CentOS6.2 system basic software environment Configuration tutorial

1. install CentOS6.2 System 1. select Desktop for installation. note: If the host name is changed, add the configured host name to the/etc/hosts file. 2. ssh security settings (configuration file: /etc/ssh/sshd_config): 1) change the default Port 22: remove the Port comment, such as: 221232) disable root account logon: remove the PermitRootLoginyes comment and change it to PermitRo.

1. install CentOS6.2

1. select Desktop for installation

Note: If you have modified the host name, you need to add the configured host name to the/etc/hosts file.

2. ssh security settings (Configuration File:/etc/ssh/sshd_config ):

1) change the default Port 22: remove the Port comment, for example, 22123.

2) disable root account logon: remove the PermitRootLogin yes annotation and change it to PermitRootLogin no.

3) add an SSH logon user and log on to the root user after successful logon:

 
 

  
  
# useradd xiaoma
  
  
# passwd xiaoma
 
 

Then modify the ssh configuration file and add: AllowUsers xiaoma.

4) restart the SSH service: service sshd restart

5) change the firewall configuration and allow port 22123 to be added to:-a input-m state? State NEW-m tcp-p tcp? Dport 22123-j ACCEPT, and restart the firewall to take effect: service iptables restart

2. software environment configuration

1. install the compiling environment:

 
 

  
  
# yum install gcc gcc-c++
 
 

Note: the proxy accesses the internet. command line: export http_proxy = http: // ip: port

2. install necessary libraries

 
 

  
  
# yum install ncurses-devel zlib-devel libjpeg* libpng* freetype*
 
 

Note: ncurses-devel? Compile and install mysql5.5
Zlib-devel? Compile and install httpd
Libjpeg *, libpng *, freetype *? Compile and install php

3. install clamAV antivirus software

 
 

  
  
# tar xzf clamav-0.97.4.tar.gz
  
  
# cd clamav-0.97.4
  
  
# ./configure --prefix=/usr/local/clamav --disable-clamav
  
  
# make
  
  
# make install
  
  

  
  
# groupadd clamav
  
  
# useradd -g clamav clamav
  
  
# chown -R clamav.clamav /usr/local/clamav
 
 

Operation example:
1) update the virus database: bin/freshclam (you need to modify the etc/freshclam. conf file to comment out the Example line)
2) scan the specified directory: bin/clamscan? Bell-I-r/usr/local

4. install JDK

 
 

  
  
# chmod +x jdk-6u33-linux-i586.bin
  
  
# ./jdk-6u33-linux-i586.bin
  
  
# mv jdk1.6.0_33/ /usr/local
 
 

Set JDK environment variables. add the following configuration to the/etc/profile file:

 
 

  
  
JAVA_HOME=/usr/local/jdk1.6.0_33
  
  
export JAVA_HOME
  
  
export PATH=/usr/local/mysql5/bin:$JAVA_HOME/bin:$PATH
 
 

Then update the environment variable to make it take effect:

 
 

  
  
# source /etc/profile
 
 

View the installed java version:

 
 

  
  
# java -version
 
 

5. install Mysql5.5 (mysql5.5 requires cmake compilation and cmake installation first)

 
 

  
  
# tar xzf cmake-2.8.7.tar.gz
  
  
# cd cmake-2.8.7
  
  
# ./configure
  
  
# make && make install
  
  

  
  
# mkdir -p /usr/local/mysql5
  
  
# groupadd mysql
  
  
# useradd -g mysql mysql
  
  
# chown mysql.mysql -R /usr/local/mysql5
  
  

  
  
# tar xzf mysql-5.5.19.tar.gz
  
  
# cd mysql-5.5.19/
  
  
# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql5 -DMYSQL_UNIX_ADDR=/usr/local/mysql5/mysql.sock -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_EXTRA_CHARSETS=all -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_MEMORY_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DENABLED_LOCAL_INFILE=1 -DMYSQL_DATADIR=/usr/local/mysql5/data -DMYSQL_USER=mysql -DMYSQL_TCP_PORT=3306
  
  
# make
  
  
# make install
 
 

Configure Mysql as follows:

 
 

  
  
# cp support-files/my-medium.cnf /etc/my.cnf
  
  
# chmod 755 scripts/mysql_install_db
  
  
# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql5 --datadir=/usr/local/mysql5/data
  
  

  
  
# cp support-files/mysql.server /etc/init.d/mysql
  
  
# chmod 755 /etc/init.d/mysql
  
  
# chkconfig mysql on
 
 

Start mysql and set the root account password:

 
 

  
  
#/Etc/init. d/mysql start or service mysql start
  
  
#/Usr/local/mysql5/bin/mysqladmin-uroot password 'root'
 
 

Add Environment variables and add the following to the/etc/profile file:

 
 

  
  
export PATH=/usr/local/mysql5/bin:$PATH
 
 

Modify the default maximum number of connections of mysql (only 151 by default). open/etc/my. in the cnf file, add max_connections = 1000 under [mysqld], and then restart mysql to take effect. check the maximum number of connections:

 
 

  
  
mysql>show VARIABLESLIKE'%conn%';
 
 

6. install httpd

 
 

  
  
# tar xzf httpd-2.2.21.tar.gz
  
  
# cd httpd-2.2.21/
  
  
# cd srclib/apr
  
  
# ./configure --prefix=/usr/local/apr
  
  
# make
  
  
# make install
  
  

  
  
# cd ../apr-util
  
  
# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
  
  
# make
  
  
# make install
  
  

  
  
# cd ../..
  
  
# ./configure --prefix=/usr/local/apache2 --enable-so --enable-mods-shared=all --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util --enable-dav --enable-proxy --enable-proxy-ajp
  
  
# make
  
  
# make install
 
 

Start httpd and access http: // ip for testing (note that Port 80 must be enabled for iptables ):

 
 

  
  
# /usr/local/apache2/bin/apachectl start
 
 

To disable access to a directory, you can create a. htaccess file under the Directory and enter the following content:

 
 

  
  
order allow,deny
  
  
deny from all
 
 

7. install php

 
 

  
  
# tar xzf libxml2-2.7.5.tar.gz
  
  
# cd libxml2-2.7.5
  
  
# ./configure --prefix=/usr/local/libxml2
  
  
# make
  
  
# make install
  
  

  
  
# cd ..
  
  
# rpm -qa php
  
  
# rpm -e --nodeps --allmatches php-5.1.6-27.el5
  
  
# tar xzf php-5.3.1.tar.gz
  
  
# cd php-5.3.1
  
  
# ./configure --prefix=/usr/local/php5 --with-libxml-dir=/usr/local/libxml2/ --with-mysql=/usr/local/mysql5/ --with-apxs2=/usr/local/apache2/bin/apxs  --with-mbstring --enable-mbstring=all --with-gd
  
  
# make
  
  
# make install
  
  
# cp php.ini-production /usr/local/php5/lib/php.ini
 
 

Modify the httpd. conf file:

1) add a line after AddType application/x-gzip. gz. tgz: AddType application/x-httpd-php. php
2) add index. php after DirectoryIndex index.html

Restart httpd to make php take effect!

8. install Tomcat 7

 
 

  
  
# unzip -q apache-tomcat-7.0.23.zip
  
  
# mv apache-tomcat-7.0.23 tomcat-7
 
 

Configure the tomcat virtual host, open the conf/server. xml configuration file, and add the following sections (add multiple sections as follows ):

 
 

  
  
 
  
  
unpackWARs="true"autoDeploy="true">
  
  
chinapis.com
  
  
 
  
  

 
 

After tomcat is configured, you also need to configure the apache VM File (conf/extra/httpd-vhosts.conf ):

 
 

  
  
 
  
  
    DocumentRoot "/kington/webapps/chinapis"
  
  
    ServerName www.mzone.cc
  
  
    ServerAlias mzone.cc
  
  

  
  
    ErrorLog "| /usr/local/apache2/bin/rotatelogs /usr/local/apache2/logs/mzone.cc_%Y-%m-%d_error_log 86400 480"
  
  
    CustomLog "| /usr/local/apache2/bin/rotatelogs /usr/local/apache2/logs/mzone.cc_%Y-%m-%d_access_log 86400 480" common
  
  

  
  
    ProxyPass /images/ !
  
  
    ProxyPass /styles/ !
  
  

  
  
    ProxyPreserveHost On
  
  
    ProxyPass / ajp://localhost:8009/
  
  
    ProxyPassReverse / ajp://localhost:8009/
  
  

 
 

The preceding configurations are described as follows:

1) ErrorLog and CustomLog configure the polling time of log files (86400 indicates that the second is a day, and 480 is the time zone offset)

III. FAQs

1. when compiling and installing php, the following error occurs: configure: error: libpng. (a | so) not found. first, install each dependent component (libjpeg, libpng, and freetype), and then perform the following processing:

 
 

  
  
# ln -s /usr/lib64/libjpeg.so /usr/lib/
  
  
# ln -s /usr/lib64/libpng.so /usr/lib/
 
 

2, decompress the bin format jdk when the error:/lib/ld-linux.so.2: bad ELF interpreter, need to install some of the missing files:

 
 

  
  
# yum install ld-linux.so.2