Add script to upgrade worker from 2.0 to 3.0.

Change-Id: I3156d7e2ee13505baa4ca40b5403a9d59cfc6cda

bin/upgrade_worker_V2toV3.sh

@@ -0,0 +1,114 @@
+#!/bin/bash
+##############################################################################
+# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##############################################################################
+
+
+##############################################################################
+# DESCRIPTION
+#   This script is used to manually upgrade a worker node running a 2.0
+#   version of Libra to the 3.0 version. This is specifically targeted to
+#   Ubuntu nodes, but may work on other distributions, though that is
+#   untested. It makes some assumptions about the current setup.
+#
+#   This script is designed to be safe to run multiple times, in case an
+#   error is encountered and it must be run again.
+#
+# EXIT VALUES
+#   0 on success, 1 on error
+##############################################################################
+
+if [ $USER != "root" ]
+then
+  echo "Must be run as root user."
+  exit 1
+fi
+
+LOG="/tmp/update_node.log"
+
+if [ -e ${LOG} ]
+then
+  rm -f ${LOG}
+fi
+
+#################################################
+# Update sudo privs by inserting '/usr/bin/chown'
+#################################################
+file="/etc/sudoers"
+echo "Updating SUDO file $file" | tee -a ${LOG}
+
+sed -i.bak -e '/^%haproxy/ c\
+%haproxy ALL = NOPASSWD: /usr/sbin/service, /bin/cp, /bin/mv, /bin/rm, /bin/chown' ${file}
+if [ $? -ne 0 ]
+then
+  echo "Edit of ${file} failed." | tee -a ${LOG}
+  exit 1
+fi
+
+if [ -e ${file}.bak ]
+then
+  rm ${file}.bak
+fi
+
+#########################
+# Chown on haproxy socket
+#########################
+haproxysock="/var/run/haproxy-stats.socket"
+echo "Doing chown of haproxy socket ${haproxysock}" | tee -a ${LOG}
+
+if [ -e ${haproxysock} ]
+then
+  chown haproxy:haproxy ${haproxysock}
+  if  [ $? -ne 0 ]
+  then
+    echo "chown on ${haproxysock} failed." | tee -a ${LOG}
+    exit 1
+  fi
+fi
+
+
+##########################
+# Edit current haproxy.cfg
+##########################
+haproxycfg="/etc/haproxy/haproxy.cfg"
+echo "Updating HAProxy config file ${haproxycfg}" | tee -a ${LOG}
+
+if [ -e ${haproxycfg} ]
+then
+  sed -i.bak -e '/stats socket/ c\
+    stats socket /var/run/haproxy-stats.socket user haproxy group haproxy mode operator' ${haproxycfg}
+  if  [ $? -ne 0 ]
+  then
+    echo "Editing ${haproxycfg} failed." | tee -a ${LOG}
+    exit 1
+  fi
+fi
+
+if [ -e ${haproxycfg}.bak ]
+then
+  rm -f ${haproxycfg}.bak
+fi
+
+
+#################
+# Restart haproxy
+#################
+echo "Restarting haproxy" | tee -a ${LOG}
+service haproxy restart 2>&1 >> ${LOG}
+if [ $? -ne 0 ]; then echo "haproxy restart failed" | tee -a ${LOG}; exit 1; fi
+
+
+exit 0