deytenit
9e129ccfb8
### Summary of Changes - **Legacy Cleanup**: - Deleted `ci/deploy/` (`docker-compose.yml`, `.env.template`, `nginx/`) - Deleted `ci/scripts/deploy-certbot.sh` - Deleted `ci/scripts/deploy-new-tags.sh` - **Cloud-Init Template Updates**: - Replaced username `debian` with `adam` - Removed deprecated `disable: - servicelb` - Cleaned up heredoc YAML formatting
221 lines
7.7 KiB
YAML
221 lines
7.7 KiB
YAML
#cloud-config
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# ==============================================================================
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# Cloud-Init User-Data Template for K3s Single-Node Cluster (com-ermnvldmr)
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#
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# Usage:
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# 1. Copy this template to user-data.yaml:
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# cp ci/cloud-init/user-data.template.yaml ci/cloud-init/user-data.yaml
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# 2. Replace the stubs below (SSH authorized key & Age private key).
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# 3. Pass user-data.yaml during VM creation in Yandex Cloud / Cloud Provider.
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# Note: user-data.yaml is ignored by git to protect private keys.
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# ==============================================================================
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preserve_hostname: false
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hostname: com-ermnvldmr
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ssh_pwauth: false
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# ------------------------------------------------------------------------------
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# 1. User & SSH Key Configuration (Replace stub with your public SSH key)
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# ------------------------------------------------------------------------------
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users:
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- name: adam
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sudo: ALL=(ALL) NOPASSWD:ALL
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shell: /bin/bash
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ssh_authorized_keys:
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- "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPLACEHOLDERFORYOURPUBLICSSHKEY user@hostname"
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write_files:
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# ----------------------------------------------------------------------------
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# 2. SOPS / Age Decryption Key (Replace stub with your private AGE key)
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# ----------------------------------------------------------------------------
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- path: /root/.config/sops/age/keys.txt
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owner: root:root
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permissions: '0600'
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content: |
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# public key: age1jpa7hqyzzdfq7lvnw3l8qy6648mtjgpcqnljl5jz92dcqjrnsqfsn7m0fl
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AGE-SECRET-KEY-1PLACEHOLDERFORYOURPRIVATEAGEKEY
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# ----------------------------------------------------------------------------
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# 3. Security Hardening Configuration
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# ----------------------------------------------------------------------------
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- path: /etc/ssh/sshd_config.d/99-security-hardening.conf
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owner: root:root
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permissions: '0600'
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content: |
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PasswordAuthentication no
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PermitRootLogin prohibit-password
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KbdInteractiveAuthentication no
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X11Forwarding no
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MaxAuthTries 3
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ClientAliveInterval 300
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ClientAliveCountMax 2
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- path: /etc/sysctl.d/99-k3s-hardening.conf
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owner: root:root
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permissions: '0644'
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content: |
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# Network SYN Flood Protection
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net.ipv4.tcp_syncookies = 1
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# Disable ICMP redirects
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net.ipv4.conf.all.accept_redirects = 0
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net.ipv4.conf.default.accept_redirects = 0
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net.ipv4.conf.all.send_redirects = 0
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net.ipv4.conf.default.send_redirects = 0
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# Disable Source Routing
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net.ipv4.conf.all.accept_source_route = 0
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net.ipv4.conf.default.accept_source_route = 0
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# Anti-spoofing (Reverse Path Filtering)
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net.ipv4.conf.all.rp_filter = 1
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net.ipv4.conf.default.rp_filter = 1
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# Required for K8s pod networking
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net.ipv4.ip_forward = 1
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# System Hardening
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kernel.kptr_restrict = 2
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fs.protected_hardlinks = 1
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fs.protected_symlinks = 1
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fs.inotify.max_user_watches = 524288
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fs.inotify.max_user_instances = 512
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- path: /etc/rancher/k3s/config.yaml
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owner: root:root
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permissions: '0600'
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content: |
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write-kubeconfig-mode: "0644"
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# ----------------------------------------------------------------------------
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# 4. Bootstrap Cluster Script
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# ----------------------------------------------------------------------------
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- path: /usr/local/bin/bootstrap-cluster.sh
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owner: root:root
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permissions: '0755'
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content: |
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#!/usr/bin/env bash
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set -euo pipefail
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echo "=== [Bootstrap] Ensuring Reliable DNS Resolution ==="
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if ! grep -q "nameserver" /etc/resolv.conf 2>/dev/null; then
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cat << 'EOF_DNS' > /etc/resolv.conf
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nameserver 1.1.1.1
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nameserver 8.8.8.8
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nameserver 77.88.8.8
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EOF_DNS
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fi
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echo "=== [Bootstrap] Applying Sysctl Hardening ==="
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sysctl --system
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echo "=== [Bootstrap] Ensuring SSH Host Keys & Starting SSH ==="
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ssh-keygen -A
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systemctl restart ssh || systemctl restart sshd || true
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echo "=== [Bootstrap] Configuring UFW Firewall ==="
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ufw default deny incoming
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ufw default allow outgoing
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ufw default allow routed
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ufw allow 22/tcp comment 'SSH'
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ufw allow 80/tcp comment 'HTTP Traefik'
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ufw allow 443/tcp comment 'HTTPS Traefik'
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# Allow Kubernetes Pod & Service traffic
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ufw allow in on cni0 || true
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ufw allow in on flannel.1 || true
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ufw allow from 10.42.0.0/16 comment 'K3s Pod CIDR'
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ufw allow from 10.43.0.0/16 comment 'K3s Service CIDR'
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ufw --force enable
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echo "=== [Bootstrap] Enabling Fail2ban ==="
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systemctl enable --now fail2ban || true
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echo "=== [Bootstrap] Checking for Secondary Persistent Data Disk ==="
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if [ -b /dev/vdb ]; then
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echo "Secondary disk /dev/vdb detected."
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if ! blkid /dev/vdb >/dev/null 2>&1; then
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echo "Formatting /dev/vdb with ext4 filesystem..."
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mkfs.ext4 -F -L k3s-storage /dev/vdb
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fi
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mkdir -p /var/lib/rancher/k3s/storage
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if ! grep -qs '/var/lib/rancher/k3s/storage' /proc/mounts; then
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mount /dev/vdb /var/lib/rancher/k3s/storage
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echo "LABEL=k3s-storage /var/lib/rancher/k3s/storage ext4 defaults,noatime 0 2" >> /etc/fstab
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echo "Mounted /dev/vdb to /var/lib/rancher/k3s/storage."
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fi
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fi
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echo "=== [Bootstrap] Starting K3s Service ==="
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systemctl enable --now k3s.service
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echo "=== [Bootstrap] Waiting for K3s API server ready ==="
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export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
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until kubectl get nodes >/dev/null 2>&1; do
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echo "Waiting for Kubernetes API..."
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sleep 3
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done
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echo "=== [Bootstrap] Cluster node is online ==="
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kubectl get nodes
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echo "=== [Bootstrap] Creating flux-system namespace ==="
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kubectl create namespace flux-system --dry-run=client -o yaml | kubectl apply -f -
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echo "=== [Bootstrap] Injecting SOPS age decryption key ==="
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if [ -f /root/.config/sops/age/keys.txt ]; then
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kubectl create secret generic sops-age \
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--namespace=flux-system \
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--from-file=age.agekey=/root/.config/sops/age/keys.txt \
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--dry-run=client -o yaml | kubectl apply -f -
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echo "sops-age secret created."
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else
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echo "WARNING: /root/.config/sops/age/keys.txt not found. Inject key manually via kubectl."
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fi
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echo "=== [Bootstrap] Installing Flux Operator / Custom Resources ==="
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kubectl apply -f https://github.com/fluxcd/flux2/releases/download/v2.4.0/install.yaml
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echo "=== [Bootstrap] Setting up Kubectl access for non-root users ==="
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for home_dir in /home/*; do
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if [ -d "$home_dir" ]; then
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user_name=$(basename "$home_dir")
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mkdir -p "$home_dir/.kube"
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cp /etc/rancher/k3s/k3s.yaml "$home_dir/.kube/config"
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chown -R "$user_name:$user_name" "$home_dir/.kube"
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chmod 600 "$home_dir/.kube/config"
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fi
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done
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echo "=== [Bootstrap] Applying initial GitOps root sync ==="
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kubectl apply -f - << 'EOF_GITOPS'
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apiVersion: source.toolkit.fluxcd.io/v1
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kind: GitRepository
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metadata:
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name: ermnvldmr-repo
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namespace: flux-system
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spec:
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interval: 1m
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url: https://github.com/deytenit/ermnvldmr.com.git
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ref:
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branch: next
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---
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apiVersion: kustomize.toolkit.fluxcd.io/v1
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kind: Kustomization
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metadata:
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name: cluster-sync
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namespace: flux-system
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spec:
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interval: 5m
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sourceRef:
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kind: GitRepository
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name: ermnvldmr-repo
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path: ./ci/k8s/clusters/production
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prune: true
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wait: true
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timeout: 2m
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decryption:
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provider: sops
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secretRef:
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name: sops-age
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EOF_GITOPS
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echo "=== [Bootstrap] First-Boot Bootstrap Sequence Complete ==="
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runcmd:
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- /usr/local/bin/bootstrap-cluster.sh
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