I noticed some issues with the recent update. I just updated from 3.4.0 beta1 to the latest (3.4.0.beta2-dev) and the site seems to work and then after a while (within 2 hours) the site stops responding (I get a host error via cloudflare). I have the old docker still up (split app/db) so pointed the proxy back the old docker container which still works. I’m trying to figure out how best to debug it. Is there a way to assign a temporary different hostname to the docker to debug the instance separately (without re-writing the database to the new entries)?

Is there a way to view the logs from the command line?

Yup, take a look in /var/discourse/shared/standalone/log/rails

There seem to be a lot of Redis errors, though these are current even though I reverted back to the old docker container. E, [2024-08-29T13:47:47.112726 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send' E, [2024-08-29T13:47:47.112738 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in ' E, [2024-08-29T13:47:47.112748 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly' E, [2024-08-29T13:47:47.112768 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in ' E, [2024-08-29T13:47:47.112781 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat' E, [2024-08-29T13:47:47.112790 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat' E, [2024-08-29T13:47:47.112799 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep' E, [2024-08-29T13:47:47.112807 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join' E, [2024-08-29T13:47:47.112815 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in ` ' E, [2024-08-29T13:47:47.112823 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load' E, [2024-08-29T13:47:47.112831 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in ` ' E, [2024-08-29T13:47:57.124969 #74] ERROR -- : master loop error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) (Redis::CannotConnectError) E, [2024-08-29T13:47:57.125051 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:398:in `rescue in establish_connection' E, [2024-08-29T13:47:57.125063 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:379:in `establish_connection' E, [2024-08-29T13:47:57.125072 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:115:in `block in connect' E, [2024-08-29T13:47:57.125080 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:344:in `with_reconnect' E, [2024-08-29T13:47:57.125088 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:114:in `connect' E, [2024-08-29T13:47:57.125109 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:409:in `ensure_connected' E, [2024-08-29T13:47:57.125118 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:269:in `block in process' E, [2024-08-29T13:47:57.125132 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:356:in `logging' E, [2024-08-29T13:47:57.125142 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:268:in `process' E, [2024-08-29T13:47:57.125150 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `call' E, [2024-08-29T13:47:57.125159 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/mini_profiler/profiling_methods.rb:89:in `block in profile_method' E, [2024-08-29T13:47:57.125167 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:270:in `block in send_command' E, [2024-08-29T13:47:57.125181 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `synchronize' E, [2024-08-29T13:47:57.125190 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `send_command' E, [2024-08-29T13:47:57.125198 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/commands/strings.rb:191:in `get' E, [2024-08-29T13:47:57.125207 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send' E, [2024-08-29T13:47:57.125216 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in ' E, [2024-08-29T13:47:57.125224 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly' E, [2024-08-29T13:47:57.125232 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in ' E, [2024-08-29T13:47:57.125241 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat' E, [2024-08-29T13:47:57.125264 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat' E, [2024-08-29T13:47:57.125272 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep' E, [2024-08-29T13:47:57.125283 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join' E, [2024-08-29T13:47:57.125291 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in ` ' E, [2024-08-29T13:47:57.125299 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load' E, [2024-08-29T13:47:57.125308 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in ` ' E, [2024-08-29T13:48:07.136412 #74] ERROR -- : master loop error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) (Redis::CannotConnectError) E, [2024-08-29T13:48:07.136504 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:398:in `rescue in establish_connection' E, [2024-08-29T13:48:07.136517 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:379:in `establish_connection' E, [2024-08-29T13:48:07.136526 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:115:in `block in connect' E, [2024-08-29T13:48:07.136534 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:344:in `with_reconnect' E, [2024-08-29T13:48:07.136542 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:114:in `connect' E, [2024-08-29T13:48:07.136550 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:409:in `ensure_connected' E, [2024-08-29T13:48:07.136559 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:269:in `block in process' E, [2024-08-29T13:48:07.136567 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:356:in `logging' E, [2024-08-29T13:48:07.136590 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:268:in `process' E, [2024-08-29T13:48:07.136599 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/client.rb:161:in `call' E, [2024-08-29T13:48:07.136607 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/mini_profiler/profiling_methods.rb:89:in `block in profile_method' E, [2024-08-29T13:48:07.136615 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:270:in `block in send_command' E, [2024-08-29T13:48:07.136626 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `synchronize' E, [2024-08-29T13:48:07.136638 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis.rb:269:in `send_command' E, [2024-08-29T13:48:07.136646 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/redis-4.8.1/lib/redis/commands/strings.rb:191:in `get' E, [2024-08-29T13:48:07.136656 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `public_send' E, [2024-08-29T13:48:07.136665 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (3 levels) in ' E, [2024-08-29T13:48:07.136674 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:29:in `ignore_readonly' E, [2024-08-29T13:48:07.136682 #74] ERROR -- : /var/www/discourse/lib/discourse_redis.rb:148:in `block (2 levels) in ' E, [2024-08-29T13:48:07.136690 #74] ERROR -- : /var/www/discourse/app/jobs/regular/run_heartbeat.rb:16:in `last_heartbeat' E, [2024-08-29T13:48:07.136698 #74] ERROR -- : config/unicorn.conf.rb:182:in `check_sidekiq_heartbeat' E, [2024-08-29T13:48:07.136707 #74] ERROR -- : config/unicorn.conf.rb:269:in `master_sleep' E, [2024-08-29T13:48:07.136716 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join' E, [2024-08-29T13:48:07.136735 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/unicorn-6.1.0/bin/unicorn:128:in ` ' E, [2024-08-29T13:48:07.136744 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load' E, [2024-08-29T13:48:07.136752 #74] ERROR -- : /var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in ` '

I wonder if it’s worth rebooting the server?

My understanding is that each ‘app’ container hosts its own Redis server, so there should be no way that one docker container could ‘taint’ another docker container’s Redis server? Reviewing logs, all the old logs seem to be very boring, some only 20 bytes long. Just for today, there’s 8.1MB of error messages in unicorn.stdout.log-20240829 which I guess was rotated and fast approaching another 8MB in unicorn.stdout.log. Corresponding errors in stderr.log: Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Error connecting to Redis on localhost:6379 (Redis::TimeoutError) Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) sidekiq-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) sidekiq-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 2 [default] Unexpected error in MiniSchedulerLongRunningJobLogger thread : Redis::CannotConnectError : Error connecting to Redis on localhost:6379 (Redis::TimeoutError) discourse-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) sidekiq-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] heartbeat: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) sidekiq-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Job exception: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) sidekiq-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] Error connecting to Redis on localhost:6379 (Redis::TimeoutError) Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 2 [default] Unexpected error in MiniSchedulerLongRunningJobLogger thread : Redis::CannotConnectError : Error connecting to Redis on localhost:6379 (Redis::TimeoutError) discourse-exception Failed to report error: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) 3 [default] heartbeat: Error connecting to Redis on localhost:6379 (Redis::TimeoutError) ``` Timing seems to coincide with update.

Silly me, the continuing error logs are because the updated docker instance was still running! I stopped the updated docker instance and the logs went quiet again. I’ll see if restarting it produces the same errors.

I think it is the same error as this: Error connecting to Redis Maybe it is some kind of race condition on start-up? As an aside, could we get timestamps added to unicorn.stderr.log? That would help in debugging!

Are launcher rebuild logs saved anywhere? I wanted to through them to see if there was any clue as to why this happened.

No, I believe it’s just printing to console. You could do ./launcher rebuild app > buildlog.txt Next time.

[image] Isambard: My understanding is that each ‘app’ container hosts its own Redis server, so there should be no way that one docker container could ‘taint’ another docker container’s Redis server But they use the same extremely storage, so if you didn’t stop the new one, bad things will happen.

Issue with new update: debugging options

Product Support Self-hosting

pfaffman (Jay Pfaffman) August 30, 2024, 6:56pm 17

You’ve already separated out the database.

Yes, I’ve done it before, both using managed redis and with a redis-only container

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Discourse web interface becomes unresponsive a few minutes after starting Self-hosting	34	7350	January 8, 2018
Redis connection timed out Self-hosting	29	10305	July 2, 2018
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Error connecting to Redis Self-hosting	17	7446	March 21, 2023
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Issue with new update: debugging options

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