add script to sync swarm files

bin/syncFilesToAllSwarmNodes.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+
+#ensure realpath is avail
+command -v realpath >/dev/null 2>&1 || { echo >&2 "ERROR: realpath is required, but doesn't appear to be installed.  Aborting..."; exit 1; }
+
+
+IDfile=`realpath $4`
+
+
+DisplayUsage()
+{
+  echo "Usage:"
+  echo "syncFilesToAllNodes <local config directory> <remote sub-directory name> <remote username> <filename of remote user's private key> | --help" >&2
+  echo ""
+}
+
+#ensure docker is avail
+command -v docker >/dev/null 2>&1 || { echo >&2 "ERROR: docker is required, but doesn't appear to be installed.  Aborting..."; exit 1; }
+
+
+#check if running on a manager node
+docker node ls > /dev/null 2>&1
+if [ $? = 1 ]; then
+ echo "This script must be run from a manager node. You do not appear to be on a manager node. Terminating."
+ exit 1
+fi
+
+
+if [ $1 = '--help' ]; then
+  DisplayUsage
+  exit 1
+fi
+
+
+#sanity checks
+if [[ $# -ne 4 ]]; then
+  DisplayUsage
+  exit 1
+fi
+
+#more checks
+if ! [ -e "$1" ]; then
+  echo "ERROR: $1 not found, terminating." >&2
+  echo ""
+  exit 1
+fi
+if ! [ -d "$1" ]; then
+  echo "ERROR: $1 is not a directory, terminating." >&2
+  echo ""
+  exit 1
+fi
+if ! [ -e "$4" ]; then
+  echo "ERROR: $4 not found, terminating." >&2
+  echo ""
+  exit 1
+fi
+
+
+#cd to specified dir (so that scp -r works as intended)
+pushd $1 > /dev/null
+
+
+#check if specified config dir contains (some of) the needed sub-directories
+if ! [ -d "$PWD/config/shib-idp/conf" ]; then
+  echo "ERROR: the specified directory does not appear to contain a valid IdP config structure, terminating."
+  exit 1
+fi
+if ! [ -d "$PWD/config/tomcat" ]; then
+  echo "ERROR: the specified directory does not appear to contain a valid Tomcat config, terminating."
+  exit 1
+fi
+
+
+# transfer files
+#
+# get list of other nodes in the swarm
+ for n in `docker node ls | sed -n '1!p' | cut -f 1 -d ' '`; do
+  #echo $n
+  s=$(docker node inspect --pretty $n | grep Address | cut -f 2 -d ':' | sed -n '2!p')
+  thisNode=${s//[[:blank:]]/}
+  echo "Connecting to ${thisNode} (`dig +noall +answer -x ${thisNode} | awk '{ print $(NF) }'`)....`scp -q -i ${IDfile} -r . $3@${thisNode}:/home/$3/$2 > /dev/null 2>&1`OK"
+ done
+
+
+#return to previous directory
+popd > /dev/null