# Redis Input Plugin This plugin gathers metrics from [Redis][redis] servers. ⭐ Telegraf v0.1.1 🏷️ server 💻 all [redis]: https://redis.io/ ## Global configuration options Plugins support additional global and plugin configuration settings for tasks such as modifying metrics, tags, and fields, creating aliases, and configuring plugin ordering. See [CONFIGURATION.md][CONFIGURATION.md] for more details. [CONFIGURATION.md]: ../../../docs/CONFIGURATION.md#plugins ## Configuration ```toml @sample.conf # Read metrics from one or many redis servers [[inputs.redis]] ## specify servers via a url matching: ## [protocol://][username:password]@address[:port] ## e.g. ## tcp://localhost:6379 ## tcp://username:password@192.168.99.100 ## unix:///var/run/redis.sock ## ## If no servers are specified, then localhost is used as the host. ## If no port is specified, 6379 is used servers = ["tcp://localhost:6379"] ## Optional. Specify redis commands to retrieve values # [[inputs.redis.commands]] # # The command to run where each argument is a separate element # command = ["get", "sample-key"] # # The field to store the result in # field = "sample-key-value" # # The type of the result # # Can be "string", "integer", or "float" # type = "string" ## Specify username and password for ACL auth (Redis 6.0+). You can add this ## to the server URI above or specify it here. The values here take ## precedence. # username = "" # password = "" ## Optional TLS Config ## Check tls/config.go ClientConfig for more options # tls_enable = true # tls_ca = "/etc/telegraf/ca.pem" # tls_cert = "/etc/telegraf/cert.pem" # tls_key = "/etc/telegraf/key.pem" ## Use TLS but skip chain & host verification # insecure_skip_verify = true ``` ## Metrics The plugin gathers the results of the [INFO](https://redis.io/commands/info) redis command. There are two separate measurements: _redis_ and _redis\_keyspace_, the latter is used for gathering database related statistics. Additionally the plugin also calculates the hit/miss ratio (keyspace\_hitrate) and the elapsed time since the last rdb save (rdb\_last\_save\_time\_elapsed). - redis - keyspace_hitrate(float, number) - rdb_last_save_time_elapsed(int, seconds) **Server** - uptime(int, seconds) - lru_clock(int, number) - redis_version(string) **Clients** - clients(int, number) - client_longest_output_list(int, number) - client_biggest_input_buf(int, number) - blocked_clients(int, number) **Memory** - used_memory(int, bytes) - used_memory_rss(int, bytes) - used_memory_peak(int, bytes) - total_system_memory(int, bytes) - used_memory_lua(int, bytes) - maxmemory(int, bytes) - maxmemory_policy(string) - mem_fragmentation_ratio(float, number) **Persistence** - loading(int,flag) - rdb_changes_since_last_save(int, number) - rdb_bgsave_in_progress(int, flag) - rdb_last_save_time(int, seconds) - rdb_last_bgsave_status(string) - rdb_last_bgsave_time_sec(int, seconds) - rdb_current_bgsave_time_sec(int, seconds) - aof_enabled(int, flag) - aof_rewrite_in_progress(int, flag) - aof_rewrite_scheduled(int, flag) - aof_last_rewrite_time_sec(int, seconds) - aof_current_rewrite_time_sec(int, seconds) - aof_last_bgrewrite_status(string) - aof_last_write_status(string) **Stats** - total_connections_received(int, number) - total_commands_processed(int, number) - instantaneous_ops_per_sec(int, number) - total_net_input_bytes(int, bytes) - total_net_output_bytes(int, bytes) - instantaneous_input_kbps(float, KB/sec) - instantaneous_output_kbps(float, KB/sec) - rejected_connections(int, number) - sync_full(int, number) - sync_partial_ok(int, number) - sync_partial_err(int, number) - expired_keys(int, number) - evicted_keys(int, number) - keyspace_hits(int, number) - keyspace_misses(int, number) - pubsub_channels(int, number) - pubsub_patterns(int, number) - latest_fork_usec(int, microseconds) - migrate_cached_sockets(int, number) **Replication** - connected_slaves(int, number) - master_link_down_since_seconds(int, number) - master_link_status(string) - master_repl_offset(int, number) - second_repl_offset(int, number) - repl_backlog_active(int, number) - repl_backlog_size(int, bytes) - repl_backlog_first_byte_offset(int, number) - repl_backlog_histlen(int, bytes) **CPU** - used_cpu_sys(float, number) - used_cpu_user(float, number) - used_cpu_sys_children(float, number) - used_cpu_user_children(float, number) **Cluster** - cluster_enabled(int, flag) - redis_keyspace - keys(int, number) - expires(int, number) - avg_ttl(int, number) - redis_cmdstat Every Redis used command could have the following fields: - calls(int, number) - failed_calls(int, number) - rejected_calls(int, number) - usec(int, mircoseconds) - usec_per_call(float, microseconds) - redis_latency_percentiles_usec - fields: - p50(float, microseconds) - p99(float, microseconds) - p99.9(float, microseconds) - redis_replication - tags: - replication_role - replica_ip - replica_port - state (either "online", "wait_bgsave", or "send_bulk") - fields: - lag(int, number) - offset(int, number) - redis_errorstat - tags: - err - fields: - total (int, number) All measurements have the following tags: - port - server - replication_role The `redis_keyspace` measurement has an additional `database` tag. The `redis_cmdstat` and `redis_latency_percentiles_usec` measurements have an additional `command` tag. ## Example Output The following configuration ```toml [[inputs.redis]] ## specify servers via a url matching: ## [protocol://][:password]@address[:port] ## e.g. ## tcp://localhost:6379 ## tcp://:password@192.168.99.100 ## ## If no servers are specified, then localhost is used as the host. ## If no port is specified, 6379 is used servers = ["tcp://localhost:6379"] ``` produces these metrics: ```text redis,server=localhost,port=6379,replication_role=master,host=host keyspace_hitrate=1,clients=2i,blocked_clients=0i,instantaneous_input_kbps=0,sync_full=0i,pubsub_channels=0i,pubsub_patterns=0i,total_net_output_bytes=6659253i,used_memory=842448i,total_system_memory=8351916032i,aof_current_rewrite_time_sec=-1i,rdb_changes_since_last_save=0i,sync_partial_err=0i,latest_fork_usec=508i,instantaneous_output_kbps=0,expired_keys=0i,used_memory_peak=843416i,aof_rewrite_in_progress=0i,aof_last_bgrewrite_status="ok",migrate_cached_sockets=0i,connected_slaves=0i,maxmemory_policy="noeviction",aof_rewrite_scheduled=0i,total_net_input_bytes=3125i,used_memory_rss=9564160i,repl_backlog_histlen=0i,rdb_last_bgsave_status="ok",aof_last_rewrite_time_sec=-1i,keyspace_misses=0i,client_biggest_input_buf=5i,used_cpu_user=1.33,maxmemory=0i,rdb_current_bgsave_time_sec=-1i,total_commands_processed=271i,repl_backlog_size=1048576i,used_cpu_sys=3,uptime=2822i,lru_clock=16706281i,used_memory_lua=37888i,rejected_connections=0i,sync_partial_ok=0i,evicted_keys=0i,rdb_last_save_time_elapsed=1922i,rdb_last_save_time=1493099368i,instantaneous_ops_per_sec=0i,used_cpu_user_children=0,client_longest_output_list=0i,master_repl_offset=0i,repl_backlog_active=0i,keyspace_hits=2i,used_cpu_sys_children=0,cluster_enabled=0i,rdb_last_bgsave_time_sec=0i,aof_last_write_status="ok",total_connections_received=263i,aof_enabled=0i,repl_backlog_first_byte_offset=0i,mem_fragmentation_ratio=11.35,loading=0i,rdb_bgsave_in_progress=0i 1493101290000000000 redis_keyspace,database=db1,host=host,server=localhost,port=6379,replication_role=master keys=1i,expires=0i,avg_ttl=0i 1493101350000000000 redis_cmdstat,command=publish,host=host,port=6379,replication_role=master,server=localhost calls=569514i,failed_calls=0i,rejected_calls=0i,usec=9916334i,usec_per_call=17.41 1559227136000000000 redis_latency_percentiles_usec,command=zadd,host=host,port=6379,replication_role=master,server=localhost p50=9.023,p99=28.031,p99.9=43.007 1559227136000000000 redis_errorstat,err=MOVED,host=host,port=6379,replication_role=master,server=localhost total=4284 1691119309000000000 ```