READONLY You can’t write against a read only replica. (in Sentinel)

Hello there

I’ve set a cluster which have 2webservers (sync by unison) and 2 dbservers (mariadb galera) and haproxy 7 load balancer instance.

I’m trying to set Redis-Sentinel up but i’m getting an issue

Webserver1 is master for redis sentinel and webserver2 is slave for redis sentinel.

I’ve finished to set up redis sentinel and then I’m testing my website but i’m getting an issue

Error establishing a Redis connection
READONLY You can't write against a read only replica.

WordPress is unable to establish a connection to Redis. This means that the connection information in your wp-config.php file are incorrect, or that the Redis server is not reachable.

Is the correct Redis host and port set?
Is the Redis server running?
If you need help, please read the installation instructions.

To disable Redis, delete the object-cache.php file in the /wp-content/ directory.

This message was triggered by woocommerce.

Call stack:

wp_die()
wp-content/object-cache.php:2947
WP_Object_Cache->show_error_and_die()
wp-content/object-cache.php:2879
WP_Object_Cache->handle_exception()
wp-content/object-cache.php:2164
WP_Object_Cache->set()
wp-content/object-cache.php:294
wp_cache_set()
wp-includes/option.php:990
set_transient('shipping-transient-version')
wp-content/plugins/woocommerce/includes/class-wc-cache-helper.php:225
WC_Cache_Helper::get_transient_version()
wp-content/plugins/b2bking/public/class-b2bking-public.php:780
B2bking_Public->{closure}()
wp-includes/class-wp-hook.php:310
do_action('plugins_loaded')
wp-settings.php:495

When I move pages from pages, sometimes it happens. after the error page, I refresh the page, and it works well again

Status: Connected
Client: PhpRedis (v5.3.7)
Drop-in: Valid
Disabled: No
Ping: 1
Errors: []
PhpRedis: 5.3.7
Relay: Not loaded
Predis: 2.1.2
Credis: Not loaded
PHP Version: 8.1.22
Plugin Version: 2.4.4
Redis Version: 6.0.16
Multisite: No
Metrics: Enabled
Metrics recorded: 15
Filesystem: Working
Global Prefix: "wp_"
Blog Prefix: "wp_"
WP_REDIS_CLIENT: "phpredis"
WP_REDIS_SERVERS: [
"tcp://10.34.112.4:26379",
"tcp://10.34.112.5:26379"
]
WP_REDIS_SENTINEL: "mymaster"
WP_REDIS_PREFIX: "bTz$:r0K9Ok}ixW;2f=}@eDPigxQ-{M56:fYSEKaY3kH5+D=$~QBh$#P CEh}E6)"
WP_CACHE_KEY_SALT: "bTz$:r0K9Ok}ixW;2f=}@eDPigxQ-{M56:fYSEKaY3kH5+D=$~QBh$#P CEh}E6)"
WP_REDIS_PLUGIN_PATH: "/var/www/html/wp-content/plugins/redis-cache"
WP_REDIS_PASSWORD: ••••••••
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",
"blog_meta",
"network-queries",
"site-queries",
"user-queries"
]
Ignored Groups: [
"counts",
"plugins",
"themes",
"theme_json"
]
Unflushable Groups: []
Groups Types: {
"blog-details": "global",
"blog-id-cache": "global",
"blog-lookup": "global",
"global-posts": "global",
"networks": "global",
"rss": "global",
"sites": "global",
"site-details": "global",
"site-lookup": "global",
"site-options": "global",
"site-transient": "global",
"users": "global",
"useremail": "global",
"userlogins": "global",
"usermeta": "global",
"user_meta": "global",
"userslugs": "global",
"redis-cache": "global",
"counts": "ignored",
"plugins": "ignored",
"themes": "ignored",
"blog_meta": "global",
"network-queries": "global",
"site-queries": "global",
"user-queries": "global",
"theme_json": "ignored"
}
Drop-ins: [
"Query Monitor Database Class (Drop-in) v3.12.3 by John Blackbourn",
"Redis Object Cache Drop-In v2.4.4 by Till Krüss"
]

Please help me

• This topic was modified 3 weeks, 6 days ago by auxschwarz.