fix some bugs and mix other things

[automated-distro-installer] / fai-kexec

diff --git a/fai-kexec b/fai-kexec
index 5e10ac2d1000df9eebadd0bdd2661afe5afcf74b..ae59f7cb3d6d56da7d5f742385152860cee541be 100755 (executable)
--- a/fai-kexec
+++ b/fai-kexec
@@ -14,11 +14,28 @@
 # limitations under the License.
 
 
-# kexec to fai tftp server that pxe would normally point to
-
 set -eE -o pipefail
 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
+[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
+
+usage() {
+    cat <<'EOF'
+usage: $0 [-h|--help] [SERVER]
+Kexec this or a remote machine using host faiserver
+
+If SERVER argument, ssh to root@SERVER before doing kexec. This does
+what pxe would do, but skipping boot sequence up to and including the
+pxe dhcp.
+
+EOF
+    exit $1
+}
+case $1 in
+    -h|--help) usage ;;
+esac
+
+
 if [[ $1 ]]; then
     prefix="ssh root@$1"
 fi