Sto riscontrando un problema insolito da quando ho aggiornato Discourse.
cd /var/discourse
./launcher enter app
cd /shared/log/rails
tail -f production.log
produce quanto segue all’infinito:
Job exception: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
unicorn.stderr.log è pieno di:
E, [2022-03-01T20:45:20.703541 #65] ERROR -- : reaped #<Process::Status: pid 30842 exit 1> worker=unknown
Detected dead worker 30842, restarting...
Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError)
MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.1.3/lib/redis/client.rb:126:in `call'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.1.3/lib/redis.rb:538:in `block in del'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/redis-4.1.3/lib/redis.rb:52:in `block in synchronize'
...
Chiaramente sembra essere un problema con Redis e sospetto che venga terminato in qualche modo, ma non sembra provenire dal log del kernel al di fuori dell’immagine docker, tuttavia all’interno dell’immagine docker vedo:
$ df -h
Filesystem Size Used Avail Use% Mounted on
overlay 157G 53G 97G 36% /
tmpfs 64M 0 64M 0% /dev
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
shm 512M 0 512M 0% /dev/shm
/dev/sda 157G 53G 97G 36% /shared
tmpfs 3.9G 0 3.9G 0% /proc/acpi
tmpfs 3.9G 0 3.9G 0% /proc/scsi
tmpfs 3.9G 0 3.9G 0% /sys/firmware
$ free
total used free shared buff/cache available
Mem: 8167420 3248628 794816 8596 4123976 4634504
Swap: 524284 268 524016
Non è il massimo, ma non sembra terribile.
Tornando al sistema host, htop mostra:
Qualche idea sui passaggi per eseguire il debug/risolvere questo problema?