An article about TiDB disaster recovery

1, Background High availability is another major feature of TiDB. All three components of TiDB/TiKV/PD can tolerate partial instance failure without affecting the availability of the whole cluster. The following describes the availability of these three components, the consequences of a single instance failure, and how to recover. TiDB T ...

Posted by billynastie on Thu, 21 May 2020 06:23:27 +0200

Build an internal Ansible automated management platform from scratch - Chapter 1 (Api)

Build an internal Ansible automated management platform from scratch - Chapter 1 1. Background; With the rapid technological iteration of lower and middle-level enterprise technologies and the popularity of micro-service distributed architecture, it is difficult for traditional operation and maintenance systems to initialize systems, deploy e ...

Posted by s0me0ne on Sun, 05 Apr 2020 23:14:12 +0200

Ansible ad hoc and common modules

Ansible execution result information - color description; ansible ad hoc description; how to view help documents and common module details Host planning   Add user account Explain: 1. Login account used by operation and maintenance personnel; 2. All businesses are placed in the "home directory of yun users" under / app / to avoid m ...

Posted by peteraub on Thu, 19 Mar 2020 11:01:10 +0100

k8s-1.15 deploy kube-prometheus-0.3.0

Article directory Deploy Kube Prometheus Kube Prometheus project composition Submission of resources Modify grafana Create directory on 32.94, create pv, pvc Create svc of grafana MySQL Create cm for grafana.ini Modify the configuration in grafana deployment, add the operation of mounting configma ...

Posted by noisenet on Wed, 11 Mar 2020 11:41:02 +0100

Linux file system and LVM

1, Manage file system 1. Creating an EXT4 file system The mkfs (Make Filesystem) command is used to create a file system (format). The basic syntax format of the mkfs command is as follows: 1) mkfs application example Format the / dev/sdb1 partition as an EXT4 file system. <! -- self planning zone -- > [root@centos01 ~]# fdisk / ...

Posted by Namadoor on Mon, 17 Feb 2020 08:35:31 +0100

Basic knowledge of ansible automatic operation and maintenance and cloud service

ansible is relatively simple. playbook is used to implement more complex tasks, while Roles is used to implement more complex tasks. ansible uses modular development, which is equivalent to a collection of command parameters. https://baike.baidu.com/item/%E4%BA%91%E6%9C%8D%E5%8A%A1/7843499?fr=aladdin Se ...

Posted by hanhao on Thu, 30 Jan 2020 05:07:19 +0100

Anible Notes - Batch Initialization Server

The initial configuration goals to be achieved in this paper are as follows: ansible configures ssh secret login; ansible remote configuration host name; ansible controls remote hosts to add DNS resolution records to each other; ansible configures the yum mirror source on the remote host and installs some software; ansible configures time sy ...

Posted by nigelbashford on Sat, 25 Jan 2020 07:29:46 +0100

Ansible automation deployment detailed tutorial

1, Ansible automatic deployment K8S cluster 1.1 introduction to ansible Ansible is an it automation tool. It can configure systems, deploy software, and coordinate more advanced IT tasks, such as continuous deployment and rolling update. Ansible is suitable for managing enterprise IT infrastructure ...

Posted by m@ndio on Wed, 22 Jan 2020 08:09:27 +0100

[provide feasibility Script] RHEL/CentOS 7 multi node SSH password free login

Experiment Description: In automatic deployment, other SSH machines will often operate. However, each password authentication is very annoying, especially for a long password, so SSH password free login is essential; When there are many machines, Ansible is often used to distribute and execute SSH password free login scripts, so that each machi ...

Posted by Ree on Thu, 02 Jan 2020 19:23:57 +0100

Kubernetes Advanced Node Auto Expansion/Scaling

Kubernetes Advanced Node Auto Expansion/Scaling Catalog: 1. Cluster AutoScaler cloud vendor expansion/scaling 2. Ansible one-click auto-expanding Node 1,Cluster AutoScalerExtension: Cluster AutoScaler periodically detects whether there are sufficient resources to schedule the newly created Pod and calls Cloud Provider to cr ...

Posted by balsdorf on Wed, 11 Dec 2019 22:32:16 +0100