redis 2.6 memory_utilization data is missing

[supergrilo]

Hello! :)

dpkg -l |grep redis

ii libredis-perl 2:1.9510-2 all persistent key-value database with network interface (Perl client library)
ii redis-server 2:2.6.15-1 amd64 Persistent key-value database with network interface

./check_redis.pl -H localhost -m88,90 -M2048M -v
Processing memory utilization thresholds: 88,90
check_redis.pl plugin version 0.73
Alarm at 15
connecting to localhost:6379
[SEND] PING $VAR1 = [];
[SEND RAW] *1
$4
PING
[RECV RAW] '+PONG' at /usr/share/perl5/Redis.pm line 522, chunk 1.
[RECV] PING $VAR1 = 'PONG';
$VAR2 = undef;
[SEND] INFO $VAR1 = [];
[SEND RAW] *1
$4
INFO
[RECV RAW] '$1660' at /usr/share/perl5/Redis.pm line 522, chunk 2.
[RECV RAW] '# Server
redis_version:2.6.15
redis_git_sha1:00000000
redis_git_dirty:0
redis_mode:standalone
os:Linux 3.2.0-4-amd64 x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.7.2
process_id:31623
run_id:8a72e1fb0f2337acaac81cf21eb560931e9f72c3
tcp_port:6379
uptime_in_seconds:1346
uptime_in_days:0
hz:10
lru_clock:1405428

Clients

connected_clients:2
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0

Memory

used_memory:1625944
used_memory_human:1.55M
used_memory_rss:3092480
used_memory_peak:1703840
used_memory_peak_human:1.62M
used_memory_lua:31744
mem_fragmentation_ratio:1.90
mem_allocator:jemalloc-3.0.0

Persistence

loading:0
rdb_changes_since_last_save:1141
rdb_bgsave_in_progress:0
rdb_last_save_time:1377201742
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok

Stats

total_connections_received:63
total_commands_processed:2018
instantaneous_ops_per_sec:0
rejected_connections:0
expired_keys:0
evicted_keys:0
keyspace_hits:493
keyspace_misses:166
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0

Replication

role:slave
master_host:192.168.1.62
master_port:6379
master_link_status:up
master_last_io_seconds_ago:8
master_sync_in_progress:0
slave_priority:100
slave_read_only:1
connected_slaves:0

CPU

used_cpu_sys:0.60
used_cpu_user:0.08
used_cpu_sys_children:0.00
used_cpu_user_children:0.00

Keyspace

db0:keys=329,expires=329,avg_ttl=0
' at /usr/share/perl5/Redis.pm line 545, chunk 2.
[RECV] INFO $VAR1 = '# Server
redis_version:2.6.15
redis_git_sha1:00000000
redis_git_dirty:0
redis_mode:standalone
os:Linux 3.2.0-4-amd64 x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.7.2
process_id:31623
run_id:8a72e1fb0f2337acaac81cf21eb560931e9f72c3
tcp_port:6379
uptime_in_seconds:1346
uptime_in_days:0
hz:10
lru_clock:1405428

Clients

connected_clients:2
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0

Memory

used_memory:1625944
used_memory_human:1.55M
used_memory_rss:3092480
used_memory_peak:1703840
used_memory_peak_human:1.62M
used_memory_lua:31744
mem_fragmentation_ratio:1.90
mem_allocator:jemalloc-3.0.0

Persistence

loading:0
rdb_changes_since_last_save:1141
rdb_bgsave_in_progress:0
rdb_last_save_time:1377201742
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok

Stats

total_connections_received:63
total_commands_processed:2018
instantaneous_ops_per_sec:0
rejected_connections:0
expired_keys:0
evicted_keys:0
keyspace_hits:493
keyspace_misses:166
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0

Replication

role:slave
master_host:192.168.1.62
master_port:6379
master_link_status:up
master_last_io_seconds_ago:8
master_sync_in_progress:0
slave_priority:100
slave_read_only:1
connected_slaves:0

CPU

used_cpu_sys:0.60
used_cpu_user:0.08
used_cpu_sys_children:0.00
used_cpu_user_children:0.00

Keyspace

db0:keys=329,expires=329,avg_ttl=0
';
$VAR2 = undef;
[SEND] QUIT $VAR1 = [];
[SEND RAW] *1
$4
QUIT
Stats Line: slave_priority = 100
Stats Line: 63 = total_commands_processed
Stats Line: Linux 3.2.0-4-amd64 x86_64 = arch_bits
Stats Line: 1346 = uptime_in_days
Stats Line: 1.90 = mem_allocator
Stats Line: 1703840 = used_memory_peak_human
Stats Line: 166 = pubsub_channels
Stats Line: 8a72e1fb0f2337acaac81cf21eb560931e9f72c3 = tcp_port
Stats Line: master_link_status = up
Stats Line: 1.55M = used_memory_rss
Stats Line: loading = 0
Stats Line: 1625944 = used_memory_human
Stats Line: # Stats = total_connections_received
Stats Line: rdb_last_bgsave_time_sec = -1
Stats Line: connected_clients = 2
Stats Line: 0.60 = used_cpu_user
Stats Line: 31744 = mem_fragmentation_ratio
Stats Line: 1405428 = # Clients
Stats Line: rdb_last_bgsave_status = ok
Stats Line: master_host = 192.168.1.62
Stats Line: 1.62M = used_memory_lua
Stats Line: client_biggest_input_buf = 0
Stats Line: aof_rewrite_scheduled = 0
Stats Line: master_last_io_seconds_ago = 8
Stats Line: rdb_last_save_time = 1377201742
Stats Line: standalone = os
Stats Line: 10 = lru_clock
Stats Line: role = slave
Stats Line: rdb_changes_since_last_save = 1141
Stats Line: db0 = keys=329,expires=329,avg_ttl=0

• stats data added: db0_keys = 329
• stats data added: db0_expires = 329
• stats data added: db0_avg_ttl = 0
  Stats Line: rdb_bgsave_in_progress = 0
  Stats Line: 2.6.15 = redis_git_sha1
  Stats Line: 00000000 = redis_git_dirty
  Stats Line: # Memory = used_memory
  Stats Line: 2018 = instantaneous_ops_per_sec
  Stats Line: master_sync_in_progress = 0
  Stats Line: aof_last_rewrite_time_sec = -1
  Stats Line: jemalloc-3.0.0 = # Persistence
  Stats Line: aof_current_rewrite_time_sec = -1
  Stats Line: 0 = # Replication
  Stats Line: # Server = redis_version
  Stats Line: 0.08 = used_cpu_sys_children
  Stats Line: rdb_current_bgsave_time_sec = -1
  Stats Line: epoll = gcc_version
  Stats Line: 3092480 = used_memory_peak
  Stats Line: client_longest_output_list = 0
  Stats Line: aof_enabled = 0
  Stats Line: 4.7.2 = process_id
  Stats Line: 64 = multiplexing_api
  Stats Line: blocked_clients = 0
  Stats Line: 6379 = uptime_in_seconds
  Stats Line: # CPU = used_cpu_sys
  Stats Line: 31623 = run_id
  Stats Line: aof_last_bgrewrite_status = ok
  Stats Line: aof_rewrite_in_progress = 0
  Stats Line: slave_read_only = 1
  Stats Line: 493 = keyspace_misses
  Stats Line: 0.00 = # Keyspace
  Stats Line: connected_slaves = 0
  Stats Line: master_port = 6379
  Calculated Data: total_keys=329
  Calculated Data: total_expires=329
  CRITICAL: memory_utilization data is missing - REDIS on localhost:6379 has 1 databases (db0) with 329 keys

[willixix]

This is not an issue with the plugin but with your redis perl library that has not been updated to properly support 2.6. This is the same problem discussed in: willixix/WL-NagiosPlugins#16

[ynezz]

Hi,

I was bitten by this issue also and spent some time on it. Maybe it would be more userfriendly to detect this corner case and show some warning instead of an error message which is wrong, missleading and doesn't help at all? :-)

Indeed, installing new version of Redis Perl library fixed it. Thanks.

Petr