patching linux servers

Linux NTP server-side configuration:1) Setting the/etc/ntp.conf configuration file[Email protected] etc]# vi/etc/ntp.conf# For more information on this file, see the "the Man pages"# ntp.conf (5), NTP_ACC (5), Ntp_auth (5), Ntp_clock (5), Ntp_misc (5), Ntp_mon (5).Driftfile/var/lib/ntp/drift# Permit time synchronization with We time source, but does not# permit the source to a query or modify the service on this system.Restrict default Kod nomodify no

rsync at least than SCP Fast - times more so everyone if needed in Linux/unix a huge amount of data is transmitted between servers, Rsync is a very good choice. "2" rsync service-side modeFirst check whether rsync is installed:Rpm–q rsyncrsync-2.6.8-3.1Indicates that rsync is installed, and if the prompt appears package rsync was not installed then this software report does not install you can use Yum to

://s3.51cto.com/wyfs02/M01/59/83/wKiom1TU_yvBtp_ZAABLpsPBFMY006.jpg "style=" float: none; "title=" 30.png "alt=" Wkiom1tu_yvbtp_zaablpspbfmy006.jpg "/>Six, mount the shared folder using mount:Create two files on the target host's shared files directory:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/59/80/wKioL1TVADHAGSSSAACfIKeP9eM180.jpg "style=" float: none; "title=" 31.png "alt=" Wkiol1tvadhagsssaacfikep9em180.jpg "/>Use the Mount command to mount the target host Guest user's shar

One, view Linux server CPU detailsDetermine the Linux server CPU based on the followingCPUs with the same core ID are Hyper-threading of the same coreCPUs with the same physical ID are the same CPU-encapsulated thread or coreTo view the number of physical CPUsCat/proc/cpuinfo|grep "Physical ID" |sort|uniq|wc-lView the/proc/cpuinfo file, intercept the information of the physical ID, sort, de-heavy, countNumb

A lot of information was looked up from the Internet. Finally, the number of memory and CPU under Linux is clear. Individuals who feel that using Linux systems should understand. First publish the following, if there are errors, please feedback to me. Thank you!! The maximum number of memory and CPUs the Linux system/server can support.Intel X86 Maximum number o

Keep in mind that these seven points will make your Linux server more secure Figure 1: The service in operation. Services required for installation If you're going to run a server, you might think, "I Have a 40GB SSD (SSD) storage System from Linode, so I can install any service I want to install." "Yes, you're on your turf: You can install any software on the server. But don't make mistakes that take for granted. Even the most impenetr

Command configuration for obtaining servers and clients of the Network File System nfs in linux-Linux Enterprise Application-Linux server application information. For details, see the following. Concept: nfs rpc-based network service enables resource sharing between Unix hosts. Prerequisites: the nfs software package

Article Title: tip: Add new partitions for Linux servers. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. This operation is performed remotely. It seems a bit unimaginable on window

Loadrunner monitors the installation and operation of linux servers-Linux Enterprise applications-Linux server application information. The following is a detailed description. I used to find a lot of related materials. later, I checked some information about linux on the In

I am not familiar with Linux, this is a little embarrassed, although I do PHP development. I am just familiar with the operation of Apache+php+mysql, but Linux server configuration is too understandingSo I installed the windows2008, install the integration package is the Aliyun to provide the download package, install windows2008, needless to say, directly said to install the PHP environmentThis place note

, restart is disabled)Permanently closed:>>cd/etc/selinux>>vi configSelinux=enforcing Change to DisabledTemporary shutdown:>>setenforce 0To view the SELinux status:>>getenforce //Status is enforceing on, off status is permissive2.5: View Zabbix-agent service Run status>>service zabbix-agent StatusActive (running) indicates normal operation3:zabbix Server Add MonitoringConfiguration-host-Create hostEnter the appropriate server informationTemplate page link presets for template OS

Build DHCP service on Linux system server, realize two basic functions: 1, automatically assign IP address, 2, specify IP address manually.First prepare two virtual machines as the experimental object, a Linux system as a server, a windows7 system as a client, both using the same virtual NIC Vmnet1, and using only host mode.Determine if the disc status on the server is connected,Use commands to view and Mou

fields (such as: User name, process name, and file or socket name) in double quotation marks. In the following example, we create a trace file that includes only write events to the home directory (we can then use "Sysdig-r writetrace.scap.gz" to see it).Sysdig-p "%user.name%proc.name%fd.name" "Evt.type=write and Fd.name contains/home/"-z-w writetrace.scap.gzSysdig_p_15498248586_de5f5fc93d_zSysdig Example: monitoring network I/OAs part of server debugging, you may need to spy on network traffic

Spam malware has infected thousands of Linux and FreeBSD system servers According to the latest 23-page Security Report published by the anti-virus provider Eset, thousands of Linux and FreeBSD operating system-based servers have been infected with Mumblehard malware in the past seven months, and quietly use some of t

Editor's note: Cluster SSH is a tool that can be used to manage multiple remote computers simultaneously through the SSH protocol. It is ideal for quickly configuring all computer nodes in a cluster that run the same service and have the same configuration. There are a large number of open-source management tools available for such management, such as dsh and SUSE Manager. The following describes how to use ClusterSSH to manage multiple Linux

How to disable linux host ping by other serversHow does one disable linux Hosts from being pinged by other servers (without affecting the ping from the local host to other servers )? Method: ping prohibited: echo 1>/proc/sys/net/ipv4/icmp_echo_ignore_all: echo 0>/proc/sys/net/ipv4/icmp_echo_ignore_allNote: Because/proc

Batch deployment of application system shell scripts (Tomcat/jetty) and tomcatjetty on linux servers Shell script for batch deployment of application systems on linux servers: 1. Replace the server address in the Code (Tomcat or jetty server) ServerRoot =/home/undoner/java_tool/apache-tomcat-7.0.61ServerDir =/home/undo

[: [Linux86]: Apache host [Linux87]: PHP host [Linux88]: MySQL host Internal test. In windows, you need to change the hosts file to the httpd host. Add the hosts file in the example: 172.16.251.86 www.Androidj.com 172.16.251.86 www.bkjia.com -------------------------------------------------------------------------------- LAMP is the abbreviation of a group of free software that is usually used together to run dynamic websites or servers: Install the L

Take the two linux servers rootA and rootB as examples to compile and install the latest openSSH version (recommended). the default setting of openSSH is to allow root users to directly log in. (PermitRootLoginyes). For the moment, we will consider how to use SSH to directly access the r... Take the two linux servers r

Linux/centos server maintenance 1. centos server maintenance (the server is fully maintained by us, which is also the most reassuring service for you): centos server security configuration, WEB server environment configuration, and other application installation configuration, website Security Detection and cleaning, anti-virus software, firewall installation, data backup, migration, program upgrade, etc. Responsible for the technical processing and