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WalkthroughThis update introduces significant refactoring and restructuring of containerization and Kubernetes deployment resources for a banking application. The Dockerfile and docker-compose files are modernized and simplified, updating images, paths, and configuration details. Kubernetes manifests are extensively overhauled: new resources are added for deployments, services, persistent storage, config maps, and secrets, while several outdated or redundant files are removed. Notably, MySQL is now managed via StatefulSet with persistent storage, and the application deployment and service definitions are updated for improved clarity and alignment with best practices. Environment variables, namespaces, and resource names are standardized throughout. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant BankApp Pod
participant MySQL Pod
participant ConfigMap/Secret
participant PersistentVolume
User->>BankApp Pod: Sends request (port 8080/8081)
BankApp Pod->>ConfigMap/Secret: Reads DB credentials/config
BankApp Pod->>MySQL Pod: Connects to MySQL (port 3306)
MySQL Pod->>PersistentVolume: Reads/Writes data
MySQL Pod->>ConfigMap/Secret: Reads DB credentials/config
BankApp Pod-->>User: Returns response
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Actionable comments posted: 17
🔭 Outside diff range comments (1)
kubernetes/mysql-deployment.yml (1)
1-19:⚠️ Potential issueDuplicate StatefulSet manifest detected
You now have two StatefulSet definitions for MySQL (mysql-statefullset.ymlvs. thismysql-deployment.yml) with different storage sizes and names. This will cause conflicts. Please consolidate into a single manifest or remove the redundant one.
🧹 Nitpick comments (12)
kubernetes/persistent-volume-claim.yaml (1)
7-12: Review storage settings.
storageClassNameis set tostandardand the request was reduced to5Gi. Ensure thestandardStorageClass exists in your target cluster and that5Gimeets the application’s persistence requirements.kubernetes/configMap.yml (1)
9-9: Quote the JDBC URL to prevent YAML parsing issues.Your unquoted URL value contains
:and?characters which can be misinterpreted by some YAML parsers. Wrap it in double quotes:- SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/bankappdb?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC + SPRING_DATASOURCE_URL: "jdbc:mysql://mysql:3306/bankappdb?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC"Dockerfile (1)
2-6: Optimize Maven layer caching.Copying the entire context before downloading dependencies invalidates the cache on every code change. Consider splitting into two steps:
FROM maven:3.9.6-eclipse-temurin-17-alpine AS builder WORKDIR /app # Copy only pom.xml first to cache dependency download COPY pom.xml . RUN mvn dependency:go-offline # Now copy the rest and build COPY src ./src RUN mvn clean install -DskipTests=trueThis will speed up iterative builds.
kubernetes/mysql-service.yml (2)
12-12: Remove trailing whitespace.There’s an extra space after
3306which may trigger lint errors.- port: 3306 + port: 3306🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 12-12: trailing spaces
(trailing-spaces)
14-15: Remove extra blank lines at EOF.Trimming unnecessary empty lines improves YAML cleanliness and avoids lint warnings.
🧰 Tools
🪛 YAMLlint (1.35.1)
[warning] 14-14: too many blank lines
(1 > 0) (empty-lines)
kubernetes/persistentVolumeClaim.yml (1)
1-2: Inconsistent filename casing vs. repo conventions.
The filenamepersistentVolumeClaim.ymluses camelCase, while most manifests in this repo follow kebab-case (e.g.persistent-volume.yaml). Rename topersistent-volume-claim.yamlfor consistency.kubernetes/bankapp-service.yaml (1)
1-5: Filename and resource name mismatch.
This file is namedbankapp-service.yamlbut defines a Servicebank-svc. For clarity, rename tobank-service.yamlorbank-svc.yamlto align the filename with the resource it contains.kubernetes/configmap.yaml (1)
1-5: Use a descriptive filename.
configmap.yamlis generic; consider renaming tobank-configmap.yamlto reflect the ConfigMap name and improve discoverability.kubernetes/persistent-volume.yaml (1)
8-14: Explicitly set reclaim policy and hostPath type.
It's best practice to define:persistentVolumeReclaimPolicy: Retainand under
hostPathadd:type: DirectoryOrCreateto ensure the directory is present and reclaim behavior is clear.
kubernetes/mysql-statefullset.yml (1)
35-48: Clean up YAML formatting
There are trailing spaces, an extra blank line, and an indentation mismatch in the volume claim section which will trigger lint errors.Please remove trailing spaces on line 35, delete the blank line at 48, and adjust indentation under
accessModesto 6 spaces:- accessModes: - - ReadWriteOnce + accessModes: + - ReadWriteOnce🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 35-35: trailing spaces
(trailing-spaces)
[warning] 44-44: wrong indentation: expected 6 but found 7
(indentation)
[warning] 48-48: too many blank lines
(1 > 0) (empty-lines)
docker-compose.yml (1)
22-22: Quote complex URL values
The JDBC URL contains multiple colons and parameters—wrap it in quotes to ensure proper parsing by the YAML engine.- SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/bankappdb?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC + SPRING_DATASOURCE_URL: "jdbc:mysql://mysql:3306/bankappdb?useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC"kubernetes/bankapp-deployment.yml (1)
45-60: Clean up trailing spaces and indentation
Several lines (e.g., trailing spaces on comments and blank lines) will fail YAML lint. Please runyamllintor remove trailing whitespace and ensure consistent indentation.🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 49-49: trailing spaces
(trailing-spaces)
[error] 50-50: trailing spaces
(trailing-spaces)
[error] 55-55: trailing spaces
(trailing-spaces)
[error] 57-57: trailing spaces
(trailing-spaces)
[error] 58-58: trailing spaces
(trailing-spaces)
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📒 Files selected for processing (23)
Dockerfile(1 hunks)docker-compose.yml(1 hunks)kubernetes/bank-deployment.yml(1 hunks)kubernetes/bank-service.yml(1 hunks)kubernetes/bankapp-deployment.yml(1 hunks)kubernetes/bankapp-hpa.yml(0 hunks)kubernetes/bankapp-ingress.yml(0 hunks)kubernetes/bankapp-namespace.yaml(1 hunks)kubernetes/bankapp-service.yaml(1 hunks)kubernetes/config.yml(1 hunks)kubernetes/configMap.yml(1 hunks)kubernetes/configmap.yaml(1 hunks)kubernetes/letsencrypt-clusterissuer.yaml(0 hunks)kubernetes/mysql-deployment.yml(2 hunks)kubernetes/mysql-service.yaml(1 hunks)kubernetes/mysql-service.yml(1 hunks)kubernetes/mysql-statefullset.yml(1 hunks)kubernetes/peristentVolume.yml(1 hunks)kubernetes/persistent-volume-claim.yaml(1 hunks)kubernetes/persistent-volume.yaml(1 hunks)kubernetes/persistentVolumeClaim.yml(1 hunks)kubernetes/secret.yml(1 hunks)kubernetes/secrets.yaml(1 hunks)
💤 Files with no reviewable changes (3)
- kubernetes/bankapp-ingress.yml
- kubernetes/letsencrypt-clusterissuer.yaml
- kubernetes/bankapp-hpa.yml
🧰 Additional context used
🪛 YAMLlint (1.35.1)
kubernetes/secrets.yaml
[error] 11-11: trailing spaces
(trailing-spaces)
kubernetes/mysql-service.yaml
[error] 11-11: trailing spaces
(trailing-spaces)
[warning] 13-13: wrong indentation: expected 4 but found 3
(indentation)
kubernetes/mysql-service.yml
[error] 12-12: trailing spaces
(trailing-spaces)
[warning] 14-14: too many blank lines
(1 > 0) (empty-lines)
kubernetes/mysql-statefullset.yml
[warning] 30-30: too many spaces after colon
(colons)
[warning] 34-34: too many spaces after colon
(colons)
[error] 35-35: trailing spaces
(trailing-spaces)
[warning] 44-44: wrong indentation: expected 6 but found 7
(indentation)
[warning] 48-48: too many blank lines
(1 > 0) (empty-lines)
kubernetes/bankapp-deployment.yml
[warning] 22-22: wrong indentation: expected 8 but found 10
(indentation)
[error] 23-23: trailing spaces
(trailing-spaces)
[error] 49-49: trailing spaces
(trailing-spaces)
[error] 50-50: trailing spaces
(trailing-spaces)
[error] 55-55: trailing spaces
(trailing-spaces)
[error] 57-57: trailing spaces
(trailing-spaces)
[error] 58-58: trailing spaces
(trailing-spaces)
🪛 Gitleaks (8.21.2)
kubernetes/secret.yml
1-9: Possible Kubernetes Secret detected, posing a risk of leaking credentials/tokens from your deployments
(kubernetes-secret-yaml)
🔇 Additional comments (6)
kubernetes/persistent-volume-claim.yaml (1)
4-5:Details
✅ Verification successful
Verify PVC renaming consistency.
The PVC was renamed frommysql-pvcinbankapp-namespacetobank-pvcinbank. Ensure no remaining references to the old claim in StatefulSets or Services.
🏁 Script executed:
rg -n "mysql-pvc"Length of output: 17
PVC renaming consistency verified
- Ran
rg -n "mysql-pvc"across the repo; no occurrences of the old PVC name remain.Dockerfile (1)
11-13: Align exposed port with Kubernetes Service.You’ve set
EXPOSE 8081here but your bank‑service manifest targets port 8080. Confirm whether your application listens on 8081, or adjust one side for consistency to avoid routing failures.kubernetes/bank-service.yml (1)
9-12: Verify YAML list indentation underports.The dash (
- protocol: TCP) should be indented underports:to form a proper YAML sequence. For example:ports: - protocol: TCP port: 8080 targetPort: 8080Ensure this indentation matches in your file to prevent manifest parsing errors.
kubernetes/mysql-service.yaml (2)
11-11: Remove trailing whitespace.
There's an extra space aftermysqlwhich YAML linters flag. Remove it to avoid parsing issues.
[ suggest_nitpick ]🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 11-11: trailing spaces
(trailing-spaces)
10-11: Verify service selector matches pod labels.
The service selector isapp: mysql, but ensure your MySQL StatefulSet/Deployment pods are labeled exactlyapp: mysql. A mismatch will cause the service to select zero endpoints.🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 11-11: trailing spaces
(trailing-spaces)
kubernetes/configmap.yaml (1)
7-10: Verify ConfigMap usage in Deployments.
Ensure thatbank-configmapis referenced in your Deployment manifests (e.g.,bank-deployment.yml) viaenvFromor explicitenventries so these values are injected correctly.
| @@ -1,6 +1,4 @@ | |||
| apiVersion: v1 | |||
| kind: Namespace | |||
| apiVersion: v1 | |||
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💡 Verification agent
🧩 Analysis chain
Confirm namespace renaming and manifest consistency.
The namespace was renamed from bankapp-namespace to bank and the apiVersion/kind order change is harmless. Ensure all Kubernetes manifests and tooling (Helm charts, scripts, GitOps config, etc.) reference the new namespace.
Run this from the repo root to catch any stray references:
Also applies to: 4-4
🏁 Script executed:
#!/bin/bash
rg -n "bankapp-namespace"Length of output: 2179
Update lingering references to the old namespace
Your rename from bankapp-namespace to bank is correct, but there are still stray references in docs and Helm charts. Please update all of the following to use bank instead:
- kubernetes/README.md
- Line 127:
--dest-namespace bankapp-namespace - Line 208:
kubectl get certificate -n bankapp-namespace - Line 217:
kubectl get all -n bankapp-namespace - Line 238:
kubectl top pods -n bankapp-namespace
- Line 127:
- helm/bankapp/values.yaml (line 2:
namespace: bankapp-namespace) - helm/bankapp/templates/
- vpa.yaml (namespace default)
- secrets.yml
- service.yml
- persistentVolumeClaim.yml
- persistentVolume.yml
- namespace.yml
- mysqlStatefulSet.yml
- mysqlService.yml
- ingress.yml
- hpa.yaml
- deployment.yml
- configMap.yml (including the SPRING_DATASOURCE_URL host)
Ensure every default "bankapp-namespace" and hard‑coded bankapp-namespace is replaced with bank.
| name: bank-secret | ||
| namespace: bank | ||
|
|
||
| type: opaque |
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Fix Secret type casing and remove trailing whitespace.
The field type: opaque is invalid; it must be capitalized as Opaque per Kubernetes API. Also remove the trailing spaces on line 11 to satisfy linting.
Apply this diff:
@@ -7,1 +7,1 @@
-type: opaque
+type: Opaque
@@ -11,1 +11,0 @@
- Also applies to: 11-11
| @@ -0,0 +1,10 @@ | |||
| kind: clster | |||
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Correct the kind typo to Cluster.
The field kind: clster is misspelled and will prevent the kind cluster from provisioning. It should read Cluster.
Apply this diff:
@@ -1,1 +1,1 @@
-kind: clster
+kind: Cluster📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| kind: clster | |
| kind: Cluster |
| apiVersion: v1 | ||
| kind: Secret | ||
| metadata: | ||
| name: bank-secret | ||
| namespace: bank | ||
| type: Opaque | ||
| data: | ||
| MYSQL_ROOT_PASSWORD: VGVzdEAxMjM= | ||
| SPRING_DATASOURCE_PASSWORD: VGVzdEAxMjM= |
There was a problem hiding this comment.
Duplicate bank-secret Secret detected.
There are two manifests (secrets.yaml and secret.yml) both defining bank-secret in the same bank namespace. This will cause a resource conflict on apply. Consolidate into a single Secret manifest or rename one to avoid collisions.
Also consider using sealed-secrets or an external secret store (Vault, AWS Secrets Manager, etc.) for more secure credentials management.
🧰 Tools
🪛 Gitleaks (8.21.2)
1-9: Possible Kubernetes Secret detected, posing a risk of leaking credentials/tokens from your deployments
(kubernetes-secret-yaml)
| name: bank-pvc | ||
| namespace: bank |
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Flag invalid namespace on PersistentVolume.
PersistentVolumes are cluster‐scoped resources and do not support a metadata.namespace field. Remove the namespace: bank entry to avoid manifest validation errors.
| labels: | ||
| app: bankapp | ||
| spec: | ||
| replica: 3 |
There was a problem hiding this comment.
Correct replica field to replicas
The field replica: 3 is invalid—it should be replicas: 3—otherwise Kubernetes will ignore your replica count.
-spec:
- replica: 3
+spec:
+ replicas: 3📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| replica: 3 | |
| spec: | |
| replicas: 3 |
| MYSQL_ROOT_PASSWORD: Test@123 | ||
| MYSQL_DATABASE: bankappdb |
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Avoid committing plaintext credentials
The root password Test@123 is hard‑coded in your Compose file. This exposes sensitive data. Consider using Docker secrets or environment files (.env) to inject credentials securely.
| env: | ||
| - name: SPRING_DATASOURCE_URL | ||
| - name: SPRING_DATASOURCE_PASSWORD | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: bankapp-config | ||
| key: SPRING_DATASOURCE_URL | ||
| secretKeyRef: | ||
| name: bank-secret | ||
| key: SPRING_DATASOURCE_PASSWORD | ||
|
|
||
| - name: SPRING_DATASOURCE_USERNAME | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: bankapp-config | ||
| name: bank-configmap | ||
| key: SPRING_DATASOURCE_USERNAME | ||
| - name: MYSQL_DATABASE | ||
|
|
||
| - name: SPRING_DATASOURCE_URL | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: bankapp-config | ||
| key: MYSQL_DATABASE | ||
| - name: SPRING_DATASOURCE_PASSWORD | ||
| valueFrom: | ||
| secretKeyRef: | ||
| name: mysql-secret | ||
| key: SPRING_DATASOURCE_PASSWORD | ||
| # readinessProbe: | ||
| # httpGet: | ||
| # path: /actuator/health # Update this based on your app's health endpoint | ||
| # port: 8080 | ||
| # initialDelaySeconds: 10 | ||
| # periodSeconds: 5 | ||
| # livenessProbe: | ||
| # httpGet: | ||
| # path: /actuator/health # Update this based on your app's health endpoint | ||
| # port: 8080 | ||
| # initialDelaySeconds: 30 | ||
| # periodSeconds: 10 | ||
| name: bank-configmap | ||
| key: SPRING_DATASOURCE_URL |
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Correct Secret vs ConfigMap refs and names
- The password is pulled via
configMapKeyReffrombank-secret—this must besecretKeyRef. - The ConfigMap name
bank-configmapdoesn’t match the actual ConfigMapbank-config.
These mismatches will prevent your app from getting credentials.
- - name: SPRING_DATASOURCE_PASSWORD
- valueFrom:
- configMapKeyRef:
- name: bank-secret
- key: SPRING_DATASOURCE_PASSWORD
+ - name: SPRING_DATASOURCE_PASSWORD
+ valueFrom:
+ secretKeyRef:
+ name: bank-secret
+ key: SPRING_DATASOURCE_PASSWORD
- - name: SPRING_DATASOURCE_USERNAME
- valueFrom:
- configMapKeyRef:
- name: bank-configmap
- key: SPRING_DATASOURCE_USERNAME
+ - name: SPRING_DATASOURCE_USERNAME
+ valueFrom:
+ configMapKeyRef:
+ name: bank-config
+ key: SPRING_DATASOURCE_USERNAME
- - name: SPRING_DATASOURCE_URL
- valueFrom:
- configMapKeyRef:
- name: bank-configmap
- key: SPRING_DATASOURCE_URL
+ - name: SPRING_DATASOURCE_URL
+ valueFrom:
+ configMapKeyRef:
+ name: bank-config
+ key: SPRING_DATASOURCE_URLCommittable suggestion skipped: line range outside the PR's diff.
| image: swayamnakshane/bank | ||
| ports: | ||
| - containerPort: 8080 | ||
| - containerPort: 8080 |
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💡 Verification agent
🧩 Analysis chain
Verify container port matches Dockerfile
The containerPort is set to 8080, but the updated Dockerfile may expose 8081. Please verify and update to the correct port or adjust your Dockerfile accordingly.
Run this script to confirm the exposed port:
🏁 Script executed:
#!/bin/bash
# Check which port is exposed in the Dockerfile
rg -n '^EXPOSE' .Length of output: 47
Update containerPort to match Dockerfile
The Dockerfile exposes port 8081, but the Kubernetes manifest still uses 8080. Please align them by updating the deployment spec.
• File: kubernetes/bankapp-deployment.yml
• Line: 22
- - containerPort: 8080
+ - containerPort: 8081📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| - containerPort: 8080 | |
| - containerPort: 8081 |
🧰 Tools
🪛 YAMLlint (1.35.1)
[warning] 22-22: wrong indentation: expected 8 but found 10
(indentation)
| - name: MYSQL_DATABASE | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: bankapp-config | ||
| name: bank-configmap | ||
| key: MYSQL_DATABASE |
There was a problem hiding this comment.
Fix ConfigMap reference name
MYSQL_DATABASE is pulled from bank-configmap, but your ConfigMap is named bank-config. This mismatch will prevent the database from being set up.
- - name: MYSQL_DATABASE
- valueFrom:
- configMapKeyRef:
- name: bank-configmap
- key: MYSQL_DATABASE
+ - name: MYSQL_DATABASE
+ valueFrom:
+ configMapKeyRef:
+ name: bank-config
+ key: MYSQL_DATABASE📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| - name: MYSQL_DATABASE | |
| valueFrom: | |
| configMapKeyRef: | |
| name: bankapp-config | |
| name: bank-configmap | |
| key: MYSQL_DATABASE | |
| - name: MYSQL_DATABASE | |
| valueFrom: | |
| configMapKeyRef: | |
| name: bank-config | |
| key: MYSQL_DATABASE |
2 participants
kuberntes files changed
Summary by CodeRabbit
New Features
Improvements
Removals