一、查看系统及内核版本
1.1 查看RHEL系统版本
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[root@imzcy ~]# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) [root@imzcy ~]# |
1.2 查看RHEL及CentOS系统版本
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[root@imzcy ~]# cat /etc/centos-release CentOS Linux release 7.2.1511 (Core) [root@imzcy ~]# |
1.3 查看系统内核版本号、硬件架构、主机名称和操作系统类型
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[root@imzcy ~]# uname -a Linux imzcy.cn 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux [root@imzcy ~]# |
二、查看服务器型号
使用 dmidecode --help 查看更多信息
2.1 通过过滤输出信息获取服务器制造商及具体型号信息
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[root@imzcy ~]# dmidecode|grep "System Information" -A9|egrep "Manufacturer|Product" Manufacturer: VMware, Inc. Product Name: VMware Virtual Platform [root@imzcy ~]# [root@imzcy ~]# dmidecode|grep "System Information" -A9|egrep "Manufacturer|Product" Manufacturer: HP Product Name: ProLiant DL385p Gen8 [root@imzcy ~]# |
2.2 通过使用 -s 选项获取指定的信息
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[root@imzcy ~]# dmidecode -s system-manufacturer HP [root@imzcy ~]# [root@imzcy ~]# dmidecode -s system-product-name ProLiant DL385p Gen8 [root@imzcy ~]# |
三、查看CPU相关信息
3.1 查看CPU型号：
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[root@imzcy ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c 24 Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz [root@imzcy ~]# |
3.2 查看物理CPU个数：
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[root@imzcy ~]# cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l 2 [root@imzcy ~]# |
3.3 查看每个物理CPU的核心数：
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[root@imzcy ~]# cat /proc/cpuinfo| grep "cpu cores"| uniq cpu cores : 6 [root@imzcy ~]# |
3.4 查看逻辑CPU个数：
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[root@imzcy ~]# cat /proc/cpuinfo| grep "processor"| wc -l 24 [root@imzcy ~]# |
四、查看内存相关信息
4.1 查看内存大小及使用情况
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[root@imzcy ~]# free -m total used free shared buffers cached Mem: 7820 7656 163 0 9 1153 -/+ buffers/cache: 6494 1325 Swap: 8191 4155 4036 [root@imzcy ~]# |
4.2 查看服务器上所有内存硬件信息
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[root@imzcy ~]# dmidecode -t memory { # dmidecode 2.11 SMBIOS 2.7 present. Handle 0x1000, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 1536 GB Error Information Handle: Not Provided Number Of Devices: 24 Handle 0x1100, DMI type 17, 34 bytes Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: 72 bits Data Width: 64 bits Size: 4096 MB Form Factor: DIMM Set: 1 Locator: DIMM_A1 Bank Locator: Not Specified Type: DDR3 Type Detail: Synchronous Registered (Buffered) Speed: 1333 MHz Manufacturer: 00CE06B300CE Serial Number: 483F8D60 Asset Tag: 01103211 Part Number: M393B6170CH0-CH9 Rank: 2 Configured Clock Speed: 1333 MHz Handle 0x1101, DMI type 17, 34 bytes Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: 72 bits Data Width: 64 bits Size: No Module Installed Form Factor: DIMM Set: 1 Locator: DIMM_A2 Bank Locator: Not Specified Type: DDR3 Type Detail: Synchronous Speed: Unknown Manufacturer: Serial Number: Asset Tag: Part Number: Rank: Unknown Configured Clock Speed: Unknown ... |
4.3 查看已经使用哪些插槽，每个插槽插入的内存大小
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[root@imzcy ~]# dmidecode|grep -A5 "Memory Device"|grep Size|grep -v Range { Size: 4096 MB Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: 4096 MB Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed Size: No Module Installed [root@imzcy ~]# |
五、查看磁盘相关信息
5.1 查看磁盘空间使用情况
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[root@imzcy ~]# df -h 文件系统 容量 已用 可用 已用% 挂载点 /dev/mapper/centos-root 18G 3.4G 15G 20% / devtmpfs 479M 0 479M 0% /dev tmpfs 489M 0 489M 0% /dev/shm tmpfs 489M 32M 458M 7% /run tmpfs 489M 0 489M 0% /sys/fs/cgroup /dev/sda1 497M 125M 373M 25% /boot tmpfs 98M 0 98M 0% /run/user/0 /dev/sr0 4.1G 4.1G 0 100% /mnt [root@imzcy ~]# |
5.2 查看当前系统所有可用块设备的信息
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[root@imzcy ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 500M 0 part /boot └─sda2 8:2 0 19.5G 0 part ├─centos-root 253:0 0 17.5G 0 lvm / └─centos-swap 253:1 0 2G 0 lvm [SWAP] sr0 11:0 1 4G 0 rom /mnt [root@imzcy ~]# |
5.3 查看当前系统块设备相关UUID、文件系统类型等信息
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[root@imzcy ~]# blkid /dev/block/8:2: UUID="fjUSDC-Ev12-H37M-baSV-8sNY-8X3L-7G2kDt" TYPE="LVM2_member" /dev/block/253:0: UUID="fee3ac46-a4c4-4956-bc2b-3304970e8706" TYPE="xfs" /dev/block/8:1: UUID="ce39dbe5-beaa-4bf8-9bf1-cae5af9d5a30" TYPE="xfs" /dev/block/253:1: UUID="7ff3d640-2793-4477-a21d-a01fd14f13ca" TYPE="swap" /dev/sr0: UUID="2015-12-09-23-14-10-00" LABEL="CentOS 7 x86_64" TYPE="iso9660" PTTYPE="dos" [root@imzcy ~]# |
六、查看物理网卡信息
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[root@imzcy ~]# lspci | grep -i 'eth' 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe 01:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe 02:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5720 Gigabit Ethernet PCIe [root@imzcy ~]# |
