CentOS服务器环境配置

网络，yun源配置

• 一般都是配置好的

  # internet
  /etc/sysconfig/network-scripts/ifcfg-eth0
  # yum repo
  /etc/yum.repos.d/CentOS-Base.repo

  # 更换清华yum源
  [base]
  name=CentOS-$releasever - Base
  #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
  baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/
  gpgcheck=1
  gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
  
  #released updates
  [updates]
  name=CentOS-$releasever - Updates
  #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
  baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/
  gpgcheck=1
  gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
  
  #additional packages that may be useful
  [extras]
  name=CentOS-$releasever - Extras
  #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
  baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/
  gpgcheck=1
  gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
  
  #additional packages that extend functionality of existing packages
  [centosplus]
  name=CentOS-$releasever - Plus
  #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
  baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/
  gpgcheck=1
  enabled=0
  gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
  # 更新软件包缓存
  sudo yum makecache

MySQL yum安装

# 下载官方的yum源
wget https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm
# Rocky Linux 9的OpenSSL是3.x，需要el9-1构建，使用下面的yum源
wget https://dev.mysql.com/get/mysql80-community-release-el9-1.noarch.rpm
# 安装rpm
rpm -ivh mysql80-community-release-el7-3.noarch.rpm
# 查看mysql的版本，默认是8.0
yum list|grep mysql
# 这个yum源支持多版本的mysql，所以可以修改一下安装的版本
vim /etc/yum.repos.d/mysql-community.repo

#将enabled置为1的就是要下载的版本，这里把connectors和tools取消
[mysql80-community]
name=MySQL 8.0 Community Server
baseurl=http://repo.mysql.com/yum/mysql-8.0-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

[mysql-connectors-community]
name=MySQL Connectors Community
baseurl=http://repo.mysql.com/yum/mysql-connectors-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

[mysql-tools-community]
name=MySQL Tools Community
baseurl=http://repo.mysql.com/yum/mysql-tools-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

# 查看是否是正确的版本
yum repolist enabled | grep mysql
#安装mysql
yum install mysql-community-server --nogpgcheck
#可能遇到的错误 Error: GPG check FAILED
使用 yum install xxx.rpm --nogpgcheck跳过公钥检查
yum install mysql-community-server --nogpgcheck

# 启动mysql并查看状态
systemctl start  mysqld.service
systemctl status mysqld.service
#找到root用户的密码
grep "password" /var/log/mysqld.log
mysql -uroot -pxxxx
ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
# 如果需要若密钥，修改规则
set global validate_password_policy=0;
set global validate_password_length=1;
# mysql8.0
SET GLOBAL validate_password.policy = 0;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'the password';
# 远程访问
use mysql;
update user set host='%' where user='root';
# 新建用户
CREATE USER 'zwq'@'%' IDENTIFIED BY 'xxxxx';
GRANT ALL ON *.* TO 'zwq'@'%';
flush privileges;
# 防火墙
systemctl status firewalld
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload

yum list installed
# 删除mysql yum源
yum -y remove mysql80-community-release.noarch

JDK

rpm -ivh jdk-8u241-linux-x64.rpm
java -version

Redis

• 编译

  tar -zxvf redis-7.2.4.tar.gz
  cp -r /zwq/install-bag/redis-7.2.4 /usr/local/redis
  rm -rf redis-7.2.4
  cd /usr/local/redis
  make MALLOC=libc
  cd src
  make install
  ./redis-server

• 配置文件

  vim /usr/local/redis/redis.conf
  注释bind 127，使其能远程访问
  # bind 127.0.0.1
  protected-mode 改成yes
  daemonize 改成yes
  # 配置密码
  requirepass foobared
  requirepass xxxxx

• 内存过度提交overcommit_memory配置

  vi /etc/sysctl.conf
  vm.overcommit_memory = 1
  sysctl -p
  sysctl vm.overcommit_memory

• 指定配置文件启动

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

Nginx

• 下载

  http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz
  https://nginx.org/en/download.html

• g++

  # Rocky Linux没有C++编译器（g++），需要安装
  dnf install gcc-c++
  g++ --version

• pcre

  # 查看是否安装
  pcre-config --version
  tar zxvf pcre-8.35.tar.gz
  cd pcre-8.35
  ./configure
  make && make install

• nginx

  # rockylinux中glibc版本较高，需要高版本nginx，可以用nginx-1.24.0
  tar zxvf nginx-1.12.2.tar.gz
  tar zxvf nginx-1.24.0.tar.gz
  cd nginx-1.24.0
  ./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
  # 如果需要指定pcre路径：--with-pcre=/usr/local/pcre-8.35
  make
  make install
  /usr/local/nginx/sbin/nginx -v
  # 删除nginx-1.24.0文件夹
  /usr/local/nginx/sbin/nginx   # 启动
  /usr/local/nginx/sbin/nginx -s reload     # 重新载入配置文件
  /usr/local/nginx/sbin/nginx -s reopen     # 重启 Nginx
  /usr/local/nginx/sbin/nginx -s stop       # 停止 Nginx