redis

package

v0.54.1 Latest Latest Go to latest Published: Aug 1, 2023 License: GPL-3.0 Imports: 15 Imported by: 1

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/netdata/go.d.plugin

Links

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README ¶

Redis collector

Overview

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker.

This collector monitors one or more Redis instances, depending on your configuration.

It collects information and statistics about the server executing the following commands:

INFO ALL

Collected metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

global

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

Metric	Dimensions	Unit
redis.connections	accepted, rejected	connections/s
redis.clients	connected, blocked, tracking, in_timeout_table	clients
redis.ping_latency	min, max, avg	seconds
redis.commands	processes	commands/s
redis.keyspace_lookup_hit_rate	lookup_hit_rate	percentage
redis.memory	max, used, rss, peak, dataset, lua, scripts	bytes
redis.mem_fragmentation_ratio	mem_fragmentation	ratio
redis.key_eviction_events	evicted	keys/s
redis.net	received, sent	kilobits/s
redis.rdb_changes	changes	operations
redis.bgsave_now	current_bgsave_time	seconds
redis.bgsave_health	last_bgsave	status
redis.bgsave_last_rdb_save_since_time	last_bgsave_time	seconds
redis.aof_file_size	current, base	bytes
redis.commands_calls	a dimension per command	calls
redis.commands_usec	a dimension per command	microseconds
redis.commands_usec_per_sec	a dimension per command	microseconds/s
redis.key_expiration_events	expired	keys/s
redis.database_keys	a dimension per database	keys
redis.database_expires_keys	a dimension per database	keys
redis.connected_replicas	connected	replicas
redis.master_link_status	up, down	status
redis.master_last_io_since_time	time	seconds
redis.master_link_down_since_time	time	seconds
redis.uptime	uptime	seconds

Setup

Prerequisites

No action required.

Configuration

File

The configuration file name is go.d/redis.conf.

The file format is YAML. Generally, the format is:

update_every: 1
autodetection_retry: 0
jobs:
  - name: some_name1
  - name: some_name1

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/redis.conf

Options

The following options can be defined globally: update_every, autodetection_retry.

Config options

Name	Description	Default	Required
update_every	Data collection frequency.	5
autodetection_retry	Re-check interval in seconds. Zero means not to schedule re-check.	0
address	Redis server address.	redis://@localhost:6379	yes
timeout	Dial (establishing new connections), read (socket reads) and write (socket writes) timeout in seconds.	1
username	Username used for authentication.
password	Password used for authentication.
tls_skip_verify	Server certificate chain and hostname validation policy. Controls whether the client performs this check.	no
tls_ca	Certificate authority that client use when verifying server certificates.
tls_cert	Client tls certificate.
tls_key	Client tls key.

address

There are two connection types: by tcp socket and by unix socket.

Tcp connection: redis://<user>:<password>@<host>:<port>/<db_number>
Unix connection: unix://<user>:<password>@</path/to/redis.sock>?db=<db_number>

Examples

TCP socket

An example configuration.

Config

jobs:
  - name: local
    address: 'redis://@127.0.0.1:6379'

Unix socket

An example configuration.

Config

jobs:
  - name: local
    address: 'unix://@/tmp/redis.sock'

TCP socket with password

An example configuration.

Config

jobs:
  - name: local
    address: 'redis://:password@127.0.0.1:6379'

Multi-instance

Note: When you define multiple jobs, their names must be unique.

Local and remote instances.

Config

jobs:
  - name: local
    address: 'redis://:password@127.0.0.1:6379'

  - name: remote
    address: 'redis://user:password@203.0.113.0:6379'

Troubleshooting

Debug mode

To troubleshoot issues with the redis collector, run the go.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

Navigate to the plugins.d directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the plugins setting under [directories].
```
cd /usr/libexec/netdata/plugins.d/
```
Switch to the netdata user.
```
sudo -u netdata -s
```
Run the go.d.plugin to debug the collector:
```
./go.d.plugin -d -m redis
```

Documentation ¶

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Config ¶

type Config struct {
	Address          string       `yaml:"address"`
	Password         string       `yaml:"password"`
	Username         string       `yaml:"username"`
	Timeout          web.Duration `yaml:"timeout"`
	PingSamples      int          `yaml:"ping_samples"`
	tlscfg.TLSConfig `yaml:",inline"`
}

type Redis ¶

type Redis struct {
	module.Base
	Config `yaml:",inline"`
	// contains filtered or unexported fields
}

func New ¶

func New() *Redis

func (*Redis) Charts ¶

func (r *Redis) Charts() *module.Charts

func (*Redis) Check ¶

func (r *Redis) Check() bool

func (*Redis) Cleanup ¶

func (r *Redis) Cleanup()

func (*Redis) Collect ¶

func (r *Redis) Collect() map[string]int64

func (*Redis) Init ¶

func (r *Redis) Init() bool

Source Files ¶

View all Source files

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