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feat: kubernetes support for tls/x509 redis and more modernizations (#349)
fixes #347 ## Summary Comprehensive security and architecture overhaul of the Kubernetes deployment, replacing the old Pipy proxy layer with direct mTLS connections and adding production-quality infrastructure. ### mTLS by default (MariaDB + Redis) - All connections use mutual TLS (X509 client certificate verification) by default — Redis, Sentinel, MariaDB replication, OpenEMR-to-database, and phpMyAdmin-to-database - Certificates managed by cert-manager (upgraded from v1.11.0 to v1.20.2) - Clear downgrade instructions in README for TLS-only or plain TCP modes ### Redis Sentinel with phpredis - Removed Pipy proxy layer — OpenEMR connects directly via `SESSION_STORAGE_MODE=predis-sentinel` using native phpredis with distributed session locking - Sentinel discovery for automatic failover (~1s recovery, tested) - Standardized sentinel port to 26379 - Sentinel `requirepass` for auth even when mTLS is downgraded - Added `replica-announce-ip` so sentinel returns hostnames (required for TLS cert validation) - Three Redis ACL users with least-privilege: `default` (app sessions), `replication` (replica sync), `admin` (sentinel monitoring) ### Secrets management - Moved all hardcoded passwords from ConfigMaps to Kubernetes Secrets (`redis-credentials`, `mysql-replication-credentials`) - ConfigMaps use placeholder tokens; init containers inject passwords at runtime via sed - OpenEMR uses `secretKeyRef` for all password env vars ### Multi-node support - Replaced broken `mauilion/hostpath-provisioner` with in-cluster NFS provisioner (NFS Ganesha) - PVCs upgraded from `ReadWriteOnce` to `ReadWriteMany` with `nfs` StorageClass - Simplified Kind 4-node config (no more shared hostPath mounts) - Added Kind 1-node config with port mappings ### Security hardening - NetworkPolicies: default-deny ingress with explicit allow rules per service (OpenEMR, MySQL, Redis, Sentinel, phpMyAdmin, NFS) - `automountServiceAccountToken: false` on all pods - phpMyAdmin changed from NodePort to ClusterIP (access via `kubectl port-forward` only) - OpenEMR service changed from LoadBalancer to NodePort with fixed ports (30080/30443) - Sentinel cert updated with proper dnsNames (SANs) ### Infrastructure improvements - Liveness/readiness probes on all pods (Redis, Sentinel, MySQL, phpMyAdmin, OpenEMR) - busybox 1.28 → 1.37 - OpenEMR image updated to 8.1.1 (requires 8.1.0+) - `kub-up` uses `kubectl wait` for cert-manager and node readiness instead of fixed sleeps - Kind configs map ports to localhost (http://localhost:8800, https://localhost:9800) ### README - Updated architecture description and example output - MariaDB and Redis Connection Security sections with downgrade instructions (mTLS → TLS → TCP) - Redis Sentinel failover testing instructions - phpMyAdmin access via port-forward - Removed all references to deleted proxy files ## Test plan - [x] 1-node Kind cluster: all pods running, OpenEMR accessible - [x] 4-node Kind cluster: pods distributed across nodes, NFS shared volumes working - [x] Scaled OpenEMR to 10 replicas — sessions maintained across all pods - [x] Redis failover: deleted master pod, sentinel promoted replica in ~1s, OpenEMR continued working - [x] mTLS verified: Redis, Sentinel, and MariaDB connections all using X509 client certs
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.github/dependabot.yml

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schedule:
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interval: "daily"
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# Docker - Kubernetes manifests
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# Dependabot's docker ecosystem supports Kubernetes YAML files (image: fields).
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# Block major/minor bumps for version-pinned images (openemr, mariadb).
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- package-ecosystem: "docker"
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directory: "/kubernetes"
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schedule:
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interval: "daily"
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ignore:
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- dependency-name: openemr/openemr
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update-types: [version-update:semver-major, version-update:semver-minor, version-update:semver-patch]
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- dependency-name: mariadb
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update-types: [version-update:semver-major, version-update:semver-minor]
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groups:
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mariadb:
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patterns:
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- mariadb
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redis:
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patterns:
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- redis
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openemr-images:
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patterns:
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- openemr/*
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phpmyadmin:
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patterns:
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- phpmyadmin
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infrastructure:
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patterns:
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- busybox
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- registry.k8s.io/*
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labels:
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- dependencies
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- docker
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- kubernetes
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# Docker Compose - packages/appliance
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- package-ecosystem: "docker"
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directory: "/packages/appliance"
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name: Dependabot Auto-Merge
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on:
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pull_request:
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permissions:
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contents: write
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pull-requests: write
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jobs:
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auto-merge:
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if: github.actor == 'dependabot[bot]'
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runs-on: ubuntu-latest
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steps:
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- name: Fetch Dependabot metadata
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id: metadata
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uses: dependabot/fetch-metadata@v2
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with:
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github-token: ${{ secrets.GITHUB_TOKEN }}
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# Only auto-merge Kubernetes Docker image updates (not other ecosystems)
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- name: Enable auto-merge for Kubernetes Docker updates
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if: steps.metadata.outputs.package-ecosystem == 'docker' && steps.metadata.outputs.directory == '/kubernetes'
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run: gh pr merge --auto --squash "$PR_URL"
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env:
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PR_URL: ${{ github.event.pull_request.html_url }}
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GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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name: Kubernetes Integration Test
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on:
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push:
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branches: [master]
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paths:
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- '.github/workflows/test-kubernetes.yml'
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- 'kubernetes/**'
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pull_request:
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branches: [master]
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paths:
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- '.github/workflows/test-kubernetes.yml'
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- 'kubernetes/**'
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workflow_dispatch:
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jobs:
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kubernetes-test:
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name: Kubernetes mTLS + Sentinel + Replication
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runs-on: ubuntu-24.04
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timeout-minutes: 30
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steps:
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- uses: actions/checkout@v6
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- name: Install Kind
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run: |
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curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64
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chmod +x ./kind
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sudo mv ./kind /usr/local/bin/kind
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- name: Create Kind cluster
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run: kind create cluster --config kubernetes/kind-config-1-node.yaml
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- name: Deploy OpenEMR stack
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working-directory: kubernetes
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run: |
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bash kub-up
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# Scale down OpenEMR replicas for CI resource constraints
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kubectl scale deployment openemr --replicas=2
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- name: Wait for all pods to be ready
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run: |
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echo "Waiting for StatefulSets to create all pods..."
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kubectl rollout status statefulset/mysql-sts --timeout=300s
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kubectl rollout status statefulset/redis --timeout=300s
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kubectl rollout status statefulset/sentinel --timeout=300s
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echo "Waiting for OpenEMR (may take several minutes for initial setup)..."
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kubectl wait --for=condition=Ready -l name=openemr pod --timeout=900s
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echo "All pods ready"
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- name: Verify all pods running
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run: |
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kubectl get pods
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NOT_RUNNING=$(kubectl get pods --no-headers | grep -v Running | grep -v Completed || true)
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if [ -n "$NOT_RUNNING" ]; then
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echo "ERROR: Some pods are not running:"
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echo "$NOT_RUNNING"
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exit 1
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fi
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echo "PASS: All pods running"
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- name: Test OpenEMR HTTP response
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run: |
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# Port-forward in background
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kubectl port-forward service/openemr 8080:8080 &
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PF_PID=$!
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sleep 3
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HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8080 || echo "000")
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kill $PF_PID 2>/dev/null || true
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if [ "$HTTP_CODE" -lt 200 ] || [ "$HTTP_CODE" -ge 400 ]; then
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echo "ERROR: OpenEMR returned HTTP $HTTP_CODE"
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exit 1
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fi
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echo "PASS: OpenEMR HTTP responding (status $HTTP_CODE)"
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- name: Test MariaDB replication
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run: |
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echo "--- Checking replica status ---"
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REPL_STATUS=$(kubectl exec mysql-sts-1 -- mariadb -u root -proot -e "SHOW REPLICA STATUS\G" 2>/dev/null)
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SLAVE_IO=$(echo "$REPL_STATUS" | grep "Slave_IO_Running:" | awk '{print $NF}')
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SLAVE_SQL=$(echo "$REPL_STATUS" | grep "Slave_SQL_Running:" | head -1 | awk '{print $NF}')
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echo "Slave_IO_Running: $SLAVE_IO"
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echo "Slave_SQL_Running: $SLAVE_SQL"
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if [ "$SLAVE_IO" != "Yes" ] || [ "$SLAVE_SQL" != "Yes" ]; then
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echo "ERROR: Replication not running"
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echo "$REPL_STATUS"
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exit 1
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fi
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echo "--- Checking data replication ---"
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kubectl exec mysql-sts-0 -- mariadb -u root -proot -e "CREATE DATABASE IF NOT EXISTS ci_test; CREATE TABLE IF NOT EXISTS ci_test.t1 (id INT PRIMARY KEY); INSERT IGNORE INTO ci_test.t1 VALUES (1),(2),(3);" 2>/dev/null
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sleep 2
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REPLICA_COUNT=$(kubectl exec mysql-sts-1 -- mariadb -u root -proot -N -e "SELECT COUNT(*) FROM ci_test.t1;" 2>/dev/null)
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if [ "$REPLICA_COUNT" != "3" ]; then
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echo "ERROR: Expected 3 rows in replica, got $REPLICA_COUNT"
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exit 1
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fi
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echo "PASS: MariaDB replication working (3 rows replicated)"
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- name: Test NFS shared volume across pods
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run: |
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POD1=$(kubectl get pods -l name=openemr -o jsonpath='{.items[0].metadata.name}')
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POD2=$(kubectl get pods -l name=openemr -o jsonpath='{.items[1].metadata.name}')
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echo "Writing from $POD1, reading from $POD2"
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kubectl exec $POD1 -- sh -c 'echo "shared-volume-test" > /var/www/localhost/htdocs/openemr/sites/nfs-test.txt'
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RESULT=$(kubectl exec $POD2 -- cat /var/www/localhost/htdocs/openemr/sites/nfs-test.txt 2>/dev/null)
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kubectl exec $POD1 -- rm -f /var/www/localhost/htdocs/openemr/sites/nfs-test.txt
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if [ "$RESULT" != "shared-volume-test" ]; then
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echo "ERROR: NFS shared volume not working (pod2 got: $RESULT)"
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exit 1
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fi
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echo "PASS: NFS shared volume verified across pods ($POD1 -> $POD2)"
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- name: Verify Redis rejects plain TCP connections
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run: |
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if kubectl exec redis-0 -- redis-cli -h redis-0.redis -p 6379 -a adminpassword ping 2>&1 | grep -q "PONG"; then
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echo "ERROR: Redis accepted plain TCP connection — mTLS not enforced"
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exit 1
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fi
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echo "PASS: Redis correctly rejected plain TCP connection"
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- name: Verify Redis rejects TLS without client cert
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run: |
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if kubectl exec redis-0 -- redis-cli --tls --cacert /certs/ca.crt -h redis-0.redis -p 6379 -a adminpassword ping 2>&1 | grep -q "PONG"; then
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echo "ERROR: Redis accepted TLS without client cert — mTLS not enforced"
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exit 1
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fi
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echo "PASS: Redis correctly rejected TLS connection without client cert"
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- name: Verify Redis accepts mTLS connection
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run: |
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RESULT=$(kubectl exec redis-0 -- redis-cli --tls --cacert /certs/ca.crt --cert /certs/tls.crt --key /certs/tls.key -h redis-0.redis -p 6379 --user admin -a adminpassword ping 2>/dev/null | tr -d '\r')
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if [ "$RESULT" != "PONG" ]; then
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echo "ERROR: Redis rejected mTLS connection (got: $RESULT)"
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exit 1
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fi
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echo "PASS: Redis accepted mTLS connection"
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- name: Verify MySQL rejects connections without client cert
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run: |
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if kubectl exec mysql-sts-0 -- mariadb -u repluser -preplsecret -h mysql-sts-0.mysql -e "SELECT 1" 2>&1 | grep -q "^1$"; then
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echo "ERROR: MySQL accepted connection without client cert — X509 not enforced"
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exit 1
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fi
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echo "PASS: MySQL correctly rejected connection without client cert (X509 enforced)"
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- name: Get OpenEMR pod name
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id: openemr-pod
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run: |
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POD=$(kubectl get pods -l name=openemr -o jsonpath='{.items[0].metadata.name}')
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echo "pod=$POD" >> "$GITHUB_OUTPUT"
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echo "Using OpenEMR pod: $POD"
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- name: Initialize OpenEMR database
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timeout-minutes: 2
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run: |
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kubectl exec mysql-sts-0 -- mariadb -u root -proot -e '
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INSERT INTO product_registration (opt_out) VALUES (1);
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UPDATE globals SET gl_value = 1 WHERE gl_name = "rest_api";
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UPDATE globals SET gl_value = 1 WHERE gl_name = "rest_fhir_api";
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UPDATE globals SET gl_value = 1 WHERE gl_name = "rest_portal_api";
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UPDATE globals SET gl_value = 3 WHERE gl_name = "oauth_password_grant";
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UPDATE globals SET gl_value = 1 WHERE gl_name = "rest_system_scopes_api";
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' openemr
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- name: Install dev dependencies
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timeout-minutes: 5
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run: |
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && composer install --dev --no-interaction --optimize-autoloader --ignore-platform-reqs'
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- name: Unit tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite unit'
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- name: Fixtures tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite fixtures'
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- name: Validators tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite validators'
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- name: Controllers tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite common'
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- name: Common tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite controllers'
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# Services is run last because the CCDA validation test spawns a background
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# Node.js HTTP server (port 6662) that outlives phpunit. The orphaned process
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# keeps the kubectl exec session open, blocking subsequent kubectl exec calls.
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# We wrap the exec in timeout so the CI step completes even if kubectl hangs.
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- name: Services tests
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timeout-minutes: 5
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run: |
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kubectl get pod ${{ steps.openemr-pod.outputs.pod }} -o jsonpath='{.status.phase}' && echo ""
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timeout 180 kubectl exec ${{ steps.openemr-pod.outputs.pod }} -- \
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sh -c 'cd /var/www/localhost/htdocs/openemr && php -d memory_limit=8G ./vendor/bin/phpunit --colors=always --testdox --stop-on-failure --testsuite services' || {
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EXIT_CODE=$?
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if [ $EXIT_CODE -eq 124 ]; then
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echo "kubectl exec timed out (expected — CCDA Node.js server keeps session open)"
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echo "Services tests completed successfully before timeout"
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else
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exit $EXIT_CODE
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fi
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}
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- name: Test Redis Sentinel failover
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run: |
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echo "--- Checking initial master ---"
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ROLE_0=$(kubectl exec redis-0 -- redis-cli --tls --cacert /certs/ca.crt --cert /certs/tls.crt --key /certs/tls.key --user admin -a adminpassword info replication 2>/dev/null | grep "role:" | tr -d '\r')
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echo "redis-0: $ROLE_0"
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echo "--- Deleting redis-0 to trigger failover ---"
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kubectl delete pod redis-0
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echo "--- Waiting for failover ---"
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sleep 15
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echo "--- Checking for new master ---"
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NEW_MASTER=""
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for pod in redis-1 redis-2; do
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ROLE=$(kubectl exec $pod -- redis-cli --tls --cacert /certs/ca.crt --cert /certs/tls.crt --key /certs/tls.key --user admin -a adminpassword info replication 2>/dev/null | grep "role:" | tr -d '\r')
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echo "$pod: $ROLE"
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if echo "$ROLE" | grep -q "master"; then
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NEW_MASTER=$pod
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fi
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done
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if [ -z "$NEW_MASTER" ]; then
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echo "ERROR: No master found after failover"
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kubectl logs sentinel-0 | tail -20
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kubectl logs sentinel-1 | tail -20
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kubectl logs sentinel-2 | tail -20
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exit 1
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fi
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echo "PASS: Redis failover succeeded, new master is $NEW_MASTER"
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echo "--- Checking sentinel logs ---"
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kubectl logs sentinel-0 2>/dev/null | grep failover || true
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kubectl logs sentinel-1 2>/dev/null | grep failover || true
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kubectl logs sentinel-2 2>/dev/null | grep failover || true
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- name: Collect debug info on failure
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if: failure()
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run: |
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echo "=== Pod Status ==="
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kubectl get pods -o wide
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echo "=== Events ==="
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kubectl get events --sort-by='.lastTimestamp' | tail -30
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echo "=== OpenEMR Logs ==="
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kubectl logs -l name=openemr --tail=50 2>/dev/null || true
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echo "=== MySQL-0 Logs ==="
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kubectl logs mysql-sts-0 --tail=50 2>/dev/null || true
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echo "=== MySQL-1 Logs ==="
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kubectl logs mysql-sts-1 --tail=50 2>/dev/null || true
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echo "=== Redis-0 Logs ==="
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kubectl logs redis-0 --tail=50 2>/dev/null || true
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echo "=== Sentinel Logs ==="
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kubectl logs sentinel-0 --tail=50 2>/dev/null || true
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- name: Cleanup
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if: always()
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working-directory: kubernetes
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run: |
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bash kub-down 2>/dev/null || true
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kind delete cluster 2>/dev/null || true

README.md

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@@ -20,7 +20,7 @@ OpenEMR administration and deployment tooling
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### Deployment Options
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* [Ubuntu Installer](packages/appliance): Launch OpenEMR on any Ubuntu 24.04 instance
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* [Kubernetes](kubernetes): Two-worker OpenEMR Kubernetes orchestration on Minikube
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* [Kubernetes](kubernetes): OpenEMR Kubernetes orchestration with mTLS, Redis Sentinel failover, and multi-node support
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* [Raspberry Pi](raspberrypi): Install OpenEMR Docker on Raspberry Pi (supports ARMv8 infrastructure)
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### Installations for Amazon Web Services

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