---
title: Install calico/node
redirect_from: latest/getting-started/kubernetes/hardway/install-node
canonical_url: 'https://docs.projectcalico.org/v3.9/getting-started/kubernetes/hardway/install-node'
---

`calico/node` runs three daemons

- Felix, the {{site.prodname}} per-node daemon
- BIRD, a daemon that speaks the BGP protocol to distribute routing information to other nodes
- confd, a daemon that watches the {{site.prodname}} datastore for config changes and updates BIRD's config files

In this lab we configure and install `calico/node` as a daemon set.

## Provision Certificates

Create the key `calico/node` will use to authenticate with Typha and the certificate signing request (CSR)
```
openssl req -newkey rsa:4096 \
           -keyout calico-node.key \
           -nodes \
           -out calico-node.csr \
           -subj "/CN=calico-node"
```

The certificate presents the Common Name (CN) as `calico-node`, which is what we configured Typha to accept
in the last lab.

Sign the Felix certificate with the CA we created earlier
```
openssl x509 -req -in calico-node.csr \
                  -CA typhaca.crt \
                  -CAkey typhaca.key \
                  -CAcreateserial \
                  -out calico-node.crt \
                  -days 365
```

Store the key and certificate in a Secret that `calico/node` will access

```
kubectl create secret generic -n kube-system calico-node-certs --from-file=calico-node.key --from-file=calico-node.crt
```

## Provision RBAC

Create the ServiceAccount that `calico/node` will run as

```
kubectl create serviceaccount -n kube-system calico-node
```

Provision a cluster role with permissions to read and modify {{site.prodname}} datastore objects

```
kubectl apply -f - <<EOF
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: calico-node
rules:
  - apiGroups: [""]
    resources:
      - endpoints
      - services
    verbs:
      # Used to discover service IPs for advertisement.
      - watch
      - list
      # Used to discover Typhas.
      - get
  - apiGroups: [""]
    resources:
      - nodes/status
    verbs:
      # Needed for clearing NodeNetworkUnavailable flag.
      - patch
      # Calico stores some configuration information in node annotations.
      - update
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - globalfelixconfigs
      - felixconfigurations
      - bgppeers
      - globalbgpconfigs
      - bgpconfigurations
      - ippools
      - ipamblocks
      - globalnetworkpolicies
      - globalnetworksets
      - networkpolicies
      - clusterinformations
      - hostendpoints
      - blockaffinities
      - networksets
    verbs:
      - get
      - list
      - watch
  # Calico must create and update some CRDs on startup.
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - ippools
      - felixconfigurations
      - clusterinformations
    verbs:
      - create
      - update
  # Calico stores some configuration information on the node.
  - apiGroups: [""]
    resources:
      - nodes
    verbs:
      - get
      - list
      - watch
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - ipamconfigs
    verbs:
      - get
  # Block affinities must also be watchable by confd for route aggregation.
  - apiGroups: ["crd.projectcalico.org"]
    resources:
      - blockaffinities
    verbs:
      - watch
EOF
```

Bind the cluster role to the `calico-node` ServiceAccount

```
kubectl create clusterrolebinding calico-node --clusterrole=calico-node --serviceaccount=kube-system:calico-node
```

## Install daemon set

`calico/node` runs as a daemon set so that it is installed on every node in the cluster.

Create the daemon set

```
kubectl apply -f - <<EOF
kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: calico-node
  namespace: kube-system
  labels:
    k8s-app: calico-node
spec:
  selector:
    matchLabels:
      k8s-app: calico-node
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  template:
    metadata:
      labels:
        k8s-app: calico-node
      annotations:
        # This, along with the CriticalAddonsOnly toleration below,
        # marks the pod as a critical add-on, ensuring it gets
        # priority scheduling and that its resources are reserved
        # if it ever gets evicted.
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      nodeSelector:
        beta.kubernetes.io/os: linux
      hostNetwork: true
      tolerations:
        # Make sure calico-node gets scheduled on all nodes.
        - effect: NoSchedule
          operator: Exists
        # Mark the pod as a critical add-on for rescheduling.
        - key: CriticalAddonsOnly
          operator: Exists
        - effect: NoExecute
          operator: Exists
      serviceAccountName: calico-node
      # Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
      # deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
      terminationGracePeriodSeconds: 0
      priorityClassName: system-node-critical
      containers:
        # Runs calico-node container on each Kubernetes node.  This
        # container programs network policy and routes on each
        # host.
        - name: calico-node
          image: calico/node:v3.8.0
          env:
            # Use Kubernetes API as the backing datastore.
            - name: DATASTORE_TYPE
              value: "kubernetes"
            - name: FELIX_TYPHAK8SSERVICENAME
              value: calico-typha
            # Wait for the datastore.
            - name: WAIT_FOR_DATASTORE
              value: "true"
            # Set based on the k8s node name.
            - name: NODENAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            # Choose the backend to use.
            - name: CALICO_NETWORKING_BACKEND
              value: bird
            # Cluster type to identify the deployment type
            - name: CLUSTER_TYPE
              value: "k8s,bgp"
            # Auto-detect the BGP IP address.
            - name: IP
              value: "autodetect"
            # Disable file logging so kubectl logs works.
            - name: CALICO_DISABLE_FILE_LOGGING
              value: "true"
            # Set Felix endpoint to host default action to ACCEPT.
            - name: FELIX_DEFAULTENDPOINTTOHOSTACTION
              value: "ACCEPT"
            # Disable IPv6 on Kubernetes.
            - name: FELIX_IPV6SUPPORT
              value: "false"
            # Set Felix logging to "info"
            - name: FELIX_LOGSEVERITYSCREEN
              value: "info"
            - name: FELIX_HEALTHENABLED
              value: "true"
            # Location of the CA bundle Felix uses to authenticate Typha; volume mount
            - name: FELIX_TYPHACAFILE
              value: /calico-typha-ca/typhaca.crt
            # Common name on the Typha certificate; used to verify we are talking to an authentic typha
            - name: FELIX_TYPHACN
              value: calico-typha
            # Location of the client certificate for connecting to Typha; volume mount
            - name: FELIX_TYPHACERTFILE
              value: /calico-node-certs/calico-node.crt
            # Location of the client certificate key for connecting to Typha; volume mount
            - name: FELIX_TYPHAKEYFILE
              value: /calico-node-certs/calico-node.key
          securityContext:
            privileged: true
          resources:
            requests:
              cpu: 250m
          livenessProbe:
            httpGet:
              path: /liveness
              port: 9099
              host: localhost
            periodSeconds: 10
            initialDelaySeconds: 10
            failureThreshold: 6
          readinessProbe:
            exec:
              command:
              - /bin/calico-node
              - -bird-ready
              - -felix-ready
            periodSeconds: 10
          volumeMounts:
            - mountPath: /lib/modules
              name: lib-modules
              readOnly: true
            - mountPath: /run/xtables.lock
              name: xtables-lock
              readOnly: false
            - mountPath: /var/run/calico
              name: var-run-calico
              readOnly: false
            - mountPath: /var/lib/calico
              name: var-lib-calico
              readOnly: false
            - mountPath: /var/run/nodeagent
              name: policysync
            - mountPath: "/calico-typha-ca"
              name: calico-typha-ca
              readOnly: true
            - mountPath: /calico-node-certs
              name: calico-node-certs
              readOnly: true
      volumes:
        # Used by calico-node.
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: var-run-calico
          hostPath:
            path: /var/run/calico
        - name: var-lib-calico
          hostPath:
            path: /var/lib/calico
        - name: xtables-lock
          hostPath:
            path: /run/xtables.lock
            type: FileOrCreate
        # Used to create per-pod Unix Domain Sockets
        - name: policysync
          hostPath:
            type: DirectoryOrCreate
            path: /var/run/nodeagent
        - name: calico-typha-ca
          configMap:
            name: calico-typha-ca
        - name: calico-node-certs
          secret:
            secretName: calico-node-certs
EOF
```

Verify that `calico/node` is running on each node in your cluster, and goes to `Running` within a few minutes.

```
kubectl get pod -l k8s-app=calico-node -n kube-system
```

Result

```
NAME                READY   STATUS    RESTARTS   AGE
calico-node-99ksc   1/1     Running   0          9m51s
calico-node-cbgxr   1/1     Running   0          9m21s
calico-node-j456w   1/1     Running   0          9m42s
calico-node-rflbk   1/1     Running   0          9m32s
calico-node-xlpkh   1/1     Running   0          9m12s
```
{: .no-select-button}

## Next

[Configure BGP peering](./configure-bgp-peering)

