CentOS server deployment (YUM)

Mount the disk##

Mounted disk space size

df -h

1 ) View disk partition information

fdisk -l

Appears similar

Disk/dev/vdb：1073.7 GB,1073741824000 bytes, 2097152000 sectors
Units =Sector of1*512=512 bytes
Sector size(logic/physical): 512 bytes/512 bytes
I/O size(The smallest/optimal): 512 bytes/512 bytes

1. If the disk is /dev/vdb format partition

mkfs.ext4 /dev/vdb

3. Mount after formatting

mkdir /data
mount /dev/vdb /data

4. Auto mount at boot

After the above configuration, the disk will not be automatically mounted after booting. The configuration for automatic mounting is as follows

vim /etc/fstab

Add at the end of the file

/dev/vdb    /data    ext4    defaults    00

Save and exit ESC``:wq

5. Check the remaining space of the disk

df -hl

Ali YUM Mirror##

1. Backup

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2. Download the new CentOS-Base.repo to /etc/yum.repos.d/

• CentOS 7
  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
• CentOS 6
  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
• CentOS 5
  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

3. Generate cache

yum makecache

Configure time synchronization##

1. Install chrony (time synchronization client)

Centos/redhat/alios:

yum install -y chrony

ubuntu/debian:

apt-get install chrony

1. Delete the default server

sed -i "/server/d"/etc/chrony.conf

1. Open /etc/chrony.conf and add a new line

vim /etc/chrony.conf

Add to

server ntp.aliyun.com iburst

1. Restart chrony

systemctl restart chronyd

or

service chronyd restart

1. Check if it is normal

chronyc tracking

or

date

6. boot

CentOS7

systemctl enable chronyd.service

CentOS6

chkconfig chronyd on

Service Operation Command##

View application location##

whereis nginx

Connect to Linux

ssh [email protected]

root is the username
112.112.112.112 Server ip

Restart the system##

reboot

Memcached

Install Memcached

Installation dependencies

yum install -y libevent libevent-deve

Install MemCached

yum install memcached

Run Memcached

CentOS7

systemctl restart memcached

CentOS6

service memcached start

or

/usr/bin/memcached -p 11211-u root -m 256-c 10240

Basic settings of memcached:

• • p listening port
• • l The connected IP address, the default is this machine
• • d start start memcached service
• • d restart restart memcached service
• • d stop|shutdown Shut down the running memcached service
• • d install install memcached service
• • d uninstall uninstall memcached service
• • u Run as (only effective when running as root)
• • m Maximum memory usage, in MB. Default 64MB
• • M returns an error when the memory is exhausted instead of deleting the item
• • c The maximum number of simultaneous connections, the default is 1024
• • f Block size growth factor, the default is 1.25
• • n Minimum allocated space, key+value+flags is 48 by default
• • h show help

Configuration path

CentOS7

vim /etc/sysconfig/memcached

CentOS6

vim /etc/init.d/memcached

shut down

pkill -9 memcached

Set boot up

CentOS7

systemctl enable memcached.service

CentOS6

chkconfig memcached on

Cancel startup

CentOS7

systemctl disable memcached.service

CentOS6

chkconfig memcached off

JDK

Official download of JDK URL

Or link: https://pan.baidu.com/s/1JdPCMMEq178hXV5V4Ild3Q Password: 03l1

For example, the downloaded file is jdk-8u221-linux-x64.rpm

Change file permissions

chmod 755 jdk-8u221-linux-x64.rpm

installation

rpm -ivh jdk-8u221-linux-x64.rpm

The path after installation is /usr/java/jdk1.8.0_221-amd64

Delete Files

rm jdk-8u221-linux-x64.rpm

Query java version

java -version

View java-home

echo $JAVA_HOME

If it is empty, configure java-home, otherwise you cannot configure Tomcat as a service

Open the file /etc/profile

vi /etc/profile

Add at the end of the profile file:

export JAVA_HOME=/usr/java/jdk1.8.0_221-amd64 
export PATH=$JAVA_HOME/bin:$PATH   
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

Configuration takes effect immediately

source /etc/profile

Tomcat7(yum way)

Inquire

yum list tomcat*

installation

yum -y install tomcat

Start tomcat

service tomcat start

Set to boot

chkconfig tomcat on

The default tomcat folder path

cd /usr/share/tomcat

Tomcat8 (non-yum mode)

(1) download

If the download address is not available, get a new address from http://tomcat.apache.org/

wget http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.42/bin/apache-tomcat-8.5.42.tar.gz

(2) installation

tar -xzvf apache-tomcat-8.5.42.tar.gz
mv apache-tomcat-8.5.42/opt/tomcat8

run

cd /opt/tomcat8/bin
. /startup.sh

(3) Configuration

It is not safe to use root in a production environment, so

useradd -s /sbin/nologin tomcat
chown -R tomcat:tomcat /opt/tomcat8

For service, start with the operating system

cd /opt/tomcat8/bin
tar -xzvf commons-daemon-native.tar.gz
cd commons-daemon-1.1.0-native-src/unix/./configure 
make
cp jsvc ../..
cd ../..

Error 1

configure: error: no acceptable C compiler found in $PATH

Solve 1

yum -y install gcc

Open daemon.sh

cd /opt/tomcat8/bin
vi daemon.sh

At the beginning of the text, which is below the comment, add the following five lines of content

# chkconfig:23451090 
# description: Starts and Stops the Tomcat daemon. 

JAVA_HOME=/usr/java/jdk1.8.0_201-amd64
CATALINA_HOME=/opt/tomcat8
CATALINA_OPTS="-Xms512m -Xmx1024m -XX:PermSize=128m -XX:MaxPermSize=256m"

Configure to prevent log Chinese garbled

Find JAVA_OPTS= and modify it to

JAVA_OPTS="-Dfile.encoding=UTF8 -Dsun.jnu.encoding=UTF8"

Save and exit

: wq

Add to service

cp daemon.sh /etc/init.d/tomcat8
chkconfig --add tomcat8

boot

chkconfig tomcat8 on

an examination

chkconfig --list|grep tomcat8

Start service

service tomcat8 start

Delete service

service tomcat8 stop
chkconfig tomcat8 off
chkconfig --del tomcat8
rm -rf /etc/init.d/tomcat8

Firewall add trust rules

open a file

vim /etc/sysconfig/iptables

Add rule

- A INPUT -m state --state NEW -m tcp -p tcp --dport 8080-j ACCEPT

Restart firewall

service iptables restart

Apache

Install Apache

yum install httpd httpd-devel

Uninstall

yum -y remove httpd*

Start apache

service httpd start

Set to boot

chkconfig httpd on

Reload configuration

service httpd reload

View version

httpd -v

Configuration file location /etc/httpd/conf/httpd.conf

Set up virtual host directory
Add at the end of the file

Listen 9999  
NameVirtualHost *:9999<VirtualHost *:9999>  
	ServerName localhost:9999  
	DocumentRoot "/data/staticFile"</VirtualHost>

PHP5.4

• Add source
  wget -q -O - http://www.atomicorp.com/installers/atomic | sh
• installation
  yum install php php-cli php-gd php-mysql php-eaccelerator php-zend-optimizer php-pear php-snmp php-bcmath php-mcrypt php-mhash php-soap php-xml php-xmlrpc
• Check version
  yum info php | grep Version

Server security software (install one)

Safety Dog###

Download and install

wget http://down.safedog.cn/safedog_linux64.tar.gz
tar xzvf safedog_linux64.tar.gz
cd safedog_an_linux64_2.8.19005/
chmod +x *.py
. /install.py

Missing component installation during installation in the previous step

• Need system command ‘locate’ to install safedog for linux.
  yum install -y mlocate
• Need system command ‘lsof’ to install safedog for linux.
  yum install -y lsof
• Need system command ‘dmidecode’ to install safedog for linux.
  yum install -y dmidecode
• Need system command ‘lspci’ to install safedog for linux.
  yum install -y pciutils

Login account (cannot log in temporarily)

sdcloud -u Service Cloud Account

Enter the operation interface

sdui

Suspended mirror###

Xmirror server side

A key installation

wget -O install.sh http://dl.xmirror.cn/a/install.sh && sh install.sh