revamp nixops structure(s)

nixops/bin/teardown.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+TOP="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/.."
+
+reboot=no
+case $1 in
+    --reboot) reboot=yes; shift ;;
+esac
+
+if [ $# != 1 ]; then
+    echo "usage: teardown.sh [--reboot] name"
+    exit 1
+fi
+
+d=$1
+tmp=$TOP/.$d.$$
+
+teardown () {
+    mkdir -p $tmp
+    cp -r $TOP/$d/* $tmp
+    sed -i '/k8s *= *{/,+1 s/enable *= *true/enable = false/' $tmp/cluster.nix
+    nixops modify -d $d $tmp
+    nixops deploy -d $d
+    [ $reboot = yes ] && nixops reboot -d $d
+    nixops ssh-for-each -d $d \
+        "rm -rf /var/run/kubernetes /var/lib/kubernetes /var/lib/etcd /var/lib/kubelet /var/lib/cfssl"
+    rm -rf $tmp
+}
+cat << EOF
+
+************************************************************************
+***                                                                  ***
+*** WARNING: This will irrevokably destroy the running cluster!      ***
+***                                                                  ***
+************************************************************************
+
+EOF
+
+echo "Are you sure you want to tear down $d? (YES/no)"
+read a
+case $a in
+    YES) teardown ;;
+    *) echo "Bailing out." ;;
+esac
+