linux-SSH远程服务的管理操作，查看虚拟机信息

1、SSH远程服务的管理操作

A、通过两种方式来拒绝开放一个端口22（SSH端口）:

要求：一种是通过修改配置文件并重新加载配置；另一种是通过命令操作方式来实现开放一个端口，并测试端口是否通。

1.firewalled-cmd --remove-port=22/tcp --permanent

2.Iptables –A OUTPUT –p tcp –sport 22 –j DROP

3. vi /etc/firewalld/zones/public.mxl

B、通过两种方式来结束ssh服务，并把步骤写在上面；

1.systemctl stop sshd.service

2.ps –aux|grep sshd ->查找PID

netstat -anpt|grep sshd ->查找PID

Kill -9 pid

C、把ssh服务设置成开机禁用，并把步骤及效果写在上面。

systemctl disable sshd.service

2、查看自己虚拟机的软（系统）硬件（CPU、内存、硬盘、主板）信息

Last login: Tue Jul 12 17:07:35 2016 from 192.168.102.1

[root@localhost ~]# firewall-cmd --remove-

--remove-forward-port=                --remove-lockdown-whitelist-command=  --remove-lockdown-whitelist-user=     --remove-rich-rule

--remove-icmp-block=                  --remove-lockdown-whitelist-context=  --remove-masquerade                   --remove-service=

--remove-interface=                   --remove-lockdown-whitelist-uid=      --remove-port=                        --remove-source=

[root@localhost ~]# firewall-cmd --remove-port=22/tcp

[root@localhost ~]# firewall-cmd --remove-port=22/tcp --permanent

success

[root@localhost ~]# vi /etc/firewalld/

firewalld.conf          lockdown-whitelist.xml  zones/

icmptypes/              services/               

[root@localhost ~]# vi /etc/firewalld/zones/public.xml

public.xml      public.xml.bak  public.xml.old  

[root@localhost ~]# vi /etc/firewalld/zones/public.xml

  <service name="ssh"/

<?xml version="1.0" encoding="utf-8"?>

<zone>

  <short>Public</short>

  <description>For use in public areas. You do not trust the other computers on networks to not harm your computer. Only selected incoming connections are accepted.</description>

  <service name="dhcpv6-client"/>

  <service name="ssh"/>

</zone>

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

~

[root@localhost ~]# ps -aux|grep sshd

root       1657  0.0  0.3  82544  3576 ?        Ss   09:00   0:00 /usr/sbin/sshd -D

root       3306  0.0  0.5 142856  5132 ?        Ss   09:02   0:00 sshd: root@pts/0

root       4160  0.0  0.0 112648   952 pts/0    S+   09:10   0:00 grep --color=auto sshd

[root@localhost ~]# mroe /etc/redhat-

redhat-access-insights/ redhat-release          

[root@localhost ~]# mroe /etc/redhat-release 

bash: mroe: command not found...

Similar command is: 'more'

[root@localhost ~]# more /etc/redhat-release 

Red Hat Enterprise Linux Server release 7.2 (Maipo)

[root@localhost ~]# lscpu

Architecture:          x86_64

CPU op-mode(s):        32-bit, 64-bit

Byte Order:            Little Endian

CPU(s):                1

On-line CPU(s) list:   0

Thread(s) per core:    1

Core(s) per socket:    1

Socket(s):             1

NUMA node(s):          1

Vendor ID:             GenuineIntel

CPU family:            6

Model:                 60

Model name:            Intel(R) Core(TM) i5-4210M CPU @ 2.60GHz

Stepping:              3

CPU MHz:               2594.069

BogoMIPS:              5188.13

Hypervisor vendor:     VMware

Virtualization type:   full

L1d cache:             32K

L1i cache:             32K

L2 cache:              256K

L3 cache:              3072K

NUMA node0 CPU(s):     0

[root@localhost ~]# more /proc/menminfo

/proc/menminfo: No such file or directory

[root@localhost ~]# more /proc/meminfo

MemTotal:        1001332 kB

MemFree:           67032 kB

MemAvailable:     201628 kB

Buffers:             208 kB

Cached:           228336 kB

SwapCached:           24 kB

Active:           415700 kB

Inactive:         163424 kB

Active(anon):     287596 kB

Inactive(anon):    70792 kB

Active(file):     128104 kB

Inactive(file):    92632 kB

Unevictable:           0 kB

Mlocked:               0 kB

SwapTotal:       2097148 kB

SwapFree:        2097104 kB

Dirty:                 0 kB

Writeback:             0 kB

AnonPages:        350532 kB

Mapped:           100432 kB

Shmem:              7808 kB

Slab:             109324 kB

SReclaimable:      52964 kB

SUnreclaim:        56360 kB

KernelStack:       12416 kB

PageTables:        23236 kB

NFS_Unstable:          0 kB

Bounce:                0 kB

WritebackTmp:          0 kB

CommitLimit:     2597812 kB

Committed_AS:    2290764 kB

VmallocTotal:   34359738367 kB

VmallocUsed:      171356 kB

VmallocChunk:   34359564288 kB

HardwareCorrupted:     0 kB

AnonHugePages:    120832 kB

HugePages_Total:       0

HugePages_Free:        0

HugePages_Rsvd:        0

HugePages_Surp:        0

Hugepagesize:       2048 kB

DirectMap4k:      102272 kB

DirectMap2M:      946176 kB

DirectMap1G:           0 kB

[root@localhost ~]# dmidecode|grep -A16"system infomation$"

grep: 16system infomation$: invalid context length argument

[root@localhost ~]# dmidecode|grep -A16"system information$"

grep: 16system information$: invalid context length argument

[root@localhost ~]# dmidecode|grep -A16 "system Information$"

[root@localhost ~]# dmidecode|grep -A16 "System Information$"

System Information

        Manufacturer: VMware, Inc.

        Product Name: VMware Virtual Platform

        Version: None

        Serial Number: VMware-56 4d 9d 11 e5 08 1f 74-e7 bd fd d1 8e fe 36 91

        UUID: 119D4D56-08E5-741F-E7BD-FDD18EFE3691

        Wake-up Type: Power Switch

        SKU Number: Not Specified

        Family: Not Specified

Handle 0x0002, DMI type 2, 15 bytes

Base Board Information

        Manufacturer: Intel Corporation

        Product Name: 440BX Desktop Reference Platform

        Version: None

        Serial Number: None

        Asset Tag: Not Specified

[root@localhost ~]# smartctl -a /dev/sda

smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.0-327.el7.x86_64] (local build)

Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===

Vendor:               VMware,

Product:              VMware Virtual S

Revision:             1.0

User Capacity:        21,474,836,480 bytes [21.4 GB]

Logical block size:   512 bytes

Rotation Rate:        Solid State Device

Device type:          disk

Local Time is:        Wed Jul 13 09:19:30 2016 CST

SMART support is:     Unavailable - device lacks SMART capability.