---
id: developer-tools
title: CLI & Language Issues
description: Even if you installed the Root CA on your operating system, many developer tools and programming languages ignore the system store.
---

import { Callout, Steps } from 'nextra/components'
import { Terminal, Code, Server, Download } from 'lucide-react'

# CLI & Language Issues

Even if you installed the Root CA on your operating system, many developer tools and programming languages **ignore the system store** and use their own.

<Callout type="info" emoji={<Download className="w-5 h-5" />}>
  **Prerequisite:**
  You must have the **`trustlab-root.crt`** file downloaded on your machine first.
  [Download it here](/guide/getting-started/install-root-ca).
</Callout>

If your code or scripts are failing with certificate errors, check the solutions below.

## 1. cURL & Wget

Standard command-line tools often look for a specific bundle file.

### cURL
<Callout type="error" emoji={<Terminal className="w-5 h-5" />}>
  `curl: (60) SSL certificate problem: unable to get local issuer certificate`
</Callout>

**Solution:**
Pass the Root CA explicitly:
```bash copy
curl --cacert /path/to/trustlab-root.crt https://your-domain.local
```

### Wget
**Solution:**
```bash copy
wget --ca-certificate=/path/to/trustlab-root.crt https://your-domain.local
```

---

## 2. Node.js / JavaScript

Node.js does not use the System Root CA by default.

<Callout type="error" emoji={<Server className="w-5 h-5" />}>
  `Error: self signed certificate in certificate chain`
</Callout>

**Solution (Environment Variable):**
Set this variable before running your application. It works for most Node.js apps (npm, yarn, custom scripts).

```bash copy
export NODE_EXTRA_CA_CERTS="/path/to/trustlab-root.crt"
node server.js
```

---

## 3. Python (Requests/Pip)

Python's `requests` library (and `pip`) uses its own certificate bundle (`certifi`), ignoring Windows/macOS/Linux system stores.

<Callout type="error" emoji={<Code className="w-5 h-5" />}>
  `SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed'))`
</Callout>

**Solution:**
Point to your Root CA using an environment variable.

```bash copy
export REQUESTS_CA_BUNDLE="/path/to/trustlab-root.crt"
python script.py
```

---

## 4. Java Applications

Java uses a proprietary "Keystore" (JKS) and typically **ignores** the Windows Certificate Store.

<Callout type="error" emoji={<Code className="w-5 h-5" />}>
  `sun.security.validator.ValidatorException: PKIX path building failed`
</Callout>

**Solution:**
You must import the TrustLab Root CA into the Java Keystore (cacerts).

<Steps>
### Locate standard cacerts
Usually at `$JAVA_HOME/lib/security/cacerts`.

### Import with keytool
```bash copy
keytool -import -trustcacerts -alias trustlab-root \
  -file trustlab-root.crt \
  -keystore "$JAVA_HOME/lib/security/cacerts"
```
*Default password is typically `changeit`.*
</Steps>