linux开发环境配置

1.jdk1.8

1.解压

tar -zxvf jdk-8u381-linux-x64.tar.gz -C /usr/local/java

2.环境配置

## 安装vim
yum -y install vim

## 配置文件
vim /etc/profile

export JAVA_HOME=/usr/local/java/jdk1.8.0_381
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

## 重载配置文件
source /etc/profile

2.mysql8

1.删除mariadb 安装libaio和numactl

rpm -qa|grep mariadb
rpm -e --nodeps mariadb-libs
yum -y install libaio
yum -y install numactl

2.解压

## 拆分tar包
tar -xvf mysql-8.0.30-el7-x86_64.tar
## 解压安装包
tar -zxvf mysql-8.0.30-el7-x86_64.tar.gz

## mv重命名
mv mysql-8.0.30-el7-x86_64/ /usr/local/mysql

3.创建用户组 用户

## 创建用户组
groupadd mysql
## 创建用户 -r：创建系统用户-g：指定用户组
useradd -r -g mysql mysql
## 更改属主和数组
chown -R mysql:mysql /usr/local/mysql/
## 更改权限
chmod -R 755 /usr/local/mysql/

4.初始化mysql

## 初始化mysql
cd /usr/local/mysql/bin/
./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql

5.环境配置

vim /etc/my.cnf

[client]
port = 3306
socket = /usr/local/mysql/data/mysql.sock
default-character-set = utf8mb4

[mysql]  
default-character-set = utf8mb4

[mysqld]  
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_general_ci
init_connect = 'SET NAMES utf8mb4'

port = 3306
socket = /usr/local/mysql/data/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
datadir = /usr/local/mysql/data
#lower_case_table_names=1

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

## 修改my.cnf权限为777
chmod 777 /etc/my.cnf
chmod 644 /etc/my.cnf

6.启动mysql

## 测试 
/usr/local/mysql/support-files/mysql.server start

## 设置软连接启动
ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
ln -s /usr/local/mysql/mysql.sock /var/mysql.sock
service mysql restart

## 修改密码
mysql -uroot -p
alter user 'root'@'localhost' identified by '125803';

## 开放远程连接
mysql> use mysql;
msyql> update user set user.Host='%' where user.User='root';
mysql> flush privileges;    //刷新权限

## 防火墙放行3306
systemctl status firewalld
firewall-cmd --permanent --query-port=3306/tcp  ## 查询端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent  ## 开放端口
firewall-cmd --zone=public --remove-port=3306/tcp --permanent  ## 删除端口
firewall-cmd --reload
firewall-cmd --zone=public --list-ports  ## 查看开放端口列表

7.开机自启

## 拷贝文件
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
chkconfig --add mysqld
chkconfig --list
## 如果看到mysqld的服务，并且3,4,5都是on的话则成功，如果是off，则执行
chkconfig --level 345 mysqld on
reboot
ps -ef|grep mysql

3.redis

1.安装gcc

## redis6要求gcc版本5.2+
yum install -y gcc
gcc -v

## 更新
yum -y install centos-release-scl
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils
scl enable devtoolset-9 bash

## 长期使用gcc 9.1
echo "source /opt/rh/devtoolset-9/enable" >> /etc/profile

2.下载解压安装包

cd /usr/local/

yum -y install wget
wget https://download.redis.io/releases/redis-6.2.9.tar.gz

## 解压
tar -zxf ./redis-6.2.9.tar.gz

3.安装

mv redis-6.2.9 redis
cd redis

## 测试
make test 

## ERROR
You need tcl 8.5 or newer in order to run the Redis test
make[1]: *** [test] 错误 1
make[1]: 离开目录“/usr/local/redis-6.2.6/src”
make: *** [test] 错误 2

## 解决方案
yum install tcl
make install

4.环境配置

## 备份原始配置文件
mkdir conf
cp redis.conf ./conf

## 测试启动
./src/redis-server ./redis.conf

cd ~
vim .bash_profile

## 添加
export REDIS_HOME=/usr/local/redis
export PATH=$REDIS_HOME/src:$PATH

source .bash_profile

## 变量配置生效
redis-cli -v

## 修改环境配置
vim /usr/local/redis/redis.conf

# 注释掉这句，允许远程连接
bind 127.0.0.1
# 允许后台运行服务
daemonize yes
# 关闭保护模式，否则外部ip无法连接
protected-mode no
# 配置登录验证密码
requirepass 000

5.启动

redis-server /usr/local/redis/redis.conf

## 防火墙开放端口
firewall-cmd --zone=public --add-port=6379/tcp --permanent
firewall-cmd --reload