redis

README

Redis metrics for monitoring.

We do not parse values in int or float* type and keep them original, end-user should take care type by itself. For example, Open-falcon will parses all values into JSON float64 finally.

Metrics

Following metrics get from redis issue command info output.

Section clients

KEY	TYPE	NOTES
connected_clients	GUAGE
client_longest_output_list	GUAGE
client_biggest_input_buf	GUAGE
blocked_clients	GUAGE

Section memory

KEY	TYPE	NOTES
used_memory	GAUGE
used_memory_rss	GAUGE
used_memory_peak	GAUGE
used_memory_lua	GAUGE
mem_fragmentation_ratio	GAUGE	in percent

Section Persistence

KEY	TYPE	NOTES
loading	GUAGE
rdb_changes_since_last_save	GUAGE
rdb_bgsave_in_progress	GUAGE
rdb_last_save_time	GUAGE
rdb_last_bgsave_time_sec	GUAGE
rdb_current_bgsave_time_sec	GUAGE
aof_enabled	GUAGE
aof_rewrite_in_progress	GUAGE
aof_rewrite_scheduled	GUAGE
aof_last_rewrite_time_sec	GUAGE
aof_current_rewrite_time_sec	GUAGE

Section Stats

KEY	TYPE	NOTES
total_connections_received	GUAGE
total_commands_processed	GUAGE
instantaneous_ops_per_sec	GUAGE
total_net_input_bytes	GUAGE
total_net_output_bytes	GUAGE
instantaneous_input_kbps	GUAGE
instantaneous_output_kbps	GUAGE
rejected_connections	GUAGE
sync_full	GUAGE
sync_partial_ok	GUAGE
sync_partial_err	GUAGE
expired_keys	GUAGE
evicted_keys	GUAGE
keyspace_hits	GUAGE
keyspace_misses	GUAGE
pubsub_channels	GUAGE
pubsub_patterns	GUAGE
latest_fork_usec	GUAGE
migrate_cached_sockets	GUAGE

Section Replication

KEY	TYPE	NOTES
connected_slaves	GUAGE
master_repl_offset	GUAGE
repl_backlog_active	GUAGE
repl_backlog_size	GUAGE
repl_backlog_first_byte_offset	GUAGE
repl_backlog_histlen	GUAGE

Section CPU

KEY	TYPE	NOTES
used_cpu_sys	GUAGE
used_cpu_user	GUAGE
used_cpu_sys_children	GUAGE
used_cpu_user_children	GUAGE

Section Cluster

KEY	TYPE	NOTES
cluster_enabled	GUAGE

Section Keyspace

All keys will transform into following formats

"db0:keys=1,expires=0,avg_ttl=0" => "db*_keys" "db*_expires" "db*_avg_ttl"

KEY	TYPE	NOTES
db0_keys	GAUGE
db0_expires	GAUGE
db0_avg_ttl	GAUGE

Extra Metrics

KEY	TYPE	NOTES
ping	GAUGE	1 for up, 0 for down, -1 for unknown
cfg_maxmemory	GAUGE	get from config get maxmemory
hit_rate	GAUGE	keyspace_hits / (keyspace_hits + keyspace_misses) * 100
used_memory_rate	GAUGE	0 if cfg_maxmemory=0, or used_memory/cfg_maxmemory*100

Build

Build example

go get -v github.com/OpenCCTV/redis
cd $GOPATH/src/github.com/OpenCCTV/redis/examples/json.redis
go build -o json.redis.bin

Start it

./json.redis.bin -addr 127.0.0.1:6379

For more detail, see source code.