Prepare, configure, and manage Firecracker microVMs in seconds!
virtualization
linux
microvm
firecracker
check for KVM support
+55
+1
Cargo.lock
+1
Cargo.lock
+1
crates/firecracker-up/Cargo.toml
+1
crates/firecracker-up/Cargo.toml
+29
crates/firecracker-up/src/command.rs
+29
crates/firecracker-up/src/command.rs
···
1
+
use anyhow::{anyhow, Context, Result};
2
+
use std::process::{Command, Output, Stdio};
3
+
4
+
pub fn run_command(command: &str, args: &[&str]) -> Result<Output> {
5
+
let mut cmd = Command::new(command);
6
+
7
+
let output = cmd
8
+
.args(args)
9
+
.stderr(Stdio::piped())
10
+
.output()
11
+
.with_context(|| format!("Failed to execute {}", command))?;
12
+
13
+
if !output.status.success() {
14
+
let stderr = String::from_utf8_lossy(&output.stderr);
15
+
let stdout = String::from_utf8_lossy(&output.stdout);
16
+
return Err(anyhow!(
17
+
"Command {} failed: {} {} {} {}",
18
+
command,
19
+
stderr,
20
+
stdout,
21
+
args.iter()
22
+
.map(|s| s.to_string())
23
+
.collect::<Vec<_>>()
24
+
.join(" "),
25
+
output.status.code().unwrap_or(-1),
26
+
));
27
+
}
28
+
Ok(output)
29
+
}
+24
crates/firecracker-up/src/main.rs
+24
crates/firecracker-up/src/main.rs
···
1
1
use std::thread;
2
2
3
3
use anyhow::Result;
4
+
use owo_colors::OwoColorize;
5
+
6
+
use crate::command::run_command;
7
+
8
+
pub mod command;
4
9
5
10
fn main() -> Result<()> {
11
+
check_kvm_support()?;
12
+
6
13
firecracker_process::start()?;
7
14
8
15
loop {
···
17
24
firecracker_vm::setup()?;
18
25
Ok(())
19
26
}
27
+
28
+
pub fn check_kvm_support() -> Result<()> {
29
+
print!("[+] Checking for kvm support... ");
30
+
31
+
if !run_command("sh", &["-c", "lsmod | grep kvm"])
32
+
.map(|output| output.status.success())
33
+
.unwrap_or(false)
34
+
{
35
+
return Err(anyhow::anyhow!(
36
+
"KVM is not available. Please ensure KVM is enabled in your system."
37
+
));
38
+
}
39
+
40
+
println!("{}", "[✓] OK".bright_green());
41
+
42
+
Ok(())
43
+
}