Elastic Beanstalk에서 EKS로 서비스 전환

1#### cluster
2resource "aws_eks_cluster" "seoul_cluster" {
3  name                          = var.cluster_name
4  role_arn                      = data.aws_iam_role.eks_cluster_role.arn
5  version                       = var.cluster_version
6  bootstrap_self_managed_addons = false
7  enabled_cluster_log_types     = []
8
9  access_config {
10    authentication_mode                         = "API_AND_CONFIG_MAP"
11    bootstrap_cluster_creator_admin_permissions = true
12  }
13
14  vpc_config {
15    security_group_ids      = [data.aws_security_group.control-plane-sg.id]
16    endpoint_public_access  = false
17    endpoint_private_access = true
18    # public_access_cidrs = ["<CIDR>"]
19    subnet_ids = [for s in data.aws_subnet.private_subnets : s.id]
20  }
21
22  kubernetes_network_config {
23    service_ipv4_cidr = "<CIDR>"
24  }
25
26  zonal_shift_config {
27    enabled = false
28  }
29
30  tags = {
31    Name                                   = var.cluster_name
32    "alpha.eksctl.io/cluster-oidc-enabled" = "true"
33    "AWS.SSM.AppManager.EKS.Cluster.ARN"   = "arn:aws:eks:<REGION>:<ACCOUNT_ID>:cluster/<CLUSTER_NAME>"
34  }
35}

1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  name: service
5  namespace: test-seoul
6spec:
7  selector:
8    matchLabels:
9      app: service
10  replicas: 1
11  template:
12  # ... template metadata/toleration 중간 설정 생략 ...
13      containers:
14      - name: service
15        image: <IMAGE_URI>
16        imagePullPolicy: Always
17        ports:
18        - containerPort: 8080
19          protocol: TCP
20        readinessProbe:
21          httpGet:
22            path: /
23            port: 8080
24          initialDelaySeconds: 120
25          periodSeconds: 30
26          failureThreshold: 5
27        resources:
28          requests:
29            cpu: 10m
30            memory: 1024Mi
31          limits:
32            cpu: 500m
33            memory: 2048Mi

1def get_max_replicas_from_message(message: str):
2    try:
3        evt = json.loads(message)
4
5        ann = (
6            evt.get("involvedObject", {})
7               .get("annotations", {})
8        )
9        raw_last_applied = ann.get("kubectl.kubernetes.io/last-applied-configuration")
10        if not raw_last_applied:
11            return None
12
13        last_applied = json.loads(raw_last_applied)
14
15        return last_applied.get("spec", {}).get("maxReplicas"), last_applied.get("spec", {}).get("minReplicas")
16    except (json.JSONDecodeError, TypeError, AttributeError):
17        return None