02 Ceph cluster planning and deployment of mimic

Reference connection:< https://docs.ceph.com/docs/master/ 2.1 cluster planning At least three Centos7 system virtual machines are used to deploy Ceph cluster. Hardware configuration: 2C4G. In addition, each machine should be equipped with at least three hard disks (5g for each disk) HOST IP Service Mark cephmanager01 public network:1 ...

Posted by BenInBlack on Tue, 30 Jun 2020 00:50:02 -0700

ftp upload tool download, ftp upload tool download tutorial, how to regularly back up files to ftp server?

Introduction to ftp transmission tools iis7 service management tool is a powerful FTP software with excellent interactive interface and powerful functions. It supports FTP functions such as regular upload and download, regular backup, automatic update, batch upload and download, FTP multi site management, online editing, etc. At the same time, ...

Posted by genix2011 on Tue, 23 Jun 2020 20:56:08 -0700

Open VPN is easy to help you realize!

preface: In view of the need for home-based work during the epidemic, remote work is necessary. At present, the simplest way is to realize it through the direct port mapping of the company's route, but there are inevitably security risks, For this reason, the editor temporarily decided to build openvpn to realize this function. Speaking of ope ...

Posted by danwatt on Wed, 03 Jun 2020 22:06:39 -0700

Introduction to Docker foundation of kubernetes

Getting started with Docker Definition of container Stand alone processes running in user space Isolated from other user space programs A container runs in a separate user space At the bottom is a separate kernel space History of development FreeBSD jail, 2000 Linux VServer ,2001 CGroups NameSpace LXC Docker ,2010 libcontainer runC ...

Posted by fqservers on Mon, 01 Jun 2020 07:30:11 -0700

ZABBIX4.0 upgrade 5.0 & ES6.1 upgrade 7.0

Upgrade plan Scope of influence: During the upgrade, the existing system will not be affected, and the system will maintain normal operation. After the upgrade, the availability test will be conducted for a period of time, and the monitoring on production will be replaced after the system is stable. Upgrade method: This upgrade adopts the blue ...

Posted by koolswans on Sun, 31 May 2020 10:01:07 -0700

Let's Encrypt configure universal domain name certificate

Recently, more than 10 secondary domain names of individuals need to issue certificates. Let's Encrypt provides free SSL certificates with a term of three months. When they expire, they need renew. The official also provides certbot, a tool for automatic renew. Here, we record the general certificate that uses Let's Encrypt to generate t ...

Posted by iRock on Fri, 29 May 2020 00:36:59 -0700

Experiment of DHCP auto acquiring ip address

1: Experimental environment1.1: Huawei ensp software1.2: PC, router and switchPC in initialization state and router and switch in initialization state2: Experimental process2.1: equipment configurationIn the ensp, the PC, router and switch are made into a topological diagram according to the diagram.2.2 configure SW1 switch [SW1]vlan batch 1 ...

Posted by themaxx113 on Thu, 28 May 2020 07:12:02 -0700

Grafana+Prometheus monitoring Linux server performance

Use Grafana and Prometheus to monitor the performance of Linux server, mainly through node_ The exporter monitors, such as CPU, memory, disk, etc. Prometheus collects data from remote machines through HTTP protocol and stores Prometheus local timing database. Install startup node_exporterNode needs to be installed on the monitored server_ exp ...

Posted by duankr on Tue, 26 May 2020 19:20:35 -0700

Introduction to using MySQL's own tools

In MySQL, there are many powerful tools, such as mysql, mysqladmin, mysqldump, etc.1. mysql commandThe Mysql command is the most common command tool used to provide a command line interface for users to operate and manage MySQL servers.You can see how it's used in more detail through mysql --help.1) Grammar used for -e, -u, -p, -h, -P, and so ...

Posted by Spudgun on Tue, 26 May 2020 10:54:08 -0700

ELK 7.X Use kiana's built-in analysis module to display icon problem records

Built a set of elk by myself 7.x Version environment found that using filebeat to collect nginx or apapche could not customize the directory log directory. If you customize the log directory, it would not be segmented. If you use the default log location, it would be segmented The solution is hereby recorded Default load path [root@kangcw e ...

Posted by phithe on Mon, 18 May 2020 09:03:04 -0700