fixes mostly for bootstrap vol, better docs

[automated-distro-installer] / fai-kexec

diff --git a/fai-kexec b/fai-kexec
index 5e10ac2d1000df9eebadd0bdd2661afe5afcf74b..dbf003be355563b8188b02240e7bae7f61f681f8 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
 
+
+usage() {
+    cat <<'EOF'
+usage: $0 [-h|--help] [SERVER]
+kexec to SERVER (faiserver by default), pxe boot from it's tftp server
+
+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