一、CentOS7下MySQL-5.7使用yum方式安装：
Centos7的MySQL安装
卸载mariaDb
mysql被oracle收购后为了防止mysql有可能变成闭源,因此mysql创始人maria就开源做了一个mariaDb, centos7是自带使用了这个数据库的.因此安装mysql之前,应当首先卸载mariadb数据库:
$ sudo yum list installed | grep mariadb #检查mariadb是否已安装
$ sudo yum list installed | grep mariadb
mariadb-libs.x86_64 1:5.5.56-2.el7 @anaconda
$ sudo yum -y remove mariadb* #全部卸载同理如果是已经安装过其他版本的MySQL，安装新的版本之前也需要按照如上方法进行卸载。
安装MySQL
下载mysql的YUM源： https://dev.mysql.com/downloads/repo/yum/
YUM源的官方安装说明：https://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/
下载源mysql的YUM源，官网提供的是最新的MySQL8.0的源，内含其他较低版本的源
wget -P /home/hadoop/softwares https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm --no-check-certificate由于我们是下载到/home/hadoop/softwares目录下，所以先切换到该目录下：
cd /home/hadoop/softwares安装mysql的YUM源：
sudo rpm -ivh mysql80-community-release-el7-3.noarch.rpm检查mysql的YUM源是否安装成功：
sudo yum repolist enabled | grep mysql
mysql-connectors-community/x86_64 MySQL Connectors Community 175
mysql-tools-community/x86_64 MySQL Tools Community 120
mysql80-community/x86_64 MySQL 8.0 Community Server 211选择要启用的mysql版本
查看源里包含的mysql版本,执行：
sudo yum repolist all | grep mysql
mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community 禁用
mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - So 禁用
mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community 禁用
mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - So 禁用
mysql-cluster-8.0-community/x86_64 MySQL Cluster 8.0 Community 禁用
mysql-cluster-8.0-community-source MySQL Cluster 8.0 Community - So 禁用
mysql-connectors-community/x86_64 MySQL Connectors Community 启用: 175
mysql-connectors-community-source MySQL Connectors Community - Sou 禁用
mysql-tools-community/x86_64 MySQL Tools Community 启用: 120
mysql-tools-community-source MySQL Tools Community - Source 禁用
mysql-tools-preview/x86_64 MySQL Tools Preview 禁用
mysql-tools-preview-source MySQL Tools Preview - Source 禁用
mysql55-community/x86_64 MySQL 5.5 Community Server 禁用
mysql55-community-source MySQL 5.5 Community Server - Sou 禁用
mysql56-community/x86_64 MySQL 5.6 Community Server 禁用
mysql56-community-source MySQL 5.6 Community Server - Sou 禁用
mysql57-community/x86_64 MySQL 5.7 Community Server 禁用
mysql57-community-source MySQL 5.7 Community Server - Sou 禁用
mysql80-community/x86_64 MySQL 8.0 Community Server 启用: 211
mysql80-community-source MySQL 8.0 Community Server - Sou 禁用可以通过类似下面的语句来启动和禁用某些版本，比如这里是禁用默认启用的MySQL8.0的源，转而启用我们需要安装的MySQL5.7的源。
或者通过修改
/etc/yum.repos.d/mysql-community.repo文件，改变默认安装的mysql版本。比如要安装5.7版本，将8.0源的enabled=1改成enabled=0，然后再将5.7源的enabled=0改成enabled=1即可。
sudo yum-config-manager --enable mysql57-community
sudo yum-config-manager --disable mysql80-community要使用yum-config-manager命令, 需要先安装yum-utils: sudo yum install yum-utils
注意： 同一时间只允许enable一个MySQL版本。
如果只需要安装MySQL5.7的版本，也可以不看上面，直接本地安装指定的远程MySQL5.7源
yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm
查看当前的启用的 MySQL 版本：
yum repolist enabled | grep mysql
mysql-connectors-community/x86_64 MySQL Connectors Community 175
mysql-tools-community/x86_64 MySQL Tools Community 120
mysql57-community/x86_64 MySQL 5.7 Community Server 464安装MySQL
sudo yum install -y mysql-community-server
已加载插件：fastestmirror
mysql-connectors-community | 2.6 kB 00:00:00
mysql-tools-community | 2.6 kB 00:00:00
mysql57-community | 2.6 kB 00:00:00
mysql57-community/x86_64/prima FAILED
http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/repodata/cae8c564a11e5fca11dbe958c273358f206f1bba-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to repo.mysql.com:80; Connection refused"
正在尝试其它镜像。
mysql57-community/x86_64/primary_db | 247 kB 00:00:00
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
正在解决依赖关系
--> 正在检查事务
---> 软件包 mysql-community-server.x86_64.0.5.7.32-1.el7 将被 安装
--> 正在处理依赖关系 mysql-community-common(x86-64) = 5.7.32-1.el7，它被软件包 mysql-community-server-5.7.32-1.el7.x86_64 需要
--> 正在处理依赖关系 mysql-community-client(x86-64) >= 5.7.9，它被软件包 mysql-community-server-5.7.32-1.el7.x86_64 需要
--> 正在检查事务
---> 软件包 mysql-community-client.x86_64.0.5.7.32-1.el7 将被 安装
--> 正在处理依赖关系 mysql-community-libs(x86-64) >= 5.7.9，它被软件包 mysql-community-client-5.7.32-1.el7.x86_64 需要
---> 软件包 mysql-community-common.x86_64.0.5.7.32-1.el7 将被 安装
--> 正在检查事务
---> 软件包 mysql-community-libs.x86_64.0.5.7.32-1.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
==============================================================================================
Package 架构 版本 源 大小
==============================================================================================
正在安装:
mysql-community-server x86_64 5.7.32-1.el7 mysql57-community 173 M
为依赖而安装:
mysql-community-client x86_64 5.7.32-1.el7 mysql57-community 25 M
mysql-community-common x86_64 5.7.32-1.el7 mysql57-community 308 k
mysql-community-libs x86_64 5.7.32-1.el7 mysql57-community 2.3 M
事务概要
==============================================================================================
安装 1 软件包 (+3 依赖软件包)
总下载量：201 M
安装大小：875 M
....
已安装:
mysql-community-server.x86_64 0:5.7.32-1.el7
作为依赖被安装:
mysql-community-client.x86_64 0:5.7.32-1.el7
mysql-community-common.x86_64 0:5.7.32-1.el7
mysql-community-libs.x86_64 0:5.7.32-1.el7 启动MySQL服务
systemctl start mysqld.service # 或 service mysqld start配置开机启动
systemctl enable mysqld.service查看运行状态
systemctl status mysqld.service
mysql 2574 1 1 23:49 ? 00:00:00 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
查看到进程信息
netstat -anpl | grep mysql
查看端口，可以看出mysql server的进程mysqld所使用的默认端口即3306
$ sudo netstat -anpl | grep tcp
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1412/sshd
tcp 0 52 192.168.186.103:22 192.168.186.1:54058 ESTABLISHED 2287/sshd: hadoop
tcp6 0 0 :::3306 :::* LISTEN 2574/mysqld
tcp6 0 0 192.168.186.103:3888 :::* LISTEN 2060/java
tcp6 0 0 :::22 :::* LISTEN 1412/sshd
tcp6 0 0 :::37791 :::* LISTEN 2060/java
tcp6 0 0 :::2181 :::* LISTEN 2060/java 找到临时密码
但是要登陆mysql，我们需要root密码，这个密码是安装时随机生成在MySQL的服务器日志中的
grep "temporary password" /var/log/mysqld.log
2020-02-26T17:05:45.104999Z 1 [Note] A temporary password is generated for root@localhost: bl/!6qaU.wuX
登录MySQL
# 回车后输入在日志中找到的临时root登录密码登录
mysql -u roop -p 问题: 日志里没有找到临时密码, 或者密码不能登录，可能的原因就是之前安装过MySQL
解决办法:
sudo rm -rf /var/lib/mysql再重启服务后就可以在日志文件中找到重新生成的临时密码了
systemctl restart mysqld.service $ cat /var/log/mysqld.log | grep "temporary password" 2020-02-26T17:05:45.104999Z 1 [Note] A temporary password is generated for root@localhost: bl/!6qaU.wuX 2020-08-01T16:07:26.941916Z 1 [Note] A temporary password is generated for root@localhost: x/ttqh=)_6Z/也可以直接使用明文密码登陆,像这样
mysql -uroop -p"x/ttqh=)_6Z/"初始密码我们可以这样操作，因为很快我们会将将其改为其他的密码。
但是正常使用时不建议这样 不安全
黑客可以使用history命令查看到你在命令行的输入获取到你的MySQL的root密码
另外MySQL报错在/var下面的log目录下可以查看
如果是虚拟机环境为了方便可以选择配置跳过密码验证
vim /etc/my.cnf添加以下代码
default-authentication-plugin=mysql_native_password #配置文件本来就有去掉注释即可 symbolic-links=0 skip-grant-tables #跳过密码验证
第一次登陆后系统会很快提示你修改掉默认密码
mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.尝试修改密码(虚拟机可以设置简单密码，如果是购买的服务器则需设置复杂密码并修改默认端口号)
mysql> alter user 'root'@'localhost' identified by 'niit1234';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements密码安全策略
但是基于密码策略，所设置的密码必须要包含大小写字母、数字和字符。
修改策略并设置简单密码
将策略要求置为0(LOW)，长度要求置为1
mysql> set global validate_password_policy=0;
mysql> set global validate_password_length=1;关于密码安全策略：
通过show命令查看当前的策略
mysql> show variables like 'validate_password%'; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password_check_user_name | OFF | | validate_password_dictionary_file | | | validate_password_length | 8 | | validate_password_mixed_case_count | 1 | | validate_password_number_count | 1 | | validate_password_policy | MEDIUM | | validate_password_special_char_count | 1 | +--------------------------------------+--------+ 7 rows in set (0.00 sec)1） validate_password_policy：密码安全策略，默认MEDIUM策略
策略 检查规则 0 or LOW Length 1 or MEDIUM Length; numeric, lowercase/uppercase, and special characters 2 or STRONG Length; numeric, lowercase/uppercase, and special characters; dictionary file 2）validate_password_dictionary_file：密码策略文件，策略为STRONG才需要
3）validate_password_length：密码最少长度
4）validate_password_mixed_case_count：大小写字符长度，至少1个
5）validate_password_number_count ：数字至少1个
6）validate_password_special_char_count：特殊字符至少1个
这样以后就可以使用新密码登陆了
开启远程登陆
mysql命令的-h选项可以设置需要远程登陆mysql的服务器的ip地址
如果是本地的话可以使用127.0.0.1或者直接省略
但是远程访问因为安全原因默认是关闭的
mysql> select Host,User from user;
+-----------+---------------+
| Host | User |
+-----------+---------------+
| localhost | mysql.session |
| localhost | mysql.sys |
| localhost | root |
+-----------+---------------+
3 rows in set (0.00 sec)
这里可以看到host都是localhost,这就是因为这些账号只有本地访问的权限
我们需要将root的访问权限扩大都允许任意方式访问(包括远程访问)
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY 'niit1234' WITH GRANT OPTION;也可以创建一个专门用来支持远程访问的单独用户
GRANT ALL PRIVILEGES ON *.* TO 'remote'@'%' IDENTIFIED BY 'niit1234' WITH GRANT OPTION; 如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作为密码
若你想限制能连接到mysql服务器的客户端所在的IP地址为'192.168.1.6'
并使用mypassword作为密码，则命令如下：
GRANT ALL PRIVILEGES ON . TO 'mysqluser'@'192.168.1.6'IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
使修改生效
现在虽然修改了远程访问权限，但是还没有生效
我们需要刷新权限（或者重启服务），当然直接在mysql执行环境刷新权限是更好的方法
mysql>FLUSH PRIVILEGES;然后我们可以试试使用navicat远程连接虚拟机中mysql试试
navicat虽然是收费的还是可以下载到破解的版本
最后一点
如果你的服务器开启了防火墙也可能导致远程无法连接
因为mysql默认使用3306端口，我们需要开放这个端口给mysql客户端连接
修改编码
默认安装的设置对中文的支持不好，一般需要修改成utf8，但这里我们修改成utf8mb4编码，因为它是uft8的超集，减少更多乱码的问题，也是推荐使用的编码，比如需要插入emoji字符在数据库中，utf8的显示就会出现问题，而utf8mb4则没有问题。
首先查看当前的编码：
mysql> show variables like '%char%';
+--------------------------------------+----------------------------+
| Variable_name | Value |
+--------------------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
9 rows in set (0.00 sec)
为了修改编码，我们需要修改mysql的核心配置文件如下：
[hadoop@hadoop000 download]$ sudo vim /etc/my.cnf
# For advice on how to change settings please see
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
# 默认服务器内部操作字符集
character-set-server=utf8mb4
# 默认服务器内部操作字符集校对规则
collation-server=utf8mb4_general_ci
# 默认的存储引擎
default-storage-engine=InnoDB
# 初始化连接时设置以下字符集：
# character_set_client
# character_set_results
# character_set_connection
init_connect='set names utf8mb4'
[client]
default-character-set=utf8mb4
[mysql]
default-character-set=utf8mb4- 30行以下为手动添加的配置
验证
mysql> show variables like '%char%';
+--------------------------------------+----------------------------+
| Variable_name | Value |
+--------------------------------------+----------------------------+
| character_set_client | utf8mb4 |
| character_set_connection | utf8mb4 |
| character_set_database | utf8mb4 |
| character_set_filesystem | binary |
| character_set_results | utf8mb4 |
| character_set_server | utf8mb4 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
9 rows in set (0.00 sec)- character_set_client 是指客户端发送过来的语句的编码
- character_set_database 是指服务器内部使用的编码
- character_set_connection 是指mysqld收到客户端的语句后，要转换到的编码
- character_set_results 是指server执行语句后，返回给客户端的数据的编码
- character_set_system是元数据编码，无需修改
- character_set_filesystem是文件系统的编码，2进制存储最有效，不能修改
rpm-bundle的离线安装
下载rpm-bundle包
$ wget http://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.33-1.el7.x86_64.rpm-bundle.tar
$ tar xvf mysql-5.7.33-1.el7.x86_64.rpm-bundle.tar
$ mkdir mysql-jars
$ mv mysql-comm*.rpm mysql-jars/
$ cd mysql-jars/
$ ls
mysql-community-client-5.7.33-1.el7.x86_64.rpm
mysql-community-common-5.7.33-1.el7.x86_64.rpm
mysql-community-libs-5.7.33-1.el7.x86_64.rpm
mysql-community-libs-compat-5.7.33-1.el7.x86_64.rpm
mysql-community-server-5.7.33-1.el7.x86_64.rpm
依次手动安装
sudo rpm -ivh mysql-community-common-5.7.33-1.el7.x86_64.rpm
sudo rpm -ivh mysql-community-libs-5.7.33-1.el7.x86_64.rpm
sudo rpm -ivh mysql-community-libs-compat-5.7.33-1.el7.x86_64.rpm
sudo rpm -ivh mysql-community-client-5.7.33-1.el7.x86_64.rpm
sudo rpm -ivh mysql-community-server-5.7.33-1.el7.x86_64.rpmCentOS7下MySQL-5.7使用yum方式卸载
1、停止MySQL
命令：systemctl stop mysqld
2、查看已安装的mysql
命令：rpm -qa | grep -i mysql
3、卸载mysql，依次卸载第2步骤所列出的有关MySQL的安装包,如
命令：yum remove -y mysql-community-server-5.6.36-2.el7.x86_64
4、删除mysql相关目录
1）使用命令查看mysql相关的文件目录：find / -name mysql
2）依次删除所查到的目录，命令：rm -rf /xxx/xxx/mysql
二、CentOS7下Nginx的安装：
Nginx安装
安装前确认是否已经安装过
sudo yum search nginxNginx文档： http://nginx.org/en/docs/
Installation on Linux, nginx packages from nginx.org can be used.
Installation instructions
RHEL/CentOS
Debian
Ubuntu
SLES
Alpine
以 CentOS为例进行安装
Install the prerequisites:
sudo yum install yum-utils
To set up the yum repository, create the file named /etc/yum.repos.d/nginx.repo with the following contents:
sudo vi /etc/yum.repos.d/nginx.repo内容如下：
[nginx-stable] name=nginx stable repo baseurl=http://nginx.org/packages/centos/$releasever/$basearch/ gpgcheck=1 enabled=1 gpgkey=https://nginx.org/keys/nginx_signing.key module_hotfixes=true [nginx-mainline] name=nginx mainline repo baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/ gpgcheck=1 enabled=0 gpgkey=https://nginx.org/keys/nginx_signing.key module_hotfixes=true
By default, the repository for stable nginx packages is used. If you would like to use mainline nginx packages, run the following command:
sudo yum-config-manager --enable nginx-mainline
To install nginx, run the following command:
sudo yum install -y nginx
When prompted to accept the GPG key, verify that the fingerprint matches 573B FD6B 3D8F BC64 1079 A6AB ABF5 BD82 7BD9 BF62, and if so, accept it.
常用命令
| 解释 | 命令 |
|---|---|
| 安装服务 | yum install nginx |
| 启动服务 | service nginx start |
| 停止服务 | service nginx stop |
| 重载服务 | service nginx reload |
配置完成后启动服务
sudo service nginx start如果服务器已经启动，当配置发生变化可以直接使用重载服务来更新配置，运维常用，因为不需要停止服务就可以重载新的配置。
三、部署前端网站到nginx下
电商网站的静态文件都放在shop文件夹中,将此文件夹上传到虚拟机的/opt/data/目录下,
对nginx默认配置文件进行改名
$ cd /etc/nginx/conf.d/
$ mv default.conf shop.conf修改如下
server {
listen 80;
server_name hadoop100;
root /opt/data/;
location /shop/ {
index index.html;
access_log /var/log/nginx/access.log main;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
重新加载nginx配置，执行：
$ sudo nginx -s reload在浏览器中验证下是否可以访问到网站，输入：
http://hadoop100/shop/效果如下：
四、Tomcat的安装
准备：安装Java JDK1.8
这里安装openjdk是因为比较简单, 工作场合一定要使用oracle提供的jdk1.8
sudo yum -y install java-1.8.0-openjdk*这样安装的好处就是环境变量都配好了
可以直接查看版本 java -version
Tomcat安装
下载页面： https://tomcat.apache.org/download-90.cgi
文档：https://tomcat.apache.org/tomcat-9.0-doc/index.html
wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.41/bin/apache-tomcat-9.0.41.tar.gz解压到后改名tomcat9
tar -zxvf apache-tomcat-9.0.41.tar.gz
mv apache-tomcat-9.0.41 /opt/pkg/tomcat9由于tomcat的端口8080和大数据环境中的jetty端口冲突,这里修改tomcat的端口位18080
[hadoop@hadoop100 ~]$ cat /opt/pkg/tomcat9/conf/server.xml
...
<Connector port="18080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />启动 进入 /bin目录下 运行startup.sh脚本文件
bin]$ ./startup.sh
...
Tomcat started.检查tomcat进程信息
$ bin]$ ps -ef | grep tomcat
hadoop 15142 1 1 14:41 pts/0 00:00:05 /home/hadoop/app/jdk1.8.0_211/bin/java -Djava.util.logging.config.file=/home/hadoop/app/tomcat9/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Dignore.endorsed.dirs= -classpath /home/hadoop/app/tomcat9/bin/bootstrap.jar:/home/hadoop/app/tomcat9/bin/tomcat-juli.jar -Dcatalina.base=/home/hadoop/app/tomcat9 -Dcatalina.home=/home/hadoop/app/tomcat9 -Djava.io.tmpdir=/home/hadoop/app/tomcat9/temp org.apache.catalina.startup.Bootstrap start
hadoop 15296 15064 0 14:47 pts/0 00:00:00 grep --color=auto tomcat检查对应的监听端口信息
netstat -anpt | grep 15142修改conf/tomcat-users.xml添加tomcat用户
添加如下内容
<!--
<role rolename="tomcat"/>
<role rolename="role1"/>
<user username="tomcat" password="tomcat" roles="tomcat"/>
<user username="both" password="tomcat" roles="tomcat,role1"/>
<user username="role1" password="tomcat" roles="role1"/>
-->
<role rolename="manager-gui"/>
<role rolename="manager-script" />
<user username="admin" password="123123" roles="manager-gui,manager-script" />
</tomcat-users>为了能够正常访问tomcat管理界面, 修改webapps/manager/META-INF目录下的context.xml,在allow行的末尾加上\d+.\d+.\d+.\d+表示允许所有主机访问。
<Context antiResourceLocking="false" privileged="true" >
<Valve className="org.apache.catalina.valves.RemoteAddrValve"
allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1|\d+\.\d+\.\d+\.\d+" />
<Manager sessionAttributeValueClassNameFilter="java\.lang\.(?:Boolean|Integer|Long|Number|String)|org\.apache\.catalina\.filters\.CsrfPreventionFilter\$LruCache(?:\$1)?|java\.util\.(?:Linked)?HashMap"/>
</Context>重启tomcat9生效
bin/shutdown.sh
...
bin/startup.sh6）验证，在浏览器输入: <code>http://hadoop100:8080/或者在命令行里面输入：netstat -anop|grep 18080
五、电商后台系统部署到Tomcat服务器上
在MySQL创建数据库shop,将项目所需的sql数据导入,如:
mysql> source /opt/data/shop.sql将代码导入到eclipse或者idea中
将代码数据库连接相关配置hibernate.properties做如下修改：
- 修改数据库名及地址为服务器的数据库名及地址
- 修改数据库用户明、密码为服务器的用户密码
选择export->war
上传war包至Linux服务器
修改war包名位university.war
将war包移动到Tomcat安装目录下的webapp目录下
启动或重启Tomcat
打开浏览器进行验证：
配置nginx反向代理
18080端口的访问方式不太方便,另外也需要解决nginx下部署的静态页面调用后台服务的跨域问题,这里需要设置nginx方向代理,修改nginx配置文件如下:
server {
listen 80;
server_name hadoop100;
root /opt/data/;
location /shop/ {
index index.html;
access_log /var/log/nginx/access.log main;
}
location /university/ {
proxy_pass http://hadoop100:18080/university/;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}重新加载nginx配置
sudo nginx -s reload现在可以通过http://hadoop100/university/访问后台界面
如果访问失败可以查看错误日志
sudo vi /var/log/nginx/error.log 如果发现502错误：
2020/11/18 16:12:39 [crit] 16376#16376: *1 connect() to 127.0.0.1:8080 failed (13: Permission denied) while connecting to upstream, client: 192.168.186.1, server: hadoop000, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8080/favicon.ico", host: "hadoop000", referrer: "http://hadoop000/"此时需要考虑把linux操作系统默认的强制访问安全限制设置为禁用。
关闭SElinux即可
-
临时关闭 SElinux
sudo setenforce 0 -
永久关闭 SElinux
sudo vim /etc/selinux/config SELINUX=disabled
修改之后就可以正常访问了
通过http://hadoop100/shop访问前端界面,可以看见数据可以正常加载了.
至此商城项目的前后端就配置完了, 商城的nginx服务器日志保存在/var/log/nginx/access.log ,接下来我们将使用httpd提供的ab压测工具来快速生成大量访问日志.
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