Programmer Think

1. Zabbix introduction Zabbix is an enterprise class open source solution that provides distributed system monitoring and network monitoring functions based on WEB interface. Zabbix can monitor various network parameters to ensure the safe operation of the server system; And provide flexible notification mechanism to enable system administrat ...

Author: michelangela young, preacher KubeSphere, cloud native severely infected On January 18, 2022, Linux maintainers and vendors in the legacy of Linux kernel (5.1-rc1 +) file system context function_ parse_ An error was found in the param function Heap Buffer Overflow Vulnerability with ID number CVE-2022-0185 , which is a high-risk vulne ...

The interruption process is a clich é, but I only know that after the interruption, I will protect the site, jump to the interruption vector table, execute the interruption, restore the site, and then return. As for more details, we don't know. This article aims to sort out a more complete linux interrupt processing flow. The main questi ...

1. Preface Tiny4412 development is an Android and Linux learning development board launched by the arm of friendship. The CPU adopts Samsung's EXYNOS4412, 32-bit chip, belongs to Cortex-A series, the main frequency is 1.5GHZ, and can run ubuntu and Android 5 0. Pure Linux and other operating systems. This article introduces how to use this de ...

Component introduction Node Exporter node_exporter is the general name of a kind of data acquisition components. Exporter is responsible for collecting data from the target and converting it into the format supported by Prometheus. It opens an http interface (so that Prometheus can grab data) Different from the traditional data collection com ...

College students are too boring at home during winter vacation. Sort out the knowledge they have learned before and review it by the way. The level is low and the professionalism is poor. It's only for reference. Don't spray it if you don't like it (no one sees it anyway). It's almost unsealed. Wuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwuwu ...

"The value of the container itself is very limited. What is really valuable is the container arrangement." Containers and processes docker uses the Namespace mechanism to modify the process space of isolated applications. The system call to create a thread in Linux is clone() int pid = clone(main_function, stack_size, SINCHLD, NULL) ...

The creation of UV M is inseparable from the three core elements of factory: registration, creation and coverage `uvm_{component,object}_utils() uvm_{component,object}::type_id::create() uvm_{type,inst}_override{,_by_type}() Among them, override instance program: override method set by type_ type_ Override to illustrate. module factory_ove ...

Linux resource control I Resource isolation What is a Namespace? namespace is a method used by the Linux kernel to isolate kernel resources. It is the encapsulation and isolation of global system resources, Processes in different namespace s have independent global system resources, Changing the system resources in a namespace will only ...

Server architecture The server system is Centos7 First, we need to know the external architecture of the system General architecture: 1. Domain name - > ECS 2. Domain name - > CDN - > cloud server (OSS) 3. Domain name - > CDN - > ECS + RDS + Redis cache 4. Domain name - > CDN - > Load Balancing - > ECS + RDS (mast ...