kubernetes-the-hard-way/scripts/run_command_on_nodes

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#!/usr/bin/env bash
SCRIPTS_DIR=$(dirname $0)
MY_COMMAND="$1"
NODE_NAMES_FILTER="$2"
NODE_NAMES="$($SCRIPTS_DIR/node_names $NODE_NAMES_FILTER)"
echo "Will run the following command on $(echo $NODE_NAMES | xargs):"
echo "$MY_COMMAND"
echo ""
echo ""
read -n 1 -s -r -p "Press any key to continue..."
echo ""
# remotely run the script
pushd $SCRIPTS_DIR &> /dev/null
tmp_file=$(mktemp)
cat << WRAPPER_EOF > $tmp_file
#!/usr/bin/env bash
$MY_COMMAND
WRAPPER_EOF
yes | ./run_script_on_nodes "$(basename $tmp_file)" "$NODE_NAMES_FILTER" &> /dev/null
rm -rf $tmp_file
popd &> /dev/null