CentOS

CentOS (Community ENTerprise operating System) is one of the Linux distributions that is compiled from the source code released by Red Hat ENTerprise Linux in accordance with open source rules. Because of the same source code, some servers that

1.uptime command [Spark@master log_data]$ uptime 09:18:01 up 20:17, 1 user, load average:0.13, 0.12, 0.14 2. View/proc/uptime file Computing system startup time [Spark@master log_data]$ cat/proc/uptime 73064.44 276161.85 Output: 73064.44 2

Join in the/etc/sysctl.conf Fs.file-max = 65535 Net.ipv4.ip_forward = 1 Net.ipv4.tcp_fin_timeout = 30 This parameter determines the time it remains in the fin-wait-2 state if the socket is closed by the local request. The right end can be an error

[Root@master ~]#/etc/init.d/named RestartStop named: [OK]Start named:Error in Named configuration:Zone centos.vbird/in:loaded Serial 2011080401Dns_master_load:named.192.168.100:2: unexpected end of lineDns_master_load:named.192.168.100:1: Unexpected

Reference article: 51CTO recommended Blog-CentOS yum Source Configuration Tips This article refers to the above blog, and make some adjustments. Brief Introduction: Linux package rpm is convenient to use, but it does not solve some of the

Operating Environment: Centos 6.5 x86_64 Ethtool Operation Steps: View Network Port EM1 device information at this time [Root@ceph-osd-2 ~]# ethtool em1 Settings for EM1: supported ports: [TP] supported link modes: 10baset/ Half 10

Install Squid Yum install squid-y #-y represents automatic selection y, automatic installation After installation, you can customize the HTTP proxy port, set the source IP white list, etc. vi/etc/squid/squid.conf #------Custom HTTP port: # Squid

http://www.oschina.net/question/17_39276 The old version of the Redhat/centos defaults to install the system, will default to open the network card and set to boot. But this feature has changed in the latest version 6 ... The NIC will disconnect by

The powerful Linux system service management tool that has recently come into contact with Systemctl, in addition to the 3 common instructions for System V, service, and Chkconfig, has a number of practical features that are commonly used

Note: SSH password-free interoperability, should be for more than one server communication, I only use a server to do processing. 1, modify the host name. Vi/etc/sysconfig/network Networking=yes hostname=centos1 vi/etc/hosts #末尾添加 IP host name 192.

1. Download Quick Install SHhttp://download.csdn.net/detail/u012547633/9882697Download the CentOS version of the Phabricator installation script to the OPT directory and install #cd/opt #chmod 777 install_rhel-derivs.sh

compilingBefore compiling JDK7, install a JDK6 version, because some Java files need to be compiled, configuration update source, yum-y Groupinstall ' base ', yum-y install make; installation package, yum-y install Alsa-lib -devel cups-devel

This article mainly describes the Apache binding domain name under CentOS and Apache binding multiple domain names, first of all to find Apache configuration file httpd.conf location. CentOS operating systems are typically under/etc/httpd/conf, and

Reference: http://ljf.me/archives/use-yum-to-quickly-upgrade-centos-6-5-kernel-3-10-28 1. Open http://elrepo.org/tiki/tiki-index.php Follow the prompts to execute the command according to the appropriate version: sudo rpm--import

Objective: I currently use the server for the centos6.x system from the Python version of the 2.6.x, but at present, whether learning or using Python,python3 are preferred, then the problem comes. --How to install the PYTHON3 environment, and how to

Check to see if the Linux system has JDK installed [root@linux1 ~]# rpm-qa | grep java tzdata-java-2016c-1.el6.noarch java-1.6.0-openjdk-1.6.0.38-1.13.10.4.el6.x86_64 java-1.7.0-openjdk-1.7.0.99-2.6.5.1.el6.x86_64 Uninstall the system with its

website Download 1. Direct download. tar.gz installation package, Address: http://tomcat.apache.org/download-70.cgi 2. Use the wget command to download (recommended). Wget-c

What I'm talking about here is the desktop version of CentOS. First of all, we must ensure that the network unblocked, open the browser, see if can surf the internet. 1. Click on the application in the top left corner to find an overview of the

Today, it is found that the Linux machine cannot be connected with SSH and can not ping the machine, behind by NETSTAT-ANP | grep time_wait | Wc-l commands to see the number of time_wait connections, let's take a look at a lot of time_wait problem

Installation referencehttps://www.unixmen.com/how-to-install-zabbix-server-on-centos-7/ Create database zabbixdb; Grant all privileges the zabbixdb.* to ' ops ' @ ' localhost ' identified by ' 123123 '; Grant all privileges the zabbixdb.* to ' ops