@@ -63,7 +63,7 @@ function get_extra_file {

     if [[ $file_url != file* ]]; then

         # If the file isn't cache, download it

         if [[ ! -f $FILES/$file_name ]]; then

-            wget --progress=dot:giga -c $file_url -O $FILES/$file_name

+            wget --progress=dot:giga -t 2 -c $file_url -O $FILES/$file_name

             if [[ $? -ne 0 ]]; then

                 die "$file_url could not be downloaded"

             fi

@@ -98,8 +98,8 @@ function install_etcd3 {

     etcd_file="$(get_extra_file $ETCD_DOWNLOAD_LOCATION)"

     if [ ! -f "$FILES/etcd-$ETCD_VERSION-linux-$ETCD_ARCH/etcd" ]; then

         echo "${ETCD_SHA256} $etcd_file" > $FILES/etcd.sha256sum

-        # NOTE(sdague): this should go fatal if this fails

-        sha256sum -c $FILES/etcd.sha256sum

+        # NOTE(yuanke wei): rm the damaged file when checksum fails

+        sha256sum -c $FILES/etcd.sha256sum || (sudo rm -f $etcd_file; exit 1)

         tar xzvf $etcd_file -C $FILES

         sudo cp $FILES/$ETCD_NAME/etcd $ETCD_BIN_DIR/etcd