How to connect to Redis with php via docker?

Question

PHP

I use docker-compose, I connect redis like this

redis:
      restart: always
      image: redis
      depends_on:
        - vesta

In php redis installed via Dockerfile like this

RUN pecl install -o -f redis \
&&  rm -rf /tmp/pear \
&&  docker-php-ext-enable redis

Everything seems to be set up right. The radish container starts up, phpinfo() shows that the radish is installed.
But trying to connect to radish via php

$redis = new Redis();
$redis->connect('127.0.0.1');
echo $redis->ping();

gives an error message

Fatal error: Uncaught RedisException: Redis server went away

Tried passing different hosts: 192.168.0.1,127.0.0.1,0.0.0.0,redis - this exception is always returned. What am I doing wrong?

Answer 1

What does it docker-compose psshow for you - are all containers running?

192.168.0.1

This is the ip of the host, there is no Redis there.

127.0.0.1

This is a localhost, there is no Redis there.

0.0.0.0

This is generally invalid ip.

redis

But by name it should work. You need to figure out the network name and do docker network inspect %name%to see Redis' ip - it should work for sure.