Install Guide: Kubernetes

This document is written as executable instructions for Claude Code

Read the entire Before We Begin section first and collect the user's answers. Then follow each section in order. Every check must pass (or be acknowledged) before moving to the next section.

Before We Begin

Present each question to the user and record their answers. Use the recorded answers throughout all subsequent steps.

Q1 — Run Mode

"Are you running me directly on the machine that has kubectl access to the cluster, or from a workstation that will SSH into a jump host?"

local — kubectl is available directly. Use kubectl commands as-is.
remote — Ask: "What is the SSH user and hostname of the machine with kubectl access? (e.g. sean@192.168.1.100)" Record as SSH_TARGET. Prefix all kubectl/ssh commands accordingly.

Q2 — Missing Prerequisites

"If I find a required tool is missing, should I attempt to install it automatically (requires sudo), or report what's missing and stop so you can handle it?"

auto — Attempt installation automatically.
diagnose — Report with fix instructions and stop.

Q3 — Secrets

"Should I generate secure random values for the database password and SECRET_KEY, or will you provide them?"

generate — Claude Code generates values using openssl rand.
provide — Ask the user for each value before proceeding.

Q4 — GPU Node

"Should I discover the available nodes in your cluster and let you choose the GPU node, or will you provide the node name directly?"

discover — Run kubectl get nodes and present the list for the user to choose from.
provide — Ask: "What is the exact Kubernetes node name of the GPU host?" Record as GPU_NODE.

Record answers as RUN_MODE, PREREQ_MODE, SECRETS_MODE, NODE_MODE. Confirm with the user before proceeding.

Pre-Flight Checks

Run all checks before any installation steps. For each result:

PASS — continue silently
WARN — print the warning and ask whether to continue
FAIL (auto) — attempt the documented fix, re-check; if still failing, stop
FAIL (diagnose) — print the issue and fix instructions, then stop

Tooling

kubectl

kubectl version --client --short 2>/dev/null || echo "NOT_FOUND"

PASS: any version returned
FAIL auto: sudo snap install kubectl --classic
FAIL diagnose: "Install kubectl: https://kubernetes.io/docs/tasks/tools/"

Cluster reachable

kubectl cluster-info 2>/dev/null | head -2

PASS: returns control plane URL
FAIL: "Cannot reach Kubernetes cluster. Check kubeconfig: kubectl config current-context. Ensure VPN or network access is active."

Ingress controller

kubectl get ingressclass 2>/dev/null | grep -c "public" || echo "0"

PASS: returns 1 or higher
WARN returns 0: "No ingress class named 'public' found. The manifest uses ingressClassName: public. Either install an NGINX ingress controller or update the manifest to match your ingress class." Show available classes: kubectl get ingressclass

NGINX Ingress Controller pods running

kubectl get pods -A | grep ingress | grep -v Terminating

PASS: at least one pod in Running state
WARN: "No ingress controller pods found. Install with: kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/cloud/deploy.yaml"

GPU Node

If NODE_MODE=discover:

kubectl get nodes -o wide

Present the full node list to the user and ask them to identify the GPU node. Record as GPU_NODE.

If NODE_MODE=provide: Use the value already recorded as GPU_NODE.

Node exists

kubectl get node $GPU_NODE 2>/dev/null | grep -c "Ready" || echo "0"

PASS: returns 1
FAIL: "Node '$GPU_NODE' not found or not Ready in the cluster. Verify the node name with kubectl get nodes."

NVIDIA Device Plugin running

kubectl get pods -n kube-system | grep nvidia-device-plugin | grep -c Running || echo "0"

PASS: returns 1 or higher

WARN returns 0:

"NVIDIA Device Plugin not found. GPU scheduling will not work.
Install with:
kubectl apply -f https://raw.githubusercontent.com/NVIDIA/k8s-device-plugin/v0.14.0/nvidia-device-plugin.yml"

GPU schedulable on node

kubectl describe node $GPU_NODE | grep -A5 "Capacity:" | grep "nvidia.com/gpu"

PASS: shows nvidia.com/gpu: 1 (or more)
FAIL: "GPU is not schedulable on $GPU_NODE. Check that the NVIDIA driver and device plugin are installed on that node."

Storage

Host storage paths — check or create on GPU node

If RUN_MODE=local and the GPU node is this machine, or if RUN_MODE=remote and you can SSH to the GPU node directly:

# Run on the GPU node:
sudo mkdir -p /data/mistudio/postgres /data/mistudio/redis /data/mistudio/data
sudo chown -R 1000:1000 /data/mistudio
ls -la /data/mistudio/

If the GPU node is not directly accessible, instruct the user:

"Please ensure these directories exist on node $GPU_NODE before continuing:

/data/mistudio/postgres

/data/mistudio/redis

/data/mistudio/data With ownership 1000:1000."

Disk space on GPU node data path If accessible:

df -BG /data | tail -1 | awk '{print $4}' | tr -d 'G'

PASS ≥ 100 GB free
WARN 50–99 GB: "Limited disk space on /data. Models and activation data will fill this quickly."
FAIL < 50 GB: "Less than 50GB free on /data. Provision more storage before deploying."

Images

Backend image pullable

docker pull hitsai/mistudio-backend:latest 2>&1 | tail -1

PASS: Status: Downloaded newer image or Status: Image is up to date
FAIL: "Cannot pull hitsai/mistudio-backend:latest. Check internet access from the cluster node and Docker Hub availability."

Configuration

GPU Node Name

Confirm GPU_NODE is recorded from the Pre-Flight section above.

Domain Name

Ask the user:

"What hostname should miStudio be accessible at? Press Enter to use the default: k8s-mistudio.hitsai.local"

Record as DOMAIN. Default: k8s-mistudio.hitsai.local.

Ask the user:

"What is the IP address of the GPU node ($GPU_NODE)? This is used for the hostAlias and DNS/hosts configuration."

Record as GPU_NODE_IP.

Secrets

If SECRETS_MODE=generate:

POSTGRES_PASSWORD=$(openssl rand -hex 16)
SECRET_KEY=$(openssl rand -hex 32)

Print both values:

"Generated credentials — save these now: POSTGRES_PASSWORD: $POSTGRES_PASSWORD SECRET_KEY: $SECRET_KEY"

If SECRETS_MODE=provide: Ask the user:

"What should the PostgreSQL password be?" → POSTGRES_PASSWORD
"What should the SECRET_KEY be?" → SECRET_KEY

Optional Integrations

Ask the user:

"Do you have a local Neuronpedia instance to connect to? (Press Enter to skip)"

If yes: collect NEURONPEDIA_URL and NEURONPEDIA_DB_URL
If no: these env vars will be left as-is in the manifest (they won't cause errors if the service is unreachable)

Prepare the Manifest

Clone the repository (run from the machine with kubectl access):

git clone https://github.com/Onegaishimas/miStudio.git
cd miStudio
cp k8s/mistudio-deployment.yaml k8s/mistudio-deployment.local.yaml

Work with mistudio-deployment.local.yaml for all edits. Apply the following substitutions:

Node selector:

sed -i "s/mcs-lnxgpu01/$GPU_NODE/g" k8s/mistudio-deployment.local.yaml

Host IP and domain:

sed -i "s/192\.168\.244\.61/$GPU_NODE_IP/g" k8s/mistudio-deployment.local.yaml
sed -i "s/k8s-mistudio\.mcslab\.io/$DOMAIN/g" k8s/mistudio-deployment.local.yaml
sed -i "s/k8s-mistudio\.hitsai\.net/$DOMAIN/g" k8s/mistudio-deployment.local.yaml

PostgreSQL password (update both POSTGRES_PASSWORD value and all DATABASE_URL / DATABASE_URL_SYNC values):

sed -i "s/value: mistudio$/value: $POSTGRES_PASSWORD/g" k8s/mistudio-deployment.local.yaml
sed -i "s|mistudio:mistudio@postgres|mistudio:$POSTGRES_PASSWORD@postgres|g" k8s/mistudio-deployment.local.yaml

SECRET_KEY:

sed -i "s/mistudio-secret-key-change-in-production/$SECRET_KEY/g" k8s/mistudio-deployment.local.yaml

Verify the substitutions look correct before applying:

grep -E "hostname|SECRET_KEY|POSTGRES_PASSWORD|DATABASE_URL|host:" k8s/mistudio-deployment.local.yaml

Deployment

Step 1 — Apply the manifest

kubectl apply -f k8s/mistudio-deployment.local.yaml

Expected output:

namespace/mistudio created (or unchanged)
deployment.apps/postgres created
service/postgres created
deployment.apps/redis created
service/redis created
deployment.apps/mistudio-backend created
service/mistudio-backend created
deployment.apps/mistudio-frontend created
service/mistudio-frontend created
service/ollama-proxy created
ingress.networking.k8s.io/mistudio-ingress created
ingress.networking.k8s.io/mistudio-websocket-ingress created
ingress.networking.k8s.io/mistudio-ollama-ingress created

Step 2 — Wait for pods

kubectl rollout status deployment/postgres -n mistudio --timeout=120s
kubectl rollout status deployment/redis -n mistudio --timeout=120s
kubectl rollout status deployment/mistudio-backend -n mistudio --timeout=300s
kubectl rollout status deployment/mistudio-frontend -n mistudio --timeout=120s

The backend pod runs three containers (backend, celery-worker, celery-beat) and will show 3/3 when fully ready. Database migrations run automatically — allow up to 3 minutes on first boot.

Step 3 — Configure DNS

Add the domain to the client machine's hosts file:

grep -q "$DOMAIN" /etc/hosts || echo "$GPU_NODE_IP  $DOMAIN" | sudo tee -a /etc/hosts

If RUN_MODE=remote, instruct the user to also add this entry on any machine that will access miStudio.

Post-Install Verification

# Pod status — backend must show 3/3
kubectl get pods -n mistudio

# Backend container logs
kubectl logs -n mistudio deployment/mistudio-backend -c backend --tail=30

# Celery worker logs
kubectl logs -n mistudio deployment/mistudio-backend -c celery-worker --tail=20

# GPU allocated to backend pod
kubectl exec -n mistudio deployment/mistudio-backend -c backend -- nvidia-smi

# API health endpoint
curl -s http://$DOMAIN/api/v1/system/health

# Frontend reachable
curl -sf http://$DOMAIN > /dev/null && echo "Frontend: OK" || echo "Frontend: FAIL"

Print access summary:

✓ miStudio is running at: http://$DOMAIN
✓ API docs:               http://$DOMAIN/api/docs
✓ Namespace:              mistudio
✓ GPU node:               $GPU_NODE

Updating to New Images

When new images are available (after a CI build completes):

kubectl rollout restart deployment/mistudio-backend -n mistudio
kubectl rollout restart deployment/mistudio-frontend -n mistudio
kubectl rollout status deployment/mistudio-backend -n mistudio --timeout=300s
kubectl rollout status deployment/mistudio-frontend -n mistudio --timeout=300s

Recreate strategy

The backend uses strategy: Recreate. The old pod terminates completely before the new one starts — this prevents two pods from competing for the GPU simultaneously.

Troubleshooting Quick Reference

Symptom	Check	Fix
Backend pod stuck at `0/3`	`kubectl describe pod -n mistudio -l app=mistudio-backend`	Check Events section — usually image pull failure or GPU not schedulable
`ImagePullBackOff`	`kubectl get events -n mistudio`	Node cannot reach Docker Hub — check internet access on GPU node
GPU not allocated	`kubectl describe node $GPU_NODE \| grep nvidia`	NVIDIA device plugin not running — reinstall it
`3/3` but API returns 503	`kubectl logs -n mistudio deployment/mistudio-backend -c backend`	Migration failure or DB not ready — check postgres pod
WebSocket disconnects immediately	Check WebSocket ingress is applied	`kubectl get ingress -n mistudio` — both ingresses must exist
Celery worker OOM	`kubectl logs -n mistudio deployment/mistudio-backend -c celery-worker`	Reduce batch size in job config or free VRAM by unloading Ollama
Data missing after pod restart	`ls /data/mistudio/data` on GPU node	hostPath volume must exist with correct ownership

Before We Begin​

Pre-Flight Checks​

Tooling​

GPU Node​

Storage​

Images​

Configuration​

GPU Node Name​

Domain Name​

Secrets​

Optional Integrations​

Prepare the Manifest​

Deployment​

Step 1 — Apply the manifest​

Step 2 — Wait for pods​

Step 3 — Configure DNS​

Post-Install Verification​

Updating to New Images​

Troubleshooting Quick Reference​

Before We Begin

Pre-Flight Checks

Tooling

GPU Node

Storage

Images

Configuration

GPU Node Name

Domain Name

Secrets

Optional Integrations

Prepare the Manifest

Deployment

Step 1 — Apply the manifest

Step 2 — Wait for pods

Step 3 — Configure DNS

Post-Install Verification

Updating to New Images

Troubleshooting Quick Reference