[memcached]: unexpected line in stats response: "STAT version 1.4.14 (Ubuntu)"

[bbigras]

2015/08/25 11:24:45 Error in plugin [memcached]: unexpected line in stats response: "STAT version 1.4.14 (Ubuntu)"

telegraf v0.1.6
influxdb v0.9.3-rc2
memcached 1.4.14

[sparrc]

@BrunoQC

I haven't been able to reproduce this issue, can you please startup memcached in verbose mode memcached -vvv -d and send me the full output of your telegraf command like so:

vagrant@vagrant-ubuntu-trusty-64:~$ memcached -vvv -d
[...]
vagrant@vagrant-ubuntu-trusty-64:~$ /opt/telegraf/telegraf -config /tmp/tele.toml -filter memcached -test -debug
plugin [memcached] is enabled (filter options)
* Plugin: memcached
<30 new auto-negotiating client connection
30: going from conn_new_cmd to conn_waiting
30: going from conn_waiting to conn_read
30: going from conn_read to conn_parse_cmd
30: Client using the ascii protocol
<30 stats
30: going from conn_parse_cmd to conn_write
30: going from conn_write to conn_new_cmd
30: going from conn_new_cmd to conn_waiting
30: going from conn_waiting to conn_read
> [server="localhost:11211"] memcached_get_hits value=0
> [server="localhost:11211"] memcached_get_misses value=0
> [server="localhost:11211"] memcached_evictions value=0
> [server="localhost:11211"] memcached_limit_maxbytes value=67108864
> [server="localhost:11211"] memcached_bytes value=0
30: going from conn_read to conn_closing
<30 connection closed.

Also please send your memcached configuration, mine is just the standard:

# Read metrics from one or many memcached servers
[memcached]

# An array of address to gather stats about. Specify an ip on hostname
# with optional port. ie localhost, 10.0.0.1:11211, etc.
#
# If no servers are specified, then localhost is used as the host.
servers = ["localhost"]

[bbigras]

<30 new auto-negotiating client connection
30: going from conn_new_cmd to conn_waiting
30: going from conn_waiting to conn_read
30: going from conn_read to conn_parse_cmd
30: Client using the ascii protocol
<30 stats
30: going from conn_parse_cmd to conn_write
30: going from conn_write to conn_new_cmd
30: going from conn_new_cmd to conn_waiting
30: going from conn_waiting to conn_read
30: going from conn_read to conn_closing
<30 connection closed.

bbigras@ubuntunew:~/.GOPATH/bin$ ./telegraf -config telegraf.toml -filter memcached -test -debug
plugin [memcached] is enabled (filter options)
* Plugin: memcached
2015/08/25 13:43:14 unexpected line in stats response: "STAT version 1.4.14 (Ubuntu)"

# Read metrics from one or many memcached servers
[memcached]

# An array of address to gather stats about. Specify an ip on hostname
# with optional port. ie localhost, 10.0.0.1:11211, etc.
#
# If no servers are specified, then localhost is used as the host.
servers = ["localhost"]

[bbigras]

I think it's because STAT %s %s\r\n doesn't match STAT version 1.4.14 (Ubuntu) on
https://github.com/influxdb/telegraf/blob/bd85a36cb1e88450bea2792e989fa8074b5798a4/plugins/memcached/memcached.go#L104

errScan's value is newline in format does not match input

[bbigras]

I'll submit a pull request soon.