關於雲服務器系統的基礎信息通常在購買時就有標明,至於一些資源的使用在雲服務器服務商的控制檯上也有相應的監控node
若是你對監控有更細緻化的需求,採用 node exporter
+ cadvisor
+ prometheus
+ grafana
也能夠作地更爲精細。linux
可是最重要的是: 你要了解哪些指標,以及它們如何在服務器上用命令敲出來shell
關於監控更多內容能夠參考如下章節: linux 各項監控指標後端
# 查看 linux 版本
$ uname -a
Linux shanyue 3.10.0-957.21.3.el7.x86_64 #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
# 查看 centos 版本號
$ cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)
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查看還有多少內存,available 指還有多少可用內存centos
# -h 指打印可視化信息
$ free -h
total used free shared buff/cache available
Mem: 3.7G 154M 2.1G 512K 1.5G 3.3G
Swap: 0B 0B 0B
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load average
指單位時間內的平均進程數bash
$ uptime
16:48:09 up 2 days, 23:43, 2 users, load average: 0.01, 0.21, 0.20
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# 公網IP
$ curl ifconfig.me
59.110.216.155
# 公網IP,上個地址的連通性不太好
$ curl icanhazip.com
59.110.216.155
# 私網IP
$ ifconfig eth0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.68.39 netmask 255.255.240.0 broadcast 172.17.79.255
ether 00:16:3e:0e:01:d8 txqueuelen 1000 (Ethernet)
RX packets 416550 bytes 505253322 (481.8 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 194374 bytes 67561825 (64.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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$ who -u
who -u
root pts/0 Oct 18 15:04 04:25 16860 (124.200.184.74)
root pts/2 Oct 18 18:10 01:22 2545 (124.200.184.74)
root pts/5 Oct 18 19:33 . 24952 (124.200.184.74)
$ last -a | head -6
root pts/5 Fri Oct 18 19:33 still logged in 124.200.184.74
root pts/2 Fri Oct 18 18:10 still logged in 124.200.184.74
root pts/2 Fri Oct 18 18:10 - 18:10 (00:00) 124.200.184.74
root pts/2 Fri Oct 18 17:54 - 18:10 (00:16) 124.200.184.74
root pts/2 Fri Oct 18 17:49 - 17:53 (00:03) 124.200.184.74
root pts/2 Fri Oct 18 16:49 - 17:25 (00:36) 124.200.184.74
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