(Version française sur demande.)
My YunoHost configuration
Hardware: Raspberry Pi 3B v2 (1Gb RAM), WDLabs HDD as main storage, SDCard on boot only
Internet access: ethernet at home (Freebox, 16Mbps down / 1Mbps up)
YunoHost version: stable - 2.7.12 for all parts.
Diagnosis Result: https://paste.swordarmor.fr/jaxom/KvnO
System: Raspbian 8.0 Jessie, installed from BootBerry
Description of my problem
My server have been running smoothly with Yunohost for more than a year, with few users (family, non-techie) and various apps :
- Dokuwiki
- Framagames
- Hextris
- I Hate Money
- Jirafeau
- Keeweb
- Mailman
- MiniDLNA
- Multi custom webapp
- Multi custom webapp
- Custom Webapp
- Custom Webapp
- Nextcloud
- OpenSondage
- Rainloop
- Redirect
- Redirect
- Tiny Tiny RSS
- Wallabag
Since one or two weeks, the server freezes completely, at various times, and is unreacheable : no webpages displayed, no ssh login, but it answers to ping on LAN. The only recovery option, as I have no external monitor/keyboard to plug it in, is a power off/on cycle.
I can not make out what goes wrong, as my monitoring (see charts below) shows no noticeable excess in CPU or memory consumption before the event. It appears that the server keeps some kind of activity, because logging is present (syslog, but no authlog).
I did not make any operation just before appearance of this problem. Configuration have been unchanged for a few months and this unstability is most recent.
My question is : where can I look to find the cause of this behaviour ?
Last documented event was last night : off-line started at 9:01pm and power cycle was performed at 0:42am. Here is the full syslog and authlog as a beggining. I have multiple subdomains (almost one per app) so I may upload them as needed. SSH auth is only allowed via public-key, on port 22.
Syslog : https://paste.swordarmor.fr/jaxom/6SZC&ln
Authlog : https://paste.swordarmor.fr/jaxom/jiJv&ln
(they are much verbose, 26k and 7k lines )
Thanks in advance to the community for the help, and please don’t hesitate to redirect me to relevant ressources elsewhere.