vayne_metric_redis

Redis metric plugin for vayne_core monitor framework. Checkout real monitor example to see vayne_server.

Installation

Add package to your list of dependencies in mix.exs:

def deps do
  [
    {:vayne_metric_redis, github: "mon-suit/vayne_metric_redis"}
  ]
end

Usage

#Setup params for plugin.
params = %{"host" => "127.0.0.1", "password" => "foo"}

#Init plugin.
{:ok, stat} = Vayne.Metric.Redis.init(params)

#In fact, log_func will be passed by framework to record error.
log_func = fn msg -> IO.puts msg end

#Run plugin and get returned metrics.
{:ok, metrics} = Vayne.Metric.Redis.run(stat, log_func)

#Do with metrics
IO.inspect metrics

#Clean plugin state.
:ok = Vayne.Metric.Redis.clean(stat)

Support params:

• host: Redis host.Required.
• port: Redis port. Not required, default 6379.
• password: password. Not required.
• max_memory: max_memory. Not required(CONFIG GET will failed in some cloud instance).

Support Metrics

1. All info items(could be parsed to number).
2. Custom items:

• is_slave: "slave" -> 1, other -> 0. (check if failover happen)
• master_link_status: nil -> 2, "up" -> 1, other -> 0
• used_memory_percent: 100 * used_memory / max_memory
• keys: count of keys in db0~db15
• key_hits_percent: 100 * keyspace_hits / (keyspace_hits + keyspace_misses)
• aof_last_bgrewrite_status and rdb_last_bgsave_status: "ok" -> 1, other -> 0
• cluster_state: "ok" -> 1, other -> 0. (when cluster_enabled == 1)