How to check whether the Redis server is running

Question

How to check whether the Redis server is running?

If it's not running, I want to fallback to using the database.

I'm using the FuelPHP framework, so I'm open to a solution based on this, or just standard PHP.

score 249 · Answer 1 · answered Jul 07 '17 at 23:53

249

You can use command line to determine if redis is running:

redis-cli ping

you should get back

PONG

that indicates redis is up and running.

answered Jul 07 '17 at 23:53

Amir Hassan Azimi

9,180
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it won't work on redis cluster – Manish Chauhan Feb 13 '22 at 17:01
In any case, that response is based on this official `redis` reference [redis-cli](https://redis.io/docs/ui/cli/) – Franco Gil Mar 05 '23 at 21:57

score 15 · Answer 2 · edited May 09 '22 at 08:45

15

redis-cli -h host_url -p 6379 ping

edited May 09 '22 at 08:45

MonkeyDreamzzz

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answered Oct 01 '21 at 04:54

shubham goyal

161
1
4

score 11 · Answer 3 · answered Jun 21 '21 at 12:32

11

All answers are great,

aAnother way can be to check if default REDIS port is listening

i.e port number 6379 lsof -i:6379

if you don't get any output for above command then it implies redis is not running.

answered Jun 21 '21 at 12:32

Ankit Tiwari

1,069
10
15

1

This is the way if you are running it off a docker container – kchak May 18 '22 at 10:43

score 8 · Accepted Answer · edited Mar 05 '19 at 11:06

8

What you can do is try to get an instance (\Redis::instance()) and work with it like this:

try
{
    $redis = \Redis::instance();
    // Do something with Redis.
}
catch(\RedisException $e)
{
    // Fall back to other db usage.
}

But preferably you'd know whether redis is running or not. This is just the way to detect it on the fly.

edited Mar 05 '19 at 11:06

Chris Harrison

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answered Mar 26 '12 at 20:08

Frank de Jonge

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score 6 · Answer 5 · answered Jan 13 '23 at 00:11

You can use this command on linux:

systemctl status redis-server

It will give you this output:

● redis-server.service - Advanced key-value store
Loaded: loaded (/lib/systemd/system/redis-server.service; disabled; vendor preset: enabled)
Active: active (running) since Wed 2023-01-11 19:14:30 UTC; 1 day 4h ago
Docs: http://redis.io/documentation, man:redis-server(1)
Main PID: 43270 (redis-server)
Status: "Ready to accept connections"
Tasks: 5 (limit: 477)
Memory: 18.5M
CPU: 3min 34.450s
CGroup: /system.slice/redis-server.service
└─43270 "/usr/bin/redis-server 127.0.0.1:6379" "" "" "" "" "" "" ""
Jan 11 19:14:30 ip-172-31-17-230 systemd[1]: Starting Advanced key-value store...
Jan 11 19:14:30 ip-172-31-17-230 systemd[1]: Started Advanced key-value store.

score 4 · Answer 6 · answered Dec 27 '14 at 02:56

4

you can do it by this way.

$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

echo $redis->ping();

and then check if it print +PONG, which show redis-server is running.

answered Dec 27 '14 at 02:56

Yann叶

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How to check whether the Redis server is running

6 Answers6

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