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SeaweedFS (Bootstrap) Installation

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SeaweedFS (Bootstrap) is the minimal instance required to break the circular dependency between storage and the database. It provides the initial S3 endpoint for CloudnativePG.

Installation

Section titled “Installation”

  1. Connect to 🟢 Management Kubernetes Cluster ; _i.e w/ Kubeconfig File.

    Set Kubeconfig File

    Ensure you have defined and loaded your Global Shell Variables as described in Shell Variables.

    Terminal window
    source $BASE_WORKING_DIR/shell-values/kubernetes/management_cluster.vars.sh

  2. Prepare Required Shell Variables

    Ensure K8S_INGRESS_TLS_CERTIFICATE_SECRET_NAME and K8S_STORAGE_CLASS_NAME are defined as per the Shell Variables guide. Other credentials and domain names are loaded from your tools/*.vars.sh files.

  3. Create Namespace for SeaweedFS Bootstrap

    Terminal window
    kubectl create namespace seaweedfs-bootstrap

  4. Create SeaweedFS S3 Configuration

    Terminal window
    cat <<EOF > $BASE_WORKING_DIR/kubernetes-manifests/seaweedfs-bootstrap-s3.yaml
    ---
    # S3 Credentials for SeaweedFS (Minimal/Bootstrap)
    apiVersion: v1
    kind: Secret
    type: Opaque
    metadata:
      name: seaweedfs-s3-secret
      namespace: seaweedfs-bootstrap
    stringData:
      # ----------------------------------------------------------------------------
      # INPUT CONFIGURATION (YAML)
      # Run 'scripts/seaweedfs-utils.sh update <this_file>' to generate the JSON below.
      # ----------------------------------------------------------------------------
      s3_config_input: |
        users:
          - name: admin
            password: "${SEAWEEDFS_BOOTSTRAP_S3_ADMIN_PASSWORD}"
            actions:
              - Admin
              - Read
              - Write
              - List
              - Tagging
          - name: postgres-backup
            password: "${SEAWEEDFS_BOOTSTRAP_S3_POSTGRES_BACKUP_PASSWORD}"
            actions:
              - "Read:postgres-backups"
              - "Write:postgres-backups"
              - "List:postgres-backups"
              - "Tagging:postgres-backups"
      # ----------------------------------------------------------------------------
      # GENERATED CONFIGURATION (JSON) - DO NOT EDIT MANUALLY
      # ----------------------------------------------------------------------------
      seaweedfs_s3_config: ""
    EOF
    Terminal window
    # Generate proper JSON formatted config into the configuration file
    $BASE_WORKING_DIR/assets/scripts/seaweedfs-utils.sh update $BASE_WORKING_DIR/kubernetes-manifests/seaweedfs-bootstrap-s3.yaml

    Apply the configuration:

    Terminal window
    kubectl apply -f $BASE_WORKING_DIR/kubernetes-manifests/seaweedfs-bootstrap-s3.yaml

  5. Add SeaweedFS Helm Repository

    Terminal window
    helm repo add seaweedfs https://seaweedfs.github.io/seaweedfs/helm
    helm repo update

  6. Create SeaweedFS Bootstrap Helm Values

    Terminal window
    cat <<EOF > $BASE_WORKING_DIR/helm-values/seaweedfs-bootstrap-values.yaml
    global:
      imageName: chrislusf/seaweedfs
      loggingLevel: 1
      enableSecurity: false
      # Disable global replication (Relies on Longhorn)
      enableReplication: false
      # "000" = No replication at SeaweedFS level
      replicationPlacement: "000"
    

    master:
      enabled: true
      replicas: 1
      # Default volume size is 1GB (1000MB) in this chart, fitting ~10 volumes in 10Gi
      volumeSizeLimitMB: 1000
    

      # Security Context
      podSecurityContext:
        enabled: true
        fsGroup: 1000
        fsGroupChangePolicy: "OnRootMismatch"
    

      containerSecurityContext:
        enabled: true
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        privileged: false
        allowPrivilegeEscalation: false
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop: ["ALL"]
    

      # Persistence for Master (Metadata/Sequence)
      data:
        type: "persistentVolumeClaim"
        size: "1Gi"
        storageClass: "${K8S_STORAGECLASS_NAME}"
      logs:
        type: "stdout/stderr"
    

    volume:
      enabled: true
      replicas: 1
    

      ipBind: "0.0.0.0"
      minFreeSpacePercent: 5
    

      # Security Context
      podSecurityContext:
        enabled: true
        fsGroup: 1000
        fsGroupChangePolicy: "OnRootMismatch"
    

      containerSecurityContext:
        enabled: true
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        privileged: false
        allowPrivilegeEscalation: false
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop: ["ALL"]
    

      # Persistence for Volume (Data)
      dataDirs:
        - name: data
          type: "persistentVolumeClaim"
          size: "10Gi"
          storageClass: "${K8S_STORAGECLASS_NAME}"
          maxVolumes: 10
    

      extraArgs: []
    

    filer:
      enabled: true
      replicas: 1
      port: 9001 # MinIO Console compatibility
    

      # Security Context
      podSecurityContext:
        enabled: true
        fsGroup: 1000
        fsGroupChangePolicy: "OnRootMismatch"
    

      containerSecurityContext:
        enabled: true
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        privileged: false
        allowPrivilegeEscalation: false
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop: ["ALL"]
    

      # Persistence for Filer (Metadata)
      data:
        type: "persistentVolumeClaim"
        size: "1Gi"
        storageClass: "${K8S_STORAGECLASS_NAME}"
      logs:
        type: "stdout/stderr"
    

      # Ingress for Filer (SeaweedFS WebUI)
      ingress:
        enabled: false
        className: nginx
        host: "${SEAWEEDFS_BOOTSTRAP_FILER_DOMAIN}"
        path: "/"
        pathType: Prefix
        annotations:
          nginx.ingress.kubernetes.io/proxy-body-size: "0"
          ingress.kubernetes.io/proxy-body-size: "0"
          # Basic Auth Configuration
          # nginx.ingress.kubernetes.io/auth-type: basic
          # nginx.ingress.kubernetes.io/auth-secret: seaweedfs-filer-basic-auth
          # nginx.ingress.kubernetes.io/auth-realm: "Authentication Required"
        tls:
          - secretName: "${K8S_INGRESS_TLS_CERTIFICATE_SECRET_NAME}"
            hosts:
              - "${SEAWEEDFS_BOOTSTRAP_FILER_DOMAIN}"
    

    s3:
      enabled: true
      replicas: 1
      port: 9000 # MinIO API compatibility
      enableAuth: true
      existingConfigSecret: seaweedfs-s3-secret
    

      # Security Context
      podSecurityContext:
        enabled: true
        fsGroup: 1000
        fsGroupChangePolicy: "OnRootMismatch"
    

      containerSecurityContext:
        enabled: true
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        privileged: false
        allowPrivilegeEscalation: false
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop: ["ALL"]
    

      logs:
        type: "stdout/stderr"
    

      # Ingress for S3 API
      ingress:
        enabled: true
        className: nginx
        host: "${SEAWEEDFS_BOOTSTRAP_API_DOMAIN}"
        path: "/"
        pathType: Prefix
        annotations:
          nginx.ingress.kubernetes.io/proxy-body-size: "0"
          ingress.kubernetes.io/proxy-body-size: "0"
        tls:
          - secretName: "${K8S_INGRESS_TLS_CERTIFICATE_SECRET_NAME}"
            hosts:
              - "${SEAWEEDFS_BOOTSTRAP_API_DOMAIN}"
    

    admin:
      enabled: true
      secret:
        adminUser: "admin"
        adminPassword: "${SEAWEEDFS_BOOTSTRAP_ADMIN_PASSWORD}"
    

      ingress:
        enabled: true
        className: nginx
        host: "${SEAWEEDFS_BOOTSTRAP_ADMIN_DOMAIN}"
        path: "/"
        pathType: Prefix
        tls:
          - secretName: "${K8S_INGRESS_TLS_CERTIFICATE_SECRET_NAME}"
            hosts:
              - "${SEAWEEDFS_BOOTSTRAP_ADMIN_DOMAIN}"
    

      # Security Context
      podSecurityContext:
        enabled: true
        fsGroup: 1000
        fsGroupChangePolicy: "OnRootMismatch"
    

      containerSecurityContext:
        enabled: true
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        privileged: false
        allowPrivilegeEscalation: false
        seccompProfile:
          type: RuntimeDefault
        capabilities:
          drop: ["ALL"]
    

    EOF

  7. Install SeaweedFS Bootstrap Helm Release

    Terminal window
    helm upgrade --install seaweedfs-bootstrap seaweedfs/seaweedfs \
        --version 4.0.407 \
        --namespace seaweedfs-bootstrap \
        -f $BASE_WORKING_DIR/helm-values/seaweedfs-bootstrap-values.yaml

  8. Provision SeaweedFS Buckets

    Terminal window
    cat <<EOF > $BASE_WORKING_DIR/kubernetes-manifests/seaweedfs-bootstrap-job-provisioning.yaml
    apiVersion: batch/v1
    kind: Job
    metadata:
      name: seaweedfs-bootstrap-provisioning
      namespace: seaweedfs-bootstrap
      labels:
        app.kubernetes.io/name: seaweedfs-bootstrap
        app.kubernetes.io/component: provisioning
    spec:
      ttlSecondsAfterFinished: 300
      template:
        metadata:
          labels:
            app.kubernetes.io/name: seaweedfs-bootstrap
            app.kubernetes.io/component: provisioning
        spec:
          restartPolicy: OnFailure
    

          # Security Context
          securityContext:
            runAsNonRoot: true
            runAsUser: 10000
            fsGroup: 10000
            seccompProfile:
              type: RuntimeDefault
    

          containers:
            - name: provisioner
              image: chrislusf/seaweedfs:4.07
    

              # Security Context
              securityContext:
                allowPrivilegeEscalation: false
                readOnlyRootFilesystem: false
                runAsNonRoot: true
                runAsUser: 10000
                capabilities:
                  drop: ["ALL"]
    

              # Resource Limits
              resources:
                requests:
                  memory: "64Mi"
                  cpu: "100m"
                limits:
                  memory: "128Mi"
                  cpu: "200m"
    

              env:
                # Target SeaweedFS Master (Minimal/Bootstrap instance)
                - name: WEED_MASTER
                  value: "seaweedfs-master:9333"
    

                # Target SeaweedFS Filer (Minimal/Bootstrap instance)
                - name: WEED_FILER
                  value: "seaweedfs-filer:9001"
    

                # Comma-separated list of buckets to create
                - name: SEAWEEDFS_BUCKETS
                  value: "postgres-backups"
    

              command:
                - "/bin/sh"
                - "-c"
                - |
                  set -e
    

                  echo "[INFO] Starting SeaweedFS Bootstrap Provisioning..."
                  echo "[INFO] Target Master: \$WEED_MASTER"
                  echo "[INFO] Target Filer:  \$WEED_FILER"
                  echo "[INFO] Buckets:       \$SEAWEEDFS_BUCKETS"
    

                  # 1. Wait for Master Leader
                  echo "[INFO] Waiting for SeaweedFS Master Leader..."
                  START_TIME=\$(date +%s)
                  TIMEOUT=300
    

                  until echo cluster.ps | weed shell -master=\$WEED_MASTER > /dev/null 2>&1; do
                    CURRENT_TIME=\$(date +%s)
                    ELAPSED_TIME=\$((\$CURRENT_TIME - \$START_TIME))
    

                    if [ \$ELAPSED_TIME -gt \$TIMEOUT ]; then
                      echo "[ERROR] Timeout waiting for SeaweedFS Master at \$WEED_MASTER"
                      exit 1
                    fi
    

                    echo "[WAIT] Connecting to master... (\${ELAPSED_TIME}s)"
                    sleep 5
                  done
                  echo "[INFO] Connected to Master."
    

                  # 2. Wait for Filer (required for bucket creation)
                  echo "[INFO] Waiting for SeaweedFS Filer..."
    

                  until echo fs.ls / | weed shell -master=\$WEED_MASTER -filer=\$WEED_FILER > /dev/null 2>&1; do
                    CURRENT_TIME=\$(date +%s)
                    ELAPSED_TIME=\$((\$CURRENT_TIME - \$START_TIME))
    

                    if [ \$ELAPSED_TIME -gt \$TIMEOUT ]; then
                      echo "[ERROR] Timeout waiting for SeaweedFS Filer at \$WEED_FILER"
                      exit 1
                    fi
    

                    echo "[WAIT] Connecting to filer... (\${ELAPSED_TIME}s)"
                    sleep 5
                  done
                  echo "[INFO] Connected to Filer."
    

                  # 3. Create Buckets
                  # Generate weed shell script
                  SCRIPT_FILE="/tmp/provision.weed"
                  echo "# Auto-generated provisioning script" > \$SCRIPT_FILE
    

                  # POSIX compliant way to split comma-separated string
                  echo "\$SEAWEEDFS_BUCKETS" | tr ',' '\n' | while read -r bucket; do
                    # Trim whitespace
                    bucket=\$(echo "\$bucket" | sed 's/^[[:space:]]*//;s/[[:space:]]*\$//')
                    if [ -n "\$bucket" ]; then
                       echo "s3.bucket.create -name \$bucket" >> \$SCRIPT_FILE
                       echo "[INFO] Added bucket creation command for: \$bucket"
                    fi
                  done
    

                  echo "s3.bucket.list" >> \$SCRIPT_FILE
    

                  # Execute
                  echo "[INFO] Executing provisioning commands:"
                  cat \$SCRIPT_FILE
                  echo "----------------------------------------"
    

                  # Run weed shell with better error handling
                  OUTPUT_FILE="/tmp/output.log"
                  if ! cat \$SCRIPT_FILE | weed shell -master=\$WEED_MASTER -filer=\$WEED_FILER 2>&1 | tee \$OUTPUT_FILE; then
                    # Check if error is just "bucket already exists"
                    if grep -qi "already exist\|AlreadyExists" \$OUTPUT_FILE; then
                      echo "[WARN] Some buckets already exist (expected, continuing...)"
                    else
                      echo "[ERROR] Bucket creation failed with unexpected error:"
                      cat \$OUTPUT_FILE
                      exit 1
                    fi
                  fi
    

                  echo "[INFO] Bucket creation completed."
    

                  # 4. Verify bucket creation
                  echo "[INFO] Verifying bucket creation..."
                  BUCKET_LIST=\$(echo s3.bucket.list | weed shell -master=\$WEED_MASTER -filer=\$WEED_FILER 2>&1)
    

                  echo "\$SEAWEEDFS_BUCKETS" | tr ',' '\n' | while read -r bucket; do
                    bucket=\$(echo "\$bucket" | sed 's/^[[:space:]]*//;s/[[:space:]]*\$//')
                    if [ -n "\$bucket" ]; then
                      if echo "\$BUCKET_LIST" | grep -q "\$bucket"; then
                        echo "[SUCCESS] Bucket '\$bucket' exists"
                      else
                        echo "[ERROR] Bucket '\$bucket' NOT found!"
                        echo "[DEBUG] Available buckets:"
                        echo "\$BUCKET_LIST"
                        exit 1
                      fi
                    fi
                  done
    

                  echo "[SUCCESS] All buckets verified successfully!"
    

    EOF

    Apply the provisioning job:

    Terminal window
    kubectl apply -f $BASE_WORKING_DIR/kubernetes-manifests/seaweedfs-bootstrap-job-provisioning.yaml

Post-Installation

Section titled “Post-Installation”

  1. Verify Pod Status

    Terminal window
    kubectl get pods -n seaweedfs-bootstrap

    💡 All components should be Running:

    NAME                               READY   STATUS    RESTARTS   AGE
    seaweedfs-admin-0                  1/1     Running   0          ...
    seaweedfs-filer-0                  1/1     Running   0          ...
    seaweedfs-master-0                 1/1     Running   0          ...
    seaweedfs-s3-XXXXXXXXXX-YYYYY      1/1     Running   0          ...
    seaweedfs-volume-0                 1/1     Running   0          ...
    seaweedfs-bootstrap-provisioning   0/1     Completed 0          ...

  2. Verify Admin UI and Buckets

    • Access the SeaweedFS Bootstrap Admin UI at https://${SEAWEEDFS_BOOTSTRAP_ADMIN_DOMAIN}.
    • Login with the admin credentials defined in ${SEAWEEDFS_BOOTSTRAP_ADMIN_PASSWORD}.
    • Navigate to the Buckets tab and confirm that the postgres-backups bucket has been successfully created.

Finished?

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