Programming VIP

1. For the installation of bind 9, it is assumed that bind 9 has been installed through apt get 2. Enter the directory / etc/bind 3. Create a zone record file (similar to db.xxx): Here I create db.testlyhh.com 4. Edit the named.conf.default-zones file and add the following: zone "testlyhh.com" {           type master ...

The previous article gives the process of manual compilation and installation of redis, and gives the process of online installation of redis when simulating the establishment of redis cluster, so I want to write a redis script for online installation. In this paper, I mainly use shell functions to realize and verify the process of online ins ...

RHSA-2018:3092-Medium Risk: glibc Security and BUG Repair Update Code Execute Local Title RHSA-2017:1481-Important: Execution of EXP code exists in glibc security updates sudo yum update glibc sudo yum update glibc-common sudo yum update glibc-devel sudo yum update glibc-headers sudo yum update nscd ...

1. Containerization With the advent of Docker, container technology has made a qualitative leap. Docker standardizes the infrastructure of services, unifies the packaging and distribution of applications, deployment and operating system-related class libraries, and solves the problem of environmental differences in test production deployment.F ...

In the interview about multi-threaded synchronization, you have to think about the question, we know that glibc pthread_cond_timedwait underlying is achieved by linux futex mechanism. The ideal synchronization mechanism should be to use atomic instructions to solve the problem in user mode without lock conflicts, and to sleep and wake up with ...

1. Scenes Current state of cluster # ceph -s cluster e6ccdfaa-a729-4638-bcde-e539b1e7a28d health HEALTH_OK monmap e1: 3 mons at {bdc2=172.16.251.2:6789/0,bdc3=172.16.251.3:6789/0,bdc4=172.16.251.4:6789/0} election epoch 82, quorum 0,1,2 bdc2,bdc3,bdc4 ...

Preface This article mainly explains several questions: What is interruption and what are the categories of interruption? How can interrupt events be passed step by step from the event source to the kernel layer and the corresponding interrupt handling functions are invoked? How is the interrupt system initialized during kernel startup? ...

Description of parameters The replacement parameters used in the following are described: ${env}: environment variables, which describe the development environment, test environment, and use namespaces to distinguish environments on k8s, so first you need to create a namespace: kubectl create namespace ${env}, namespace names can only be alph ...