Need Assistance with Swap monitoring.

[aditya.c.anand]

Hello Team,

We are using SNMP for all server/services monitoring.

For Memory Usage checks we are using : check_snmp_mem.pl for both RAM as well as Swap monitoring.

Can you please suggest how can we monitor only Swap utilization.

Please suggest us with any plugin or script via which we can monitor the same.

[tgriep]

You can use the check_snmp_storage plugin to monitor the Swap space. An example of the command is below.

Code: Select all

./check_snmp_storage.pl  -H 192.168.1.1 -C public -2 -w 30 -c 50 -m "Swap"

This is the output of the above check.

Code: Select all

Swap space: 15%used(299MB/2048MB) (<30%) : OK

For more details on the usage of the plugin, take a look at the help screen below.

Usage: check_snmp_storage [-v] -H <host> -C <snmp_community> [-2] | (-l login -x passwd [-X pass -L <authp>,<privp>]) [-p <port>] -m <name in desc_oid> [-q storagetype] -w <warn_level> -c <crit_level> [-t <timeout>] [-T pl|pu|bl|bu ] [-r -s -i -G] [-e] [-S 0|1[,1,<car>]] [-o <octet_length>] [-R <% reserved>]
By default, plugin will monitor %used on drives :
warn if %used > warn and critical if %used > crit
-v, --verbose
print extra debugging information (and lists all storages)
-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)
-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)
-x, --passwd=PASSWD
Password for snmpv3 authentication
-p, --port=PORT
SNMP port (Default 161)
-m, --name=NAME
Name in description OID (can be mounpoints '/home' or 'Swap Space'...)
This is treated as a regexp : -m /var will match /var , /var/log, /opt/var ...
Test it before, because there are known bugs (ex : trailling /)
No trailing slash for mountpoints !
-q, --storagetype=[Other|Ram|VirtualMemory|FixedDisk|RemovableDisk|FloppyDisk
CompactDisk|RamDisk|FlashMemory|NetworkDisk]
Also check the storage type in addition of the name
It is possible to use regular expressions ( "FixedDisk|FloppyDisk" )
-r, --noregexp
Do not use regexp to match NAME in description OID
-s, --sum
Add all storages that match NAME (used space and total space)
THEN make the tests.
-i, --index
Parse index table instead of description table to select storage
-e, --exclude
Select all storages except the one(s) selected by -m
No action on storage type selection
-T, --type=TYPE
pl : calculate percent left
pu : calculate percent used (Default)
bl : calculate MegaBytes left
bu : calculate MegaBytes used
-w, --warn=INTEGER
percent / MB of disk used to generate WARNING state
you can add the % sign
-c, --critical=INTEGER
percent / MB of disk used to generate CRITICAL state
you can add the % sign
-R, --reserved=INTEGER
% reserved blocks for superuser
For ext2/3 filesystems, it is 5% by default
-G, --gigabyte
output, warning & critical levels in gigabytes
-f, --perfparse
Perfparse compatible output
-S, --short=<type>[,<where>,<cut>]
<type>: Make the output shorter :
0 : only print the global result except the disk in warning or critical
ex: "< 80% : OK"
1 : Don't print all info for every disk
ex : "/ : 66 %used (< 80) : OK"
<where>: (optional) if = 1, put the OK/WARN/CRIT at the beginning
<cut>: take the <n> first caracters or <n> last if n<0
-o, --octetlength=INTEGER
max-size of the SNMP message, usefull in case of Too Long responses.
Be carefull with network filters. Range 484 - 65535, default are
usually 1472,1452,1460 or 1440.
-t, --timeout=INTEGER
timeout for SNMP in seconds (Default: 5)
-V, --version
prints version number
Note :
with T=pu or T=bu : OK < warn < crit
with T=pl ot T=bl : crit < warn < OK

If multiple storage are selected, the worse condition will be returned
i.e if one disk is critical, the return is critical

example :
Browse storage list : <script> -C <community> -H <host> -m <anything> -w 1 -c 2 -v
the -m option allows regexp in perl format :
Test drive C,F,G,H,I on Windows : -m ^[CFGHI]:
Test all mounts containing /var : -m /var
Test all mounts under /var : -m ^/var
Test only /var : -m /var -r
Test all swap spaces : -m ^Swap
Test all but swap spaces : -m ^Swap -e