Re: [gentoo-user] strange TCP timeout errors

[Grant <emailgrant@gmail.com>]

>>>>> I've attached a PNG from Munin showing the TCP timeout errors on my
>>>>> Gentoo server over the past month.  The data is expressed in timeouts
>>>>> per second and that rate is shown to be steadily increasing over the
>>>>> past month.  That seems strange to me.  Munin doesn't show any other
>>>>> data point increasing like this over the time period.  Any ideas?
>>>>>
>>>>> - Grant
>>>>>
>>>>
>>>> weird - does it reset on an interface restart or reboot?
>>>
>>> this would be my test #1
>>
>>
>> I rebooted and the rate of errors has dropped off to almost nothing.
>>
>>
>>>> Can you verify its not an artefact within munin (how?)
>>>
>>> In theory, a misconfigured graph can do this. Munin can draw many
>>> different types of graph, including cumulative values. Even for a data
>>> type like this which is X events per unit time, if you tell munin to add
>>> them all up, it will do so and graph it.
>>>
>>> Qucik test is to look at the graph config.
>>
>>
>> This graph lives in the "network" section of the munin web interface.
>> There is no matching section in /etc/munin/plugin-conf.d/munin-node so
>> it should be be using the default config.
>>
>> Any ideas based on this new info?
>
> A few :-)
>
>
> I can't find the plugin that delivers that graph though. Maybe I just
> don't have it, maybe it comes from contrib/
>
> What's your USE for munin?


USE="apache cgi http mysql ssl syslog -asterisk -dhcpd -doc -ipmi
-ipv6 -irc -java -memcached -minimal -postgres (-selinux) {-test}"


> What do you have in "ls -al /etc/munin/plugins/"  ?


# ls -al /etc/munin/plugins/
total 8
drwxr-xr-x 2 munin munin 4096 Aug 26 13:22 .
drwxr-xr-x 7 root  root  4096 Aug 27 08:42 ..
-rw-r--r-- 1 root  root     0 Aug 23 18:10 .keep_net-analyzer_munin-0
lrwxrwxrwx 1 root  root    42 Jun 16  2013 apache_accesses ->
/usr/libexec/munin/plugins/apache_accesses
lrwxrwxrwx 1 root  root    43 Jun 16  2013 apache_processes ->
/usr/libexec/munin/plugins/apache_processes
lrwxrwxrwx 1 root  root    40 Jun 16  2013 apache_volume ->
/usr/libexec/munin/plugins/apache_volume
lrwxrwxrwx 1 root  root    30 Jun 16  2013 cpu -> /usr/libexec/munin/plugins/cpu
lrwxrwxrwx 1 root  root    29 Jun 16  2013 df -> /usr/libexec/munin/plugins/df
lrwxrwxrwx 1 root  root    35 Jun 16  2013 df_inode ->
/usr/libexec/munin/plugins/df_inode
lrwxrwxrwx 1 root  root    36 Jun 21  2013 diskstat_ ->
/usr/libexec/munin/plugins/diskstat_
lrwxrwxrwx 1 root  root    36 Jun 16  2013 diskstats ->
/usr/libexec/munin/plugins/diskstats
lrwxrwxrwx 1 root  root    34 Jun 16  2013 entropy ->
/usr/libexec/munin/plugins/entropy
lrwxrwxrwx 1 root  root    32 Jun 16  2013 forks ->
/usr/libexec/munin/plugins/forks
lrwxrwxrwx 1 root  root    34 Jun 18  2013 hddtemp ->
/usr/libexec/munin/plugins/hddtemp
lrwxrwxrwx 1 root  root    35 Jun 18  2013 hddtemp2 ->
/usr/libexec/munin/plugins/hddtemp2
lrwxrwxrwx 1 root  root    43 Jun 18  2013 hddtemp_smartctl ->
/usr/libexec/munin/plugins/hddtemp_smartctl
lrwxrwxrwx 1 root  root    35 Jun 18  2013 hddtempd ->
/usr/libexec/munin/plugins/hddtempd
lrwxrwxrwx 1 root  root    30 Jun 21  2013 if_enp2s2f0 ->
/usr/libexec/munin/plugins/if_
lrwxrwxrwx 1 root  root    34 Jun 21  2013 if_err_enp2s2f0 ->
/usr/libexec/munin/plugins/if_err_
lrwxrwxrwx 1 root  root    37 Jun 16  2013 interrupts ->
/usr/libexec/munin/plugins/interrupts
lrwxrwxrwx 1 root  root    35 Jun 16  2013 irqstats ->
/usr/libexec/munin/plugins/irqstats
lrwxrwxrwx 1 root  root    31 Jun 16  2013 load ->
/usr/libexec/munin/plugins/load
lrwxrwxrwx 1 root  root    33 Jun 16  2013 lpstat ->
/usr/libexec/munin/plugins/lpstat
lrwxrwxrwx 1 root  root    34 Jun 18  2013 meminfo ->
/usr/libexec/munin/plugins/meminfo
lrwxrwxrwx 1 root  root    33 Jun 16  2013 memory ->
/usr/libexec/munin/plugins/memory
lrwxrwxrwx 1 root  root    38 Jun 16  2013 munin_stats ->
/usr/libexec/munin/plugins/munin_stats
lrwxrwxrwx 1 root  root    39 Jun 18  2013 munin_update ->
/usr/libexec/munin/plugins/munin_update
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_bin_relay_log ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_commands ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_connections ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_files_tables ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_bpool ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_bpool_act ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_insert_buf ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_io ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_io_pend ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_log ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_rows ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_semaphores ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_innodb_tnx ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_myisam_indexes ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_network_traffic ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_qcache ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_qcache_mem ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_replication ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_select_types ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_slow ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_sorts ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_table_locks ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    33 Jun 21  2013 mysql_tmp_tables ->
/usr/libexec/munin/plugins/mysql_
lrwxrwxrwx 1 root  root    34 Jun 16  2013 netstat ->
/usr/libexec/munin/plugins/netstat
lrwxrwxrwx 1 root  root    40 Jun 18  2013 netstat_multi ->
/usr/libexec/munin/plugins/netstat_multi
lrwxrwxrwx 1 root  root    40 Jun 16  2013 nginx_request ->
/usr/libexec/munin/plugins/nginx_request
lrwxrwxrwx 1 root  root    39 Jun 16  2013 nginx_status ->
/usr/libexec/munin/plugins/nginx_status
lrwxrwxrwx 1 root  root    37 Jun 16  2013 open_files ->
/usr/libexec/munin/plugins/open_files
lrwxrwxrwx 1 root  root    38 Jun 16  2013 open_inodes ->
/usr/libexec/munin/plugins/open_inodes
lrwxrwxrwx 1 root  root    44 Jun 16  2013 postfix_mailqueue ->
/usr/libexec/munin/plugins/postfix_mailqueue
lrwxrwxrwx 1 root  root    44 Jun 16  2013 postfix_mailstats ->
/usr/libexec/munin/plugins/postfix_mailstats
lrwxrwxrwx 1 root  root    45 Jun 16  2013 postfix_mailvolume ->
/usr/libexec/munin/plugins/postfix_mailvolume
lrwxrwxrwx 1 root  root    31 Jun 18  2013 proc ->
/usr/libexec/munin/plugins/proc
lrwxrwxrwx 1 root  root    35 Jun 16  2013 proc_pri ->
/usr/libexec/munin/plugins/proc_pri
lrwxrwxrwx 1 root  root    36 Jun 16  2013 processes ->
/usr/libexec/munin/plugins/processes
lrwxrwxrwx 1 root  root    35 Jun 18  2013 sensors_ ->
/usr/libexec/munin/plugins/sensors_
lrwxrwxrwx 1 root  root    31 Jun 16  2013 swap ->
/usr/libexec/munin/plugins/swap
lrwxrwxrwx 1 root  root    34 Jun 16  2013 threads ->
/usr/libexec/munin/plugins/threads
lrwxrwxrwx 1 root  root    33 Jun 16  2013 uptime ->
/usr/libexec/munin/plugins/uptime
lrwxrwxrwx 1 root  root    32 Jun 16  2013 users ->
/usr/libexec/munin/plugins/users


So I don't have a "network" plugin either but I do have a "network"
section under Categories in the munin web interface.

- Grant

P.S. Any other good plugins you'd recommend?