Starting from scratch - building a java application deployment environment on Alibaba Cloud Services

​ Starting from scratch - building a java application deployment environment on Alibaba Cloud Services

Preparation

Download and install FinalShell to facilitate local connection to cloud services and upload files

FinalShell download address: https://www.hostbuf.com/c/131.html

1. jdk installation and deployment

jdk official download: https://www.oracle.com/java/technologies/downloads/

1.1 Uninstall the jdk that comes with the system

Check the jdk that comes with the system: rpm -qa | grep jdk

Uninstall the built-in jdk: rpm -e --nodeps JDK to be uninstalled

1.2 Upload jdk and decompress jdk

Create an installation directory (used to be placed in the /usr/local directory): mkdir java

Upload the directory created by the jdk compressed package

Decompress the jdk compressed package: tar -zxvf jdk compressed package

1.3 Configure jdk environment variables

Edit profile file: vim /etc/profile

Add the following configuration to the last line

JAVA_HOME=/usr/local/java/jdk1.8.0_371
CLASSPATH=$JAVA_HOME/lib/
PATH=$PATH:$JAVA_HOME/bin
export PATH JAVA_HOME CLASSPATH

Let the configuration file take effect: source /etc/profile

Two, mydql5.7 database installation

Mysql download address: https://downloads.mysql.com/archives/community/

2.1 Uninstall mysql, Mariadb that comes with the system

View the mysql that comes with the system: rpm -qa | grep mysql

Uninstall the built-in mysql: rpm -e --nodeps file name

Query all mysql folders: whereis mysql and find / -name mysql

Delete the relative directory: rm -rf the absolute path of the file

2.2 Create mysql user group and mysql user

Check if the mysql group and user exist: cat /etc/group | grep mysql or cat /etc/passwd | grep mysql

Create a mysql user group: groupadd mysql

Create a user named mysql and join the mysql user group: useradd -g mysql mysql

Modify user password: passwd mysql

2.3 Upload and decompress the mysql compressed package, and authorize the mysql user

Decompression: tar -zxvf mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz

授权：chown mysql.mysql /usr/local/mysql -R

2.4 Add the my.cnf configuration file in the /etc directory

[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8 
[mysqld]
skip-name-resolve
#设置3306端口
port = 3306 
# 设置mysql的安装目录
basedir=/usr/local/mysql/mysql-5.7.31
# 设置mysql数据库的数据的存放目录
datadir=/usr/local/mysql/mysql-5.7.31/data
# 允许最大连接数
max_connections=200
# 服务端使用的字符集默认为8比特编码的latin1字符集
character-set-server=utf8
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB 
lower_case_table_names=1
max_allowed_packet=16M

2.5 Installation and initialization

初始化mysql：./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/mysql-5.7.31/mysql/ --datadir=/usr/local/mysql/mysql-5.7.31/data/

如果出现./bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

You need to install libaio.so.1: yum install libaio

Copy the file: cp ./support-files/mysql.server /etc/init.d/mysqld

Authorization:

chown 777 /etc/my.cnf

chmod +x /etc/init.d/mysqld

Restart the mysql service: /etc/init.d/mysqld restart

Soft connection (login to mysql in any directory): ln -s /usr/local/mysql/mysql-5.7.31/bin/mysql /usr/bin/mysql

2.6 Set the startup

chkconfig --level 35 mysqld on

chkconfig --list mysqld

chmod +x /etc/rc.d/init.d/mysqld

chkconfig --add mysqld

service mysqld status

2.7 Configure environment variables

JAVA_HOME=/usr/local/java/jdk1.8.0_11
MYSQL_HOME=/usr/local/mysql/mysql-5.7.31
CLASSPATH=$JAVA_HOME/lib/
PATH=$PATH:$JAVA_HOME/bin:$MYSQL_HOME/bin
export PATH JAVA_HOME CLASSPATH

2.8 Login data

Get the initialization password: **cat /root/.mysql_secret**

Log in to the database: mysql -uroot -p

Reset password: set PASSWORD = PASSWORD('root777');

Flush privileges: flush privileges;

Replace the database: use mysql;

View the database user address: select host,user from user;

Modify root user access rights: update user set host='%' where user='root';

2.9 Create a new user

Delete user: **DROP USER 'goryleee'@'%'; **

Create a user: CREATE USER 'username'@'host' IDENTIFIED BY 'password';

Authorization: GRANT ALL ON . TO 'pig'@'%'; or GRANT SELECT, INSERT ON test.user TO 'pig'@'%';

Revoke user privileges: REVOKE privilege ON databasename.tablename FROM 'username'@'host';

Modify user password: SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');

View user permissions: **SHOW GRANTS FOR 'pig'@'%'; **

3. Redis installation

Download address: http://download.redis.io/releases

3.1 Upload and decompress redis

tar -zvxf redis-6.2.5.tar.gz

3.2 Compile and install (enter the redis root directory)

Execute: make

Enter src, execute: make install

Start the service: ./redis-server …/redis.conf

3.3 Set background execution and modify password

Modify the configuration file: vim redis.conf

// 注释监听ip，不然本地无法连接redis
#bind 127.0.0.1
// 修改保护模式，不修改保护模式也是只能内网访问的 protected-mode yes 改成 protected-mode no
protected-mode no
// 设置密码，这里建议设置密码，否则可能会发生一些预料不到的事情，因为6379端口有漏洞
requirepass "你的密码"
// daemonize no 改为yes 后台一直运行
daemonize yes

3.4 Add redis to the systemctl service, and set it to start automatically

Create a new redis.service under /etc/systemd/system

Where /usr/local/redis/redis-6.2.5 is the path where you installed redis

[Unit]
Description=Redis
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/redis/redis-6.2.5/src/redis-server /usr/local/redis/redis-6.2.5/redis.conf
ExecReload=/usr/local/redis/redis-6.2.5/src/redis-server -s reload
ExecStop=/usr/local/redis/redis-6.2.5/src/redis-server -s stop
PrivateTmp=true

[Install]
WantedBy=multi-user.target

Reload the service configuration file: systemctl daemon-reload

Start redis: systemctl start redis

View redis service status: service redis status

Set boot startup: systemctl enable redis.service

systemctl disable redis.service         # 取消开机自启
systemctl start redis.service　         # 启动redis服务
systemctl stop redis.service　          # 停止服务
systemctl restart redis.service　       # 重新启动服务
systemctl status redis.service          # 查看服务当前状态
systemctl list-units --type=service     # 查看所有已启动的服务
systemctl daemon-reload                 # 加载服务配置文件

Four, nginx installation

Download address: https://nginx.org/en/download.html

4.1 Prepare the make environment

执行：yum -y install gcc gcc-c++ automake autoconf libtool make

4.2 Prepare the nginx environment

Install pcre: yum -y install pcre pcre-devel

安装zlib：yum -y install zlib zlib-devel

安装openssl ：yum -y install openssl openssl-devel

4.3 Upload and decompress nginx

Decompression: tar -zvxf nginx-1.20.2.tar.gz

Enter the nginx root directory: cd /usr/local/nginx/nginx-1.20.2

Execute: **./configure**

compile: make

Installation: **make install**

4.4 start nginx

Execute: cd /usr/local/nginx/sbin

Start the nginx service: **./nginx**

Close nginx service: ./nginx -s stop

Restart the nginx service: ./nginx -s reload

Detection configuration file: nginx -t -c ~/youSite.conf

4.5 Set nginx to start automatically at boot – preparations

Copy nginx.conf, mime.types files to /etc/nginx/: cd /usr/local/nginx/conf/

Execute: cp nginx.conf /etc/nginx/ ** cp mime.types /etc/nginx/ **

Create init.d control command, vi /etc/init.d/nginx , the content is as follows

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  NGINX is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

make_dirs() {
   # make required directories
   user=`$nginx -V 2>&1 | grep "configure arguments:.*--user=" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`
   if [ -n "$user" ]; then
      if [ -z "`grep $user /etc/passwd`" ]; then
         useradd -M -s /bin/nologin $user
      fi
      options=`$nginx -V 2>&1 | grep 'configure arguments:'`
      for opt in $options; do
          if [ `echo $opt | grep '.*-temp-path'` ]; then
              value=`echo $opt | cut -d "=" -f 2`
              if [ ! -d "$value" ]; then
                  # echo "creating" $value
                  mkdir -p $value && chown -R $user $value
              fi
          fi
       done
    fi
}

start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    make_dirs
    echo -n $"Starting $prog: "
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc $prog -QUIT
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest || return $?
    stop
    sleep 1
    start
}

reload() {
    configtest || return $?
    echo -n $"Reloading $prog: "
    killproc $prog -HUP
    retval=$?
    echo
}

force_reload() {
    restart
}

configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
            ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
        exit 2
esac

Note: the following two need to be modified

nginx="/usr/local/nginx/sbin/nginx" #修改成nginx执行程序的路径。
NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf" #修改成nginx.conf文件的路径。

Set permissions: chmod a+x /etc/init.d/nginx

After setting, you can execute the following command

/etc/init.d/nginx start
/etc/init.d/nginx stop
/etc/init.d/nginx restart

4.6 Set nginx to start automatically

Add to service, use service to control nginx: chkconfig --add /etc/init.d/nginx

To set boot up automatically, execute: chkconfig nginx on