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---
title: Configuring Tencent Cloud COS Storage Service
description: >-
Detailed steps to configure Tencent Cloud COS storage service for smooth file
storage.
tags:
- Tencent Cloud COS
- S3 Storage
- File Storage
- Environment Variables
---
# Configuring Tencent Cloud COS Storage Service
We need to configure S3 storage service for file storage in the server-side database.
## Configuration Steps
<Steps>
### Configure and Obtain S3 Bucket
Create a new bucket on [Tencent Cloud COS](https://console.cloud.tencent.com/cos/bucket):
<Image alt={'Tencent Cloud COS Storage Interface'} src={'https://github.com/user-attachments/assets/d3626294-74ba-4944-9a63-052e6cf719ab'} />
Name the bucket (e.g., 'lobe'). Choose 'Public Read, Private Write', select any region, and keep other settings default.
<Image alt={'COS Create Bucket'} src={'https://github.com/user-attachments/assets/7257eb0e-4e2c-4db2-981d-354598e2c60f'} />
### Get Bucket-related Environment Variables
View bucket information in COS bucket overview:
<Image alt={'View Bucket Information'} src={'https://github.com/user-attachments/assets/d7d65e32-679d-4e50-a933-28cf5dde1330'} />
Corresponding environment variables:
```shell
S3_BUCKET=lobe-130xxxxxx2
S3_ENDPOINT=https://cos.ap-chengdu.myqcloud.com
S3_REGION=ap-chengdu
S3_PUBLIC_DOMAIN=https://lobe-1251234567.cos.ap-chengdu.myqcloud.com
```
<Callout type={'warning'}>
Note: `S3_ENDPOINT` should be `https://cos.ap-chengdu.myqcloud.com`, not `https://lobe-130xxxxxx2.cos.ap-chengdu.myqcloud.com`
Include `https://` in the URL
</Callout>
### Configure CORS
Add the following in 'Security Management - CORS Settings':
<Image alt={'Configure CORS'} src={'https://github.com/user-attachments/assets/35164b25-c964-42ce-9cb0-32f6ebe1d07c'} />
### Get S3 Keys
Create a new SecretId and SecretKey at [Tencent Cloud API Key Management](https://console.cloud.tencent.com/cam/capi). Use as `S3_ACCESS_KEY_ID` and `S3_SECRET_ACCESS_KEY`.
</Steps>
### Additional Notes
- Consider setting up CDN acceleration for improved access speed and reduced costs.
- Use role management when creating API keys for enhanced security.