系统内核
- centos7.8
[root@bind ~]# uname -a Linux bind 3.10.0-1127.el7.x86_64 #1 SMP Tue Mar 31 23:36:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
- centos8.1
[root@lucky ~]# uname -a Linux lucky 4.18.0-147.el8.x86_64 #1 SMP Wed Dec 4 21:51:45 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
python
- centos7.8默认带python2.7
[root@bind ~]# python Python 2.7.5 (default, Apr 2 2020, 13:16:51) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux2 Type "help", "copyright", "credits" or "license" for more information.
- centos8.1取消了python2，直接默认python3.6
[root@lucky ~]# python bash: python: 未找到命令... 文件搜索失败: Cannot update read-only repo [root@lucky ~]# python3 Python 3.6.8 (default, Nov 21 2019, 19:31:34) [GCC 8.3.1 20190507 (Red Hat 8.3.1-4)] on linux Type "help", "copyright", "credits" or "license" for more information. >>>
ssh版本
- centos7.8
[root@bind ~]# ssh -V OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017
- centos8.1
[root@lucky ~]# ssh -V OpenSSH_8.0p1, OpenSSL 1.1.1c FIPS 28 May 2019
查看网卡
- centos7
[root@bind ~]# ifconfig -bash: ifconfig: 未找到命令
- centos8.1
[root@lucky ~]# ifconfig
enp0s5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.31.143 netmask 255.255.255.0 broadcast 192.168.31.255
inet6 fe80::90dd:a62d:d634:73d3 prefixlen 64 scopeid 0x20<link>
ether 00:1c:42:5f:37:57 txqueuelen 1000 (Ethernet)
RX packets 42551 bytes 3257067 (3.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 849 bytes 80616 (78.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 192 bytes 17088 (16.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 192 bytes 17088 (16.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:e5:06:85 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
selinux
- 7和8是一样的
[root@lucky ~]# cat /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=enforcing # SELINUXTYPE= can take one of these three values: # targeted - Targeted processes are protected, # minimum - Modification of targeted policy. Only selected processes are protected. # mls - Multi Level Security protection. SELINUXTYPE=targeted
firewalld
- 7和8的firewalld一样,不过8系列过渡成nftables 了。firewalld还是可以继续使用。
[root@lucky ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2020-06-12 20:38:30 CST; 3h 10min ago
Docs: man:firewalld(1)
Main PID: 836 (firewalld)
Tasks: 2 (limit: 5008)
Memory: 4.7M
CGroup: /system.slice/firewalld.service
└─836 /usr/libexec/platform-python -s /usr/sbin/firewalld --nofork --nopid
6月 12 20:38:29 lucky systemd[1]: Starting firewalld - dynamic firewall daemon...
6月 12 20:38:30 lucky systemd[1]: Started firewalld - dynamic firewall daemon.
软件安装
- centos7.8使用yum
[root@bind ~]# yum install nginx
- centos8.1可以使用yum或dnf安装
[root@lucky ~]# dnf install nginx [root@lucky ~]# yum install nginx
时间同步
- centos7.8可以使用ntp
[root@bind ~]# yum install ntp [root@bind ~]# ntpdate ntp.aliyun.com
- centos8.1不能使用ntp，只能使用chrony
[root@lucky ~]# yum install ntp 上次元数据过期检查：0:06:54 前，执行于 2020年06月13日 星期六 02时13分10秒。 未找到匹配的参数： ntp 错误：没有任何匹配: ntp [root@lucky ~]# dnf install chrony -y [root@lucky ~]# vim /etc/chrony.conf server ntp.aliyun.com iburst [root@lucky ~]# systemctl restart chronyd [root@lucky ~]# date 2020年 06月 13日 星期六 02:26:56 CST
mysql
- centos7.8自带的是mariadb
[root@bind ~]# yum list grep mariadb
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
已安装的软件包
grep.x86_64 2.20-3.el7 @anaconda
可安装的软件包
mariadb.x86_64 1:5.5.65-1.el7 base
- centos8.1自带的是mysql8.0
[root@lucky ~]# yum list grep mysql* 上次元数据过期检查：12:32:49 前，执行于 2020年06月13日 星期六 02时13分10秒。 已安装的软件包 grep.x86_64 3.1-6.el8 @anaconda 可安装的软件包 mysql.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-common.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-devel.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-errmsg.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-libs.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-server.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream mysql-test.x86_64 8.0.17-3.module_el8.0.0+181+899d6349 AppStream
- centos8.1默认mariadb10.3
[root@lucky ~]# yum list grep mariadb* 上次元数据过期检查：12:33:39 前，执行于 2020年06月13日 星期六 02时13分10秒。 已安装的软件包 grep.x86_64 3.1-6.el8 @anaconda 可安装的软件包 mariadb.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-backup.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-common.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-connector-c.i686 3.0.7-1.el8 AppStream mariadb-connector-c.x86_64 3.0.7-1.el8 AppStream mariadb-connector-c-config.noarch 3.0.7-1.el8 AppStream mariadb-connector-c-devel.i686 3.0.7-1.el8 AppStream mariadb-connector-c-devel.x86_64 3.0.7-1.el8 AppStream mariadb-connector-odbc.x86_64 3.0.7-1.el8 AppStream mariadb-devel.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-embedded.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-embedded-devel.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-errmsg.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-gssapi-server.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-java-client.noarch 2.2.5-2.el8 AppStream mariadb-oqgraph-engine.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-server.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-server-galera.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-server-utils.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream mariadb-test.x86_64 3:10.3.17-1.module_el8.1.0+257+48736ea6 AppStream
openjdk
- centos7.8Java的最低版本是1.6
[root@bind ~]# yum list grep java* 已加载插件：fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com 已安装的软件包 grep.x86_64 2.20-3.el7 @anaconda 可安装的软件包 java-1.6.0-openjdk.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base java-1.6.0-openjdk-demo.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base java-1.6.0-openjdk-devel.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base java-1.6.0-openjdk-javadoc.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base java-1.6.0-openjdk-src.x86_64 1:1.6.0.41-1.13.13.1.el7_3 base java-1.7.0-openjdk.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-accessibility.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-demo.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-devel.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-headless.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-javadoc.noarch 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.7.0-openjdk-src.x86_64 1:1.7.0.261-2.6.22.2.el7_8 updates java-1.8.0-openjdk.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-accessibility.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-accessibility.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-demo.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-demo.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-devel.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-devel.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-headless.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-headless.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-javadoc.noarch 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-javadoc-zip.noarch 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-src.i686 1:1.8.0.252.b09-2.el7_8 updates java-1.8.0-openjdk-src.x86_64 1:1.8.0.252.b09-2.el7_8 updates java-11-openjdk.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-demo.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-demo.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-devel.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-devel.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-headless.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-headless.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-javadoc.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-javadoc.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-javadoc-zip.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-javadoc-zip.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-jmods.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-jmods.x86_64 1:11.0.7.10-4.el7_8 updates java-11-openjdk-src.i686 1:11.0.7.10-4.el7_8 updates java-11-openjdk-src.x86_64 1:11.0.7.10-4.el7_8 updates java-atk-wrapper.i686 0.30.4-5.el7 base java-atk-wrapper.x86_64 0.30.4-5.el7 base java_cup.noarch 1:0.11a-16.el7 base java_cup-javadoc.noarch 1:0.11a-16.el7 base java_cup-manual.noarch 1:0.11a-16.el7 base javacc.noarch 5.0-10.el7 base javacc-demo.noarch 5.0-10.el7 base javacc-javadoc.noarch 5.0-10.el7 base javacc-manual.noarch 5.0-10.el7 base javacc-maven-plugin.noarch 2.6-17.el7 base javacc-maven-plugin-javadoc.noarch 2.6-17.el7 base javamail.noarch 1.4.6-8.el7 base javamail-javadoc.noarch 1.4.6-8.el7 base javapackages-tools.noarch 3.4.1-11.el7 base javassist.noarch 3.16.1-10.el7 base javassist-javadoc.noarch 3.16.1-10.el7 base
- centos8.1默认jdk是1.8
[root@lucky ~]# yum list grep java* 上次元数据过期检查：0:00:07 前，执行于 2020年06月13日 星期六 14时48分55秒。 已安装的软件包 grep.x86_64 3.1-6.el8 @anaconda 可安装的软件包 java-1.8.0-openjdk.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-accessibility.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-demo.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-devel.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-headless.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-javadoc.noarch 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-javadoc-zip.noarch 1:1.8.0.252.b09-2.el8_1 AppStream java-1.8.0-openjdk-src.x86_64 1:1.8.0.252.b09-2.el8_1 AppStream java-11-openjdk.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-demo.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-devel.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-headless.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-javadoc.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-javadoc-zip.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-jmods.x86_64 1:11.0.7.10-1.el8_1 AppStream java-11-openjdk-src.x86_64 1:11.0.7.10-1.el8_1 AppStream java-atk-wrapper.x86_64 0.33.2-6.el8 AppStream javapackages-filesystem.noarch 5.3.0-1.module_el8.0.0+11+5b8c10bd AppStream javapackages-tools.noarch 5.3.0-1.module_el8.0.0+11+5b8c10bd AppStream
CentOS 8和7版本对比
继续阅读
- 我的QQ
- QQ扫一扫
-
- 我的头条
- 头条扫一扫
-
评论