Traditionally we have shared storage, across the nodes using NFS/iSCSCI at the operating system level. Kubernetes comes with concept of PV and PVC, lets discuss this briefly before we start deploying NFS and associate with our Kubernetes cluster. Containers are immutable , when container shutdown all the data is lost. This behaviour may not be suitable for some applications like database where application needs to share the data with other…
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Deploying And Configuring iSCSI Target
In this post, we will deploy and configure an iSCSI Target Server on CentOS 7.9, then we will attach this storage to Kubernetes Cluster in Kubernetes section. My environment: I am running Centos 7.9 VM on a ESXI 6.5 platform, running on HP DL380 server. Other VM’s that are cohabitating with the scuzzy VM, are 3 Kubernetes worker nodes,1 Kubernetes Master node, 1 Ansible Master node, Eveng and a…
Working With Linux, Basic Commands
Recently I was working on a Nokia’s LTE & UMTS Automated Operations and Recovery (AOR), a product which simplifies service operations by automating network supervisory activities . I had a team from diverse background like transmission,RF,Core,Networks,Java developers,Database and our task was to test Linux based opensource application which obviously needed good knowledge of Linux CLI. Linux Command-Line provides a richer experience in terms of speed and expressiveness. Linux Operating system…
Working With Kubernetes
Kubernetes is an open-source platform that helps you deploy, scale, and manage resources across multiple containers. A Kubernetes cluster would generally have a master node and several worker-nodes or Minions. The worker-nodes are then managed from the master node, thus ensuring that the cluster is managed from a central point. Master Node API Server – It provides kubernetes API using Jason / Yaml over http, states of API objects are…
openstack-neutron-networking_part2
Neutron is a an Openstack module which takes care of networking using the Plug-ins.It consists of the following Logical Elements depicted below in Figure 01. We will use the below figures 01 and 02 as reference through out this blog. Figure01 Figure02 1) Neutron Server ( API Server): It receives the API calls and directs them to Neutron Plugins.Neutron-server is basically a Python daemon that provides the the…
Troubleshooting_Openstack_Part1
My Use Case: Troubleshooting “No valid host was found” Error: Failed to perform requested operation on instance “Waghoba”, the instance has an error status: Please try again later [Error: No valid host was found. There are not enough hosts available.]. Troubleshooting Openstack is not a easy Job. Logs, logs and more logs , all you need to look at those voluminous log at different locations. Typically when encountered with “No Valid Host Found ” error you need to check the filters. In this example the error was caused due to Insufficient Disk ” space or inappropriate disk partition. Lets see how I…
Beryllium ODL SDN Controller Installation
Let us install the Beryllium ODL SDN Controller . In my SDN lab setup I have 3 Dell servers , One Vcenter and a Windows Domain controller ADS. There are 5virtual machines spinning 3 Controllers (Brocade , HP VAN and Opendaylight) and 2 Openflow simulators Mininet and Estinet. We start installing the Beryllium ODL SDN Controller on server Saraswati having IP address 192.168.0.75. The installation has 3…
Implementing Brocade OF/Netconf Vyatta Router
In this episode I am installing the Vrouter as a virtual machine on my ESXI server 192.168.0.25. We will configured this router to communicate with the Controller over the South bound interface using Netconf protocol. Lets go ahead and create a Virtual machined for the Netconf complaint router Activating the license [edit] vyatta@vyatta# set system name-server…
Soft-switch Nexus 1000V Deployment
VMware by default comes with “vSwitch0”, the standard vSwitch which is at host level providing essential networking features such as 802.1Q VLAN tagging, egress traffic shaping, basic security, and NIC teaming required for the virtualisation setup. Then comes a vDS (vSphere Distributed Switch) which essentially operates at Data center level making configuration of multiple hosts easies to manage with added advantages like ingress/egress traffic shaping, PVLANs (Private VLANs), and network…
Implementing Brocade SDN Controller (Vyatta)
Hello Folks, In this blog I am sharing the implementation of Brocade SDN Controller. It is a software-defined networking (SDN) controller that is based on the OpenDaylight project. This controller has 2 section the Base controller and the Extension. I have covered the theory party in another blog and this blog is focused on the installation of the controller. Brocade SDN Controller needs specific hardware and software, before you install…