Refresh /etc/hosts in VNC - reviewed

[oom.git] / kubernetes / portal / resources / scripts / update_hosts.sh

diff --git a/kubernetes/portal/resources/scripts/update_hosts.sh b/kubernetes/portal/resources/scripts/update_hosts.sh
new file mode 100644 (file)
index 0000000..cd38faf
--- /dev/null
+++ b/kubernetes/portal/resources/scripts/update_hosts.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+_SRC_HOST=$1
+_DST_HOST=$2
+_IP=`getent hosts ${_SRC_HOST}|cut -d' ' -f1`
+if [ -z ${_IP} ]; then
+  echo "Cannot retreive IP for host mapping ${_SRC_HOST} -> ${_DST_HOST}"
+  exit 1
+fi
+_REGEX=".*[[:blank:]]${_DST_HOST}$"
+if grep -c -e "${_REGEX}" /etc/hosts > /dev/null 2>&1 ; then
+  cp /etc/hosts /tmp/hosts
+  sed -i "s/${_REGEX}/${_IP} ${_DST_HOST}/g" /tmp/hosts
+  cp /tmp/hosts /etc/hosts
+else
+  echo "${_IP} ${_DST_HOST}" >> /etc/hosts
+fi