cpu
lscpu命令，查看的是cpu的统计信息.
#lscpu
架构： x86_64 #cpu架构
CPU 运行模式： 32-bit, 64-bit
字节序： Little Endian
CPU: 2 #总共有2核
在线 CPU 列表： 0,1 #正在运行中的cpu
每个核的线程数： 1 #每个cpu核，只能支持一个线程，不支持超线程
每个座的核数： 2 #每个cpu2核
座： 1 #共有1个cpu
NUMA 节点： 1
厂商 ID： GenuineIntel
CPU 系列： 6
型号： 94
型号名称： Intel(R) Pentium(R) CPU G4400 @ 3.30GHz #cpu型号
步进： 3
CPU MHz： 800.114
CPU 最大 MHz： 3300.0000
CPU 最小 MHz： 800.0000
BogoMIPS： 6599.98
虚拟化： VT-x
L1d 缓存： 32K
L1i 缓存： 32K
L2 缓存： 256K
L3 缓存： 3072K
NUMA 节点0 CPU： 0,1
查看/proc/cpuinfo,查看每个cpu的具体信息，我这里有两个cpu
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 94
model name : Intel(R) Pentium(R) CPU G4400 @ 3.30GHz #cpu0
stepping : 3
microcode : 0xd6
cpu MHz : 800.113
cache size : 3072 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips : 6599.98
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 94
model name : Intel(R) Pentium(R) CPU G4400 @ 3.30GHz #cpu1
stepping : 3
microcode : 0xd6
cpu MHz : 800.084
cache size : 3072 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
内存
# free -h
总计 已用 空闲 共享 缓冲/缓存 可用
内存： 3.7G 1.0G 249M 166M 2.5G 2.3G
交换： 2.0G 648M 1.4G
查看内存详细
#cat /proc/meminfo
MemTotal: 3915832 kB
MemFree: 255484 kB
MemAvailable: 2431976 kB
Buffers: 573484 kB
Cached: 1711372 kB
SwapCached: 60888 kB
Active: 1714128 kB
Inactive: 1376180 kB
Active(anon): 473392 kB
Inactive(anon): 502468 kB
Active(file): 1240736 kB
Inactive(file): 873712 kB
Unevictable: 1992 kB
Mlocked: 16 kB
SwapTotal: 2097148 kB
SwapFree: 1433596 kB
磁盘
查看硬盘和分区
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part
├─centos-root 253:0 0 17G 0 lvm /
└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sr0 11:0 1 1024M 0 rom
查看硬盘的uuid号和分区文件系统
# blkid
/dev/sda1: UUID="f2397487-b271-4abd-8b1e-f5b465b60978" TYPE="xfs"
/dev/sda2:UUID="H1Cqcs-5sZg-Zv05-3M80-MO9J-mcHY-BVMI6S"TYPE="LVM2_member"
/dev/mapper/centos-root: UUID="cdfe8928-66d5-4d86-b2c8-037fb6db01ef" TYPE="xfs"
/dev/mapper/centos-swap:UUID="347b96f7-8778-4a41-9f7b-244a51f78080" TYPE="swap"
查看硬盘分区的详细信息
# fdisk -l
磁盘 /dev/sda：21.5 GB, 21474836480 字节，41943040 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x00073990
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 41943039 19921920 8e Linux LVM
磁盘 /dev/mapper/centos-root：18.2 GB, 18249416704 字节，35643392 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘 /dev/mapper/centos-swap：2147 MB, 2147483648 字节，4194304 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
网卡
查看所有网卡信息
# ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 #设备ip地址
inet 192.168.xxx.xxx netmask 255.255.255.0 broadcast 192.168.xxx.255
inet6 fe80::2313:55c0:58ec:767d prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:d6:8c:aa txqueuelen 1000 (Ethernet)
RX packets 1989 bytes 2285536 (2.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 791 bytes 67054 (65.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 #本地环回口
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
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
或者
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:d6:8c:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.190.139/24 brd 192.168.190.255 scope global noprefixroute dynamic ens33
valid_lft 1211sec preferred_lft 1211sec
inet6 fe80::2313:55c0:58ec:767d/64 scope link noprefixroute
valid_lft forever preferred_lft forever
查看某个网卡的详细信息
# ethtool ens33
Settings for ens33:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes #支持自适应模式
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes #默认使用自适应模式
Advertised FEC modes: Not reported
Speed: 1000Mb/s #现在网卡的速度
Duplex: Full #全双工
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: off (auto)
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes #有网线连接
查看网卡速率
# mii-tool ens33
ens33: negotiated 1000baseT-FD flow-control, link ok
查看网卡驱动
# ethtool -i ens33
driver: e1000 #驱动
version: 7.3.21-k8-NAPI
firmware-version:
expansion-rom-version:
bus-info: 0000:02:01.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
主板槽位信息
# lspci #查看pci信息，主板所有硬件槽信息
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
00:07.7 System peripheral: VMware Virtual Machine Communication Interface (rev 10)
00:0f.0 VGA compatible controller: VMware SVGA II Adapter
00:10.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 01)
00:11.0 PCI bridge: VMware PCI bridge (rev 02)
00:15.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.2 PCI bridge: VMware PCI Express Root Port (rev 01)
02:00.0 USB controller: VMware USB1.1 UHCI Controller
02:01.0 Ethernet controller: Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev 01)
02:02.0 Multimedia audio controller: Ensoniq ES1371/ES1373 / Creative Labs CT2518 (rev 02)
02:03.0 USB controller: VMware USB2 EHCI Controller
更详细的信息使用：lspci -v 或者 lspci -vv lspci -vv
# lspci -v
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
Subsystem: VMware Virtual Machine Chipset
Flags: bus master, medium devsel, latency 0
Kernel driver in use: agpgart-intel
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01) (prog-if 00 [Normal decode])
Flags: bus master, 66MHz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08)
Subsystem: VMware Virtual Machine Chipset
Flags: bus master, medium devsel, latency 0
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 8a [ISA Compatibility mode controller, supports both channels switched to PCI native mode, supports bus mastering])
Subsystem: VMware Virtual Machine Chipset
Flags: bus master, medium devsel, latency 64
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable)
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable)
I/O ports at 1060 [size=16]
Kernel driver in use: ata_piix
Kernel modules: ata_piix, pata_acpi, ata_generic
bios信息
# dmidecode -t bios
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Phoenix Technologies LTD
Version: 6.00
Release Date: 07/29/2019
Address: 0xEA480
Runtime Size: 88960 bytes
ROM Size: 64 kB
Characteristics:
ISA is supported
PCI is supported
PC Card (PCMCIA) is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
BIOS Revision: 4.6
Firmware Revision: 0.0
查看的更详细一点的话使用：# dmidecode -q