监控操作系统信息
$ free
total used free shared buff/cache available
Mem: 3880248 338340 3145052 8780 396856 3317340
Swap: 3145724 0 3145724
$ free | awk '{print $7}'
3316936
$ free | awk '{print $NF}'
available
3317060
3145724
$ free | grep Mem | awk '{print $NF}'
3317168
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 1928176 0 1928176 0% /dev
tmpfs 1940124 0 1940124 0% /dev/shm
tmpfs 1940124 8780 1931344 1% /run
tmpfs 1940124 0 1940124 0% /sys/fs/cgroup
/dev/mapper/centos-root 27245572 6279508 20966064 24% /
/dev/sda1 1038336 153444 884892 15% /boot
tmpfs 388028 0 388028 0% /run/user/1000
$ df | grep "\/$" | awk '{print $4}'
20966064
$ LANG=C lscpu #避免输出中含有中文，临时切成英文
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 70
Model name: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
Stepping: 1
CPU MHz: 2194.918
BogoMIPS: 4389.83
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 6144K
L4 cache: 131072K
NUMA node0 CPU(s): 0,1
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm invpcid_single fsgsbase avx2 invpcid md_clear flush_l1d
$ LANG=C lscpu | grep "Model name" | awk -F: '{print $2}'
Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
$ LANG=C lscpu | grep "^CPU(s)" | awk -F: '{print $2}'
2
$ uptime
05:25:52 up 7:19, 2 users, load average: 0.00, 0.01, 0.05
$ uptime | awk '{print $NF}'
0.05
$ ifconfig enp0s3
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.125 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::6cbd:44ca:6298:e935 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:4b:d3:af txqueuelen 1000 (Ethernet)
RX packets 14732 bytes 1384112 (1.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8591 bytes 1365657 (1.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ ifconfig enp0s3 | grep "RX p" | awk '{print "进站流量为："$5"字节"}'
进站流量为：1402349字节
$ ifconfig enp0s3 | grep "TX p" | awk '{print "出站流量为："$5"字节"}'
出站流量为：1379797字节
# grep "Failed" /var/log/secure
Mar 22 05:30:26 localhost sudo: caowg : TTY=pts/0 ; PWD=/home/caowg/shell/day05 ; USER=root ; COMMAND=/bin/grep Failed /var/log/secure
Mar 22 05:32:21 localhost sshd[2960]: Failed password for caowg from 192.168.0.155 port 65479 ssh2
Mar 22 05:32:25 localhost sshd[2960]: Failed password for caowg from 192.168.0.155 port 65479 ssh2
# grep "Failed" /var/log/secure | awk '{print $11}'
;
192.168.0.155
192.168.0.155
小结
- 本文通过awk的灵活能力，展示了如何使用awk来对服务器进行基础监控
- 过滤内存信息
- 过滤硬盘信息
- 过滤CPU信息
- 过滤网卡信息
- 过滤日志数据
- 希望对你能有所帮助，谢谢
