CentOS7 installation configuration mongodb3.2

1. Download Dependent Packages yum -y install wget 2. Create a file directory mkdir -p /app/install mkdir–p /app/data/mongodb mkdir–p /app/log/mongodb 3. Download mongodb cd /app/install wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.2.16.tgz tar zxvf mongodb-linux-x86_64-3.2.16 ...

Posted by Collin on Mon, 20 Jul 2020 18:21:42 +0200

Solving Chinese Scrambling Problem of mysql+python on mac Platform

First, for mysql databases, the default character is latin1 This latin1 is the culprit that we can't write in Chinese.The solution, then, is to change the character set to UTF-8 The easiest way to do this is to modify the windowMy.iniProfile),My.iniWhere and how to modify it to UTF-8 is as follows: https://www.cnblogs.com/Ray-xujianguo/p/332 ...

Posted by htcilt on Sun, 12 Jul 2020 17:34:44 +0200

4 Openstack-Ussuri-Keystone cluster deployment-centos8

The main functions of Keystone are as follows: 1 manage users and their permissions; 2. Maintain the Endpoint of OpenStack service; 3 Authentication and authentication. 4.1 configure Keystone database #Create database in any control node, the database is automatically synchronized, take controller 1 ...

Posted by Sooz719 on Thu, 18 Jun 2020 05:36:15 +0200

Mysql enable slow query and log analysis

1, Why open slow query Most of the reasons for the poor query performance are the large amount of data. To start the slow query of mysql and record the SQL statements that take a long time to query in the log is conducive to our better position and optimization. 2, Several common reasons for the ...

Posted by bg on Sun, 14 Jun 2020 05:47:10 +0200

Make full use of Git to cancel and improve project quality (recruitment at the end of the article)

0x001 general An excellent front-end engineer must be an excellent engineer first; an excellent engineer must be responsible for every line of code he writes and every commit he submits. That said, I don't want to write a very large and comprehensive article, but I want to write some small things. 0x002 undo git add We know that to submit a com ...

Posted by kkessler on Sat, 13 Jun 2020 11:39:17 +0200

Summary: encryption and security

Objectives of information security protection Confidentiality Integrity Usability Controllability Non repudiationSafety protection link Physical security: environment of various equipment / hosts and machine rooms System security: the operating system of a host or device Application Security: various ne ...

Posted by Tokunbo on Thu, 11 Jun 2020 08:14:01 +0200

vnc,vnc remote control tutorial, vnc server installation tutorial diagram.

VNC introduction VNC is a remote control tool software. VNC is a free open source software based on UNIX and Linux operating system. It has powerful remote control ability, high efficiency and practicality. iis7 server management tool is a free VNC connection software. It supports batch opening and installation of VNC servers. It can connect m ...

Posted by ashly on Tue, 02 Jun 2020 16:50:15 +0200

nfs service, autofs auto mount

cifs - NFS (file system sharing) Note: the server version should be consistent with the image Server: yum install nfs-utils -y 15 systemctl start nfs 16 firewall-cmd --get-services 17 firewall-cmd --permanent --add-service=nfs ##Add firewall policy 18 firewall-cmd --permanent --add-service=rpc ...

Posted by SevereSoldier on Sun, 31 May 2020 18:39:38 +0200

CentOS 6.X installs ddos deflate to defend against ddos Attacks

DDoS deflate is a very small tool for defense and mitigation of DDoS attacks. It can create a large number of IP address information of Internet connection by monitoring netstat, and prohibit or block these non IP addresses through IPTABLES. It must be downloaded and installed in the terminal account under root authority. The specific commands ...

Posted by vurentjie on Fri, 22 May 2020 16:45:29 +0200

Data Source Management | OLAP Query Engine, ClickHouse Clustered Management

Source code for this article: GitHub. Click here || GitEE. Click here 1. Introduction to Column Library ClickHouse is the 2016 Open Source Column Storage Database (DBMS) of Yandex, Russia. It is mainly used for OLAP online analysis processing queries, and can use SQL queries to generate real-time analysis data reports. Column storage Row stor ...

Posted by bettydailey on Mon, 18 May 2020 02:49:32 +0200