Vultr

Vultr is fully supported by Fleex with competitive pricing.

Getting Started

1. Create Vultr Account

Sign up at vultr.com if you don't have an account.

2. Generate API Key

1. Go to API Settings
2. Click "Enable API"
3. Copy the API Key
4. Add your IP to the Access Control list (or allow all IPs)

3. Configure Fleex

Run the initialization wizard:

fleex init --wizard

Or add Vultr to existing config:

fleex init --add-provider vultr

4. Manual Configuration

Edit ~/.config/fleex/config.json:

{
  "settings": {
    "provider": "vultr"
  },
  "providers": {
    "vultr": {
      "token": "YOUR_VULTR_API_KEY",
      "region": "ewr",
      "size": "vc2-1c-1gb",
      "image": "387",
      "port": 22,
      "username": "root"
    }
  }
}

Regions

Region ID	Location
ewr	New Jersey
ord	Chicago
dfw	Dallas
sea	Seattle
lax	Los Angeles
atl	Atlanta
ams	Amsterdam
lhr	London
fra	Frankfurt
par	Paris
sgp	Singapore
nrt	Tokyo
icn	Seoul
syd	Sydney
mia	Miami

Info

Full list: Vultr Regions API

Instance Sizes

Size ID	Name	RAM	vCPUs	Price/hour	Price/month
vc2-1c-1gb	Cloud Compute	1GB	1	$0.006	$4
vc2-1c-2gb	Cloud Compute	2GB	1	$0.012	$8
vc2-2c-4gb	Cloud Compute	4GB	2	$0.024	$16
vc2-4c-8gb	Cloud Compute	8GB	4	$0.048	$32
vc2-6c-16gb	Cloud Compute	16GB	6	$0.095	$64
vc2-8c-32gb	Cloud Compute	32GB	8	$0.190	$128

Info

Full list: Vultr Plans API

Images

Default Images (OS IDs)

Image ID	Description
387	Ubuntu 22.04 LTS
1743	Ubuntu 24.04 LTS
477	Debian 11
1946	Debian 12

Note

Vultr uses numeric OS IDs. Get the full list from Vultr OS API

Custom Images (Snapshots)

After building with --snapshot:

fleex build run -r security-tools -n build --snapshot

List your snapshots:

fleex images ls -p vultr

Use snapshot ID in config:

"image": "a1b2c3d4-e5f6-7890-abcd-ef1234567890"

Example Configuration

Recommended configuration for bug bounty:

{
  "settings": {
    "provider": "vultr"
  },
  "providers": {
    "vultr": {
      "token": "YOUR_TOKEN",
      "region": "ewr",
      "size": "vc2-1c-1gb",
      "image": "387",
      "port": 22,
      "username": "root"
    }
  }
}

Cost Examples

Vultr offers the lowest prices among supported providers:

Fleet Size	Instance	Hourly Cost	Daily Cost
10	vc2-1c-1gb	$0.06	$1.44
20	vc2-1c-1gb	$0.12	$2.88
50	vc2-1c-1gb	$0.30	$7.20
10	vc2-2c-4gb	$0.24	$5.76

Use fleex estimate to calculate costs:

fleex estimate -t targets.txt -i 10 -p vultr

Workflow Example

Complete workflow using Vultr:

# Initialize
fleex init --wizard

# Estimate cost
fleex estimate -t targets.txt -i 20 --tool nuclei -p vultr

# Spawn and build
fleex spawn -n scan -c 20 -p vultr --build security-tools

# Verify fleet
fleex status scan

# Run scan
fleex scan -n scan --workflow quick-scan -i targets.txt -o results.txt

# Clean up
fleex delete -n scan

API Access Control

Vultr requires IP whitelisting for API access:

1. Go to API Settings
2. Under "Access Control", add your IP address
3. Or select "Allow All IPv4" (less secure)

Warning

If you get API authentication errors, check that your IP is whitelisted.

Troubleshooting

Instance Limit

Default limit varies by account age and billing history. To increase:

1. Open a support ticket at Vultr Support
2. Request higher instance limit

API Authentication Failed

If API calls fail:

1. Verify API key is correct
2. Check IP is in Access Control list
3. Ensure API is enabled in settings

SSH Connection Issues

If SSH fails:

1. Check instance status: fleex status
2. Vultr instances may take longer to boot
3. Try explicit port: fleex ssh -n instance-1 --port 22

Snapshot Not Found

If custom snapshot fails:

1. List snapshots: fleex images ls -p vultr
2. Verify snapshot ID is UUID format
3. Check snapshot status is "complete"

Provider Comparison

Feature	Vultr	Linode	DigitalOcean
Min Price/hour	$0.006	$0.0075	$0.00744
API Rate Limit	Generous	Moderate	Moderate
Snapshot Storage	Free (limited)	$0.06/GB	$0.05/GB
Regions	25+	11	14