Redis cache server not running. Please contact Administrator / Tech support on bench serve --port 8001

Question

Basically im working on frappe framework of python, When i run “bench serve --port 8001” the server is started and im able to login too, but im getting an exception “Redis cache server not running. Please contact Administrator / Tech support”. But on “bench start” which by default start the server on port 8000, everything is working fine, im not getting any redis-server exception. can anyone explain why its happening?

Answer 1

When you create a new bench using frappe, it will create a Procfile in the root folder. It includes web, redis, socket.io and redis workers.

$ cat Procfile 

redis_cache: redis-server config/redis_cache.conf
redis_socketio: redis-server config/redis_socketio.conf
redis_queue: redis-server config/redis_queue.conf

web: bench serve --port 8001

socketio: /Users/chillaranand/homebrew/bin/node apps/frappe/socketio.js

watch: bench watch

schedule: bench schedule
worker_short: bench worker --queue short 1>> logs/worker.log 2>> logs/worker.error.log
worker_long: bench worker --queue long 1>> logs/worker.log 2>> logs/worker.error.log
worker_default: bench worker --queue default 1>> logs/worker.log 2>> logs/worker.error.log

When users run bench start it will start 10 processes. All these processes are needed to run a frappe site smoothly.

When user runs bench serve --port 80001, it will start only web process and all other process are not started. Due to this, when web service tries to connect to redis, it is failing.

Users should always run bench start so that all processes will start.