centos7 下部署Java EE项目运行环境
CentOS7.3部署环境搭建
一．虚拟机安装centos7.3
1. 新建虚拟机直接选择安装程序光盘映像文件：
2. 一直下一步，然后指定一下磁盘大小，再下一步后点击完成
3. 开启虚拟机 选择第一项进行安装 centos7.3
4. 语言选择简体中文
5. 本地化上 日期和时间->选择亚洲上海 键盘->选择汉语 语言支持->选择简体中文软件->选择本地介质 软件选择->GNOME桌面安装位置->选择自动分区网络连接名->选择并打开以太网最后点击开始安装
6. 安装界面选择设置root密码
7. 简单密码需要点击两次完成才能生效，等待安装完成
8. 安装完成重启系统，首次使用同意许可，设置独立用户名密码
二.安装tomcat8.0
1 准备工作
切换root用户登录，在usr文件夹下新建server目录，将apache-tomcat-8.0.20.tar.gz以及
jdk-7u80-linux-x64.rpm拷贝至文件夹下
2. 安装jdk
(1) 卸载预装openjdk环境
查看系统jdk信息命令： rpm -qa | grep java
Centos预装有jdk环境：openjdk，需要先卸载掉
命令：rpm -e –nodeps （卸载项）
如：
rpm -e --nodepsjava-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64
rpm -e --nodepsjavapackages-tools-3.4.1-11.el7.noarch
rpm -e --nodepsjava-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64
rpm -e --nodepstzdata-java-2016g-2.el7.noarch
rpm -e --nodepspython-javapackages-3.4.1-11.el7.noarch
rpm -e --nodepsjava-1.7.0-openjdk-headless-1.7.0.111-2.6.7.8.el7.x86_64
rpm -e --nodepsjava-1.7.0-openjdk-1.7.0.111-2.6.7.8.el7.x86_64
卸载完毕后，继续执行命令：rpm -qa | grep java
说明卸载完毕了
(2) 安装java se jdk环境
命令： rpm -ivhjdk-7u80-linux-x64.rpm
JDK默认安装在/usr/java中
查看jdk是否安装成功
命令: java
Javac
Java–version
使用gedit打开 etc目录下的profile
追加一下内容并保存：
JAVA_HOME=/usr/java/jdk1.7.0_80
JRE_HOME=/usr/java/jdk1.7.0_80/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH
执行一下命令:
source /etc/profile 使修改立即生效
echo $PATH 查看PATH值
3. 安装tomcat8.0
(1)解压缩apache-tomcat-8.0.20.tar.gz
命令：tar -zxvf apache-tomcat-8.0.20.tar.gz
(2)修改apache-tomcat-8.0.20文件夹名称为tomcatAHJC
(3)启动tomcat
进入 tomcatAHJC/bin/目录下运行startup.sh
命令：cd tomcatAHJC/bin
./startup.sh
注：如遇到root用户执行./startup.sh命令时提示权限不足
执行命令即可：在tomcat bin目录下执行chmod u+x *.sh
打开浏览器输入地址:localhost:8080
若出现以上页面即代表启动成功
(4) 关闭tomcat
命令：./shutdown.sh
(5) 配置防火墙，开放8080端口号，让外网能够访问
命令：
firewall-cmd --zone=public--add-port=8080/tcp –permanent
firewall-cmd--reload
移除端口：
firewall-cmd --zone=public --remove-port=8080/tcp --permanent
三.安装配置apache
1. 安装apache(版本为apache2.4.6)
命令：yum install httpd
默认安装即可
默认目录为：etc/httpd
常用命令：
systemctl starthttpd.service #启动apache
systemctl stophttpd.service #停止apache
systemctl restarthttpd.service #重启apache
systemctl enablehttpd.service #设置apache开机启动
卸载apache：
systemctl stophttpd.service
yum erasehttpd.x86_64
2. 修改apache配置
向conf/httpd.conf配置追加
#includeconf/balancer.conf
#提供基础的代理功能
LoadModuleproxy_module modules/mod_proxy.so
#提供负载均衡的功能
LoadModuleproxy_balancer_module modules/mod_proxy_balancer.so
#代理http协议
LoadModuleproxy_http_module modules/mod_proxy_http.so
#负载均衡的算法模块
LoadModulelbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
LoadModuleslotmem_shm_module modules/mod_slotmem_shm.so
#兼容低版本访问
LoadModuleaccess_compat_module modules/mod_access_compat.so
ProxyRequests Off
ProxyPass /balancer://mycluster/
#设置代理的算法
#ProxySetlbmethod=bytraffic
#代理关联配置loadfactor可以分发请求权重，loadfactor越大，权重越大
<Proxybalancer://mycluster>
BalancerMember ajp://127.0.0.1:8009/loadfactor=1
</Proxy>
#负载均衡控制
<Location/balancer-manager>
SetHandler balancer-manager
Order Deny,Allow
Allow from all
#Allow from localhost
</Location>
Tomcat负载均衡使用ajp端口
注：
关闭8080端口，开启80端口，防火墙更改生效
firewall-cmd --zone=public --remove-port=8080/tcp --permanent
firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --reload
四.安装mysql
1. 查看系统里面有没有mysql 的repo
命令：yum repolist all |grep mysql
2. 如果没有发现，则需要配置repo
打开文件夹：/etc/yum.repos.d/
新建文件：mysql-community.repo
添加内容并保存：
# Enable to useMySQL 5.6
[mysql56-community]
name=MySQL 5.6Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/6/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
3. 再次查看系统里面有没有mysql 的repo
如果存在则执行安装：yum installmysql-community-server
注：
安装过程中可能会出现错误：warning:rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
解决方法：打开文件夹：/etc/pki/rpm-gpg/ 新建文件：RPM-GPG-KEY-mysql
添加内容：
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Version: GnuPG v1.4.9 (SunOS)
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=443I
-----END PGP PUBLIC KEY BLOCK-----
然后继续安装：yum install mysql-community-server 即可
启动mysql：service mysqldstart
关闭mysql：service mysqldstop
登录mysql：mysql –p –uroot(注：默认安装无密码)
修改mysql密码为：123456
登录mysql后执行：
use mysql;
update user set password =Password('123456') where User = 'root';
flush privileges;
4. 安装workbench
(1).配置EPEL
执行命令：yum install epel-release.noarch
执行yum repolist，如果显示的信息里面有epel，则安装成功。
再执行：yum install tinyxml
(2).将mysql-workbench-community-6.3.9-1.el7.x86_64.rpm拷贝至
usr/mysql目录下，在该目录下执行：
yum install mysql-workbench-community-6.3.9-1.el7.x86_64.rpm
完成安装后在 应用程序->编程下 如果出现 mysql workbench表示安装成功
五.安装redis3.0.4
（1） 下载安装包：
在usr目录下执行命令：
wget http://download.redis.io/releases/redis-3.0.4.tar.gz
（2） 安装gcc编译器
yum -y install gcc automake autoconf libtool make
（3） 编译redis
命令：make
若报错：”jemalloc/jemalloc.h：没有那个文件或目录”
则执行：make MALLOC=libc
（4） 进行安装：
命令：make install
make install安装完成后，会在/usr/local/bin目录下生成下面几个可执行文件，它们的作用分别是：
redis-server：Redis服务器端启动程序
redis-cli：Redis客户端操作工具。也可以用telnet根据其纯文本协议来操作
redis-benchmark：Redis性能测试工具
redis-check-aof：数据修复工具
redis-check-dump：检查导出工具
（5） 修改配置：
编辑redis-3.0.4/redis.conf
将daemonize no改为daemonizeyes，使Redis进程在后台运行
查找到#masterauth <master-password>该行
修改为 masterauth 123456（顶格修改，前面不能留空格）
（6） 启动redis：
命令：./redis-server/usr/ redis-3.0.4/redis.conf
（7） 测试redis是否启动成功
进入usr/local/bin目录执行命令： ./redis-cli
若出”127.0.0.1:6379>” 内容及表示启动成功。