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Setup an NFS client provisioner in Kubernetes

Setup an NFS client provisioner in Kubernetes One of the most common needs when deploying Kubernetes is the ability to use shared storage. While there are several options available, one of the most commons and easier to setup is to use an NFS server.
This post will explain how to setup a dynamic NFS client provisioner on Kubernetes, relying on an existing NFS server on your systems.
Step 1. Setup an NFS server (sample for CentOS) First thing you will need, of course, is to have an NFS server. This can be easily achieved with some easy steps:

Install nfs package: yum install -y nfs-utils Enable and start nfs service and rpcbind:
systemctl enable rpcbind
systemctl enable nfs-server
systemctl start rpcbind
systemctl start nfs-server
Create the directory that will be shared by NFS, and change the permissions:
mkdir /var/nfsshare
chmod -R 755 /var/nfsshare
chown nfsnobody:nfsnobody /var/nfsshare
 Share the NFS directory over the network, creating the /etc/exports file:
vi /etc/exports
/var/nfsshare …

How to deploy TripleO Queens without external network

TripleO Queens has an interesting feature that is called 'composable networks'. It allows to deploy Openstack with the choice of networks that you want, depending on your environment. Please see:

By default, the following networks are defined:
StorageStorage ManagementInternal ApiTenantManagementExternal The external network allows to reach the endpoints externally, and also to define networks to reach the vms externally as well. But to have that, it is needed to have a network with external access, routable, on your lab. Not all labs have it, specially for CI environments, so it may be useful to deploy without it, and just have internal access to endpoints and vms. In this blogpost i'm just going to explain how to achieve it.

First make a copy of your original tripleo-heat-templates, to another directory /home/stack/working-templates, and edit the following files:

Build and use security hardened images with TripleO

Starting to apply since Pike Concept of security hardened images Normally the images used for overcloud deployment in TripleO are not security hardened. It means, the images lack all the extra security measures needed to accomplish with ANSSI requirements. These extra measures are needed to deploy TripleO in environments where security is an important feature.
The following recommendations are given to accomplish with security guidelines:
ensure that /tmp is mounted on a separate volume or partition, and that it is mounted with rw,nosuid,nodev,noexec,relatime flagsensure that /var, /var/log and /var/log/audit are mounted on separates volumes or partitions, and that are mounted with rw,relatime flags.ensure that /home is mounted on a separate partition or volume, and that it is mounted with rw,nodev,relatime flags.include extra kernel boot flag to enable auditing: add audit=1 to GRUB_CMDLINE_LINUX settingdisable kernel support for USB via bootloader configuration: add nousb to GRUB_CMD…