rockylinux8
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Day01 作业
初始化环境实现-安装包和依赖
系统:rocky8
机器数量:5
ip地址:192.168.0.11 192.168.0.12 192.168.0.13 192.168.0.14 192.168.0.15
jichao11 jichao12 jichao13 jichao14 jichao15
内存:7G 6核
安装对应的包和依赖
yum install -y conntrack ipvsadm ipset jq iptables curl sysstat libseccomp wget vim net-tools git
yum -y install wget jq psmisc vim net-tools nfs-utils socat telnet device-mapper-persistent-data lvm2 git network-scripts tar curl -y
yum -y install lrzsz git subversion gpm unzip zip curl wget net-tools vim gcc
yum -y install wget jq psmisc vim net-tools nfs-utils telnet yum-tuils device-mapper-persistent-data lvm2 git tar curl -y
yum -y install conntrack socat ipset ipvsadm ebtables
# 关闭selinux
vim /etc/selinux/config
# 关闭防火墙
service firewalld stop
systemctl disable firewalld.service
时间同步操作、更改系统句柄
# 时间同步
yum -y install chrony
vim /etc/chrony.conf
# 更改系统句柄数
ulimit -SHn 65535
cat>>/etc/security/limits.conf<<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF
vim /etc/sysconfig/network-scripts/ifcfg-ens160
阿里云镜像站点-rockylinux和epel
sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.aliyun.com/rockylinux|g' \
-i.bak \
/etc/yum.repos.d/Rocky-*.repo
yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm
sed -i 's|^#baseurl=https://download.example/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel*
sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel*
vim /etc/default/grub
# 实现最大使用 --numa=off
系统内核升级-6.9
更改剩余四台主机ip和hostname
ssh免密登录
# ssh五台机器免密登录 - 脚本 fgssh
# 注意给执行权限 x
ansible同步执行命令
# ansible实现同步执行任务
vim /etc/ansible/hosts
[allserver]
jichao11
jichao12
jichao13
jichao14
jichao15
ansible allserver -m command -a "chmod 600 /root/.ssh/config"