OA environment for Linux system issued

View the system release version of Linux

Cat/etc/issue

Cat/etc/redhat-release

View the system of the CPU

Top (Press the number keys 1, 2, 3 to switch the case of each CPU, if only 1 CPUs represent a single core)

To see the remaining memory size, there is a formula: the cache in Buffer=swp in Free+mem in Mem is the remaining memory size

View disk usage Df-h

/proc file directory generally put some hardware information

Cat/proc/cpuinfo Viewing CPU information

Cat/proc/meminfo (top or Vmstat view resource information is read from/proc/meminfo)

Preparing for the environment before deployment

Stop the firewall

A test environment is a general shutdown firewall. Firewall against themselves, put others. Current network (online) only need to open the firewall

Boot (DOS is msconfig)

The kernel of the Linux operating system is loaded into memory, waiting for the kernel to load successfully, the first program to run is the INIT program.

The init process is the first running process outside of a kernel process that determines the runlevel to be started, so its PID is: Init reads its configuration file is the/etc/inittab init process is the root process in the Linux system, and is the ancestor of all system processes

0) Downtime, machine shutdown, system shutdown status, the system default operation level cannot be set to 0, otherwise it will not start normally

1) Single user mode is a bit like Windows Safe Mode (F8 entry) Single user working state, root privilege, for system maintenance, prohibit remote login

2) Multi-user mode, but no network

3) No graphics (login after entering console command line mode) only network multi-user mode

4) unused system not used, reserved

5) A file in Linux that begins with a capital X, which refers to a graphical interface associated with a graphics-related GUI such as: X11, multi-user mode

6) Restart after booting, do not set, otherwise it will not start normally

Chkconfig--list Process Name (shows if the current service is booting)

Chkconfig--level 5 iptables off (change the operating mode of the service)

Chkconfig--level iptables off (Level5 when the level of LEVEL3 and iptables is switched off)

3, SELinux (security components): is a security enhancement tool, control

User access mechanisms

Vim/etc/sysconfig/selinux set the SELinux enforcing setting to Disabled (enforcing | Permissive | Disabled

Setenforce 0 (temporarily close null value Access user security component)

Setenforce 1 set SELinux to become enforcing mode (SELinux)

Setenforce 0 Set SELinux to be permissive mode (turn SELinux off)/usr/sbin/sestatus view selinux status

Installing Jdk-rpm.bin

Using Rpm-qa | grep java

See if Java exists in the current machine

Using Rpm-qa | grep JDK

To see if a JDK exists in the current machine

If you have Java installed in your machine, you need to remove Java rpm-e plus Rpm-qa | grep Java Gets the Java file name if the hint has a dependency, you need to add--nodeps, regardless of whether there are dependencies to delete rpm-e--nodeps ....

Change the folder Jdk-1_5_0_22-linux-i586-rpm.bin under OA to an executable file

Chmod u+x Jdk-1_5_0_22-linux-i586-rpm.bin

See where the installation of the RPM-installed JDK is located

RPM-QL (plus the file name of the installation found using RPM-QA)

./jdk-1_5_0_22-linux-i586-rpm.bin

Set environment variable Vim/etc/profile ENTER system environment variable configuration document

Source/etc/profile Loading system environment variable configuration file Java

Enter Java to confirm configuration success

Install MySQL

CentOS and Redhat common to reach 99%, so with the source of CentOS can be used on the Redhat source and system version to correspond

Centos5-base-163.repo CP to/etc/yum.repos.d/

Get package information from remote, get to local

Yum List

installing MySQL yum install mysql-server, if a timeout occurs, it needs to be installed again,

Appears Warning:rpmts_hdrfromfdno

Because Redhat is a commercial version, a signature must be provided to continue the installation

$ rpm–import http://centos.ustc.edu.cn/centos/RPM-GPGKEY-CentOS-5

Then re-execute the Yum install Mysql-server

The show is done.

Installing Tomcat

Copy the apache-tomcat-6.0.33.tar.gz to the/pot/file

#tar ZXVF apache-tomcat-6.0.33.tar.gz Decompression

Unzip the Oa.zip to/opt/apache-tomcat-6.0.33/webapps.

Decompression Unzip Oa.zip

Move extract files to MV oa/opt/apache-tomcat-6.0.33/webapps/

Import data

Import data into MySQL and go to MySQL

Mysql>source

/opt/apachetomcat6.0.33/webapps/oa/setup/redmoonoa.sql

Modify a file

Modify the Proxool. XML file,

Modify Log4j.properties, modify

Ifconfig View IP Address

OA environment for Linux system issued