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