JAVA后台部署常用命令

一、安装JDK

1.创建安装目录

[root@localhost local]# mkdir /usr/local/java/

2.解压到新建目录

[root@localhost local]# tar -zxvf jdk-8u171-linux-x64.tar.gz -C /usr/local/java/

[root@localhost local]# tar -zxvf  jdk-8u211-linux-x64.tar.gz -C /usr/local/java/

3.设置环境变量

打开文件

[root@localhost local]# vim /etc/profile

在文件末尾添加

export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

注: 进入编辑模式:ctrl+g;编辑:输入i ;退出编辑模式:esc;不保存退出文件: :q!;保存退出文件: :wq;

使环境变量生效

[root@localhost local]# source /etc/profile

添加软链接

[root@localhost local]# ln -s /usr/local/java/jdk1.8.0_211/bin/java /usr/bin/java

检查java版本

[root@localhost local]# java -version

二、Centos7安装Redis

1.安装gcc依赖

由于 redis 是用 C 语言开发,安装之前必先确认是否安装 gcc 环境(gcc -v),如果没有安装,执行以下命令进行安装

[root@localhost local]# cdall -y gcc 

### 2.下载并解压安装包

[root@localhost local]# wget http://download.redis.io/releases/redis-5.0.11.tar.gz

[root@localhost local]# tar -zxvf redis-5.0.11.tar.gz

3.cd切换到redis解压目录下,执行编译

[root@localhost local]# cd redis-5.0.11

[root@localhost redis-5.0.11]# make

4.安装并指定安装目录

[root@localhost redis-5.0.11]# make install PREFIX=/usr/local/redis

5.启动服务

5.1前台启动

[root@localhost redis-5.0.11]# cd /usr/local/redis/bin/

[root@localhost bin]# ./redis-server 

5.2后台启动

从 redis 的源码目录中复制 redis.conf 到 redis 的安装目录

[root@localhost bin]# cp /data/dam/software/redis-5.0.11/redis.conf /usr/local/redis/bin/

[root@localhost ~]# cp /home/redis/redis.conf /usr/local/redis/bin/

修改 redis.conf 文件,把 daemonize no 改为 daemonize yes

[root@localhost bin]# vi redis.conf

后台启动

[root@localhost bin]# ./redis-server redis.conf

6.设置开机启动

添加开机启动服务

[root@localhost bin]# vi /etc/systemd/system/redis.service

复制粘贴以下内容:

[Unit]
Description=redis-server
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/bin/redis.conf
PrivateTmp=true

[Install]
WantedBy=multi-user.target

注意:ExecStart配置成自己的路径

设置开机启动

[root@localhost bin]# systemctl daemon-reload

[root@localhost bin]# systemctl start redis.service

[root@localhost bin]# systemctl enable redis.service

创建 redis 命令软链接

[root@localhost ~]# ln -s /usr/local/redis/bin/redis-cli /usr/bin/redis

服务操作命令

[root@localhost ~]# systemctl start redis.service   #启动redis服务

[root@localhost ~]# systemctl stop redis.service   #停止redis服务

[root@localhost ~]# systemctl restart redis.service   #重新启动服务

[root@localhost ~]# systemctl status redis.service   #查看服务当前状态

[root@localhost ~]# systemctl enable redis.service   #设置开机自启动

[root@localhost ~]# systemctl disable redis.service   #停止开机自启动

三、centos7 安装zookeeper

1.下载安装包

 1)进入安装目录

[root@localhost ~]# cd /home/install/

 2)下载安装包

[root@localhost ~]# wget http://mirror.bit.edu.cn/apache/zookeeper/stable/apache-zookeeper-3.5.8-bin.tar.gz

2.解压安装

 1)解压至安装目录

//解压
[root@localhost ~]# tar -zxcf /home/install/apache-zookeeper-3.5.8-bin.tar.gz -C /usr/local/
//移动安装目录
[root@localhost ~]# mv /usr/local/apache-zookeeper-3.5.8-bin /usr/local/zookeeper

 2)拷贝样本配置为主配置,进入配置目录,赋值拷贝样本文件

[root@localhost ~]# cd /usr/local/zookeeper/conf/

[root@localhost ~]# cp zoo_sample.cfg zoo.cfg

 3)创建数据存储目录与日志目录

[root@localhost ~]# mkdir /home/zookeeper/data

[root@localhost ~]# mkdir /home/zookeeper/logs

​ 4)修改数据存储和日志目录

[root@localhost ~]# vim /usr/local/zookeeper/conf/zoo.cfg

3.配置zookeeper环境变量

 1)依赖JVM环境,所以JVM与zookeeper环境变量都要配置

[root@localhost ~]# vim /etc/profile

​ 2)在尾部加入或修改以下

export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
ZOOKEEPER_HOME=/home/zookeeper
PATH=$PATH:$ZOOKEEPER_HOME/bin
export PATH ZOOKEEPER_HOME PATH 

 3)使其生效

[root@localhost ~]# source /etc/profile

4.测试

 1)启动

[root@localhost ~]# /usr/local/zookeeper/bin/zkServer.sh start

 2)连接

[root@localhost ~]# /usr/local/zookeeper/bin/zkCli.sh

 3)增删改查

 4)其他,如查看指令帮助

[root@localhost ~]# help  

5.开机启动

​ 1)编辑zookeeper.service文件

[root@localhost ~]# vim /usr/lib/systemd/system/zookeeper.service 

[root@localhost ~]# vim /etc/systemd/system/zookeeper.service 

 加入如下内容

[Unit]
Description=zookeeper
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/zookeeper/bin/zkServer.sh start
ExecReload=/usr/local/zookeeper/bin/zkServer.sh restart
ExecStop=/usr/local/zookeeper/bin/zkServer.sh stop
[Install]
WantedBy=multi-user.target

 2)zookeeper.service文件生效

[root@localhost ~]# systemctl daemon-reload

 3)设置开机启动

[root@localhost ~]# systemctl enabled zookeeper.service

 4)启动

[root@localhost ~]# systemctl start zookeeper.service

​ 5)关闭

[root@localhost ~]# systemctl stop zookeeper.service

​ 6)重启

[root@localhost ~]# systemctl restart zookeeper.service

​ 7)查看是否开机启动

[root@localhost ~]# systemctl is-enabled zookeeper.service

​ 8)systemctl取消开机启动redis

[root@localhost ~]# systemctl disable zookeeper.service

四、centos7安装tomcat

1.准备工作

检查是否有java环境

[root@localhost ~]# java -version

下载tomcat 可本地下载后上传服务器 也可以用wget命令下载

[root@localhost ~]# wget http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.51/bin/apache-tomcat-8.5.51.tar.g

2.安装tomcat

​ 1)新建存放目录

[root@localhost ~]# mkdir /usr/local/tomcat

​ 2)拷贝下载好的 apache-tomcat-8.5.51.tar.gz 到 tomcat目录下

[root@localhost ~]# cp apache-tomcat-8.5.51.tar.gz /usr/local/tomcat/

​ 3)进入tomcat目录,并解压apache-tomcat-8.5.51.tar.gz

[root@localhost ~]# cd /usr/local/tomcat/

[root@localhost tomcat]# tar -zxvf apache-tomcat-8.5.51.tar.gz

​ 4)进入解压的tomcat包的bin目录,并启动tomcat

[root@localhost tomcat]# cd /usr/local/tomcat/apache-tomcat-8.5.51/bin/

[root@localhost bin]# ./catalina.sh start
或:
[root@localhost bin]# ./startup.sh

注: ./catalina.sh start 和 ./startup.sh 都能启动tomcat。使用 ./catalina.sh stop 或 ./shutdown.sh 停止tomcat。

3.服务相关命令

查看 tomcat进程

[root@localhost ~]# ps -ef |grep tomcat

杀掉进程

[root@localhost ~]# kill -9  PID

切换到tomcat目录

[root@localhost ~]# cd /data/tomcat/tomcat80/bin

启动命令/停止命令:

[root@localhost ~]# ./startup.sh

[root@localhost ~]# ./shutdown.sh

查看日志:

[root@localhost ~]# tail -f /data/tomcat/tomcat80/logs/catalina.out

新建备份文件夹

[root@localhost ~]# mkdir 123_bak

备份文件

[root@localhost ~]# mv /data/tomcat/tomcat80/webapps/dcmAdmin /data/ocbackup/123_bak/dcmAdmin

五、centos7安装mysql5.7

1.检查系统是否安装过mysql

[root@localhost ~]# rpm -qa|grep mysql

查询所有mysql 对应的文件夹,全部删除

[root@localhost ~]# whereis mysql

[root@localhost ~]# find / -name mysql

2.卸载CentOS7系统自带mariadb

[root@CDH-141 ~]# rpm -qa|grep mariadb

[root@CDH-141 ~]# rpm -e --nodeps mariadb-libs-5.5.44-2.el7.centos.x86_64

查看系统自带的Mariadb

[root@CDH-141 ~]# mariadb-libs-5.5.44-2.el7.centos.x86_64

删除etc目录下的my.cnf,一定要删掉,等下再重新建,之前我就用这个文件,后面改配置各种不生效

[root@CDH-141 ~]# rm /etc/my.cnf

3.检查有无安装过mysql 用户组

检查mysql 用户组是否存在

[root@localhost ~]# cat /etc/group | grep mysql

[root@localhost ~]# cat /etc/passwd |grep mysql

创建mysql 用户组和用户

[root@localhost ~]# groupadd mysql

[root@localhost ~]# useradd -r -g mysql mysql

4.下载安装,从官网安装下载

[root@localhost ~]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz

5.解压安装mysql

[root@localhost ~]# tar -zxvf mysql-5.7.31-linux-glibc2.12-x86_64.tar.gz
//顺便改一下名字
[root@localhost ~]# mv mysql-5.7.31-linux-glibc2.12-x86_64 mysql

6.更改mysql 目录下所有文件夹所属的用户组和用户,以及权限

[root@localhost ~]# chown -R mysql:mysql /usr/local/mysql

[root@localhost ~]# chmod -R 755 /usr/local/mysql

7.进入mysql/bin/目录,编译安装并初始化mysql,务必记住数据库管理员临时密码

[root@localhost ~]# ./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysq

8.编写配置文件 my.cnf ,并添加配置

进入配置文件

[root@localhost ~]# vi /etc/my.cnf

在插入模式下编写,完成后保存

[mysqld]
datadir=/usr/local/mysql/data
port = 3306
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
symbolic-links=0
max_connections=400
innodb_file_per_table=1

表名大小写不明感,敏感为

[root@localhost ~]# lower_case_table_names=1

9.启动mysql 服务器

查询服务

[root@localhost ~]# ps -ef|grep mysql

[root@localhost ~]# ps -ef|grep mysqld

结束进程

[root@localhost ~]# kill -9 PID

启动服务

[root@localhost ~]# /usr/local/mysql/support-files/mysql.server start

10.添加软链接,并重启mysql 服务

添加软链接

[root@localhost ~]# ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

[root@localhost ~]# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql

重启mysql服务

[root@localhost ~]# service mysql restart

11.登录mysql ,密码就是初始化时生成的临时密码

[root@localhost ~]# mysql -u root -p

12.修改密码,因为生成的初始化密码难记,注意: 分号(;) 结尾

[root@localhost ~]# set password for root@localhost = password('root');

13.开放远程连接

[root@localhost ~]# use mysql;

[root@localhost ~]# update user set user.Host='%' where user.User='root';

[root@localhost ~]# flush privileges;

14.设置开机自启

//将服务文件拷贝到init.d下,并重命名为mysql
[root@localhost ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
//赋予可执行权限
[root@localhost ~]# chmod +x /etc/init.d/mysqld
//添加服务
[root@localhost ~]# chkconfig --add mysqld
//显示服务列表
[root@localhost ~]# chkconfig --list

六、开始设置开机启动

1.修改/etc/rc.d/rc.local文档

[root@localhost ~]# vim /etc/rc.d/rc.local

2.在末行添加如下内容

[root@localhost ~]# export JAVA_HOME=/usr/java/jdk1.8.0_211

[root@localhost ~]# /home/ucenter/soft/tomcat-8080/bin/startup.sh

3.重启服务器

[root@localhost ~]# reboot

[root@localhost ~]# ps -ef|grep tomcat-8080

七、Centos7开放及查看端口

1.开放端口

[root@localhost ~]# firewall-cmd --zone=public --add-port=8081/tcp --permanent   # 开放5672端口

[root@localhost ~]# firewall-cmd --zone=public --remove-port=5672/tcp --permanent  #关闭5672端口

[root@localhost ~]# firewall-cmd --reload   # 配置立即生效

2.查看防火墙所有开放的端口

[root@localhost ~]# firewall-cmd --zone=public --list-ports

3..关闭防火墙

如果要开放的端口太多,嫌麻烦,可以关闭防火墙,安全性自行评估

[root@localhost ~]# systemctl stop firewalld.service

4.查看防火墙状态

[root@localhost ~]# firewall-cmd --state

5.查看监听的端口

[root@localhost ~]# netstat -lnpt
注:centos7默认没有 netstat 命令,需要安装 net-tools 工具,yum install -y net-tools

6.检查端口被哪个进程占用

[root@localhost ~]# netstat -lnpt |grep 5672

7.查看进程的详细信息

[root@localhost ~]# ps 6832

8.中止进程

[root@localhost ~]# kill -9 6832

9.mysql 创建用户

CREATE USER 'username'@'host' IDENTIFIED BY 'password'; 

CREATE USER 'dcm_oct'@'%' IDENTIFIED BY 'dcm_oct_admin'; 

10.授权

GRANT privileges ON databasename.tablename TO 'dcm_oct'@'%';

11.授权全部权限

GRANT ALL ON *.* TO 'dcm_oct'@'%'; 

REVOKE SELECT ON *.* FROM 'pig'@'%'; 

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