What is MemcacheMemcache is a high-performance distributed memory object caching system that can be used to store data in a variety of formats, including images, videos, files, and the results of database retrieval, by maintaining a large, unified hash table in memory. Memcache is a danga.com project, first for the LiveJournal service, initially in order to speed up LiveJournal access speed and developed, and later by many large Web sites. At present, many people around the world use this cache
Switch vlan + vrrp + stp, vlanvrrp
Topology:
Configuration code:
Sw1 ------------
Sys
Vlan 10
Vlan 20
Quit
Int e0/0/1
Port link-type access
Port default vlan 10
Int e0/0/2
Port link-type access
Port default vlan 20
Int e0/0/3
Port link-type trunk
Port trunk allow-pass vlan all
Int e0/0/4
Port link-type trunk
Port trunk allow-pass vlan all
Quit
(Each vswitch is configured)
Stp region-configuration
Region-name fxl
Revision-level 1
Instance 1 vlan 10
Instance 2 vlan 20
Active region-configuratio
#!/bin/bash#this script is appropriate forMinimize installation system CentOS or Linux6. x (This script is suitable for minimizing the installation of the 6.x version of the system) #you have alreadyInstallThe osread-P"pleases input hostname for Linux:"Hnamesed-I."/hostname/s/localhost\.localdomain/$hname/g"/etc/sysconfig/Networksed-I.'s/enforcing/disabled/g'/etc/selinux/config#set IP addressread-P"Please input IP to host (like 192.168.1.1):"IP Read-P"Please input gataway IP for host:"Gateread-P
Static Routing configuration instances between Huawei Switches
Topology
Switch configuration on the left:
Switch configuration on the right:
Switch configuration steps on the left (Switch configuration on the right is similar)
1. Create VLANs in batches
[Huawei] vlan, batch, 10, 100
2. Configure the vlanif address
[Huawei] interface Vlanif 100
[Huawei-Vlanif100] ip address 172.16.100.1 24
[Huawei-Vlanif100] q
[Huawei] interface Vlanif 10
[Huawei-Vlanif10] ip
This article is the PHP development Ethereum system, mainly introduces the use of PHP for intelligent Contract Development interaction, account creation, transaction, transfer, coin development and filters and events and other content.
When I first considered paying in crypto currency, I looked at available solutions like stripe. I think the problem with stripe is that it only allows Bitcoin payments with a U.S. merchant account, so that's not a choice for me. In the Ethereum world, it looks wo
install Haproxy under Redhat
First view the system kernel version number and system name
Uname-a
Linux rh64pfcrm01kf 2.6.32-358.el6.x86_64 #1 SMP Tue, 11:47:41 EST 2013 x86_64 x86_64 x86_64 gnu/linux
Haproxy Installation
Haproxy official website Download source code installation package http://www.haproxy.org/download/1.7/src/haproxy-1.7.5.tar.gz, and copy the source package to a Linux directory
Perform the following command to install Haproxy
TAR–XZVF haproxy-1.7.5.tar.gz #解压文件
cd haproxy-1
the result less than 0 o'clock, the result will be 0. The "incr" command does not overflow.StateThe command "stats" is used to query the server's running state and other internal data. There are two types of formats. With no parameters:stats\r\nThis will then output the status, setting values, and documentation. Another format with some parameters:Stats Through Various statesAfter being subjected to the "stats
the display bar is displayed. Switch B to calculate the average traffic in a few seconds. Other buttons can be clicked h to view the description.
Set the file location ~ /. Iftoprc. For details about how to set the file, refer to the info page of iftop.
Nload
Purpose: monitors the network status and bandwidth used by each ip address in real time (nonsense)
The default nload is the eth0 Nic. If you want to monitor the traffic of the eth1 Nic
# Nload eth1
By default, nload is divided into two par
#iproute-static172.16.10.0255.255.255.0172.16.100.1#user-interfacecon0user-interfacevty04#return
Switch configuration steps on the left (Switch configuration on the right is similar)
1. Create VLANs in batches
[Huawei] vlan, batch, 10, 100
2. Configure the vlanif address
[Huawei] interface Vlanif 100
[Huawei-Vlanif100] ip address 172.16.100.1 24
[Huawei-Vlanif100] q
[Huawei] interface Vlanif 10
[Huawei-Vlanif10] ip address 172.16.10.254 24
3. Configure port GE0/0/1 and Add vlan 10
[Huawei-
After centos6 changes the NIC, the NIC name is auto-incrementing. For example, if it was originally eth0 and changed to eth1 after the change, the original eth0 cannot be used. you need to modify the File: When the NIC changes. when the network card is added. or when you change the network card. this file will change. modify the mac or eth * name. to adjust. 1. Vi/etc/udev/rules. d/70-persistent-net.rules physical machine settings: # After PCIdevic ce
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