Make changes

See salt/maintenance/README.md to configure maintenance.

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• Configure firewall
  • Open a port
  • Close a port
  • Troubleshoot
• Configure Apache
  • Allow HTTP/HTTPS traffic
  • Add sites
    • Add basic authentication
  • Acquire SSL certificates
    • Test
    • Troubleshoot
  • Enable Apache modules
• Configure PostgreSQL
  • Specify the version
  • Enable public access
  • Add service accounts
  • Add your configuration
  • Set up backups
    • Additional steps for replica servers
  • Set up replication
• Configure Python apps
  • Add basic configuration
  • Add configuration files
  • Configure Django
  • Configure uWSGI
  • Configure Apache
• Configure Elasticsearch
  • Check system configuration
  • Set swappiness value
  • Enable public access
    • Troubleshoot
• Configure rsyslog and logrotate
  • rsyslog
  • logrotate
• Remove Salt configuration
  • Delete a file
  • Delete a line from a file
  • Delete a user
  • Delete a cron job
  • Delete a service
  • Delete a package
  • Delete a firewall setting
  • Delete an Apache module
  • Delete a virtual host