Python 如何从systemctl status的输出中获取单个值
如果以上是我的状态输出。我想使用python脚本检索服务名称、正常运行时间和状态。Python 如何从systemctl status的输出中获取单个值,python,systemctl,Python,Systemctl,如果以上是我的状态输出。我想使用python脚本检索服务名称、正常运行时间和状态。systemctl status有一个允许使用的选项 尝试使用Python可以轻松解析的JSON: [root@localhost etc]# systemctl status blu_av ● blu_av.service - avscan Loaded: loaded (/etc/systemd/system/blu_av.service; disabled; vendor preset: disable
systemctl status
有一个允许使用的选项
尝试使用Python可以轻松解析的JSON:
[root@localhost etc]# systemctl status blu_av
● blu_av.service - avscan
Loaded: loaded (/etc/systemd/system/blu_av.service; disabled; vendor preset: disabled)
Active: active (running) since Fri 2018-03-16 16:31:14 IST; 3s ago
Main PID: 31934 (av)
CGroup: /system.slice/blu_av.service
├─31934 /opt/services/av
└─31956 /opt/services/av
Mar 16 16:31:14 localhost.localdomain systemd[1]: Started avscan.
Mar 16 16:31:14 localhost.localdomain systemd[1]: Starting avscan...
您可以使用
子流程从systemctl获取输出。请检查\u output()
,然后对其进行解析。也许您可以尝试解析输出。这是我用过的。请看一看并发表评论
$ sudo systemctl status --output=json-pretty nginx
输出:
import subprocess, re
def read_status(service):
p = subprocess.Popen(["systemctl", "status", service], stdout=subprocess.PIPE)
(output, err) = p.communicate()
output = output.decode('utf-8')
service_regx = r"Loaded:.*\/(.*service);"
status_regx= r"Active:(.*) since (.*);(.*)"
service_status = {}
for line in output.splitlines():
service_search = re.search(service_regx, line)
status_search = re.search(status_regx, line)
if service_search:
service_status['service'] = service_search.group(1)
#print("service:", service)
elif status_search:
service_status['status'] = status_search.group(1).strip()
#print("status:", status.strip())
service_status['since'] = status_search.group(2).strip()
#print("since:", since.strip())
service_status['uptime'] = status_search.group(3).strip()
#print("uptime:", uptime.strip())
return service_status
def main():
service = 'mysql'
reponse = read_status(service)
for key in reponse:
print('{}:{}'.format(key, reponse[key]))
if __name__ == '__main__':
main()
我只是用它来检查我的正则表达式
systemd
服务有一个完整的属性列表。以获取开始时间为例;您可以运行:
service:mysql.service
status:active (running)
since:Fri 2018-03-16 09:17:57 CET
uptime:6h ago
这会产生类似于:
systemctl show your.service --property=ActiveEnterTimestamp
查看所有属性的列表;快跑
ActiveEnterTimestamp=Fri 2019-05-03 09:35:02 CEST
有趣的一步是解析。您将如何执行此操作?@LutzHorn@user9279273只需使用
\n
作为分隔符拆分输出,您将得到一个包含每行输出的数组。从那以后,获得想要的信息应该很容易。那太棒了!
systemctl show your.service