zabbix discovery doesn't work.

[sharewax]

Is it normal, that you have discovery function for db, but it has been never used?

grep DBNAME -R .
./zbx_redis_templates.xml:                    <filter>{#DBNAME}:</filter>
./zbx_redis_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_expires, {#DBNAME}]</key>
./zbx_redis_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_keys, {#DBNAME}]</key>
./zbx_redis_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_avg_ttl, {#DBNAME}]</key>
./zbx_redis_trapper_templates.xml:                    <filter>{#DBNAME}:</filter>
./zbx_redis_trapper_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_avg_ttl, {#DBNAME}]</key>
./zbx_redis_trapper_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_keys, {#DBNAME}]</key>
./zbx_redis_trapper_templates.xml:                            <key>redis[{HOSTNAME}, key_space_db_expires, {#DBNAME}]</key>

[rubal033]

Any updates or workaround for this? How to discover the Redis db?

[timwelch]

I have a fix on my working copy of the script for my own use by adding a new function for discovery. So in the python script, add this new function above list_key_space_db:

def list_all_dbs_with_keys():
   d = {'data': []}
   for key in server_info.keys():
      if key.startswith( 'db' ):
         d['data'].append({'{#DBNAME}': key})
   print json.dumps(d)

def list_key_space_db():
   if args.db in server_info:
      print(args.db)
   else:
      print('database_detect')

Making sure to add list_all_dbs_with_keys as a command line argument option:

            {
                'llen': llen,
                'llenall': llensum,
                'list_all_dbs_with_keys': list_all_dbs_with_keys,
                'list_key_space_db': list_key_space_db,
            }.get(args.metric, default)()

And then in the zabbix_agent.d/zbx_redis.conf file change the line to read:

UserParameter=redis.discovery,/etc/zabbix/externalscripts/zbx_redis_stats.py localhost list_all_dbs_with_keys

I also created a graph prototype with the 3 auto discover values in my template. You can if you want.

Below is the output when I run the command, and zabbix happily discovers all of my DBs now.

[root@testredis externalscripts]# /etc/zabbix/externalscripts/zbx_redis_stats.py localhost list_all_dbs_with_keys
{"data": [{"{#DBNAME}": "db2"}, {"{#DBNAME}": "db1"}, {"{#DBNAME}": "db0"}]}

[darksmoke]

good afternoon
Zabbix does not automatically detect the database, writes:
Redis dscovery db Value should be a JSON object.

I do:
/opt/zabbix/externalscripts/zbx_redis_stats.py localhost list_all_dbs_with_case
But nothing comes in reply. It's empty.
How to fix it?

redis_version:2.6.17