CentOS7安装openjdk、tomcat和mysql流程介绍

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首先是前戏,推荐一个远程工具Xshell和Xftp搭配使用,以下是Xshell的官网
http://www.netsarang.com/products/xsh_overview.html


1.openjdk

How to download and install prebuilt OpenJDK packages

JDK 8

Debian, Ubuntu, etc.

On the command line, type:

$ sudo apt-get install openjdk-8-jre

The openjdk-8-jre package contains just the Java Runtime Environment. If you want to develop Java programs then please install the openjdk-8-jdk package.

Fedora, Oracle Linux, Red Hat Enterprise Linux, etc.

On the command line, type:

$ su -c “yum install java-1.8.0-openjdk”

The java-1.8.0-openjdk package contains just the Java Runtime Environment. If you want to develop Java programs then install the java-1.8.0-openjdk-devel package.

以上说了不同系统的安装方式,还指出命令只是安装了JRE,如果你需要开发应用程序,还需要另外安装(已经用加粗标识),想安装其它版本详情看openjdk官网介绍
http://openjdk.java.net/install/

[root@VM_207_229_centos ~]# java -versionopenjdk version "1.8.0_71"OpenJDK Runtime Environment (build 1.8.0_71-b15)OpenJDK 64-Bit Server VM (build 25.71-b15, mixed mode)

2.tomcat

# cd /usr/local# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.0.36/bin/apache-tomcat-8.0.36.tar.gz# tar xzf apache-tomcat-8.0.36.tar.gz# mv apache-tomcat-8.0.36 tomcat# lsapache-tomcat-8.0.36.tar.gz  etc    include  lib64    logs    sa    share  tomcat   bin   games  lib   libexec  qcloud  sbin  src

个人习惯把tomcat放在/user/local下,下载后解压,再更名为tomcat
想要其它版本的话……在以下地址找好路径下载
https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/

修改配置文件conf/server.xml改为监听80端口,默认编码utf-8,并开启gzip压缩

<Connector port="80" protocol="HTTP/1.1"               connectionTimeout="20000"               redirectPort="8443" executor="tomcatThreadPool" URIEncoding="utf-8"                  compression="on"                  compressionMinSize="50" noCompressionUserAgents="gozilla, traviata"                  compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain" />    <!-- A "Connector" using the shared thread pool-->

启动tomcat,在浏览器输入ip地址访问,看到tomcat小猫页面就行了。CentOS7开放80端口,Centos 7使用firewalld代替了原来的iptables。

<!-- 启动防火墙 --># systemctl start  firewalld<!-- 开启80端口,出现success表明添加成功 --># firewall-cmd --zone=public --add-port=80/tcp --permanent<!-- 重启防火墙 --># systemctl restart firewalld.service<!-- 检查端口 --># firewall-cmd --permanent --zone=public --list-ports<!-- 自启动防火墙 -->#systemctl enable firewalld

还有更改默认访问地址,不想见到tomcat小猫(此步骤看个人需要

<Engine name="Catalina" defaultHost="www.caihongwen.cn">     <Realm className="org.apache.catalina.realm.LockOutRealm">       <Realm className="org.apache.catalina.realm.UserDatabaseRealm"               resourceName="UserDatabase"/>      </Realm>      <Host name="www.caihongwen.cn"  appBase="webapps"            unpackWARs="true" autoDeploy="true">        <Context docBase="blog" path="" debug="0"  reloadable="true"/>               <!-- Access log processes all example.             Documentation at: /docs/config/valve.html             Note: The pattern used is equivalent to using pattern="common" -->        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"               prefix="localhost_access_log" suffix=".txt"               pattern="%h %l %u %t &quot;%r&quot; %s %b" />      </Host>    </Engine>

请在意Host之间添加了一段代码

<Context docBase="blog" path="" debug="0"  reloadable="true"/>

这个blog是放在webapps的项目war包名,通过ip或域名直接进入博客,不会出现tomcat小猫管理页面,第一次启动tomcat稍慢,新增加的war包需要重启一次才能起效。还有一个要点是对外开启80端口


3.mysql

使用RPM包进行安装,这种安装进程会自动完成系统的相关配置,比较方便。
另外有.tar.gz的压缩文件安装方式,推荐一个博客的介绍。
http://blog.csdn.net/superchanon/article/details/8546254/

卸载原有MySQL或者Mariadb安装程序
1、CentOs7版本默认情况下安装了mariadb-libs,必须先卸载才可以继续安装MySql。
a) 查找以前是否安装mariadb-libs

# rpm -qa | grep -i mariadb-libs

b)卸载已经安装的mariadb-libs

# yum remove mariadb-libs-5.5.44-2.el7.centos.x86_64

2、查找以前是否安装MySQL

 # rpm -qa | grep -i mysql

有的话,也删除

安装MySQL

# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm# rpm -ivh mysql-community-release-el7-5.noarch.rpm# yum install mysql-community-server

成功安装之后重启mysql服务

# service mysqld restart

初次安装mysql是root账户是没有密码的,设置密码的方法

# mysql -urootmysql> set password for 'root'@'localhost' = password('mypasswd');

远程授权连接mysql

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'mypasswd' WITH GRANT OPTION;FLUSH   PRIVILEGES;

修改mysql默认编码

# vim /etc/my.cnf

作出以下修改

[client]default-character-set=utf8[mysqld]character_set_server=utf8

然后重启mysql

# service mysqld restart# mysql -uroot -pmysql> show variables like 'character%';+--------------------------+----------------------------+| Variable_name            | Value                      |+--------------------------+----------------------------+| character_set_client     | utf8                       || character_set_connection | utf8                       || character_set_database   | utf8                       || character_set_filesystem | binary                     || character_set_results    | utf8                       || character_set_server     | utf8                       || character_set_system     | utf8                       || character_sets_dir       | /usr/share/mysql/charsets/ |+--------------------------+----------------------------+8 rows in set (0.00 sec)mysql> show variables like 'collation%';+----------------------+-----------------+| Variable_name        | Value           |+----------------------+-----------------+| collation_connection | utf8_general_ci || collation_database   | utf8_general_ci || collation_server     | utf8_general_ci |+----------------------+-----------------+3 rows in set (0.00 sec)

安装mysql-jdbc驱动

# yum install mysql-connector-java

完工!!!

远程连接mysql,如果连接不上的话,可能是没开放3306端口。
最后,分享一个mysql远程管理神器navicat,你懂的
http://pan.baidu.com/s/1mh87vGc


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