CPU
lscpu，查看的是cpu的统计信息
[root@node9 ~]# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 24
On-line CPU(s) list: 0-23
Thread(s) per core: 2
Core(s) per socket: 6
Socket(s): 2
NUMA node(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 62
Stepping: 4
CPU MHz: 1201.101
BogoMIPS: 4205.99
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 15360K
NUMA node0 CPU(s): 0-5,12-17
NUMA node1 CPU(s): 6-11,18-23
查看/proc/cpuinfo,可以知道每个cpu信息，如每个CPU的型号，主频等。截取的是我在实验室里使用的一台存储，有24个CPU，信息较多，只截取了一部分。
[root@node9 ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
stepping : 4
microcode : 0x416
cpu MHz : 1250.484
cache size : 15360 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm kaiser tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt
bugs :
bogomips : 4200.32
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
......
processor : 23
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
stepping : 4
microcode : 0x416
cpu MHz : 1227.433
cache size : 15360 KB
physical id : 1
siblings : 12
core id : 5
cpu cores : 6
apicid : 43
initial apicid : 43
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb pln pts dtherm kaiser tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt
bugs :
bogomips : 4205.99
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
内存
概要查看内存情况 free -m，-m表示单位是MB
[root@node9 ~]# free -m
total used free shared buffers cached
Mem: 32204 2446 29758 0 218 1344
-/+ buffers/cache: 882 31321
Swap: 20479 0 20479
查看内存详细使用
cat /proc/meminfo
[root@node9 ~]# cat /proc/meminfo
MemTotal: 32977764 kB
MemFree: 30450068 kB
MemAvailable: 31949684 kB
Buffers: 224268 kB
Cached: 1398976 kB
SwapCached: 0 kB
Active: 884356 kB
Inactive: 920764 kB
Active(anon): 191680 kB
Inactive(anon): 2752 kB
Active(file): 692676 kB
Inactive(file): 918012 kB
Unevictable: 46100 kB
Mlocked: 46088 kB
SwapTotal: 20971516 kB
SwapFree: 20971516 kB
Dirty: 24 kB
Writeback: 0 kB
AnonPages: 228056 kB
Mapped: 106136 kB
Shmem: 2988 kB
Slab: 288652 kB
SReclaimable: 226776 kB
SUnreclaim: 61876 kB
KernelStack: 9104 kB
PageTables: 28872 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 37460396 kB
Committed_AS: 645384 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 86016 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 34216 kB
DirectMap2M: 2029568 kB
DirectMap1G: 33554432 kB
查看内存硬件信息
dmidecode -t memory
[root@node9 ~]# dmidecode -t memory
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x002D, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Multi-bit ECC
Maximum Capacity: 96 GB
Error Information Handle: Not Provided
Number Of Devices: 8
Handle 0x002F, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x002D
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: P1_DIMMA1
Bank Locator: Node0_Bank0
Type: DDR3
Type Detail: Registered (Buffered)
Speed: 1333 MHz
Manufacturer: Samsung
Serial Number: 37AFFC8F
Asset Tag: Dimm0_AssetTag
Part Number: M393B1G70QH0-
Rank: 1
Configured Clock Speed: 1333 MHz
......
Handle 0x004F, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x003F
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: P2_DIMMH2
Bank Locator: Node1_Bank0
Type: Unknown
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Dimm7_Manufacturer
Serial Number: Dimm7_SerNum
Asset Tag: Dimm7_AssetTag
Part Number: Dimm7_PartNum
Rank: Unknown
Configured Clock Speed: Unknown
磁盘
lsblk——查看硬盘和分区分布
[root@node9 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 278.5G 0 disk
├─sda1 8:1 0 200M 0 part /boot
├─sda2 8:2 0 20G 0 part [SWAP]
└─sda3 8:3 0 258.3G 0 part /
sdb 8:16 0 1.9T 0 disk
sdc 8:32 0 4.1T 0 disk
fdisk -l 查看硬盘和分区的详细信息
[root@node9 ~]# fdisk -l
Disk /dev/sdb: 2096.1 GB, 2096078258176 bytes
255 heads, 63 sectors/track, 254833 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00064816
Device Boot Start End Blocks Id System
WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdc: 4491.6 GB, 4491596267520 bytes
255 heads, 63 sectors/track, 546072 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
Disk /dev/sda: 299.0 GB, 298999349248 bytes
255 heads, 63 sectors/track, 36351 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00088001
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 2637 20971520 82 Linux swap / Solaris
/dev/sda3 2637 36352 270814208 83 Linux
网卡
查看配置文件名中包含’eth’的网卡硬件信息
lspci | grep -i ‘eth’
[root@node9 ~]# lspci | grep -i 'eth'
04:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
04:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
查看系统的所有网络接口 ifconfig -a
[root@node9 ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:25:90:EA:13:08
inet addr:192.168.12.29 Bcast:192.168.12.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:feea:1308/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8203 errors:0 dropped:0 overruns:0 frame:0
TX packets:175 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:525386 (513.0 KiB) TX bytes:21544 (21.0 KiB)
Memory:dfd20000-dfd3ffff
eth1 Link encap:Ethernet HWaddr 00:25:90:EA:13:09
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:dfd00000-dfd1ffff
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:240 (240.0 b) TX bytes:240 (240.0 b)
查看某个网络接口的详细信息，例如eth0的详细参数和指标
ethtool eth0
[root@node9 ~]# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full #支持千兆半双工，全双工模式
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes #支持自适应模式，一般都支持
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes #网卡使用自适应模式
Speed: 1000Mb/s #现在网卡的速度是1000Mb
Duplex: Full #全双工
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes #表示有网络连接
其他
lspci，查看pci信息，即主板所有硬件槽信息。
[root@node9 ~]# lspci
00:00.0 Host bridge: Intel Corporation Xeon E5 v2/Core i7 DMI2 (rev 04)
00:01.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 1a (rev 04)
00:01.1 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 1b (rev 04)
00:02.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 2a (rev 04)
00:03.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 3a (rev 04)
00:03.2 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 3c (rev 04)
00:04.0 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 0 (rev 04)
00:04.1 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 1 (rev 04)
#信息较多，以下省略
......
查看bios信息
dmidecode -t bios
[root@node9 ~]# dmidecode -t bios
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: American Megatrends Inc.
Version: 3.0a
Release Date: 10/10/2013
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 8192 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
......
查看所有硬件信息
dmidecode -q