Add nanoswitch and cluster testing
Adds nanoswitch and the `switched-multi2` launch target to launch two Smalltown instances on a switched
network and enroll them into a single cluster. Nanoswitch contains a Linux bridge and a minimal DHCP server
and connects to the two Smalltown instances over virtual Ethernet cables. Also moves out the DHCP client into
a package since nanoswitch needs it.
Test Plan:
Manually tested using `bazel run //:launch -- switched-multi2` and observing that the second VM
(whose serial port is mapped to stdout) prints that it is enrolled. Also validated by `bazel run //core/cmd/dbg -- kubectl get node -o wide` returning two ready nodes.
X-Origin-Diff: phab/D572
GitOrigin-RevId: 9f6e2b3d8268749dd81588205646ae3976ad14b3
diff --git a/core/cmd/launch/main.go b/core/cmd/launch/main.go
index 100d350..ff5c4d5 100644
--- a/core/cmd/launch/main.go
+++ b/core/cmd/launch/main.go
@@ -18,7 +18,7 @@
import (
"context"
- "fmt"
+ "log"
"os"
"os/signal"
"syscall"
@@ -38,6 +38,6 @@
if err == ctx.Err() {
return
}
- fmt.Printf("Failed to execute: %v\n", err)
+ log.Fatalf("Failed to execute: %v\n", err)
}
}