Android system startup process analysis init process startup process

preface This series of articles briefly introduces the starting process of Android system, which will not stick to the details of the source code, so as to let readers understand the general process. In addition, we need to remind you that you need to have some C/C + + foundation to read this chapte ...

Posted by dusty on Thu, 11 Jun 2020 10:19:31 +0200

Data Source Management | OLAP Query Engine, ClickHouse Clustered Management

Source code for this article: GitHub. Click here || GitEE. Click here 1. Introduction to Column Library ClickHouse is the 2016 Open Source Column Storage Database (DBMS) of Yandex, Russia. It is mainly used for OLAP online analysis processing queries, and can use SQL queries to generate real-time analysis data reports. Column storage Row stor ...

Posted by bettydailey on Mon, 18 May 2020 02:49:32 +0200

Oracle12c? Installation 1 - Preparation

1. Suggest users and groups su root  #Switch to root groupadd oinstall  #Create user group oinstall groupadd dba  #Create user group dba useradd -g oinstall -g dba -m oracle  #Create oracle users and join oinstall and dba user groups passwd oracle  #Set the login password of the user oracle, do not set the password, unable to login i ...

Posted by thomasd1 on Fri, 01 May 2020 13:39:46 +0200

Linux network card / firewall

network Naming rules of network card In Centos6, the naming method of network card: it will dynamically change according to the situation and is not unique and fixed. The commonly used naming methods of network card are eth0 and eth1. When the network card is increased or decreased, the name of network card will change In Centos7/8 network ...

Posted by barrow on Sun, 12 Apr 2020 14:02:54 +0200

Ansible ad hoc and common modules

Ansible execution result information - color description; ansible ad hoc description; how to view help documents and common module details Host planning   Add user account Explain: 1. Login account used by operation and maintenance personnel; 2. All businesses are placed in the "home directory of yun users" under / app / to avoid m ...

Posted by peteraub on Thu, 19 Mar 2020 11:01:10 +0100

Formal Learning linux-12

1.selinux The selinux security subsystem restricts services from domain and security context constraints to only or as much resources as it should have. Domain: Service functional constraints; Security context: Restrictions on file permissions. The state of SELinux is configured by configuring/etc/selinux/config.It is recommended that the s ...

Posted by phpnew on Sat, 14 Mar 2020 17:54:23 +0100

Initial installation experience of GaussDB 100 stand alone

The traditional database technology based on single machine has been unable to support the access processing of massive data. In this case, the database cluster gausdb 100, which supports the high expansion of the system and strong consistency of the sub database and sub table Sharding architecture, came into being. It is a distributed system ...

Posted by vinylblare on Wed, 11 Mar 2020 06:22:49 +0100

Install docker-ce in VM using yum

WeChat Public Number: WELTest Preconditions Dependent Software VM PRO Link: https://pan.baidu.com/s/1yRUIVKFqDwQyoOk9oJvu7g Extraction Code: rgl2 Centos7 ISO[CentOS-7-x86_64-Minimal-1611.iso] Link: https://pan.baidu.com/s/10cgmjK7qtpc3DGCD67YmgA Extraction Code: fzmr Xshell Link: https://pan ...

Posted by copernic67 on Sat, 15 Feb 2020 05:49:42 +0100

kubeadm Install k8s Complete Tutorial

[TOC] 1: Hardware environment preparation Three machines, planned for one master, two node s Sequence Number ip System Version hostname To configure Node type 1 192.168.159.210 CentOS 7.7.1908 (Core) vm210 2-core 2G Master 2 192.168.159.211 CentOS 7.7.1908 (Core) vm211 2-core 2G node 3 192.168.159.212 CentOS 7.7.1908 (Core) vm212 2-cor ...

Posted by Dimensional on Sun, 08 Dec 2019 01:44:50 +0100

Solve the problem of cannot enable executable stack as shared object requirements: permission denied

Start troubleshooting 1. Error prompt for starting apache service. Starting httpd: httpd: Syntax error on line 211 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: libcrypto.so.6: cannot enable executable stack as shared object requires: Permission de ...

Posted by Adastra on Sat, 23 Nov 2019 16:42:03 +0100