- Why I did it
Following code to judge whether a process is running inside a docker could get stuck on the simx platform
subprocess.Popen(["docker", "--version"],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
When it gets stuck, the config-chassisdb service can not be successfully started, thus the system can not be booted up.
root@sonic:/# service config-chassisdb status
config-chassisdb.service - Config chassis_db
Loaded: loaded (/lib/systemd/system/config-chassisdb.service; enabled; vendor preset: enabled)
Active: activating (start) since Thu 2022-12-15 09:23:02 UTC; 29min ago
Main PID: 571 (config-chassisd)
Tasks: 14 (limit: 9501)
Memory: 132.4M
CGroup: /system.slice/config-chassisdb.service
├─571 /bin/bash /usr/bin/config-chassisdb
├─575 /usr/bin/python3 /usr/local/bin/sonic-cfggen -H -v DEVICE_METADATA.localhost.platform
├─602 /bin/sh -c sudo decode-syseeprom -m
├─603 sudo decode-syseeprom -m
├─607 /usr/bin/python3 /usr/local/bin/decode-syseeprom -m
├─616 /bin/sh -c docker --version 2>/dev/null
└─617 docker --version
- How I did it
Use an alternative way to implement this function and issue can be avoided:
docker_env_file = '/.dockerenv'
return os.path.exists(docker_env_file) is False
- How to verify it
run regression on real hardware and simx platform.
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