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Percona XtraDB Cluster (PXC) cluster is based on Galera 2.x library, a common multi-master synchronization replication plug-in for transactional applications. It is mainly used to solve the problem of strong consistency, keep the data synchronized between nodes in real time and achieve multi-node read and write simultaneously.It improves the r ...

I. Overview Elastic search is an open source distributed search engine. Its characteristics include: distributed, zero configuration, automatic discovery, automatic index segmentation, index copy mechanism, restful style interface, multiple data sources, automatic search load, etc. Logstash is an open source tool for collecting, analyzi ...

What is Memcached? Memcached is a distributed memory cache server for caching data base Query results, reduce the number of database visits, improve the speed and scalability of dynamic web pages. Characteristics of Memcached a. Simple protocol, Memcached uses simple text line protocol b. Event handling based on libevent&nbs ...

Configure network YUM source and third-party YUM source and compile and install ApacheSystem hardware and software environment platform:VMware Workstation Pro 12.5.5 build-5234757CentOS Linux release 7.3.1611Kernel version: 3.10.0-514.el7.x86_64Test time: June 13, 2017Experiment 1: Implementing Network YUM Source1. Prepare relevant system CD-RO ...

1. Delete the default database configuration file for CentOS 7.3 [root@localhost ~]# find -H /etc/ | grep my.c /etc/pki/tls/certs/make-dummy-cert /etc/pki/tls/certs/renew-dummy-cert /etc/my.cnf.d /etc/my.cnf.d/mysql-clients.cnf /etc/my.cnf [root@localhost ~]# rm -rf /etc/my.cnf /etc/my.cnf.d/ [root@localhost ~] ...

7.6 yum Replacement of Domestic Sources Restore the default yum source configuration of the system: [root@adai002 Packages]# cd /etc/yum.repos.d [root@adai002 yum.repos.d]# ls dvd.repo [root@adai002 yum.repos.d]# rm -f dvd.repo [root@adai002 yum.repos.d]# ls [root@adai002 yum.repos.d]# cp ../yum.repos.d.bak/* . [root@adai002 yum.repos.d]# ls ...

HAproxy + keepalive + Kubeadm installation kubernetes master highly available Author: Zhang Shoufu Time: 2019-06-18 Personal blog: www.zhangshoufu.com QQ group: 895291458 Network Topology Host Planning, System Initialization Machine Information host name IP Address Effect K8s-master01 192.168.1.25 Kubernetes master/etcd, keepalive (pr ...

Installing Cent OS7 System Installation Steps SkippedTopological connection:Preparations before installation1. Modify the host name; change the host name to the corresponding host name in the figure above.[root@localhost ~]# vim /etc/hostname2. Update the hosts file on the host and parse the host name with the following IP.192.16 ...

From Congo: https://www.cnblogs.com/ZKPython/p/10992326.html   First, to install nginx and MySQL on the server, the website file is recommended at / usr/local/www, environment Python 3.6+mysql 5.7. Ali cloud's server can have a configured public image, otherwise install the environment on its own. Name of this project: loginOrRegister For X ...

Common orders cobbler check checks cobbler configuration The cobbler list lists all the cobbler elements cobbler report lists the details of the elements cobbler distro to view imported distribution system information cobbler system Views Additional System Information cobbler profile view configuration information cobbler sync synchro ...