optimize size and time using "--no-cache-dir"

Using "--no-cache-dir" flag in pip install ,make sure dowloaded packages
by pip don't cached on system . This is a best practise which make sure
to fetch ftom repo instead of using local cached one . Further , in case
of Docker Containers , by restricing caching , we can reduce image size.
In term of stats , it depends upon the number of python packages
multiplied by their respective size . e.g for heavy packages with a lot
of dependencies it reduce a lot by don't caching pip packages.

Further , more detail information can be found at

https://medium.com/sciforce/strategies-of-docker-images-optimization-2ca9cc5719b6

Issue-ID: MULTICLOUD-1080

Signed-off-by: Pratik Raj <rajpratik71@gmail.com>
Change-Id: Ib79fae7e69eb669e39bc3eb52373668367460ba2

1 files changed, 4 insertions, 4 deletions

diff --git a/kud/hosting_providers/vagrant/installer.sh b/kud/hosting_providers/vagrant/installer.sh
index 7b8b28d4..27ab7fc1 100755
--- a/kud/hosting_providers/vagrant/installer.sh
+++ b/kud/hosting_providers/vagrant/installer.sh
@@ -41,7 +41,7 @@ function _install_go {
 # _install_pip() - Install Python Package Manager
 function _install_pip {
     if $(pip --version &>/dev/null); then
-        sudo -E pip install --upgrade pip
+        sudo -E pip install --no-cache-dir --upgrade pip
     else
         sudo apt-get install -y python-dev
         curl -sL https://bootstrap.pypa.io/get-pip.py | sudo python
@@ -56,7 +56,7 @@ function _install_ansible {
     _install_pip
     local version=$(grep "ansible_version" ${kud_playbooks}/kud-vars.yml | awk -F ': ' '{print $2}')
     sudo mkdir -p /etc/ansible/
-    sudo -E pip install ansible==$version
+    sudo -E pip install --no-cache-dir ansible==$version
 }
 
 # _install_docker() - Download and install docker-engine
@@ -123,7 +123,7 @@ function install_k8s {
     rm $tarball
 
     pushd $dest_folder/kubespray-$version/
-    sudo -E pip install -r ./requirements.txt
+    sudo -E pip install --no-cache-dir -r ./requirements.txt
     make mitogen
     popd
     rm -f $kud_inventory_folder/group_vars/all.yml 2> /dev/null
@@ -175,7 +175,7 @@ function install_plugin {
     echo "Installing multicloud/k8s plugin"
     _install_go
     _install_docker
-    sudo -E pip install docker-compose
+    sudo -E pip install --no-cache-dir docker-compose
 
     sudo mkdir -p /opt/{kubeconfig,consul/config}
     sudo cp $HOME/.kube/config /opt/kubeconfig/kud