查看linux服务器配置信息

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内存

• free命令

[root@host-192-168-4-200 ~]# free
             total       used       free     shared    buffers     cached
Mem:       6931468    5599092    1332376          0       9976     101712
-/+ buffers/cache:    5487404    1444064
Swap:      4128760    3717832     410928

• 对于free命令，可以加上-m参数，使其显示单位为Mb

[root@host-192-168-4-200 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          6769       5957        811          0          5         51
-/+ buffers/cache:       5899        869
Swap:         4031       3971         60

硬盘

• df命令用于显示磁盘分区上的可使用的磁盘空间

[root@host-192-168-4-68 ~]# df -h 
Filesystem                    Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root  537G   38G  472G   8% /
tmpfs                          16G     0   16G   0% /dev/shm
/dev/vda1                     485M   39M  421M   9% /boot

• 查看硬盘和分区分布

[root@host-192-168-4-200 ~]# lsblk
NAME                        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
vda                         252:0    0    50G  0 disk 
├─vda1                      252:1    0   500M  0 part /boot
└─vda2                      252:2    0  49.5G  0 part 
  ├─VolGroup-lv_root (dm-0) 253:0    0 144.6G  0 lvm  /
  └─VolGroup-lv_swap (dm-1) 253:1    0     4G  0 lvm  [SWAP]
vdb                         252:16   0   100G  0 disk 
└─VolGroup-lv_root (dm-0)   253:0    0 144.6G  0 lvm  /

• 查看硬盘和分区的详细信息

[root@host-192-168-4-200 ~]# fdisk -l

Disk /dev/vda: 53.7 GB, 53687091200 bytes
16 heads, 63 sectors/track, 104025 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bd363

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *           3        1018      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/vda2            1018      104026    51915776   8e  Linux LVM
Partition 2 does not end on cylinder boundary.

Disk /dev/vdb: 107.4 GB, 107374182400 bytes
16 heads, 63 sectors/track, 208050 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/VolGroup-lv_root: 155.2 GB, 155231191040 bytes
255 heads, 63 sectors/track, 18872 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/VolGroup-lv_swap: 4227 MB, 4227858432 bytes
255 heads, 63 sectors/track, 514 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000