Question on message: (rspamd_proxy) <02dbd2>; proxy; proxy_backend_master_error_handler: abnormally

[Sophie Loe]

Newly installed rspamd 1.6.4 from Debian 9.1 on fresh system.

I saw this I/O error in the logs:

==> /var/log/rspamd/rspamd.log <==

2017-11-30 22:37:30 #2727(rspamd_proxy) <02dbd2>; milter; rspamd_milter_process_command: got connection from 127.0.0.1:52480

2017-11-30 22:37:30 #2727(rspamd_proxy) <02dbd2>; proxy; proxy_backend_master_error_handler: abnormally closing connection from backend: ::1, error: IO write error: Connection refused, retries left: 5

2017-11-30 22:37:30 #2727(rspamd_proxy) <02dbd2>; proxy; proxy_backend_master_error_handler: retry connection to: 127.0.0.1 retries left: 4

2017-11-30 22:37:30 #2729(normal) <079ce6>; task; accept_socket: accepted connection from 127.0.0.1 port 37382, task ptr: 00007FD4A6ED2000

Any idea what caused this? The backend is Redis 

[Sophie Loe]

Connection looks good to me. 

# rspamc -h 127.0.0.1:11334 stat

Results for command: stat (0.500 seconds)

Messages scanned: 17

Messages with action reject: 0, 0.00%

Messages with action soft reject: 0, 0.00%

Messages with action rewrite subject: 0, 0.00%

Messages with action add header: 3, 17.65%

Messages with action greylist: 1, 5.88%

Messages with action no action: 13, 76.47%

Messages treated as spam: 3, 17.65%

Messages treated as ham: 14, 82.35%

Messages learned: 4270

Connections count: 1

Control connections count: 0

Pools allocated: 23

Pools freed: 5

Bytes allocated: 542k

Memory chunks allocated: 41

Shared chunks allocated: 10

Chunks freed: 0

Oversized chunks: 2

Fuzzy hashes in storage "rspamd.com": 44707487

Fuzzy hashes stored: 44707487

Statfile: BAYES_SPAM type: sqlite3; length: 49.87M; free blocks: 0; total blocks: 645k; free: 0.00%; learned: 2917; users: 1; languages: 3

Statfile: BAYES_HAM type: sqlite3; length: 49.58M; free blocks: 0; total blocks: 637k; free: 0.00%; learned: 1353; users: 1; languages: 1

Total learns: 4270

[Sophie Loe]

bayes has 49 mb and in redis.conf I had set: maxmemory 32mb.  Changed to maxmemory 64mb and have not seen the I/O message for a little while.  

My server only has 384mb of RAM.