Ubuntu下SystemTap无法运行：找不到合适的编译服务器

Let's break down what's happening here: Your Ubuntu kernel has enforced module signing (usually enabled via Secure Boot), which means any kernel module—including those generated by SystemTap—needs a valid signature to load. SystemTap automatically tries to use a compile server to handle this signing, but you don't have one running or configured yet.

Here are two reliable ways to fix this:

Option 1: Disable Secure Boot (Simplest, if allowed) #

If your system doesn't require Secure Boot for security compliance, this is the fastest fix:

• Reboot your machine and enter BIOS/UEFI settings (usually by pressing F2, Del, or Esc during boot)
• Locate the Secure Boot option and set it to Disabled
• Save changes and reboot. Now SystemTap can load unsigned modules directly, so you won't need a compile server anymore. Just re-run your script:

  ./biolatency-nd.stp
  

Option 2: Set Up a Local SystemTap Compile Server (For Secure Boot Enabled Systems) #

If you need to keep Secure Boot on, configure a local compile server to handle module signing:

1. Install the stap-server package:

   sudo apt update && sudo apt install stap-server
   

2. Start and enable the service to run on boot:

   sudo systemctl start stap-server
   sudo systemctl enable stap-server
   

3. Verify the server is running:

   sudo systemctl status stap-server
   

   You should see "active (running)" in the output.
4. Next, follow the detailed setup steps in /usr/share/doc/systemtap/README.Debian to configure module signing for the server. This includes generating a signing key, registering it with your kernel, and configuring the server to use the key.
5. Once configured, run your script with the local server explicitly specified:

   stap --use-server=localhost ./biolatency-nd.stp
   

Quick Troubleshooting #

• If the server isn't detected, double-check that the stap-server service is actually running with the systemctl status command above
• Test connectivity to the local server with:

  stap-server ping localhost
  

  This should return a success message if the server is reachable.

内容的提问来源于stack exchange，提问作者jackyard