Linux

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!The Linux process has a certain relationship with each other. For example, on the basis of the Linux process, we see that each process has a

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!Text flowFiles are used for data storage, which is equivalent to a house that stores data. We said earlier that the so-called data is a sequence

1. Command format: MV [option] source file or directory destination file or directory2, Command function: MV command to rename the file or move it to a new directory3. Command parameters:-B: Overwrite the previous backup if you need to overwrite the

1. Turn off SELinux functionSELinux (security-enhanced Linux) is the implementation of the U.S. National Security Agency (NSA) for mandatory access control. Recommended to close, as for security issues, you can find another way. Check the SELinux

Linux users and user groups cannot be full numbers. linux User Groups To encapsulate the command line today, you need to create users and user groups. The following problems are encountered, At that time, I was confused. Why did the user group '1

Linux tee command and linuxtee command I. Introduction Tee uses standard input as input, standard output and file as output.   Ii. Syntax Usage: tee [OPTION]... [FILE]... copy standard input to each FILE, and also to standard output. -a, --

Usage and interpretation of common Git commands Common git commands: Add Add file contents to the index (add the file to the temporary storage area) Usage: Save a file to the hold zone: git add file name Save all files in the current path to the

How to change the Tab in Sublime to four spaces For beginners of sublime, especially Python users, how can the software automatically correct the Tab to a specified number of spaces? The following describes the tips. In the Sublime configuration

How to mount a Remote File System Using SSHfs on Linux Have you ever thought about using a secure shell to mount a remote file system to a local device? If so, SSHfs may be what you need. It uses SSH and Fuse (LCTT: Filesystem in Userspace, a

Install the network scan and sniffing toolkit Nmap 7.00 on Ubuntu Nmap is a command line network detection tool that supports ping scanning to identify network hosts, port scanning technology, and TCP/IP fingerprints. Nmap can determine which

Formatting and attaching hard disks in Linux Formatting and attaching hard disks in Linux To use a hard disk, you must partition, format, and mount it. We have talked about MBR and GPT partitions. Next we will discuss how to format a partition.

VirtualBox-Linux system installation enhancementsBefore installation, We must install the dependent packages required by it. Otherwise, the installation process will be wrong! 1. install the dependency Package 1 # yum install kernel-headers2 # yum

High-availability Hadoop platform-Oozie Workflow1. Overview When developing and using Hadoop-related applications, we can directly use Crontab to schedule related applications without complicated services and few tasks. Today, we will introduce the

Hadoop1.2.1 plugin Compilation This article describes the compilation steps of Hadoop 1.2.1 plug-in and the configuration of the compiled plug-in. 1. Decompress Haoop 1.2.1source file hadoop-1.2.1.tar.gz to D: \ hadoop-1.2.1 2. Import the project to

Curl usage: Get the header and status code of the website The most common method for curl commands is to use parameter-I to obtain the header information of a domain name or IP address, including the HTTP return status code, server type, text type,

DRBD Master/Slave switchover DRBD Master/Slave switchover During system maintenance or in a high-availability cluster, when the primary node fails, the roles of the primary and secondary nodes need to be exchanged. There are two ways to switch

Nginx-1.9.7 TCP reverse proxy (short) This is called reverse proxy. It just seems that the structure is similar to the Nginx-Tomcat reverse proxy cluster. it's not official ~Add the script address to the end ----------------------------------------

Heartbeat cluster component Overview Heartbeat is a Linux-based open-source high-availability cluster system. It mainly includes two high-availability cluster components: Heartbeat service and resource manager. The heartbeat monitoring service can

Ceph single/multi-node Installation Summary Power by CentOS 6.x Overview Docs: http://docs.ceph.com/docs Ceph is a distributed file system that supports replication and fault tolerance while maintaining POSIX compatibility. The biggest feature of

Hadoop namenode for NFS disaster recovery 1. Select a disaster recovery machine as the NFS server. (1) the installation is as follows: Apt-get install nfs-kernel-server (NFS server, providing nfs service) Apt-get install portmap (Port ing server,