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chore: meaningful error message when passwordless sudo required on machine provisioning

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Pasha Sviderski
2025-08-05 18:56:14 +10:00
parent 8beb9e2679
commit 6cc0611d75
1 changed files with 20 additions and 0 deletions
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internal/cli/machine.go
+20
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@@ -46,6 +46,26 @@ func provisionMachine(ctx context.Context, exec sshexec.Executor, version string
return fmt.Errorf("run whoami: %w", err)
}
if user != "root" {
// 'sudo -n' is not used because it fails with 'sudo: a password is required' when the user has no password
// in /etc/shadow even though it may have valid sudo access.
out, err := exec.Run(ctx, "sudo true")
if err != nil {
if strings.Contains(out, "password is required") {
return fmt.Errorf(
"user '%[1]s' requires a password for sudo, but Uncloud needs passwordless sudo or root access "+
"to install and configure the uncloudd daemon on the remote machine.\n\n"+
"Possible solutions:\n"+
"1. Use root user or a user with passwordless sudo instead.\n"+
"2. Configure passwordless sudo for the user '%[1]s' by running on the remote machine:\n"+
" echo '%[1]s ALL=(ALL) NOPASSWD:ALL' | sudo tee /etc/sudoers.d/%[1]s",
user)
}
return fmt.Errorf("sudo command failed for user '%s': %w. "+
"Please ensure the user has sudo privileges or use root user instead", user, err)
}
}
cmd := installCmd(user, version)
fmt.Println("Downloading Uncloud install script:", installScriptURL)