rhel 6 3

RHEL 7 went into single-user mode and reset password mode has changed a lot, grub from B-boot into ctrl+x boot. There are two ways to reset the password mainly rd.break and init. Rd.break Method: 1, when starting, in the start interface, the corresponding startup items, the kernel name on the "E"; 2, after entering, find linux16 the beginning of the place, press the "End" key to the final, input rd.break, press the ctrl+x into;

selection number:4 [Press Enter]Now you can try the Java version, the output is as follows# Java-versionjava Version "1.7.0_75" Java (tm) SE Runtime Environment (build 1.7.0_75-b13) Java HotSpot (tm) 64-bit Server V M (build 24.75-b04, Mixed mode)Set Environment variablescat >>/etc/profile.d/java7. sh eofexport java_home=/opt/jdk1. 7 . 0_75export jre_home=/opt/jdk1. 7. 0_75/jreexport PATH=\ $PATH:/opt/jdk1. 7. 0_75/bin:/opt/jdk1. 7. 0_75/jre/bineofRe-open the terminal env|grep HOME to see the

I. Overview: NFS (Network File system), which can be used for file sharing on Unix-like systems. If a system that involves windows needs to consider using the file share provided by the Samb service. It is a server program that is based on the RPC (Remote Procedure Call) protocol (port 111) and cannot be run without RPC. So: 1. The server side must start the RPC service and the NFS service to achieve file sharing; 2. The client side must also run the RPC service and the NFS service;

-j ACCEPT note that -A input-j REJECT -- reject-with icmp-host-prohibited, otherwise it will not take effect. 6. Restart iptables. [Root @ localhost sysconfig] #/etc/rc. d/init. d/iptables restart Flushing firewall rules: [OK] Setting chains to policy ACCEPT: filter [OK] Unloading iptables modules: [OK] Applying iptables firewall rules: [OK] Loading additional iptables modules: ip_conntrack_netbios_ns ip_conntrack_ftp [OK] 7. Connect to the VNC Server

MySQL database is the most used database system on Linux operating system, it can be easily integrated with other servers, such as Apache, VSFTPD, Postfix and so on. The following describes the installation method for the Rhel 6 platform MySQL database server. 1, the installation of a complete MySQL database requires the following RPM package files: Data APIs for Perl-dbi-1.609-4.e16.i686.rpm:perl langu

Oracle Install Oracle 9i/10g on RHEL as 3 Author: ern (yaoyongping@gmail.com) This article describes the steps and knowledge necessary to install Oracle 9i/10g on red Hat Enterprise Linux Advanced Server 3 (RHEL as 3). A lot of related articles, this article mainly focuses

When a new SCSI device is installed in Rhel 6, a disk drift may occur, such as the original system disk is/DEV/SDA, add new device, restart the system, the letter to the last, such as/DEV/SSDA. The reason for the drift of disk character In the Linux kernel, the SCSI hard drive letter assignment is related to the drive scan to the hard disk sequence, that is, the first scan to the hard drive letter is/DEV/

, and renamed to MY.CNF canCp/usr/share/mysql/my-huge.cnf/etc/my.cnfConfigure remote AccessFor security reasons, MySQL does not allow remote access by default, you can use the following to turn on remote accessGive any host access to dataMysql>grant all privileges on * * to ' root ' @ '% ' identified by ' YourPassword ' with GRANT OPTIONMake the changes effectiveMysql>flush PrivilegesIf the remote access is still not possible, it is likely that the firewall, you can open the firewall 3306 port o

Rhel/centos 6 does not configure network interfaces on default installation. Also, it's configured to use NetworkManager. To enable networking interface and disable NetworkManager please follow instructions below.The/etc/sysconfig/network-scripts/ifcfg-eth0 content looks as follows on default installation.Device= "Eth0″HWADDR=SPECIFC MAC AddressNm_controlled= "Yes"Onboot= "NoFor DHCP, configure the interfac

Install Wetty on CentOS/RHEL 6.X What is Wetty? Wetty = Web + tty As a system administrator, if you are on a Linux desktop, you can use it to connect to a remote server like a GNOME terminal (or similar). If you are in Windows, you can use an SSH client such as Putty to connect to a remote computer, and then access the Internet in a browser and check emails. (LCTT note: in short, this is a Web browser-based

new-m tcp-p TCP--dport 22-j ACCEPT-A input-j REJECT--reject-with icmp-host-prohibited-A forward-j REJECT--reject-with icmp-host-prohibitedCOMMITSave and exit the file. Restart the Iptables service:Service Iptables RestartIn CentOS 7, run the following command to allow the Telnet service to pass through the firewall.Firewall-cmd--permanent--add-port=23/tcpFirewall-cmd--reloadThat's it. Now the Telnet service is ready to use.Create userCreate a test user, for example, the username is "SK" and the

After installing RHEL 6, you cannot log on to the system as Root on the logon page by default. First, log on to the system as the user created during installation,Open the terminal and convert it to the root user. The corresponding command is su root. Enter the root user password and press Enter,(We recommend that you back up the files to be modified for recovery)Edit the/etc/pam. d/TPD FileThe correspondin

Set iptables firewall whitelist in Linux (RHEL 6 and CentOS 7) Go to the Linux Command Line and edit the firewall rule configuration file iptables.Vi/etc/sysconfig/iptables The following is an example of whitelist settings: # Firewall configuration written by system-config-securitylevel# Manual customization of this file is not recommended.* Filter: Input accept [0: 0]: Forward accept [0: 0]: Output accept

Set a firewall whitelist in Linux (RHEL 6 and CentOS 7) Go to the Linux Command Line and edit the firewall rule configuration file iptables.Vi/etc/sysconfig/iptables The following is an example of whitelist settings: # Firewall configuration written by system-config-securitylevel# Manual customization of this file is not recommended.*filter:INPUT ACCEPT [0:0]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [0:0]:RH-Fire

Install MySQL5.5 and centosmysql5.5 in RPM Mode Under CentOS/RHEL 6 + Go to http://dev.mysql.com/downloads/mysql/5.5.html#downloads: Download the following three files respectively (because my machine is 32-bit, the following is a 32-bit package. If your machine is 64-bit, please download the 64-bit version ): MySQL-server-5.5.16-1.rhel5.i386.rpm MySQL-client-5.5.16-1.rhel4.i386.rpm MySQL-devel-5.5.16-1.rhe

rh-firewall-1-input-m State--state new-m tcp-p TCP--dport 22-j accept-a rh-firewall-1-input-m State--stat E new-m tcp-p tcp--dport 4750-j accept-a rh-firewall-1-input-m State--state new-m tcp-p TCP--dport 3306-j List-a rh-firewall-1-input-j REJECT--reject-with icmp-host-prohibited COMMIT The part of the white list is set: -N Whitelist -a whitelist-s 10.202.106.1-j ACCEPT -a whitelist-s 10.202.106.2-j ACCEPT -a whitelist-s 10. 202.106.3-j ACCEPT -a whitelist-s 10.202.106.4-j ACCEPT-a

Scientific Linux (SL) and Oracle Linux. 2. differences between RHEL/CentOS and other Linux releases The main difference between different Linux releases is the package manager. The Red Hat Package Manager is yum (rpm). the package manager of other Linux distributions is related to the release version. for example, Debian (Ubuntu) uses apt-get and Suse uses Yast2, and so on. In addition, due to the customization of Linux, there are some differences

UNIX 3 [] STREAM CONNECTED 140210 4700/xvnc @/tmp/. X11-unix/x1 3, if the use of vnc-viewer expected to appear graphical interface (6.x is the default graphical interface, do not adjust), you need to make the following adjustments (add two lines). # vi/etc/sysconfig/vncservers # vncservers= "2:myusername" # vncserverargs[2]= "-geometry 800x600-nolisten tcp-

Oracle Installing Oracle 10g on RHEL as 3 step-by-step--Reprint Author: fenng Installing Oracle 10g on Red Hat Enterprise Linux Advanced Server 3 (RHEL 3) V 0.21 Oracle's 10g database and Oracle RAC have created a new world in the Tpc-h benchmark in the US-California head

30 things to be done after minimal RHEL/CentOS 7 installation (3)30 things to be done after minimal RHEL/CentOS 7 installation (3) 12. install Apache Tomcat Tomcat is a servlet container designed by Apache to run Java HTTP web servers. Install tomcat as follows, but note that Java must be installed before tomcat is ins