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check_snmp_storage* reporting incorrect memory values
Posted: Sun Oct 07, 2018 4:25 am
by boeingcccs2
I am attempting to utilize the snmp v3 monitoring. Everything seems to be working correctly except for the RAM usage...
Example CMD:
check_snmp_storage.pl -H <my HOST> -l <my user> -x <authentication> -X <privacy> -L SHA, AES -q Ram -m Physical -w 50 -c 80
Reporting 100% used - Reality is 7-8%
Its as if its including cached memory when it shouldn't?
Is there a way to suppress the cache in the report?
Thanks in advance
John-
Re: check_snmp_storage* reporting incorrect memory values
Posted: Mon Oct 08, 2018 9:57 am
by jforcier
What are you trying to monitor?
Try using this command instead:
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./check_snmp_storage_wizard.pl -H <HOSTNAME> -C public --v2c -m "Physical" -T pl -w 10 -c 5 -f
Output:
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Physical memory: 79%left(1450MB/1840MB) (>10%) : OK | 'Physical_memory'=390MB;1656;1748;0;1840
Re: check_snmp_storage* reporting incorrect memory values
Posted: Mon Oct 08, 2018 10:53 am
by boeingcccs2
I have to use snmp v3.. however I used this command with the v3 credentials and it still comes back indicating that 0% left
for some reason its reporting cache with whats being used which should not be done. (if I dump the cache it reports correctly - not a good practice)
In this instance I am trying to get the Ram utilization off the server to report correctly.
Re: check_snmp_storage* reporting incorrect memory values
Posted: Mon Oct 08, 2018 1:29 pm
by tgriep
What OS and release is the remote server running?
What version is the plugin?
Run this to get that.
Can you post the full output of the plugin with verbose enabled so we can see it's output?
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./check_snmp_storage.pl -H <my HOST> -l <my user> -x <authentication> -X <privacy> -L SHA, AES -q Ram -m Physical -w 50 -c 80 -v
Thanks
Re: check_snmp_storage* reporting incorrect memory values
Posted: Tue Oct 09, 2018 9:05 am
by boeingcccs2
The OS on the entire system is RedHat 6.6 (Monitoring and Remote servers)
The Version of the plugin is (Check_snmp_storage version: 1.3.3)
Complete output:
Alarm at 15
SNMPv3 login
SNMPv3 AuthPriv login : nagios, SHA, AES
Filter : Physical
OID : 1.3.6.1.2.1.25.2.3.1.3.46, Desc : /shared
OID : 1.3.6.1.2.1.25.2.3.1.3.40, Desc : /tmp
OID : 1.3.6.1.2.1.25.2.3.1.3.45, Desc : /logging
OID : 1.3.6.1.2.1.25.2.3.1.3.35, Desc : /dev/shm
OID : 1.3.6.1.2.1.25.2.3.1.3.6, Desc : Memory buffers
OID : 1.3.6.1.2.1.25.2.3.1.3.1, Desc : Physical memory
OID : 1.3.6.1.2.1.25.2.3.1.2.1, Storagetype: Ram ?= Ram
Name : Physical memory, Index : 1
OID : 1.3.6.1.2.1.25.2.3.1.3.41, Desc : /var/tmp
OID : 1.3.6.1.2.1.25.2.3.1.3.38, Desc : /local_data
OID : 1.3.6.1.2.1.25.2.3.1.3.44, Desc : /cm
OID : 1.3.6.1.2.1.25.2.3.1.3.36, Desc : /boot
OID : 1.3.6.1.2.1.25.2.3.1.3.7, Desc : Cached memory
OID : 1.3.6.1.2.1.25.2.3.1.3.37, Desc : /home
OID : 1.3.6.1.2.1.25.2.3.1.3.3, Desc : Virtual memory
OID : 1.3.6.1.2.1.25.2.3.1.3.10, Desc : Swap space
OID : 1.3.6.1.2.1.25.2.3.1.3.43, Desc : /c3s
OID : 1.3.6.1.2.1.25.2.3.1.3.31, Desc : /
storages selected : 1
1.3.6.1.2.1.25.2.3.1.5.1 : 65858448
1.3.6.1.2.1.25.2.3.1.6.1 : 65586068
1.3.6.1.2.1.25.2.3.1.4.1 : 1024
Descr : Physical memory
Size : 65858448
Used : 65586068
Alloc : 1024
Perf data : 'Physical_memory'=64049MB;32157;51452;0;64315
Physical memory: 100%used(64049MB/64315MB) (>80%) : CRITICAL
Re: check_snmp_storage* reporting incorrect memory values
Posted: Tue Oct 09, 2018 11:19 am
by tgriep
Thanks for the data. The remote server seems to be reporting that most of the memory is used.
This OID shows the amount of used memory and it almost matches the total memory.
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1.3.6.1.2.1.25.2.3.1.6.1 : 65586068
The Check_snmp_storage plugin does not have the ability to exclude the Cached memory from the calculations but the check_snmp_mem.pl plugin does.
Just add the -m option to exclude it.
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Usage: ./check_snmp_mem.pl [-v] -H <host> -C <snmp_community> [-2] | (-l login -x passwd [-X pass -L <authp>,<privp>]) [-p <port>] -w <warn level> -c <crit level> [-I|-N|-E] [-f] [-m] [-t <timeout>] [-V]
-v, --verbose
print extra debugging information (including interface list on the system)
-h, --help
print this help message
-H, --hostname=HOST
name or IP address of host to check
-C, --community=COMMUNITY NAME
community name for the host's SNMP agent (implies SNMP v1 or v2c with option)
-2, --v2c
Use snmp v2c
-l, --login=LOGIN ; -x, --passwd=PASSWD
Login and auth password for snmpv3 authentication
If no priv password exists, implies AuthNoPriv
-X, --privpass=PASSWD
Priv password for snmpv3 (AuthPriv protocol)
-L, --protocols=<authproto>,<privproto>
<authproto> : Authentication protocol (md5|sha : default md5)
<privproto> : Priv protocole (des|aes : default des)
-P, --port=PORT
SNMP port (Default 161)
-w, --warn=INTEGER | INT,INT
warning level for memory in percent (0 for no checks)
Default (-N switch) : comma separated level for Real Memory and Swap
-I switch : warning level
-c, --crit=INTEGER | INT,INT
critical level for memory in percent (0 for no checks)
Default (-N switch) : comma separated level for Real Memory and Swap
-I switch : critical level
-N, --netsnmp (default)
check linux memory & swap provided by Net SNMP
-m, --memcache
include cached memory in used memory (only with Net-SNMP)
-I, --cisco
check cisco memory (sum of all memory pools)
-E, --hp
check HP proccurve memory
-f, --perfdata
Performance data output
-t, --timeout=INTEGER
timeout for SNMP in seconds (Default: 5)
-V, --version
prints version number
Re: check_snmp_storage* reporting incorrect memory values
Posted: Thu Oct 11, 2018 9:08 am
by boeingcccs2
That did the trick thank you! only have one other question... Once I added this in I don't see the performance charts available, Im guessing this is some cfg I missed?
Re: check_snmp_storage* reporting incorrect memory values
Posted: Thu Oct 11, 2018 9:37 am
by tgriep
The performance data output between the plugins are different so when the change was made to the new plugin, the system stops graphing the performance data.
You would have to remove the performance data files from the system so they will be recreated with the new data.
Go to the following folder on the Nagios server (Replace hostname with the actual host name)
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/usr/local/nagios/share/perfdata/hostname
Then delete the .xml and .rrd files with the service name in it and within 15 minutes, they should be recreated with the new data.
Also, make sure you enabled the performance data output option in the command in Nagios XI.
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-f, --perfdata
Performance data output
Re: check_snmp_storage* reporting incorrect memory values
Posted: Thu Oct 11, 2018 1:44 pm
by boeingcccs2
Perfect thanks for the help!
Re: check_snmp_storage* reporting incorrect memory values
Posted: Thu Oct 11, 2018 2:20 pm
by tgriep
Your welcome. Is it OK to lock up this post as solved for you?