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ledgetech / lua-resty-redis-connector

Connection utilities for lua-resty-redis
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sentinel.get_master method #27

Open AlexProfi opened 5 years ago

AlexProfi commented 5 years ago

Please describe how to use method sentinel.get_master method after I get connected redis after connect_via_sentinel

majulong commented 5 years ago

the same issue, I dont know how to use that method. @AlexProfi have you get the solution?

hamishforbes commented 5 years ago

You're generally better off using the role param when calling connect_via_sentinel. The get_master and get_slaves methods are used internally by connect_via_sentinel. https://github.com/ledgetech/lua-resty-redis-connector/blob/master/lib/resty/redis/connector.lua#L237

If you do want to use them directly the first argument is an instance of resty-redis already connected to a sentinel and the second arg is the master name configuration in sentinel. e.g. something like this (untested code)

local sentinel = require("resty.redis").new()
sentinel:connect("my_sentinel.host", 6380)

local master = require("resty.redis.sentinel").get_master(sentinel, "my_master_name")
majulong commented 5 years ago

@AlexProfi can I use the method in stream that load balance the redis, when the redis master down and pick a new one immediately.

majulong commented 5 years ago

@hamishforbes

hamishforbes commented 5 years ago

I don't really understand.

If you use the sentinel syntax (https://github.com/ledgetech/lua-resty-redis-connector#connections-via-redis-sentinel) then it will always ask sentinel for the current master and then make a connection to that host.