SUSE Linux Enterprise Server12 环境基本配置

suse-linux:~ # cat /etc/issue

Welcome to SUSE Linux Enterprise Server 12 SP3  (x86_64) - Kernel \r (\l).


suse-linux:~ # uname -a
Linux suse-linux 4.4.73-5-default #1 SMP Tue Jul 4 15:33:39 UTC 2017 (b7ce4e4) x86_64 x86_64 x86_64 GNU/Linux

suse-linux:~ # cd /etc/sysconfig/network/
suse-linux:/etc/sysconfig/network # ll
total 60
-rw-r--r-- 1 root root  9692 Nov 24 04:30 config
-rw-r--r-- 1 root root 11495 Nov 24 04:30 dhcp
drwxr-xr-x 1 root root    40 Nov 24 04:30 if-down.d
drwxr-xr-x 1 root root    66 Nov 24 04:30 if-up.d
-rw-r--r-- 1 root root   206 Nov 30 21:45 ifcfg-eth0
-rw------- 1 root root   147 Nov 24 04:30 ifcfg-lo
-rw-r--r-- 1 root root 21738 Oct 14  2016 ifcfg.template
drwx------ 1 root root     0 Jun 27  2017 providers
drwxr-xr-x 1 root root   206 Nov 24 04:30 scripts

配置ip,dns,网关

配置ip

suse-linux:/etc/sysconfig/network # cat ifcfg-eth0
BOOTPROTO='static'           # 网络模式：dhcp（自动获取）、static（静态，或者none也可以）
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR='192.168.10.150/24'   # IP地址
MTU=''
NAME=''
NETMASK=''
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'             # 开机启动网卡
DHCLIENT_SET_DEFAULT_ROUTE='yes'
PREFIXLEN=''

配置网关

suse-linux:/etc/sysconfig/network # vim ifroute-eth0    # 这个文件需要自己创建
default 192.168.10.2 - eth0

配置dns

suse-linux:/etc/sysconfig/network # cat /etc/resolv.conf
### /etc/resolv.conf file autogenerated by netconfig!
#
# Before you change this file manually, consider to define the
# static DNS configuration using the following variables in the
# /etc/sysconfig/network/config file:
#     NETCONFIG_DNS_STATIC_SEARCHLIST
#     NETCONFIG_DNS_STATIC_SERVERS
#     NETCONFIG_DNS_FORWARDER
# or disable DNS configuration updates via netconfig by setting:
#     NETCONFIG_DNS_POLICY=''
#
# See also the netconfig(8) manual page and other documentation.
#
# Note: Manual change of this file disables netconfig too, but
# may get lost when this file contains comments or empty lines
# only, the netconfig settings are same with settings in this
# file and in case of a "netconfig update -f" call.
#
### Please remove (at least) this line when you modify the file!
nameserver 192.168.10.2

验证

suse-linux:~ # systemctl restart network
suse-linux:~ # ping www.baidu.com -w 1
PING www.a.shifen.com (180.101.49.12) 56(84) bytes of data.
64 bytes from 180.101.49.12: icmp_seq=1 ttl=128 time=27.6 ms

--- www.a.shifen.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 27.625/27.625/27.625/0.000 ms

hostname

# 之所以提到hostname，是因为最近使用的时候，因为是自己测试使用，没有配置静态ip，导致机器重启，hostname变了，强迫症不喜欢，百度了好多，都是修改hosts文件，就自己尝试了修改dhcp配置文件后，得到了解决，因此更新一下
# 静态IP
suse-linux:~ # hostnamectl set-hostname suse-linux --static
# dhcp IP   // dhcp获取的ip，当机器重启的时候，hostname会变成bogon，导致修改的hostname会不生效，但是/etc/HOSTNAME文件中，hostname依旧是设置的hostname，有以下解决方法
suse-linux:~ # vim /etc/sysconfig/network/dhcp
DHCLIENT_HOSTNAME_OPTION=""    # 默认是AUTO，会影响hostname

ssh

suse-linux:~ # vim /etc/ssh/sshd_config     # 下面两项打开注释，改为yes即可 
PermitRootLogin yes            # 允许root用户登录
PasswordAuthentication yes     # 开启密码验证
suse-linux:~ # systemctl restart sshd

关闭防火墙

'suse里面的防火墙名称是SuSEfirewall2,和centos不一样'
suse-linux:~ # systemctl disbale SuSEfirewall2 --now
suse-linux:~ # systemctl status SuSEfirewall2    
● SuSEfirewall2.service - SuSEfirewall2 phase 2
   Loaded: loaded (/usr/lib/systemd/system/SuSEfirewall2.service; disabled; vendor preset: disabled)
   Active: inactive (dead)

总结

初次使用suse很不习惯，虽然有很多命令和centos是一样的，但是极个别的还是不太一样：
1、suse的软件安装方式使用的是zypper，而centos是yum（很多服务只好选择编译或者二进制的方式部署了）
2、suse的静态网卡配置也和centos不一样（当时配的我有点蒙圈）
3、suse的firewalld服务器名称和centos不一样
4、suse默认关闭selinux（这点很赞啊，centos如果disabled掉还需要重启机器，贼烦）
5、suse有的时候命令行会有小bug，会导致命令不存在（多敲几次回车就好了~~~）
6、suse终端默认显示的红色挺好看的（颜狗只看外表，不看其他的）
慢慢和suse磨合磨合