Having Trouble Connecting

Hello,

I am having issues where Redis can’t connect. First I installed Redis on XAMPP and had this issue. Figured it might be related to XAMPP or I missed something, so I then asked my host to install it on my production site.

Well, it’s the same issue of not being able to connect there too.

I’ve tried adding these to wp-config.php:

define('WP_CACHE_KEY_SALT', 'string');
define('WP_CACHE', true);

I also tried these in wp-config.php:

define( 'WP_REDIS_HOST', '127.0.0.1' );
define( 'WP_REDIS_PORT', 6379 );

Tried rebooting VPS.

This PHP snippet:

<?php
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$res = $redis->ping();
echo $res;

Generates the following:
Caught exception: Connection refused

Is there some step I am missing after installing Redis on a server and activating your plugin to get it to connect/work properly?

Do I need to change some configuration in a Redis file somewhere? I’m not familiar with sudo, but is there some way I can check it in FTP/File Manager if this is the case?

Diagnostics:

Status: Not connected
Client: PhpRedis (v5.3.7)
Drop-in: Valid
Disabled: No
Ping: 
Connection Exception: Connection refused (RedisException)
Errors: [
    "Connection refused"
]
PhpRedis: 5.3.7
Relay: Not loaded
Predis: Not loaded
Credis: Not loaded
PHP Version: 7.4.29
Plugin Version: 2.0.25
Redis Version: Unknown
Multisite: No
Metrics: Disabled
Metrics recorded: null
Filesystem: Working
Global Prefix: "wpse_"
Blog Prefix: "wpse_"
Global Groups: [
    "blog-details",
    "blog-id-cache",
    "blog-lookup",
    "global-posts",
    "networks",
    "rss",
    "sites",
    "site-details",
    "site-lookup",
    "site-options",
    "site-transient",
    "users",
    "useremail",
    "userlogins",
    "usermeta",
    "user_meta",
    "userslugs",
    "redis-cache"
]
Ignored Groups: [
    "counts",
    "plugins",
    "themes",
    "blog-details",
    "blog-id-cache",
    "blog-lookup",
    "global-posts",
    "networks",
    "rss",
    "sites",
    "site-details",
    "site-lookup",
    "site-options",
    "site-transient",
    "users",
    "useremail",
    "userlogins",
    "usermeta",
    "user_meta",
    "userslugs",
    "redis-cache",
    "blog_meta",
    "bp_object_terms",
    "bp",
    "bp_last_activity",
    "bp_member_type",
    "bp_xprofile",
    "bp_xprofile_data",
    "bp_xprofile_fields",
    "bp_xprofile_groups",
    "xprofile_meta",
    "bp_user_mid",
    "bp_activity",
    "bp_activity_comments",
    "activity_meta",
    "bp_blog_meta",
    "bp_friends_requests",
    "bp_friends_friendships",
    "bp_friends_friendships_for_user",
    "bp_groups",
    "bp_group_admins",
    "bp_group_invite_count",
    "group_meta",
    "bp_groups_memberships",
    "bp_groups_memberships_for_user",
    "bp_messages",
    "bp_messages_threads",
    "bp_messages_unread_count",
    "message_meta",
    "bp_notifications",
    "notification_meta"
]
Unflushable Groups: []
Drop-ins: [
    "Redis Object Cache Drop-In v2.0.25 by Till Krüss"
]