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未设置远程访问,会报如下的错 [root@cenots7 ~]# mysql -h192.168.30.20 -uroot -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'192.168.30.90' (us 阅读全文
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建表语句 -- !/usr/bin/env bash -- this source code form is subject to the terms of the mozilla public -- license, v. 2.0. if a copy of the mpl was not dis 阅读全文
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简单记录一下安装过程 conf/zoo.cfg末尾添加如下内容 server.0=192.168.30.125:2888:3888 server.1=192.168.30.151:2888:3888 server.2=192.168.30.206:2888:3888 在zookeeper的data目 阅读全文
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SELECT TIME,STATE,INFO FROM `information_schema`.`PROCESSLIST` WHERE `info` IS NOT NULL and TIME > 0\G 阅读全文
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[root@node218 ~]# hadoop fs -du -h /inventory5g 8.0 G 8.0 G /inventory5g/inventory.dat 261.2 M 261.2 M /inventory5g/inventory_1_30.dat 261.6 M 261.6 M 阅读全文
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配置java环境变量 wget https://repo.huaweicloud.com/java/jdk/8u202-b08/jdk-8u202-linux-x64.tar.gzmkdir -p /usr/local/javacd /usr/local/javatar -zxvf jdk-8u20 阅读全文
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安装教程 # 获取MySQL8.0源 wget https://dev.mysql.com/get/mysql80-community-release-el7-2.noarch.rpm # 安装源 rpm -ivh mysql80-community-release-el7-2.noarch.rpm 阅读全文
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代码如下,简单记录一下 package org.example; import java.util.Properties; import org.apache.kafka.clients.producer.KafkaProducer; import org.apache.kafka.clients. 阅读全文
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#因为同一个文件夹,压缩成tar格式,压缩后的文档比较大zip -r tpcds1107.zip ./* 阅读全文