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Fix HAProxy 2.6 compatibility for default backend
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- Replace http-response set-body (HAProxy 2.8+) with local server approach
- Add separate Flask server on port 8080 to serve default page
- Update default backend template to use local server instead of inline HTML
- Maintain all customization features via environment variables
- Fix JavaScript error handling for domains API response
This commit is contained in:
jknapp 2025-07-11 19:27:42 -07:00
parent 27f3f8959b
commit fac6cef0db
4 changed files with 63 additions and 19 deletions
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__pycache__/haproxy_manager.cpython-310.pyc Normal file
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55
haproxy_manager.py
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@ -286,6 +286,17 @@ def add_domain():
def index():
return render_template('index.html')
@app.route('/default-page')
def default_page():
"""Serve the default page for unmatched domains"""
admin_email = os.environ.get('HAPROXY_ADMIN_EMAIL', 'admin@example.com')
return render_template('default_page.html',
page_title=os.environ.get('HAPROXY_DEFAULT_PAGE_TITLE', 'Site Not Configured'),
main_message=os.environ.get('HAPROXY_DEFAULT_MAIN_MESSAGE', 'This domain has not been configured yet. Please contact your system administrator to set up this website.'),
secondary_message=os.environ.get('HAPROXY_DEFAULT_SECONDARY_MESSAGE', 'If you believe this is an error, please check the domain name and try again.')
)
@app.route('/api/ssl', methods=['POST'])
@require_api_key
def request_ssl():
@ -789,18 +800,7 @@ def generate_config():
config_parts.append(letsencrypt_backend)
# Add Default Backend
try:
# Render the default page template with customizable content
default_page_template = template_env.get_template('default_page.html')
default_page_content = default_page_template.render(
page_title=os.environ.get('HAPROXY_DEFAULT_PAGE_TITLE', 'Site Not Configured'),
main_message=os.environ.get('HAPROXY_DEFAULT_MAIN_MESSAGE', 'This domain has not been configured yet. Please contact your system administrator to set up this website.'),
secondary_message=os.environ.get('HAPROXY_DEFAULT_SECONDARY_MESSAGE', 'If you believe this is an error, please check the domain name and try again.')
)
default_page_content = default_page_content.replace('"', '\\"').replace('\n', '\\n')
default_backend = template_env.get_template('hap_default_backend.tpl').render(
default_page_content=default_page_content
)
default_backend = template_env.get_template('hap_default_backend.tpl').render()
config_parts.append(default_backend)
except Exception as e:
logger.error(f"Error generating default backend: {e}")
@ -809,8 +809,7 @@ def generate_config():
backend default-backend
mode http
option http-server-close
http-response set-header Content-Type text/html
http-response set-body "<!DOCTYPE html><html><head><title>Site Not Configured</title></head><body><h1>Site Not Configured</h1><p>This domain has not been configured yet.</p></body></html>"'''
server default-page 127.0.0.1:8080'''
config_parts.append(fallback_backend)
# Add Backends
config_parts.append('\n' .join(config_backends) + '\n')
@ -898,4 +897,32 @@ if __name__ == '__main__':
generate_self_signed_cert(SSL_CERTS_DIR)
start_haproxy()
certbot_register()
# Run Flask app on port 8000 for API and port 8080 for default page
from threading import Thread
def run_default_page_server():
"""Run a separate Flask app on port 8080 for the default page"""
from flask import Flask, render_template
default_app = Flask(__name__)
default_app.template_folder = 'templates'
@default_app.route('/')
def default_page():
"""Serve the default page for unmatched domains"""
admin_email = os.environ.get('HAPROXY_ADMIN_EMAIL', 'admin@example.com')
return render_template('default_page.html',
page_title=os.environ.get('HAPROXY_DEFAULT_PAGE_TITLE', 'Site Not Configured'),
main_message=os.environ.get('HAPROXY_DEFAULT_MAIN_MESSAGE', 'This domain has not been configured yet. Please contact your system administrator to set up this website.'),
secondary_message=os.environ.get('HAPROXY_DEFAULT_SECONDARY_MESSAGE', 'If you believe this is an error, please check the domain name and try again.')
)
default_app.run(host='0.0.0.0', port=8080)
# Start the default page server in a separate thread
default_server_thread = Thread(target=run_default_page_server, daemon=True)
default_server_thread.start()
# Run the main API server
app.run(host='0.0.0.0', port=8000)

5
templates/hap_default_backend.tpl
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@ -7,6 +7,5 @@ backend default-backend
http-request set-header X-Forwarded-For %[src]
http-request set-header X-Real-IP %[src]
# Serve the default page HTML response
http-response set-header Content-Type text/html
http-response set-body "{{ default_page_content }}"
# Serve the default page HTML response using a local server
server default-page 127.0.0.1:8080

22
templates/index.html
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@ -346,16 +346,34 @@
function loadDomains() {
fetch('/api/domains')
.then(response => response.json())
.then(response => {
if (!response.ok) {
throw new Error(`HTTP ${response.status}: ${response.statusText}`);
}
return response.json();
})
.then(domains => {
const domainList = document.getElementById('domainList');
domainList.innerHTML = '';
// Ensure domains is an array
if (!Array.isArray(domains)) {
console.error('Expected array of domains, got:', typeof domains, domains);
showStatus('Error: Invalid response format from server', 'error');
return;
}
if (domains.length === 0) {
domainList.innerHTML = '<div class="domain-list-item"><p>No domains configured yet. Add your first domain above.</p></div>';
return;
}
domains.forEach(domain => {
const domainDiv = document.createElement('div');
domainDiv.className = 'domain-list-item';
domainDiv.innerHTML = `
<h3>${domain.domain}</h3>
<p>Backend: ${domain.backend_name}</p>
<p>Backend: ${domain.backend_name || 'Not configured'}</p>
<p>SSL: ${domain.ssl_enabled ? 'Enabled' : 'Disabled'}</p>
<button onclick="requestSSL('${domain.domain}')" class="ssl-btn">
${domain.ssl_enabled ? 'Renew SSL' : 'Enable SSL'}