群晖-python运行状态提醒

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1.获取运行状态

获取群晖运行状态用到的命令如下表：

命令 说明
top 获取CPU使用率
cat /sys/class/hwmon/hwmon0/temp1_input 获取CPU温度
free 获取RAM使用率
df 获取DISK使用率
ifconfig 获取IP地址
  • 1.1 获取CPU温度：
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$ cat /sys/class/hwmon/hwmon0/temp1_input
    36000   
# 实际温度需要除以1000
  • 1.2 获取CPU使用率
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$ top -bn1
    top - 19:31:32 up 1 day, 15:30,  1 user,  load average: 0.19, 0.05, 0.01 [IO: 0.00, 0.00, 0.00 CPU: 0.19, 0.05, 0.01]
    Tasks: 372 total,   1 running, 371 sleeping,   0 stopped,   0 zombie
    %Cpu(s): 22.2 us, 36.1 sy,  0.0 ni, 41.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    GiB Mem :    5.651 total,    0.201 free,    0.660 used,    4.789 buff/cache
    GiB Swap:    5.391 total,    5.391 free,    0.000 used.    4.586 avail Mem

    PID USER      PR  NI    VIRT    RES  %CPU  %MEM     TIME+ S COMMAND
    16145 root      20   0  467.5m  82.6m 94.12 1.427  77:03.73 S /var/packages/DownloadStation/target/sbin/transmissiond +
    ...
    ...
# -bn1 参数： n1指定只运行一次，b输出结果为batch-mode，避免出现乱码
# 可以看到CPU的信息在第3行，只要输出CPU这一行

$ top -bn1 | awk '/Cpu\(s\)/'
    %Cpu(s):  5.4 us,  8.1 sy,  0.0 ni, 86.5 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
# 缩写分别是user, system, nice, idle, wait, ...
# 计算CPU使用率等于 1 - idle%
  • 1.3 获取RAM使用率
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$ free -m
                  total        used        free      shared  buff/cache   available
    Mem:           5786         674         208         126        4904        4698
    Swap:          5519           0        5519
# -m 参数是指定输出结果以 MB 为单位
# 修改一下命令，只要输出 Mem 这一行

$ free -m | awk '/Mem/'
    Mem:           5786         674         208         126        4904        4698
# 计算RAM使用率等于 (total - available) / total； （仅供参考）
  • 1.4 获取DISK使用率
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$ df -h
    Filesystem         Size  Used Avail Use% Mounted on
    /dev/md0           2.3G  1.3G  909M  59% /
    devtmpfs           2.9G     0  2.9G   0% /dev
    tmpfs              2.9G  184K  2.9G   1% /dev/shm
    tmpfs              2.9G   18M  2.9G   1% /run
    tmpfs              2.9G     0  2.9G   0% /sys/fs/cgroup
    tmpfs              2.9G  2.3M  2.9G   1% /tmp
    /dev/vg1/volume_2  889G  389G  501G  44% /volume2
    /dev/vg1000/lv     890G  680G  211G  77% /volume1
# -h 参数是指定输出结果人性化，自动选择单位
# 修改一下命令，只要输出 /dev/root 这一行

$ df -h | awk '/vg1000/'
    /dev/vg1000/lv     890G  680G  211G  77% /volume1
  • 1.5 获取 IP 地址
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$ ifconfig eth0
    eth0      Link encap:Ethernet  HWaddr 00:11:32:B9:D1:64
          inet addr:192.168.31.xxx  Bcast:192.168.31.xxx  Mask:255.255.255.0
                ...
# ifconfig 命令要用管理员运行
# wlan0 参数是指wifi网络；如果是有线网络，改为： eth0
# 修改一下命令，只要输出 inet 这一行

$ ifconfig eth0 | awk '/inet/'
    inet addr:192.168.31.xxx  Bcast:192.168.31.xxx  Mask:255.255.255.0

2. 完整的代码

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import os
import time
import requests

def now():
    return '[' + time.strftime('%Y-%m-%d %H:%M:%S') + ']'

# run command
def run_cmd(cmd):
    p = os.popen(cmd).readline().strip().split()
    return p

# cpu_temp = run_cmd(" vcgencmd measure_temp ")
temp1_in = run_cmd(" cat /sys/class/hwmon/hwmon0/temp1_input ")
cpu_temp = float(temp1_in[0])/1000.0
cpu_stat = run_cmd(" top -bn1 | awk '/Cpu\(s\)/' ")
cpu_used = 1 - float(cpu_stat[7])/100.0

ram_stat = run_cmd(" free -m | awk '/Mem/' ")
ram_used = (int(ram_stat[1]) - int(ram_stat[6])) / float(ram_stat[1])

disk_st0 = run_cmd(" df -h | awk '/vg1/' ")
disk_st1 = run_cmd(" df -h | awk '/vg2/' ")
ipconfig = run_cmd(" ifconfig eth0 | awk '/inet/' ")
print(temp1_in, cpu_temp, cpu_stat, cpu_used, sep='\n')
print(ram_stat, ram_used, disk_st0, disk_st1, ipconfig, sep='\n')

###
status = now() + '\n\n'
status += 'Synology Status:      \n'
status += 'CPU  Used  = {:.2%}   \n'.format(cpu_used)
status += 'CPU  Temp  = {:.2f}°C \n'.format(cpu_temp)
status += 'RAM  Total = {}M      \n'.format(ram_stat[1])
status += 'RAM  Used  = {:.2%}   \n'.format(ram_used)
status += 'DISK Total = {}, {}   \n'.format(disk_st0[1], disk_st1[1])
status += 'DISK Used  = {}, {}   \n'.format(disk_st0[2], disk_st1[2])
status += 'DISK Perc  = {}, {}   \n'.format(disk_st0[4], disk_st1[4])
status += 'IP Address = {}       \n'.format(ipconfig[1].replace('addr:', ''))
print(status)

# Send to ftqq
key = 'SCUxxxxxxxxxxxxxxx'
api = 'https://sc.ftqq.com/{}.send'.format(key)
send_data = {'text': 'Synology_Status', 'desp': status}
res = requests.post(api, data=send_data)
print(res.content)

# Send to wechat
import wechat_push as wp

access_token, _ = wp.get_access_token(wp.corp_id, wp.corp_secret)
wp.wechat_push_text(agent_id=wp.agent_id, access_token=access_token, message=status)