linux服务器中最重要的两个配置是CPU和内存。那么怎么开始查看CPU核数和内存，以及使用情况，是日常运维中使用最多的操作。
查看linux服务器cpu最简单的命令是 cat /proc/cpuinfo
查看linux服务器cpu最简单的命令是 lscpu
查看linux服务器内存
cat /proc/meminfo
查看linux服务器内存最简单的命令： free -h
lscpu信息
[root@tXX-XXX-app logs]# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 85
Model name: Intel(R) Xeon(R) Platinum 8255C CPU @ 2.50GHz
Stepping: 5
CPU MHz: 2494.140
BogoMIPS: 4988.28
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
L3 cache: 36608K
NUMA node0 CPU(s): 0-3可以看出操作系统的架构是x86 64位的操作系统。
CPU 操作模型支持32位 和 64位
byte Order 为 Little Endian
cpu核数为 4核
CPU主频为2.50GHZ
CPU缓存为4级缓存，分别为32k 32k 4096K 36608K
free -h 内存信息
[root@tXX-XXX-app logs]# free -h
total used free shared buff/cache available
Mem: 15G 6.2G 266M 1.1M 8.7G 8.7G
Swap: 0B 0B 0B总内存 15G 已用 6.2G 可用8.7G
磁盘信息 du -h /home 查看home目录各文件夹占用磁盘空间大小。
[root@tXX-XX-app logs]# du -h /home
44M /home/docker/apps/eureka
8.0K /home/docker/apps/nginx/conf.d/bak_20230227
16K /home/docker/apps/nginx/conf.d
8.0K /home/docker/apps/nginx/conf/bak_20230227
24K /home/docker/apps/nginx/conf
29M /home/docker/apps/nginx/www/ctg-member/ctg-member/assets
30M /home/docker/apps/nginx/www/ctg-member/ctg-member
30M /home/docker/apps/nginx/www/ctg-member
30M /home/docker/apps/nginx/www
12G /home/docker/apps/nginx/logs
20K /home/docker/apps/nginx/cert
12G /home/docker/apps/nginx
12G /home/docker/apps
16K /home/docker/script/apollo
36K /home/docker/script
12G /home/docker
392M /home/project/ctg-member-plat/jar
8.1M /home/project/ctg-member-plat/logs
16K /home/project/ctg-member-plat/script/subscript
28K /home/project/ctg-member-plat/script
400M /home/project/ctg-member-plat
52M /home/project/sso/jar
56K /home/project/sso/logs
8.0K /home/project/sso/script
52M /home/project/sso
451M /home/project
12K /home/redis/myredis/data/appendonlydir
16K /home/redis/myredis/data
24K /home/redis/myredis
28K /home/redis
67M /home/tingyun
13G /home