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RAID (Redundant Array of Inexpensive Disks) Create 3 partitions for implementing RAID using fdisk command. e.g. #fdisk /dev/hda Press n to create the 3 new partitions each of 100Mb in size. Press p to see the partition table. Press t to change the partition id of all the three partitions created by you to fd […] Kdump is an utility used to capture the system core dump in the event of system crashes. These captured core dumps can be used later to analyze the exact cause of the system failure and implement the necessary fix to prevent the crashes in future. Kdump reserves a small portion of the memory for the […] YUM SERVER #################### Y U M S E R V E R #################### [root@server~]#vi /etc/hosts 192.168.10.253 server.example.com server [root@server~]#rpm -qa | grep yum #require packages yum-3.0.1-5.el5 yum-metadata-parser-1.0-8.fc6 yum-rhn-plugin-0.4.3-1.el5 yum-updatesd-3.0.1-5.el5 [root@server~]#rpm -qa | grep createrepo createrepo-0.4.4-2.fc6 # To create repository [root@server~]#rpm -qa | grep vsftpd #FTP service for yum server vsftpd-2.0.5-10.el5 #service vsftpd restart #chkconfig […] lsof command for monitoring In Linux operating system lsof is powerfull tool for find out various kinds of status and list of open files from all over the system, there are various options provided in lsof which helps a lot to a Linux admin in his/her day to day life. In this post I am […] Backup with Rsnapshot tool How To Set Red hat / CentOS Linux Remote Backup / Snapshot Server A. rsnapshot is easy, reliable and disaster recovery backup solution. It is a remote backup program that uses rsync to take backup snapshots of filesystems. It uses hard links to save space on disk and offers following features: […] How to Configure Primary DNS Server in redhat 6 Step by Step Domain Name Server (DNS) Configuration and Administration Domain Name System The Domain Name System (DNS) is the crucial glue that keeps computer networks in harmony by converting human-friendly hostnames to the numerical IP addresses computers require to communicate with each other. DNS is […] CentOS 6.9 Hadoop 2.7.2 master 192.168.1.130 slave 192.168.1.131 master [root@localhost ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost 192.168.1.130 master 192.168.1.131 slave [root@localhost ~]# vi /etc/sysconfig/network NETWORKING=yes HOSTNAME=localhost.localdomain NETWORKING=yes HOSTNAME=master slave [root@localhost ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost 192.168.1.130 […] Environment: Virtual Machine + CentOS 7 1. download binary package, the following mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz link is the official website cd /usr/local/src wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz 2. extract, rename [root@beta src]# tar zxvf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz [root@beta src]# ls index.html?id=471614 mysql-5.7.19-linux-glibc2.12-x86_64 mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz [root@beta src]# mv mysql-5.7.19-linux-glibc2.12-x86_64 /usr/local/mysql 3. Initialize [root@beta mysql]# useradd -M -s /sbin/nologin mysql [root@beta mysql]# ls bin COPYING […] rsync + inotify is a more commonly used real-time synchronization solution, but it is not applicable in all the scenes, rsync + inotify more suitable for the following 10 small-scale web cluster in real-time synchronization, but in the use of rsync + inotify solution and the use of rsync daily, rsync + inotify rsync server […] OpenSSH server is the standard SSH client and server. OpenSSH is suggested for remote login, transfer file by means of SCP or SFTP, and a much more. SSH is perfect to keep confidentiality and integrity for data exchanged between two systems and networks. OpenSSH encrypts all traffic and password to effectively eliminate with assaults. In […] |
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