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| # 查看，关闭，并禁用网络管理服务
systemctl status NetworkManager
systemctl stop NetworkManager
systemctl disable NetworkManager
# 配置静态IP地址
vi /etc/sysconfig/network-scripts/ifcfg-ens33
:%s/"//g
----------------------------
BOOTPROTO=static
IPADDR=192.168.244.128
NETMASK=255.255.255.0
GATEWAY=192.168.244.2
DNS1=8.8.8.8
DNS2=114.114.114.114
----------------------------
#重启网络服务
systemctl restart network
# 测试网络状况
# 在虚拟机内ping外网
ping www.baidu.com
# 在windows DOS窗口下
ping 192.168.244.128
# 虚拟机的优化
vi /etc/selinux/config
------------------------------
SELINUX=disabled
------------------------------
vi /etc/ssh/sshd_config
------------------------------
UseDNS no
------------------------------
#重启ssh服务
systemctl restart sshd
# 本地镜像挂载
# vmware 虚拟机设置 勾选cd/dvd“已连接”
# cd /etc/yum.repos.d/
mkdir bak
mv *.repo bak
# 挂载光盘
mkdir /mnt/centos
mount /dev/sr0 /mnt/centos
------------------------------------------------------
mount: /dev/sr0 is write-protected, mounting read-only
------------------------------------------------------
#编辑本地仓库配置文件
vi base.repo
----------------------
[local]
name=local
baseurl=file:///mnt/centos
gpgcheck=0
enabled=1
----------------------
# 远程镜像源设置
# 安装 wget 命令
yum -y install wget
# 拉取阿里远程镜像服务地址
wget -O CentOs-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
# 更新yum
yum -y install net-tools
yum clean all
yum makecache
yum update -y
#优化存储策略
vi /etc/sysctl.conf
----------------------
vm.max_map_count=655360
# 尽量避免使用swap
vm.swappiness=0
# 修改内存分配策略
vm.overcommit_memory=1
vm.overcommit_ratio=80
----------------------
sysctl -p
#配置安全限制
vi /etc/security/limits.conf
---------------------
* soft nofile 65536
* hard nofile 65536
* soft nproc 65536
* hard nproc 65536
---------------------
#关闭THP(Transparent Huge Pages : 防止内存锁影响性能)
vim /etc/rc.local
#-----------------------------------------------------------
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
#-----------------------------------------------------------
#检查并安装 psmisc
rpm -qf /sbin/fuser
# psmisc-22.20-17.el7.x86_64
# 如果psmisc不存在
yum install psmisc -y
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