bin/switch_wfs_os: Adding feature to switch the OS on the nodes. This requires for the hostnames to resolve and the user wfs being able to sudo without password.

1 files changed, 17 insertions, 3 deletions

diff --git a/bin/switch_wfs_os b/bin/switch_wfs_os
index f03e91b..c941a4c 100755
--- a/bin/switch_wfs_os
+++ b/bin/switch_wfs_os
@@ -18,12 +18,15 @@ reboot_cmd=""
 
 hostnames_arch=( "wfs-master" "wfs-node1" "wfs-node2" )
 hostnames_ubuntu=( "wfs" "n101" "n102" )
+host=$(hostname)
 
 if [ $UID -ne 0 ]; then
   echo "You need to be root or call this script with sudo to do this."
   exit 1
 fi
 
+echo "Host: $host."
+
 if [ -f /etc/arch-release ]; then
   os_current=$os_new
   syslinux_location=$syslinux_location_arch
@@ -44,9 +47,14 @@ else
 fi
 
 if [ "$os_set" == "${os_new}" ] && [ "$os_current" == "${os_new}" ]; then
-  if [[ " ${hostnames_arch[@]} " =~ " $(hostname) " ]]; then
+  if [[ " ${hostnames_arch[@]} " =~ " $host " ]]; then
     echo "Switching to: $os_old"
     sed -i 's/^DEFAULT .*/DEFAULT '${os_old}'/' $syslinux_location
+    echo "Calling script on nodes:"
+    if [[ "${hostnames_arch[0]}" == "$host" ]]; then
+      ssh -t wfs${hostnames_arch[1]} "/usr/bin/sudo bin/$(basename $0)"
+      ssh -t wfs${hostnames_arch[2]} "/usr/bin/sudo bin/$(basename $0)"
+    fi
   else
     echo "Error: Script is not supposed to be running on this host!"
     echo "$(hostname) is not one of the following: ${hostnames_arch[@]}"
@@ -54,12 +62,17 @@ if [ "$os_set" == "${os_new}" ] && [ "$os_current" == "${os_new}" ]; then
     exit 1
   fi
 elif [ "$os_set" == "${os_old}" ] && [ "$os_current" == "${os_old}" ]; then
-  if [[ " ${hostnames_ubuntu[@]} " =~ " $(hostname) " ]]; then
+  if [[ " ${hostnames_ubuntu[@]} " =~ " $host " ]]; then
     echo "Switching to: $os_new"
     sed -i 's/^DEFAULT .*/DEFAULT '${os_new}'/' $syslinux_location
+    echo "Calling script on nodes:"
+    if [[ "${hostnames_ubuntu[0]}" == "$host" ]]; then
+      ssh -t wfs${hostnames_ubuntu[1]} "/usr/bin/sudo /usr/local/bin/$(basename $0)"
+      ssh -t wfs${hostnames_ubuntu[2]} "/usr/bin/sudo /usr/local/bin/$(basename $0)"
+    fi
   else
     echo "Error: Script is not supposed to be running on this host!"
-    echo "$(hostname) is not one of the following: ${hostnames_ubuntu[@]}"
+    echo "$host is not one of the following: ${hostnames_ubuntu[@]}"
     echo "Exiting."
     exit 1
   fi
@@ -70,6 +83,7 @@ else
   exit 1
 fi
 
+
 echo "Rebooting."
 $reboot_cmd