JDK+Tomcat+Zookeeper+DubboAdmin安装教程

1. 安装内容：

JDK 1.8.131

Tomcat 7.0.77

Zookeeper 3.4.9

Dubbo admin 2.5.4-SNAPSHOT

2. 安装步骤：

2.1 JDK的安装

1. jdk安装

rpm包:

rpm -ivh /home/test/download/jdk-8u131-linux-x64.rpm

生成链接以便版本升级

ln -s jdk1.8.0_131 latest

ln -s latest default

2. 配置环境变量

vi /etc/profile

export JAVA_HOME=/usr/java/default

export JAVA_BIN=$JAVA_HOME/bin

export PATH=$PATH:$JAVA_HOME/bin

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

3. 使配置生效

source /etc/profile

4. 测试jdk.

java -version

java version "1.8.0_131"

Java(TM) SE Runtime Environment (build 1.8.0_131-b11)

Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

2.2 Tomcat的安装

1. 解压缩

cd /home/test/

tar -zxvf /home/test/download/apache-tomcat-7.0.77.tar.gz

2. 启动Tomcat

cd /home/test/download/apache-tomcat-7.0.77/bin

./startup.sh

Using CATALINA_BASE:   /home/test/apache-tomcat-7.0.77

Using CATALINA_HOME:   /home/test/apache-tomcat-7.0.77

Using CATALINA_TMPDIR: /home/test/apache-tomcat-7.0.77/temp

Using JRE_HOME:        /usr/java/default

Using CLASSPATH:       /home/test/apache-tomcat-7.0.77/bin/bootstrap.jar:/home/test/apache-tomcat-7.0.77/bin/tomcat-juli.jar

Tomcat started.

3. 测试Tomcat:

在浏览器输入: http://ip:8080

出现tomcat的页面表示安装成功.

4. 停止Tomcat

./shutdown.sh

2.3 Zookeeper安装

解压

cd /home/test

tar -zxvf /home/test/download/zookeeper-3.4.9.tar.gz

配置zoo.cfg

vim /zookeeper-3.4.9/conf/zoo.cfg

# The number of milliseconds of each tick

tickTime=2000

# The number of ticks that the initial

# synchronization phase can take

initLimit=10

# The number of ticks that can pass between

# sending a request and getting an acknowledgement

syncLimit=5

# the directory where the snapshot is stored.

# do not use /tmp for storage, /tmp here is just

# example sakes.

dataDir=/home/test/zookeeper-3.4.9/data

dataLogDir=/home/test/zookeeper-3.4.9/log

# the port at which the clients will connect

clientPort=2181

# the maximum number of client connections.

# increase this if you need to handle more clients

#maxClientCnxns=60

#

# Be sure to read the maintenance section of the

# administrator guide before turning on autopurge.

#

# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance

#

# The number of snapshots to retain in dataDir

#autopurge.snapRetainCount=3

# Purge task interval in hours

# Set to "0" to disable auto purge feature

#autopurge.purgeInterval=1

运行

./zookeeper-3.4.9/bin/zkServer.sh start

2.4 Dubboadmin的安装

修改端口为8090

vi server.xml

<Connector port="8080" protocol="HTTP/1.1"

改为

8090

删除tomcat ROOT文件夹并新建空目录ROOT

cd /home/test/apache-tomcat-7.0.77/webapps

rm -rf ROOT

mkdir ROOT

解压dubboadmin war包到ROOT目录中

cd ROOT

jar -xvf /home/test/download/dubbo-admin-2.5.4-SNAPSHOT.war

修改dubbo配置

在ROOT/WEB-INF中修改dubbo.properties

重启tomcat

 ./bin/shutdown.sh

 ./bin/startup.sh

测试

在浏览器访问

一些出现的问题：

如果第一次启动tomcat有问题

请在JVM环境中解决

打开$JAVA_PATH/jre/lib/security/java.security这个文件，找到下面的内容：

注意有时候默认是random，而不是urandom，记得加个u

securerandom.source=file:/dev/random

替换成

securerandom.source=file:/dev/./urandom

注意：在linux中部署web应用jar包时，如果启动特别慢，也可以按照上面方法进行修改

2.5 centos安装mysql

CentOS 7之后的版本yum的默认源中使用MariaDB替代原先MySQL，因此安装方式较为以往有一些改变：

下载mysql的源

wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

安装yum库

yum localinstall -y mysql57-community-release-el7-7.noarch.rpm

安装MySQL

yum install -y mysql-community-server

启动MySQL服务

systemctl start mysqld.service

MySQL5.7加强了root用户的安全性，因此在第一次安装后会初始化一个随机密码，以下为查看初始随机密码的方式

grep 'temporary password' /var/log/mysqld.log

结果如下：

使用初始随机密码登录后MySQL会强制要求修改密码，否则无法正常使用，（密码必须包含小写、大写字母及特殊字符，当然也有其他方法不受此限制，再次不多做描述），修改方法如下：

SET PASSWORD = PASSWORD('your new password');

ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;

flush privileges;

然后退出后即可用新密码登录。

远程连接授权：

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'your password' WITH GRANT OPTION;

开通端口（默认3306）：

firewall-cmd --add-port=3306/tcp