Add ssm-agent installer daemonset

Author: iankouls-aws

Container-Root/eks/deployment/ssm-agent/deploy.sh

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+#!/bin/bash
+
+echo ""
+echo "Deploying SSM Agent daemonset ..."
+
+kubectl apply -f ./ssm-daemonset.yaml
+
+

Container-Root/eks/deployment/ssm-agent/remove.sh

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+#!/bin/bash
+
+echo ""
+echo "Removing SSM Agent daemonset ..."
+echo "SSM Agent will not be installed on new nodes, it will continue to run on existing nodes"
+
+kubectl delete -f ./ssm-daemonset.yaml
+

Container-Root/eks/deployment/ssm-agent/ssm-daemonset.yaml

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+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    k8s-app: ssm-installer
+  name: ssm-installer
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      k8s-app: ssm-installer
+  template:
+    metadata:
+      labels:
+        k8s-app: ssm-installer
+    spec:
+      containers:
+      - name: sleeper
+        image: busybox
+        command: ['sh', '-c', 'echo I keep things running! && sleep 3600']
+      initContainers:
+      - image: amazonlinux
+        imagePullPolicy: Always
+        name: ssm
+        command: ["/bin/bash"]
+        args: ["-c","echo '* * * * * root yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm & rm -rf /etc/cron.d/ssmstart' > /etc/cron.d/ssmstart"]
+        securityContext:
+          allowPrivilegeEscalation: true
+        volumeMounts:
+        - mountPath: /etc/cron.d
+          name: cronfile
+        terminationMessagePath: /dev/termination-log
+        terminationMessagePolicy: File
+      volumes:
+      - name: cronfile
+        hostPath:
+          path: /etc/cron.d
+          type: Directory
+      dnsPolicy: ClusterFirst
+      restartPolicy: Always
+      schedulerName: default-scheduler
+      terminationGracePeriodSeconds: 30