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1, Jenkins and continuous integration 1) What is Jenkins? Jenkins is an open source software project, which aims to provide an open and easy-to-use software platform and make continuous integration of software possible. Jenkins is a continuous integration tool developed based on Java, which is used to monitor continuous and repeated work. Its ...

What is ELK? Elasticsearch is an open source distributed search engine. Its characteristics are: distributed, zero configuration, automatic discovery, automatic index segmentation, index copy mechanism, restful style interface, multiple data sources, automatic search load, etc. Logstash is a fully op ...

This blog is only for simple cluster configuration. For more information, please refer to Official documents. 1, Preparation before installation The environment is as follows: System version IP role centos 7.5 192.168.20.2 ES 01,logstash,ES-Head,logstash,kibana centos 7.5 192.168.20.7 ES 02 centos 7.5 192.168.20.8 ES 03 Note: all ...

1. RPM version installation Check to see if there are other versions of the database, and if so, delete it clean Non-root users must have sudo privileges 1. Download mysql related installation packages https://mirrors.tuna.tsinghua.edu.cn/mysql/yum/mysql80-community-el7/mysql-community-server-8.0.18-1.el7.x86_64.rpm https://mirrors.tuna.tsing ...

Building PXC cluster under CentOS8 This paper introduces how to build Percona Server cluster. In fact, the installation package of PXC has been bundled with Percona Server, so some details of Percona Server will be masked during installation. But sometimes you may use Percona Server alone, so this article introduces the installation of Percona ...

Rsync full network backup ===========Operation and maintenance Road -The environment is as follows # Server IP: 10.0.0.100 # Client IP: 10.0.0.101 [root@Centos ~]# cat /etc/redhat-release CentOS Linux release 7.5.1804 (Core) [root@Centos ~]# systemctl status firewalld.service ● firewalld.service - firewalld - dynamic fi ...

Generally, there are two types of yum sources: local yum source and local network yum source. The former provides installation package through file, and the latter downloads installation package through network; Because the yum source of RedHat 7.3 needs to be registered for payment, it often fails to download the yum source i ...

Sometimes, when the system is running, there is a sudden crash, but we have to find out the cause. Although we can solve the current problem through the temporary protection mechanism watchdog, but to find the cause of the crash, we have to rely on the special tool Kdump for kernel analysis. Although I don't understand the Linux kernel, I can f ...

About rsync A fast incremental backup tool Remote Sync Support local replication or synchronization with other SSH and Rsync hosts Configure rsync source server rsync sync source Refers to the remote server of the backup operation, also known as the backup source Configure rsync source Basic thinking Set up rsync.conf configuration file and ...

What is hive? Open source by facebook, used to solve the data statistics of massive structured logs; A data warehouse tool based on hadoop uses HDFS to store and map structured data files into a table, and provides the function of sql like query. The bottom layer uses MR to calculate; The essence is to transform HQL into ...