opscanopy.com/mission-90/day/85/ End-to-end test linkstash on k3s over HTTPS, write the portfolio README, push to GitHub, then terraform destroy to ₹0. Day 85 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/86/ https://opscanopy.com/mission-90/day/86/ DevOps resume: impact-first bullets, grouped skills, and three projects that beat the ATS. Hands-on lab and fixes. Day 86 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/87/ https://opscanopy.com/mission-90/day/87/ GitHub portfolio polish: a README with what, why and a diagram, pinned repos, and a demo. Common mistakes and fixes. Day 87 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/88/ https://opscanopy.com/mission-90/day/88/ Incident management: severity levels, incident commander, runbooks, blameless postmortems, and error budgets. Day 88 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/89/ https://opscanopy.com/mission-90/day/89/ DevOps interview drill: rapid-fire answers across the stack, plus a site-down triage loop and common mistakes. Day 89 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT https://opscanopy.com/mission-90/day/90/ https://opscanopy.com/mission-90/day/90/ Capstone incident response: fix a full-stack midnight outage upstream-first — security group, Kubernetes Secret, DNS. Day 90 of the free 90-day DevOps path. Sun, 05 Jul 2026 00:00:00 GMT