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IT technical memo of networking

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Installing Praeco (ElastAlert GUI) into Kubernetes with Helm (Beta)

I created Helm Chart of Praeco (ElastAlert GUI) . Praeco is Web GUI for ElastAlert. github.com Beta Release This is my first Helm Chart and has not been put into production yet, and onl has been tested in k3s local Kubernetes environment. …

Checking state of NAT connection on iptables (AWS NAT instance, etc.)

Sometimes a NAT machine is created by iptables on Linux, such as an AWS NAT instance. If you are a network engineer who has experience in operating network devices such as routers and FWs, you will often want to check the connection status…

Chaos Engineering in BOSH with Turbulence

On the 24th day of Cloud Foundry Advent Calender 2018 I will implement chaos engineering which is introduced by advanced companies and services. If it is an environment constructed by BOSH, such as Cloud Foundry and Kubernetes, it can be i…

BOSH-Lite in VirtualBox with Bridged Adapter for remote access

On the 23rd day of Cloud Foundry Advent Calender 2018 Procedures for building BOSH-Lite in the local environment with VirtualBox are explained in some articles. In these, as described in the BOSH Official, you have to manage and access fro…

Create MACVLAN (802.1Q VLAN Tag) network with Docker-Compose

In this article I connected the Docker container with an external network 802.1Q VLAN Tag. en-designetwork.hatenablog.com This time with define as Docker-Compose file to make it easier to operate. If I make it further, I think that network…

Connecting the Docker container to the external network via VLAN Tag

I am considering a system that utilizes the Docker container for tests such as network communication and route confirmation. It is inefficient to prepare a large number of PCs for testing, so we would like to utilize a lightweight and spee…

Gem, Bundle installation fails due to setting error in Proxy environment

For package installation in the Proxy environment, it is necessary to designate the proxy server by environment variables and so on. Similarly for Gem and Bundler, setting of environment variables http_proxy is required. During constructio…

Install BOSH on OpenStack

Basically install BOSH on OpenStack as described here. https://bosh.io/docs/init-openstack.html Although it is possible to work with CentOS that is used as a host of OpenStack, in my environment using PackStack, did not work well because o…

(Queens)Build practical standalone OpenStack verification environment with PackStack

Since OpenStack Queens has been released, we verify from installation to initial use. Using PackStack, which can easily build OpenStack environment, build a practical OpenStack verification environment with a little customization. OpenStac…

SSH key pair is not imported in OpenStack external network diagram

When building OpenStack for verification and deploying CirrOS, the SSH key pair was not imported, and an issue occurred that CANNOT login to the instance by the SSH private-public key. OS is similar for CirrOS and Debian. (Switch to passwo…

ESXi hosting diagram with Home Lab and VyOS

My colleague said, "I want to study servers at home, but there is only an old PC (32 bit) and I can not build ESXi." In order to provide a verification environment, I built ESXi hosting environment in my home laboratory. I am using ESXi v6…

BIG-IP VE cannot be deployed to ESXi6.5 by postNFCData failed

I attempted to deploy F5 BIG-IP VE (Virtual Edition) to VMware ESXi 6.5 for evaluation, but an error occurred and the deployment failed. As a result, ALL, LTM’s OVA image could not be deployed, and deployment succeeded with 1 SLOT model. E…

Two pairs of RAID1 with 4HDDs and mount to ESXi (PowerEdge T110 II PERC H200A)

Add HDD to Dell PowerEdge T110 II used as home server. The existing DISK uses the initial installed RAID controller PERC H200A and has a RAID1 configuration. Since up to four HDDs can be connected to the controller, the remaining two are a…

Apply VIB Patch from ESXi6.5 Web Client

VMware releases patches from time to time within each major version. Conventionally, in a standalone environment without vCenter, it was necessary to install VIB (VMware Infrastructure Bundle) with esxcli. However, since ESXi 6.5 has WebGU…

Install CentOS 7.3 on ESXi 6.5 (VM console problem??)

Install CeontOS 7.3 on VMware vSphere ESXi 6.5. Use the free (Essential) version of ESXi. Unfortunately, since vCenter can not be used at no charge, it is a standalone configuration. For the guest OS use the Linux distribution CentOS. Sinc…

Can I use vCenter Server for free? I would like to have a cluster at home ESXi

(This article is information as of December 2016) Since I purchase additional home server and two ESXi will be configured, I considered installing vCenter Server. Basically, for verification purposes as a home lab, I am considering using i…

Nest virtualization failed with VT-x is not available error

VMware ESXi (vSphere) is not officially supported, but you can use nested virtualization for verification. Using this, I thought of installing Ubuntu (Linux) as a guest OS of ESXi, and using VirtualBox within it. Eventually I wanted to use…

PCF Dev(Cloud Foundry) install to Home LinuxVM

Cloud Foundry has a wide market share as PaaS infrastructure software. Pivotal Cloud Foudry, one of its commercial distributions, is also widely used in commercial services. Cloud Foundry is composed of many components and requires a large…


This Blog is English Version of my JP's.

Sorry if my English sentences are incorrect.

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