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To be perfected... Articles Catalogue Experimental environment pacemaker+corosync for high availability Deployment of server1 and server4 host mfs master Serr1 and server4 configure highly available yum sources Install pacemaker+corosync on server ...

Introduction of Saltstack Function Module 1. Introduction to salt-ssh Sal-ssh can run independently without minion, and use sshpass to interact with passwords, but it works in serial mode, resulting in a significant performance degradation. ...

Default configuration issues When SSH connects to a remote host, the host's public key is checked. If the host is the first time, a summary of the host's public key will be displayed, prompting the user whether to trust the host: The authenticity of host '192.168.0.110 (192.168.0.110)' can't be established. RSA key fingerprint is a3:ca:ad:95:a ...

Posgres-xl is a good thing? Why? Posgres-xl is based on postgresql database. Posgres can hoist many databases. It can do oltp, against mysql, mysql has no analysis function function It can make oltp, counterbalance oracle, oracle ecology is weak, can not be real-time It supports json well and competes with mongodb, which is used by fewer and ...

I. Overview PuTTY is a Telnet, SSH, rlogin, pure TCP and serial interface connection software. Earlier versions only support Windows platforms, and in recent versions, Unix platforms have been supported and are intended to be ported to Mac OS X. In addition to the official version, many third-party gr ...

SSH and ansible deployment methods Deployment environment Management server 172.16.1.61 NFS Server 172.16.1.31 Backup server 172.16.1.41   1 Check whether the SSH service is running and start the service Netstat-lntup | grep SSH Check whether the current service is running / etc/init.d/sshd status Start SSH Service 2. DSA key authentic ...

Hadoop cluster build-03 compile and install Hadoop Hadoop Cluster Build-02 Installation Configuration Zookeeper Preparations for Hadoop Cluster Building-01 HDFS is a distributed file system used with Hadoop, which is divided into two parts. namenode: nn1.hadoop nn2.hadoop datanode: s1.hadoop s2.hadoop s3.hadoop (If you can't understand th ...

Ansible batch automation management tool (2) 1. Introduction to Tools and Environment 1.1 Introduction to ansible Tools for batch management servers Managing by ssh without deploying agent s Popular automation tools: https://github.com/ansible/ansible 1.2 Introduction to Jenkins Visual Operations and Maintenance (mainly for Visual Deploym ...

I. What is a timer? JS provides some native ways to delay execution of a piece of code. Here's a brief introduction setTimeout: Set a timer to execute a function or code snippet after the timer expires var timeoutId = window.setTimeout(func[, delay, param1, param2, ...]); var timeoutId = window.setTimeout(code[, delay]); Timeout Id: Timer ID f ...

Catalog basic operation 1.1. File operation 1.2. Text operation 1.3. Directory operation 1.4. SSH, System Information-Network Operation Basic Shell Programming 2.1. variable 2.2. String substitution 2.3. function 2.4. condition 2.5. loop Skill debugging 1. Basic Operations a. export Display all environment variables. If you want to ...