Open source summer | Cloud server ECS installs Mysql, JDK, RocketMQ

云服务器ECS

Since it comes to cloud serversECS上面安装web应用所需的基础组件,So first of all, you need an existing cloud serverECS,控制台地址： https://ecs.console.aliyun.com/#/home,打开控制台,I have purchased a cloud server hereECS了,直接启动就可以了

No cloud server purchasesECSFriends can refer to the blog post：https://developer.aliyun.com/article/883336It can be operated.

远程连接ECS

Want to operate cloud serverECS,A remote connection tool is required,Here is what I have been usingxshell5,习惯了,所以这里我就用xshell5to connect to my cloud server remotelyECS,具体操作可以参考博文：https://developer.aliyun.com/article/980312,This blog post will show you how to activate a cloud serverECS,如何创建ECS实例,如何远程连接ECS.

安装JDK

First you need to download what you want to installjdk版本的压缩包,可以去官网下载,You can also use my version directly,这里我把我的jdk上传到百度网盘 链接：https://pan.baidu.com/s/1QwReJZPdiIjcyddMix7qgA?pwd=rvxv ,下载完成后安装

View after uploading the file to the server

ls /usr/local/src/

解压到当前文件夹

cd /usr/local/src/
tar -zxvf jdk-8u251-linux-x64.tar.gz 

解压完成后移动jdk1.8.0_251到/usr/local/下

mv jdk1.8.0_251 /usr/local/

编辑 /etc/profile文件

vim /etc/profile

在/etc/profileAdd the following lines of code at the end

JAVA_HOME=/usr/local/jdk1.8.0_251
CLASS_PATH=.:$JAVA_HOME/lib
PATH=$JAVA_HOME/bin:$PATH
export JAVA_HOME CLASS_PATH PATH

完成之后escexit editing and:wq保存,执行命令使环境变量生效

source /etc/profile

查验jdk是否安装成功

java -version
##############
java version "1.8.0_251"
Java(TM) SE Runtime Environment (build 1.8.0_251-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.251-b08, mixed mode)

安装RocketMQ

首先需要下载RocketMQ安装包,官网下载地址：https://rocketmq.apache.org/docs/quick-start/,You can also use the version I downloaded directly,百度网盘地址：链接：https://pan.baidu.com/s/1aiJDDLuBWOtC4qiQtouXwA?pwd=jk7x ,After the download is complete, upload it to the server/usr/local/src路径下

RocketMQ安装操作

First unzip the installation package to the current folder

unzip rocketmq-all-4.5.0-bin-release.zip

Move after decompression is completerocketmq-all-4.5.0-bin-release到/usr/local下

mv rocketmq-all-4.5.0-bin-release /usr/local/

进入到rocketmq-all-4.5.0-bin-release下

cd /usr/local/rocketmq-all-4.5.0-bin-release/

创建/data/logs/rocketmqlogs目录,并且修改broker、namesrv、tools的日志输出到/data/logs/rocketmqlogs,命令如下

mkdir -p /data/logs/rocketmqlogs
sed -i 's#${user.home}/logs/#/data/logs/#g' conf/logback_broker.xml
sed -i 's#${user.home}/logs/#/data/logs/#g' conf/logback_namesrv.xml
sed -i 's#${user.home}/logs/#/data/logs/#g' conf/logback_tools.xml

This is set by defaultJVM内存比较大,For personal testing, it can be changed to a smaller size,下面修改borker 的JVM内存

vim bin/runbroker.sh

找到配置【JAVA_OPT="${JAVA_OPT} -server -Xms8g -Xmx8g -Xmn4g"】修改为

JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m"

修改namesrv的JVM内存

vim bin/runserver.sh

找到配置【JAVA_OPT="${JAVA_OPT} -server -Xms4g -Xmx4g -Xmn2g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"】修改为

JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"

修改tools的JVM内存

vim bin/tools.sh

找到配置【JAVA_OPT="${JAVA_OPT} -server -Xms1g -Xmx1g -Xmn256m -XX:PermSize=128m -XX:MaxPermSize=128m"】修改为

JAVA_OPT="${JAVA_OPT} -server -Xms128m -Xmx128m -Xmn256m -XX:PermSize=128m -XX:MaxPermSize=128m"

JVMAfter the memory modification is completed, it needs to be modifiedconf文件

vim /usr/local/rocketmq-all-4.5.0-bin-release/conf/broker.conf

Find the following configuration or add the following configuration

namesrvAddr=127.0.0.1:9876
brokerIP1=127.0.0.1

最后配置环境变量,在/etc/profile中增加rocketmqRelevant system environment variables,After adding the environment variables

JAVA_HOME=/usr/local/jdk1.8.0_251
ROCKETMQ_HOME=/usr/local/rocketmq-all-4.5.0-bin-release
CLASS_PATH=.:$JAVA_HOME/lib
PATH=$JAVA_HOME/bin:$ROCKETMQ_HOME/bin:$PATH
export JAVA_HOME ROCKETMQ_HOME CLASS_PATH PATH

最后执行命令使环境变量生效

source /etc/profile

RocketMQ测试

启动RocketMQ,首先启动namesrv服务

nohup mqnamesrv>>/data/logs/mqnamesrv.log 2>&1 &

启动broker服务

nohup mqbroker -n 127.0.0.1:9876 -c /usr/local/rocketmq-all-4.5.0-bin-release/conf/broker.conf autoCreateTopicEnable=true>> /data/logs/mqbroker.log 2>&1 &

After the startup is complete, you can check whether the startup is successful

ps -ef|grep mqnamesrv

ps -ef|grep mqbroker

Enter the test after the service check is startedRocketMQ,在命令行指定namesrv ip地址和端口

export NAMESRV_ADDR=127.0.0.1:9876

然后使用tools.sh脚本启动Producer类

tools.sh org.apache.rocketmq.example.quickstart.Producer

可以看到如下日志

Use it after sending the messagetools.sh脚本启动Consumerclass to consume messages

tools.sh org.apache.rocketmq.example.quickstart.Consumer

执行日志

到此说明RocketMQMessages can be sent and consumed normally,搭建成功

安装Mysql

首先需要下载mysql,Here we can use Alibaba Cloud server directlyECS提供的镜像文件

wget http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

然后执行安装

yum -y install mysql57-community-release-el7-10.noarch.rpm
yum -y install mysql-community-server --nogpgcheck

安装完成之后查看是否安装成功

mysql -V

安装成功,

启动Mysql

systemctl start mysqld.service

查看Mysql初始密码

grep "password" /var/log/mysqld.log

执行结果如图

登录数据库

mysql -uroot -p

修改数据库密码

#修改密码安全策略为低（只校验密码长度,至少8位）.
set global validate_password_policy=0;
ALTER USER 'root'@'localhost' IDENTIFIED BY '12345678';

授予root用户远程管理权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '12345678';

This completes the installation of the database,So far, the Alibaba Cloud server is completedECS安装Mysql、RocketMQ、JDK的操作,大功告成.