Volume Backup

ENV

export EKS_CLUSTER_NAME=<CLUSTER_NAME>
export EKS_NODE_GROUP_NAME=<NODE_GROUP_NAME>
export AWS_REGION=ap-northeast-2
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Create EBS Volume

aws ec2 create-volume --size 10 --volume-type gp3 --availability-zone ap-northeast-2a --tag-specifications 'ResourceType=volume,Tags=[{Key=Name,Value=wsi-ebs}]'
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Policy

cat << EOF > ebs_policy.json
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ec2:CreateSnapshot",
                "ec2:DescribeVolumes",
                "ec2:DescribeSnapshots"
            ],
            "Resource": "*"
        }
    ]
}
EOF
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Create Policy

NodeGroup Role Attach Policy

NODEGROUP_ROLE_NAME=$(aws eks describe-nodegroup --cluster-name $EKS_CLUSTER_NAME --nodegroup-name $EKS_NODE_GROUP_NAME --query "nodegroup.nodeRole" --output text | cut -d'/' -f2-)

aws iam attach-role-policy \
    --policy-arn arn:aws:iam::$(aws sts get-caller-identity --query "Account" --output text):policy/EBSforEKSPolicy \
    --role-name $NODEGROUP_ROLE_NAME
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Create Namespace

kubectl create ns skills
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Apply Cronjob

EBS_ID=$(aws ec2 describe-volumes --filters Name=tag:Name,Values=wsi-ebs --query 'Volumes[*].VolumeId' --output text)
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apiVersion: batch/v1
kind: CronJob
metadata:
  name: ebs-snapshot-cronjob
  namespace: skills
spec:
  schedule: "*/10 * * * *" # 10분마다 실행
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: ebs-snapshot
              image: amazon/aws-cli
              command:
                [
                  "sh",
                  "-c",
                  "aws ec2 create-snapshot --volume-id EBS_ID --description 'Automated backup'",
                ]
          restartPolicy: OnFailure
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sed -i "s|EBS_ID|$EBS_ID|g" backup.yaml
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kubectl apply -f backup.yaml
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Check

kubectl get cronjob ebs-snapshot-cronjob -n skills
kubectl get jobs --sort-by=.metadata.creationTimestamp -n skills
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