RailsInstaller: Install Ruby on Rails in Minutes

Troubleshooting Common RailsInstaller Issues

Installing and configuring RailsInstaller can speed up getting a Ruby on Rails development environment running, but you may still encounter problems. This guide walks through the most common issues, how to diagnose them, and concise fixes.

1. Install fails or hangs

• Symptoms: Installer crashes, freezes, or exits with an error.
• Likely causes: Corrupt download, antivirus interference, insufficient permissions, missing dependencies.
• Fixes:
  1. Re-download the installer and verify file size/checksum if available.
  2. Temporarily disable antivirus/firewall and rerun installer.
  3. Run installer as administrator (Windows) or use sudo where required (macOS/Linux).
  4. Ensure required system components (e.g., Visual C++ Redistributable on Windows) are installed.

2. Ruby version mismatch or missing gems

• Symptoms: ruby -v shows unexpected version; gem install fails; bundle errors.
• Likely causes: Multiple Ruby installs, PATH ordering, or OS package manager Ruby conflicting.
• Fixes:
  1. Check ruby -v and which ruby (or where ruby on Windows).
  2. Ensure RailsInstaller’s Ruby directory appears first in PATH.
  3. Uninstall/confine other Ruby managers (rbenv, RVM) or explicitly use the desired Ruby binary.
  4. Run gem update –system, then gem install bundler and bundle install in project directory.

3. Gem native extensions fail to build

• Symptoms: Errors during gem install referencing mkmf, make, or missing headers.
• Likely causes: Missing build tools and header libraries.
• Fixes:
  1. Windows: Install the DevKit/MSYS2 toolchain that matches your Ruby version; run its setup.
  2. macOS: Install Xcode Command Line Tools: xcode-select –install.
  3. Linux: Install build-essential and library headers (e.g., sudo apt-get install build-essential libssl-dev libreadline-dev zlib1g-dev).
  4. Reinstall the gem after tools are present.

4. Database connection errors

• Symptoms: PG::ConnectionBad, Access denied for user, or cannot find sqlite3.
• Likely causes: Missing DB server, wrong credentials, or missing DB client libraries.
• Fixes:
  1. Ensure DB server is running (e.g., service postgresql start or start MySQL).
  2. Verify database.yml credentials and host/port.
  3. Install client libraries (e.g., libpq-dev for PostgreSQL) and then reinstall the corresponding gem (pg).
  4. For sqlite3, ensure sqlite3 is installed system-wide and the gem matches the sqlite3 version.

5. PATH and environment variable problems

• Symptoms: Rails commands not found, wrong gemset used, or commands resolve to unexpected binaries.
• Likely causes: PATH order incorrect, environment variables not applied.
• Fixes:
  1. Inspect PATH: echo $PATH (macOS/Linux) or echo %PATH% (Windows).
  2. Place RailsInstaller’s bin directories at the front of PATH.
  3. Restart terminal or log out/in after changing environment variables.
  4. On Windows, ensure .bat/.cmd wrappers are in PATH so commands like rails run.

6. Permission errors when creating files or running servers

• Symptoms: EACCES, permission denied when creating logs/tmp or binding to ports <1024.
• Likely causes: Running as a different user, attempting to bind privileged ports.
• Fixes:
  1. Adjust file permissions: `ch