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Private key file (/etc/sentinel/mqtt_key.pem) has too benevolent permissions

{"kernel":"4.14.131","hostname":"to","system":"ARMv7 Processor rev 1 (v7l)","model":"Turris Omnia","board_name":"cznic,turris-omnia","release":{"distribution":"TurrisOS","version":"5.0-dev","revision":"f2eec51","target":"mvebu/cortexa9","description":"TurrisOS 5.0-dev f2eec51"}}

observed in the logs

sentinel: WARNING [certgen.load_or_remove_key:110] Private key file (/etc/sentinel/mqtt_key.pem) has too benevolent permissions

stat /etc/sentinel/mqtt_key.pem

File: /etc/sentinel/mqtt_key.pem
Size: 227 Blocks: 8 IO Block: 4096 regular file
Device: 10h/16d Inode: 888 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)

namei -om /etc/sentinel/mqtt_key.pem

f: /etc/sentinel/mqtt_key.pem
drwxr-xr-x root root /
drwxr-xr-x root root etc
drwxr-xr-x root root sentinel
-rw-r--r-- root root mqtt_key.pem

Edited by Ghost User
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