Linux

Linux remote copy and local copy command one, Linux to linux remote copy SCP command syntax:SCP file name The SCP provides several options:-P Copies the files at the time of the creation of the source files.     -Q does not display any prompt

A long time ago it was not very systematic to learn the common use of Linux commands for processing characters. Although the study progress at that time is also very satisfactory. But then it's easy to forget.Now the system has learned the Linux

Novice first, working under Linux, must first understand the file system must be deleted and modified.Learning the first Linux command estimate is ll, in CentOS is very friendly, input ll display of the information is really rich enough to know that

Hwclock command can be used to display / sets the hardware clock command. There are two kinds of clocks, such as hardware clock and system clock, in Linux. The hardware clock is the clock device on the motherboard, which is usually the clock that

I believe the fear of the command line is the biggest mistake a new Linux user has made. For this reason, let's take a look at some basic command lines that Linux users should know about.1. ManI started with the "Man" command because in many ways it'

In the previous article, we talked about how to match the strategy to get a routing table, in fact, in Rib_rule, is the index of the routing table used by this policy, here by the way to explain the FIB (Forward infomation Base), that is, the

1, in the Linux system, we may often encounter the host time is not synchronized this situation, it is necessary to set the host time synchronization.Case one:There are four server nodes, there are two master nodes (main node: 10.183.35.45; Slave

Debian Learning Record-1 and debian record-1 Previously installed ubuntu12. Later, I did not continue to use it. The graphic interface was very good and there were many reasons for not continuing to learn: · No basic knowledge supported (copy

Linuxnfs mounting configuration Nfs mounting is not described here. Follow the steps in sequence. A picture has a truth. Server Configuration: (ip 192.168.88.85) 1. Check the software nfs package installationRpm-qa | grep nfs 2. Check whether

CentOS/Linux automatic server synchronization timeThe newly installed CentOS system server may have an incorrect time, which is very important during cluster creation. It is very likely that the cluster will fail due to time, therefore, you need to

Centos system VPN configuration method Step 1. confirm that the machine has activated PPP and TUN Cat/dev/pppcat/dev/net/tun After using the above two lines of script, do you see the same prompt as me? If yes, you can install it. If not, you need

Rename CentOS with wget command I just got back to the dormitory and it was okay. I used vps to download iQiYi video for fun. I just encountered a RENAME file problem and kept a record;There are two concepts for renaming, which are different from

Correctly set the time to synchronize with the clock server in CentOS 7.x Chrony is an open-source free software that helps you keep the system clock in sync with the clock server (NTP) and therefore keep your time accurate. It consists of two

Configure the rsyslog client on CentOS to remotely record logs. Rsyslog is an open-source tool widely used in Linux systems to forward or receive log messages over TCP/UDP. The rsyslog daemon can be configured into two environments: one is to

No response after Heartbeat is started After applying heartbeat to the production environment, start service heartbeat start and no response will be made after discovery. Check the tail-f/var/log/ha-log as follows: Heartbeat [30680]: 2015/01/27 _ 18:

LVS + Keepalived high-availability server Load balancer cluster architecture Experiment Lab environment:LVS and keepalived:1. The purpose of keepalived is to build a highly available LVS Load Balancing cluster. You can call the ipvsadm tool to

Etcd: a comprehensive explanation from application scenarios to implementation principles As CoreOS and Kubernetes and other projects become increasingly popular in the open-source community, the etcd components used in their projects become a

Custom Cacti host Template After installing cactiEZ, You can monitor the host and find that the built-in template is different from what you want to monitor. Some monitoring projects do not, but many useless items are added. So I made a custom set

Linux Server Python production environment Configuration We often repeat some tutorials during Linux O & M configuration, so we plan to build some knowledge at the O & M level. First, make some simple sorting, and then continue to update as

Redis-based open-source distributed service Codis Redis's usage history in pods-Single Instance = multi-instance, sharding in Business Code = single Twemproxy = multiple Twemproxy = Codis, the distributed Redis Service developed by pods. During