Programmer Group

1. Add mysql monitoring items to zabbix-server It is far from enough to find that there are few monitors and trigger graphics in the enterprise. 2. Import your own monitoring template for mysql services Go to the agent directory and view the configuration file [root@server1 ~]# cd /etc/zabbix/zabbix ...

1. Why pre-partition? * Increase data read-write efficiency * Load balancing to prevent data skewing * Convenient cluster disaster relief dispatch region * Optimize the number of Map s 2. How to pre-partition? Each region maintains the startRow and endRowKey, and if the data added matches the r ...

1.1.1. What is a domain name A domain name is a website. www.baidu.com www.taobao.com www.jd.com Tcp/ip Dns Server: Resolve the domain name to an IP address.Save the mapping relationship between the domain name and ip. First-level domain name: Baidu.com Taobao.com Jd.com Secondary domain name: www.baidu.com Image.baidu.com Item.bai ...

1. Adding new users Because the user rights of root are too large in daily use, a user is added for daily use or for other people's use. 1 Additional Users adduser [username] [root@centos ~]# adduser dex 2 Setting Password passwd [username] [root@centos ~]# passwd dex Changing password for ...

Articles Catalogue Introduction to OpenResty Analog cache forward Analysis Stress testing Introduction to OpenResty OpenResty (also known as ngx_openresty) is a scalable Web platform based on NGINX, initiated by Chinese Zhang Yichun, which provides many high-quality third-party modules. OpenRest ...

Virtual web host refers to running multiple web sites in the same server, each of which actually does not occupy the entire server independently, so it is called "virtual" web host. The virtual web host can make full use of the hardware resources of the server, thus greatly reducing the cost of website construction and operation.It i ...

1. Introduction to Keystone Kestone is one of the components of OpenStack, which is used to provide unified authentication services for other members of OpenStack family, including authentication, token issuance and verification, service list, user rights definition and so on. The authorization and authentication of all services in the cloud e ...

Replication and Recovery of Virtual MachinesDuplicating a virtual machine is actually duplicating his hard disk and hardware information. /var/lib/libvirt/images/xxxx.qcow2 ##Storage Path of Hard Disk /etc/libvirt/qemu/xxxx.xml ##Hardware Information File Storage Path For example, to replicate a vir ...

1. Encapsulation and snapshot creation of RHEL 6.5 ## Since the specific encapsulation steps are consistent with those of RHEL version 7.5, the repetitive contents are not redundant, but the different operations are simply explained. (1) configure ip, gateway, DNS, host name and local resolution (2) T ...

Package Installation and Unloading 1. Three ways to install software packages 2. rpm package introduction 3. Use of RPM tools 4. Usage of Yum tools 5. yum Builds Local Warehouse 6. yum Replacement of Domestic Sources 7. Install the extended source epel 8. yum downloads rpm packages 9. yum's new instr ...