1 CentOS8部署
1.1 系统安装
图略......
安装耗时约2小时。
1.2 系统配置
1.2.1 关闭SELINUX
vi /etc/sysconfig/selinux
SELINUX=disabled
1.2.2 基本网络配置
1、通过网卡配置文件配置
vi /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=cc8d4dff-ccc5-45d9-ad44-f610800ebd53
DEVICE=ens33
ONBOOT=no
BOOTPROTO="static"
BROADCAST="192.168.100.255"
IPADDR="192.168.100.201"
NETMASK="255.255.255.0"
ONBOOT="yes"
2、修改计算机名
vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=boco201
GATEWAY=192.168.100.2
3、配置DNS
vi /etc/resolv.conf
nameserver 223.5.5.5
nameserver 223.6.6.6
4、查看主机名
hostnamectl ，查看一下当前主机名的情况，查看全部三种主机名
hostnamectl status，或者，查看全部三种主机名
hostnamectl --static，只查看静态
hostnamectl --transient，只查看瞬态
hostnamectl-pretty，只查看灵活主机名
hostname，查看到的是瞬态的（Tansient hostname）
cat /etc/hostname，查看到的是静态的（Static hostname）
5、配置完成后重新启动网络服务
service network restart
或systemctl restart network
或systemctl restart NetworkManager（centos8）
如有报错先关闭：service NetworkManager stop
service NetworkManager start //启动
service NetworkManager stop //关闭
service NetworkManager status //查看状态
chkconfig NetworkManager off //禁止开机启动
chkconfig NetworkManager on //开机启动
1.2.3 常用配置文件
/etc/host.conf，配置域名服务客户端的控制文件
/etc/hosts，完成主机名映射为IP地址的功能
/etc/resolv.conf，域名服务客户端的配置文件，域名服务器的位置
/etc/sysconfig/network，包含了主机最基本的网络信息，用于系统启动
/etc/sysconfig/network-script/，系统启动时初始化网络的一些信息
/etc/xinetd.conf，定义了由超级进程xinetd启动的网络服务
/etc/networks，完成域名与网络地址的映射
/etc/protocols，设定了主机使用的协议以及各个协议的协议号
/etc/services，设定主机的不同端口的网络服务
1.2.4 yum源配置
yum install ……
1、备份CentOS-Base.repo
2、修改CentOS-Base.repo
[base]
name=CentOS-$releasever - Base
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
3、yum clean all # 清除系统所有的yum缓存
4、yum makecache # 生成yum缓存
5、步骤2，也可直接下载一个CentOS-Base.repo来替换本地文件
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo
1.2.5 ssh免密码登录
1、boco201
vi /etc/ssh/sshd_config
PermitRootLogin yes
RSAAuthentication yes
PubkeyAuthentication yes
重启服务systemctl restart sshd.service
客户机生成公钥和私钥ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:eg06wqkxUjmAhcQAU5B8N9Ukk1UFv/5r0ryTnzzjBxQ root@boco201
The key's randomart image is:
+---[RSA 3072]----+
|@*o .+=o.oo. |
|+= . o .o. . E |
|o . . . . . |
| . . o |
| + S o |
| . o . o o . . |
|. o + + . . .o..|
| . + . o .oOo|
| . +BX|
+----[SHA256]-----+
ssh-copy-id -i /root/.ssh/id_rsa.pub root@boco202
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@boco202's password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'root@boco202'"
and check to make sure that only the key(s) you wanted were added.
ssh-copy-id -i /root/.ssh/id_rsa.pub root@boco203
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@boco203's password:
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'root@boco203'"
and check to make sure that only the key(s) you wanted were added.
2、boco202
如步骤1同样操作
3、boco203
如步骤1同样操作
1.2.6 root自动登录
vi /etc/gdm/custom.conf，末尾增加：
[daemon]
AutomaticLoginEnable=true
AutomaticLogin=root
1.3 卸载自带JDK
yum list | grep java
yum remove java-1.8.0-openjdk.x86_64
1.4 JDK安装
1、下载
wget https://download.oracle.com/otn/java/jdk/8u271-b09/61ae65e088624f5aaa0b1d2d801acb16/jdk-8u271-linux-x64.tar.gz?AuthParam=1607400230_1abc999c23658e05ad9dc572788394bc
2、解压缩包
tar -zxvf jdk-8u271-linux-x64.tar.gz -C /usr/java
3、设置环境
vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0_271
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
1.5 OpenJDK安装
不建议安装这个包
yum search java | grep jdk
java-11-openjdk.x86_64 : OpenJDK Runtime Environment 11
java-1.8.0-openjdk.x86_64 : OpenJDK Runtime Environment 8
java-11-openjdk-src.x86_64 : OpenJDK Source Bundle 11
java-11-openjdk-demo.x86_64 : OpenJDK Demos 11
java-11-openjdk-devel.x86_64 : OpenJDK Development Environment 11
java-11-openjdk-jmods.x86_64 : JMods for OpenJDK 11
java-1.8.0-openjdk-src.x86_64 : OpenJDK Source Bundle 8
java-1.8.0-openjdk-demo.x86_64 : OpenJDK Demos 8
java-11-openjdk-javadoc.x86_64 : OpenJDK 11 API documentation
java-1.8.0-openjdk-devel.x86_64 : OpenJDK Development Environment 8
java-11-openjdk-headless.x86_64 : OpenJDK Headless Runtime Environment 11
java-1.8.0-openjdk-javadoc.noarch : OpenJDK 8 API documentation
java-1.8.0-openjdk-headless.x86_64 : OpenJDK Headless Runtime Environment 8
java-11-openjdk-javadoc-zip.x86_64 : OpenJDK 11 API documentation compressed in single archive
java-1.8.0-openjdk-javadoc-zip.noarch : OpenJDK 8 API documentation compressed in single archive
java-1.8.0-openjdk-accessibility.x86_64 : OpenJDK 8 accessibility connector
yum install java-1.8.0-openjdk.x86_64
Repository AppStream is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository PowerTools is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
上次元数据过期检查：0:58:44 前，执行于 2020年12月04日 星期五 01时15分03秒。
依赖关系解决。
====================================================================================================================================
软件包 架构 版本 仓库 大小
====================================================================================================================================
安装:
java-1.8.0-openjdk x86_64 1:1.8.0.272.b10-1.el8_2 AppStream 326 k
安装依赖关系:
copy-jdk-configs noarch 3.7-1.el8 AppStream 27 k
java-1.8.0-openjdk-headless x86_64 1:1.8.0.272.b10-1.el8_2 AppStream 34 M
javapackages-filesystem noarch 5.3.0-1.module_el8.0.0+11+5b8c10bd AppStream 30 k
lksctp-tools x86_64 1.0.18-3.el8 base 100 k
ttmkfdir x86_64 3.0.9-54.el8 AppStream 62 k
tzdata-java noarch 2020d-1.el8 AppStream 190 k
xorg-x11-fonts-Type1 noarch 7.5-19.el8 AppStream 522 k
启用模块流:
javapackages-runtime 201801
事务概要
====================================================================================================================================
安装 8 软件包
总下载：35 M
安装大小：119 M
确定吗？[y/N]： y
下载软件包：
(1/8): copy-jdk-configs-3.7-1.el8.noarch.rpm 101 kB/s | 27 kB 00:00
(2/8): javapackages-filesystem-5.3.0-1.module_el8.0.0+11+5b8c10bd.noarch.rpm 236 kB/s | 30 kB 00:00
(3/8): ttmkfdir-3.0.9-54.el8.x86_64.rpm 546 kB/s | 62 kB 00:00
(4/8): java-1.8.0-openjdk-1.8.0.272.b10-1.el8_2.x86_64.rpm 514 kB/s | 326 kB 00:00
(5/8): tzdata-java-2020d-1.el8.noarch.rpm 661 kB/s | 190 kB 00:00
(6/8): lksctp-tools-1.0.18-3.el8.x86_64.rpm 251 kB/s | 100 kB 00:00
(7/8): xorg-x11-fonts-Type1-7.5-19.el8.noarch.rpm 789 kB/s | 522 kB 00:00
(8/8): java-1.8.0-openjdk-headless-1.8.0.272.b10-1.el8_2.x86_64.rpm 2.4 MB/s | 34 MB 00:13
------------------------------------------------------------------------------------------------------------------------------------
总计 2.1 MB/s | 35 MB 00:16
警告：/var/cache/dnf/AppStream-a520ed22b0a8a736/packages/copy-jdk-configs-3.7-1.el8.noarch.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID 8483c65d: NOKEY
CentOS-8 - AppStream 309 kB/s | 1.6 kB 00:00
导入 GPG 公钥 0x8483C65D:
Userid: "CentOS (CentOS Official Signing Key) <security@centos.org>"
指纹: 99DB 70FA E1D7 CE22 7FB6 4882 05B5 55B3 8483 C65D
来自: /etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
确定吗？[y/N]： y
导入公钥成功
运行事务检查
事务检查成功。
运行事务测试
事务测试成功。
运行事务
运行脚本: copy-jdk-configs-3.7-1.el8.noarch 1/1
运行脚本: java-1.8.0-openjdk-headless-1:1.8.0.272.b10-1.el8_2.x86_64 1/1
准备中 : 1/1
安装 : lksctp-tools-1.0.18-3.el8.x86_64 1/8
运行脚本: lksctp-tools-1.0.18-3.el8.x86_64 1/8
安装 : tzdata-java-2020d-1.el8.noarch 2/8
安装 : ttmkfdir-3.0.9-54.el8.x86_64 3/8
安装 : xorg-x11-fonts-Type1-7.5-19.el8.noarch 4/8
运行脚本: xorg-x11-fonts-Type1-7.5-19.el8.noarch 4/8
安装 : javapackages-filesystem-5.3.0-1.module_el8.0.0+11+5b8c10bd.noarch 5/8
安装 : copy-jdk-configs-3.7-1.el8.noarch 6/8
安装 : java-1.8.0-openjdk-headless-1:1.8.0.272.b10-1.el8_2.x86_64 7/8
运行脚本: java-1.8.0-openjdk-headless-1:1.8.0.272.b10-1.el8_2.x86_64 7/8
安装 : java-1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2.x86_64 8/8
运行脚本: java-1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2.x86_64 8/8
运行脚本: copy-jdk-configs-3.7-1.el8.noarch 8/8
运行脚本: java-1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2.x86_64 8/8
验证:copy-jdk-configs-3.7-1.el8.noarch 1/8
验证:java-1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2.x86_64 2/8
验证:java-1.8.0-openjdk-headless-1:1.8.0.272.b10-1.el8_2.x86_64 3/8
验证:javapackages-filesystem-5.3.0-1.module_el8.0.0+11+5b8c10bd.noarch 4/8
验证:ttmkfdir-3.0.9-54.el8.x86_64 5/8
验证:tzdata-java-2020d-1.el8.noarch 6/8
验证: xorg-x11-fonts-Type1-7.5-19.el8.noarch 7/8
验证: lksctp-tools-1.0.18-3.el8.x86_64 8/8
Installed products updated.
已安装:
copy-jdk-configs-3.7-1.el8.noarch java-1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2.x86_64
java-1.8.0-openjdk-headless-1:1.8.0.272.b10-1.el8_2.x86_64 javapackages-filesystem-5.3.0-1.module_el8.0.0+11+5b8c10bd.noarch
lksctp-tools-1.0.18-3.el8.x86_64 ttmkfdir-3.0.9-54.el8.x86_64
tzdata-java-2020d-1.el8.noarch xorg-x11-fonts-Type1-7.5-19.el8.noarch
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