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What is Kickstart Installations? Kickstart Installations for unattended automatic installation Kickstart files, which are ready before installation, can be used to automatically perform the installation. It can be saved on a single server system and supports one to many: that is, a single file installs CentOS on multiple computers All Kickst ...

In the privatization platform, ntp server needs to be deployed. Because it is two physical servers, in order to avoid single point problem, two ntp servers need to be deployed here. Other clients in the same network segment need to calibrate and synchronize the clock with these two servers through ntp service. Since it is a private platform, o ...

CIS security scanning is one of the heavyweight functions introduced by Rancher 2.4, which aims to help users quickly and effectively enhance the security of clusters. This article will introduce the CIS security scanning function in detail, including the detailed operation demo.    This article comes from Rancher Labs  Cluster security is a c ...

cgroup cgroup introduction cgroup, a control group, provides a mechanism for controlling the use of resources by a specific group of processes. cgroup binds a process set to one or more subsystems. Why cgroup Group the processes uniformly, monitor the processes and manage the resources on the basis of grouping. subsystem cgroup is a mechanism t ...

File packaging and compression   Self feeling: it's easy to learn how to pack and compress files. Although there are many compression names, several are not commonly used, and several commonly used options are basically universal. It will produce a good result. Just learn the option of one command and remember the names of the remaining command ...

Get ready    prepare three Linux machines that can access each other. Take Centos 7 as an example: node1-192.168.22.117 node2-192.168.22.118 node3-192.168.22.119    turn off the firewalls of these three machines: systemctl disable firewalld.service systemctl stop firewalld.service install    etcd nee ...

operating system Modify / boot/grub2/grub.cfg Navigate to the first 'menu' CentOS Linux 'and add it on the last side of "linux16 /vmlinuz" numa=off transparent_hugepage=never default_hugepagesz=2M hugepagesz=2M hugepages=1536 *hugepagesz indicates the page size. Choose one of 2M and 1G, and the default is 2m. hugepages ...

1 Introduction Nginx is a very powerful and popular high-performance Web server. This article explains how nginx integrates https and redirects http to https. https related articles are as follows: (1)Spring boot integration https is so simple (2)Key knowledge and key tools of HTTPS Keytool and keystore Explorer (3)Two ways for spring boot to r ...

CentOS 6.5, MySQL multiple instances (in fact, the same principle applies to a single instance) 1, Problem description [root@www ~]# /data/3308/mysql start Starting MySQL... [root@www ~]# ps -A|grep mysql [root@www ~]# Start mysql database, and there is no result by checking the process. 2, Problem solving Check the mysql error log. Th ...

A new WeChat official account has been applied for. 1. Apply for the account of wechat public platform, and then apply for Tencent cloud recommended by him to do demo 2. After applying for centos host, get the public ip and password. After ssh login, follow the demo prompt 3. Install web.py. wget -c http://webpy.o ...