linux安装mysql

1. linux 安装mysql

1.1 安装

注意：centos中安装前需要卸载原有的mariadb，

rpm -qa|grep -i mariadb //查找是否有mariadb 
yum remove mariadb-libs-5.5.52-1.el7.x86_64 //卸载

官网下载各种rpm包，依次进行rpm安装。先是common,libs,client,server

rpm -ivh mysql-community-common-5.7.16-1.el7.x86_64.rpm 
rpm -ivh mysql-community-libs-5.7.16-1.el7.x86_64.rpm 
rpm -ivh mysql-community-libs-compat-5.7.16-1.el7.x86_64.rpm 
rpm -ivh mysql-community-client-5.7.16-1.el7.x86_64.rpm 
rpm -ivh mysql-community-server-5.7.16-1.el7.x86_64.rpm 

1.2 启动服务

systemctl start mysqld //启动服务
systemctl status mysqld //查看状态

1.3 修改密码

查看初始的随机密码

grep pass /var/log/mysqld.log --color

修改密码

mysql -uroot -p
set global validate_password_policy=0; #密码强度降到最低级
set global validate_password_length=4; #密码长度
alter user 'root'@'localhost' identified by '111111';#设置新密码
>\q退出
重新登陆
> mysql -uroot -p111111
# 创建一个远程连接用户（%任意主机都可以连接进来）
# 以备hive 的安装配置hive-site.xml文件
create user 'root'@'%' identified by '123456' ;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
#刷新权限
Flush privileges;

2. linux 安装hive

2.1 解压

tar -zxvf apache-hive-3.1.2-bin.tar.gz -C /usr/bigdata/hive/

2.2 配置环境变量

vim /etc/profile //配置环境变量
export HIVE_HOME=/usr/hive/apache-hive-2.3.4-bin
export PATH=$PATH:$HIVE_HOME/bin
source /etc/profile //生效变量

2.3 配置hive-site.xml hive-env.sh文件

配置hive-env.sh

export HADOOP_HOME=/usr/hadoop/hadoop-2.7.7
export HIVE_CONF_DIR=/usr/hive/apache-hive-2.3.4-bin/conf
export HIVE_AUX_JARS_PATH=/usr/hive/apache-hive-2.3.4-bin/lib

配置hive-site.xml

<configuration>
        <property>
                <name>hive.metastore.warehouse.dir</name>
                <value>/user/hive_remote/warehouse</value>
        </property>
        <property>
                <name>javax.jdo.option.ConnectionDriverName</name>
                <value>com.mysql.jdbc.Driver</value>
        </property>
        <property>
                <name>javax.jdo.option.ConnectionURL</name>
                <value>jdbc:mysql://slave2:3306/hive?createDatabaseIfNotExist=true&useSSL=false
        </property>
        <property>
                <name>javax.jdo.option.ConnectionUserName</name>
                <value>root</value>
        </property>
        <property>
                <name>javax.jdo.option.ConnectionPassword</name>
                <value>123456</value>
        </property>
</configuration> 

2.4 将mysql-connect-java.jar拷贝到hive的lib下

mv mysql-connector-java-5.1.27-bin.jar /hive/apache-hive-3.1.2-bin/lib

2.5 启动hadoop集群

start-all.sh

2.6 启动hive

hive