ZFS creates raidz1(RAID5)

1, Introduction to VDEVs First, we need to understand the concept of virtual devices or VDEVs. If you are already familiar with raid, the concept is not new to you, although you may not call it "VDEVs.". Basically, we have a metadevice that represents one or more physical devices. In Linux software RAID, you may have a "/ dev/md ...

Posted on Fri, 17 Jan 2020 04:57:06 -0500 by jib0

Escape analysis in Golang

It has also been one or two years since I used Golang to develop my daily cmdline program. Previously, as an Ops, I used Golang to develop some common tools to implement various routine operations and daily operation and maintenance management of the production environment, but I didn't know much about the details of the whole Golang language. ...

Posted on Thu, 16 Jan 2020 22:09:48 -0500 by mobilekid

OSPF area division (special area)

1, Topology display - Huawei OSPF area division Equipment required: 9 routers, 5 pcs PS: this topology is not applicable to all physical environments The purpose of the experiment is to configure the relevant areas according to the topology map and realize the interconnection of the whole network 2, What is OSPF OSPF(SPF) is a routing proto ...

Posted on Sun, 12 Jan 2020 08:34:37 -0500 by DaVuLf

Inside the Gin framework

Introduction to Gin framework Gin It is a web framework written in Go (Golang). It's a kind of martini But the API framework with better performance is different from that led by Xie da Beego The web framework, which is more like the Django framework in Python language, contains various components needed to develop a web program. If you're a pe ...

Posted on Sat, 11 Jan 2020 07:38:02 -0500 by readourlines

kubeadm deployment k8s

The new version of kubeadm has changed some parameters, the installation method has changed, you can refer to the new version installation method [kubernetes] name=Kubernetes baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/ enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/y ...

Posted on Fri, 10 Jan 2020 13:55:58 -0500 by basim

k8s deployment stateful service zookeeper example

Without considering the configuration file first: apiVersion: apps/v1 kind: StatefulSet #####A problem with fixed hostname and stateful service is that if the pod is not in running state, the hostname cannot be resolved, which constitutes a dead cycle. When I sed to replace the hostname, because the pod is not in running state, she can only ...

Posted on Fri, 10 Jan 2020 09:14:10 -0500 by lunny

Kubernetes 1.17.0 installation tutorial, configuring multi node cluster based on kubeadm

  this paper introduces the installation of Kubernetes cluster, one Master and multiple nodes based on kubeadm under Centos7. Software introduction Docker version 19.03.5, build 633a0ea Kubernetes version v1.17.0 CentOS-7-x86_64 Kernel version 3.10.0-1062.el7.x86_64 CPU The number of cores should be greater than 2, and the memory shou ...

Posted on Fri, 10 Jan 2020 04:01:32 -0500 by pl_towers

Kubeflow series: Solve one-click installation of kubeflow based on Ali cloud mirror in China

Environmental preparation kubeflow is very demanding for the environment. See the official requirements:at least one worker node with a minimum of: 4 CPU 50 GB storage 12 GB memory Of course, you can install if you don't, but you will have resource problems later on because this is the full package. A kubernetes cluster is already installed, ...

Posted on Sat, 04 Jan 2020 14:53:15 -0500 by er0x

Kubeflow series: analysis of kubeflow components

As a big gift package of machine learning based on cloud native, kubeflow can be used as a good example of cloud native learning. At the same time, the ecology based on k8s is bound to be the direction of future development. I believe that the follow-up Mxnet, paddle and other types of technical frameworks will also run on the ecology of kuber ...

Posted on Fri, 03 Jan 2020 08:53:05 -0500 by lucidpc

Most reliable - Linux+Mysql Green Install-Free, Offline Installation

Having worked for a few years, practitioners have almost had enough experience. To run our programs on customers'non-clean Linux, you may often encounter problems where the old version of mysql cannot be uninstalled (other people have data to run again) and the new version can't install such a hot hand, so our offline install-free version will ...

Posted on Thu, 02 Jan 2020 10:35:22 -0500 by bagsobrands