General OpenNMS Discussion.

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Fuhrmann, Marcel | 16 Aug 2012 17:26

Monitoring softraids

Hello!

I could write a bash script to watch for the up status [UUU] from:

--------

cat /proc/mdstat

Personalities : [raid1] [raid5]

read_ahead 1024 sectors

md2 : active raid5 hdc3[0] hde3[1] hdg3[2]

112639744 blocks level 5, 64k chunk, algorithm 0 [3/3] [UUU]

md1 : active raid1 hdc2[0] hde2[1] hdg2[2]

512000 blocks [2/2] [UU]

md0 : active raid1 hdc1[0] hde1[1] hdg1[2]

511936 blocks [3/3] [UUU]

unused devices: <none>

-------

and use the send-event.pl script to create an event. Does anybody know a better solution for monitoring a softraid?

Can OpenNMS handle this without an external script?

Marcel

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John A. Sullivan III | 16 Aug 2012 18:17

Re: Monitoring softraids

On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
> Hello!
> 
>  
> 
> I could write a bash script to watch for the up status [UUU] from:
> 
> <snip> 
> 
> and use the send-event.pl script to create an event. Does anybody know
> a better solution for monitoring a softraid?
> 
> Can OpenNMS handle this without an external script?
> 
<snip>
That's how we do it:

#!/bin/bash
# We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade
uptime statistics
# We do generate alarm generating events on failure
SEVENT="/opt/opennms/bin/send-event.pl"
UEI="uei.mycompany.com/node/"
SERVICE="-s MDRAID"
SEV="-x 5" # Minor severity
HOST=${2}
TMOUT=${4}
#NID="-n ${5}"
NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where
ipaddr='${HOST}';" onms)"
PORT=${5:-22}
IFSORIG=${IFS}
IFS=$'\n'
declare -a OUTPUT
INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
if [ $? -ne 0 ];then
        eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
        exit 0
fi
IFS=${IFSORIG}
c=0
while [ -n "${INPUT[${c}]}" ]
do
        if [ "${INPUT[${c}]:0:2}" = "md" ];then
                ((c = c + 1))
                if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
                        eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
                fi
        fi
        ((c = c + 1))
done
exit 0

We then have a script launched from the Destination Paths which tries to
automatically fix the problem and then calls in humans if that fails.
I'd be very interested in a better way - John

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Fuhrmann, Marcel | 16 Aug 2012 20:32

Re: Monitoring softraids

Afaik mdadm can send emails when an error occours. Opennms can watch over pop3/imap accounts. So this could
be another solution.
Maybe it is possible to send a snmp trap when a raid is faulty?

Von meinem iPhone gesendet

Am 16.08.2012 um 18:33 schrieb "John A. Sullivan III" <jsullivan <at> opensourcedevel.com>:

> On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
>> Hello!
>> 
>> 
>> 
>> I could write a bash script to watch for the up status [UUU] from:
>> 
>> <snip> 
>> 
>> and use the send-event.pl script to create an event. Does anybody know
>> a better solution for monitoring a softraid?
>> 
>> Can OpenNMS handle this without an external script?
>> 
> <snip>
> That's how we do it:
> 
> #!/bin/bash
> # We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade
uptime statistics
> # We do generate alarm generating events on failure
> SEVENT="/opt/opennms/bin/send-event.pl"
> UEI="uei.mycompany.com/node/"
> SERVICE="-s MDRAID"
> SEV="-x 5" # Minor severity
> HOST=${2}
> TMOUT=${4}
> #NID="-n ${5}"
> NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where
ipaddr='${HOST}';" onms)"
> PORT=${5:-22}
> IFSORIG=${IFS}
> IFS=$'\n'
> declare -a OUTPUT
> INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
> if [ $? -ne 0 ];then
>        eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
>        exit 0
> fi
> IFS=${IFSORIG}
> c=0
> while [ -n "${INPUT[${c}]}" ]
> do
>        if [ "${INPUT[${c}]:0:2}" = "md" ];then
>                ((c = c + 1))
>                if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
>                        eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
>                fi
>        fi
>        ((c = c + 1))
> done
> exit 0
> 
> We then have a script launched from the Destination Paths which tries to
> automatically fix the problem and then calls in humans if that fails.
> I'd be very interested in a better way - John
> 
> 
> 
> ------------------------------------------------------------------------------
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> threat landscape has changed and how IT managers can respond. Discussions 
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> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
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Umberto Nicoletti | 17 Aug 2012 21:48

Re: Monitoring softraids

You could also configure mdadm to log a message when it detects something interesting and then relay that message into opennms via syslog.

hth,

Umberto

On Thursday, August 16, 2012, Fuhrmann, Marcel wrote:

Afaik mdadm can send emails when an error occours. Opennms can watch over pop3/imap accounts. So this could be another solution.
Maybe it is possible to send a snmp trap when a raid is faulty?

Von meinem iPhone gesendet

Am 16.08.2012 um 18:33 schrieb "John A. Sullivan III" <jsullivan <at> opensourcedevel.com>:

> On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
>> Hello!
>>
>>
>>
>> I could write a bash script to watch for the up status [UUU] from:
>>
>> <snip>
>>
>> and use the send-event.pl script to create an event. Does anybody know
>> a better solution for monitoring a softraid?
>>
>> Can OpenNMS handle this without an external script?
>>
> <snip>
> That's how we do it:
>
> #!/bin/bash
> # We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade uptime statistics
> # We do generate alarm generating events on failure
> SEVENT="/opt/opennms/bin/send-event.pl"
> UEI="uei.mycompany.com/node/"
> SERVICE="-s MDRAID"
> SEV="-x 5" # Minor severity
> HOST=${2}
> TMOUT=${4}
> #NID="-n ${5}"
> NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where ipaddr='${HOST}';" onms)"
> PORT=${5:-22}
> IFSORIG=${IFS}
> IFS=$'\n'
> declare -a OUTPUT
> INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
> if [ $? -ne 0 ];then
> eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
> exit 0
> fi
> IFS=${IFSORIG}
> c=0
> while [ -n "${INPUT[${c}]}" ]
> do
> if [ "${INPUT[${c}]:0:2}" = "md" ];then
> ((c = c + 1))
> if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
> eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
> fi
> fi
> ((c = c + 1))
> done
> exit 0
>
> We then have a script launched from the Destination Paths which tries to
> automatically fix the problem and then calls in humans if that fails.
> I'd be very interested in a better way - John
>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Please read the OpenNMS Mailing List FAQ:
> http://www.opennms.org/index.php/Mailing_List_FAQ
>
> opennms-discuss mailing list
>
> To *unsubscribe* or change your subscription options, see the bottom of this page:
> https://lists.sourceforge.net/lists/listinfo/opennms-discuss

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threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Fuhrmann, Marcel | 21 Aug 2012 15:00

Re: Monitoring softraids

I found this script. But how do get this “snmp data” into OpenNMS?

http://ticktoo.com/blog/34-Software+Raid+Monitoring+via+Nagios-SNMP

Von: Umberto Nicoletti [mailto:umberto.nicoletti <at> gmail.com]
Gesendet: Freitag, 17. August 2012 21:48
An: General OpenNMS Discussion
Betreff: Re: [opennms-discuss] Monitoring softraids

You could also configure mdadm to log a message when it detects something interesting and then relay that message into opennms via syslog.

hth,

Umberto

On Thursday, August 16, 2012, Fuhrmann, Marcel wrote:

Afaik mdadm can send emails when an error occours. Opennms can watch over pop3/imap accounts. So this could be another solution.
Maybe it is possible to send a snmp trap when a raid is faulty?

Von meinem iPhone gesendet

Am 16.08.2012 um 18:33 schrieb "John A. Sullivan III" <jsullivan <at> opensourcedevel.com>:

> On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
>> Hello!
>>
>>
>>
>> I could write a bash script to watch for the up status [UUU] from:
>>
>> <snip>
>>
>> and use the send-event.pl script to create an event. Does anybody know
>> a better solution for monitoring a softraid?
>>
>> Can OpenNMS handle this without an external script?
>>
> <snip>
> That's how we do it:
>
> #!/bin/bash
> # We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade uptime statistics
> # We do generate alarm generating events on failure
> SEVENT="/opt/opennms/bin/send-event.pl"
> UEI="uei.mycompany.com/node/"
> SERVICE="-s MDRAID"
> SEV="-x 5" # Minor severity
> HOST=${2}
> TMOUT=${4}
> #NID="-n ${5}"
> NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where ipaddr='${HOST}';" onms)"
> PORT=${5:-22}
> IFSORIG=${IFS}
> IFS=$'\n'
> declare -a OUTPUT
> INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
> if [ $? -ne 0 ];then
> eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
> exit 0
> fi
> IFS=${IFSORIG}
> c=0
> while [ -n "${INPUT[${c}]}" ]
> do
> if [ "${INPUT[${c}]:0:2}" = "md" ];then
> ((c = c + 1))
> if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
> eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
> fi
> fi
> ((c = c + 1))
> done
> exit 0
>
> We then have a script launched from the Destination Paths which tries to
> automatically fix the problem and then calls in humans if that fails.
> I'd be very interested in a better way - John
>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Please read the OpenNMS Mailing List FAQ:
> http://www.opennms.org/index.php/Mailing_List_FAQ
>
> opennms-discuss mailing list
>
> To *unsubscribe* or change your subscription options, see the bottom of this page:
> https://lists.sourceforge.net/lists/listinfo/opennms-discuss

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threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Alexander Finger | 21 Aug 2012 15:13

Re: Monitoring softraids

You need to change the format to correspond to what snmp expects as a table format.

Saying "snmp data" is absolutely correct. The script returns a string. In Nagios, you can then split() the string and use the data. That permits you to pack several values in such a string. SNMP, however, uses tables to represent such a structure, and not split().

However - can you not derive a script from the example?

alex

On Tue, Aug 21, 2012 at 3:00 PM, Fuhrmann, Marcel <Marcel.Fuhrmann <at> lux.ag> wrote:

I found this script. But how do get this “snmp data” into OpenNMS?

http://ticktoo.com/blog/34-Software+Raid+Monitoring+via+Nagios-SNMP

Von: Umberto Nicoletti [mailto:umberto.nicoletti <at> gmail.com]
Gesendet: Freitag, 17. August 2012 21:48
An: General OpenNMS Discussion
Betreff: Re: [opennms-discuss] Monitoring softraids

You could also configure mdadm to log a message when it detects something interesting and then relay that message into opennms via syslog.

hth,

Umberto

On Thursday, August 16, 2012, Fuhrmann, Marcel wrote:

Afaik mdadm can send emails when an error occours. Opennms can watch over pop3/imap accounts. So this could be another solution.
Maybe it is possible to send a snmp trap when a raid is faulty?

Von meinem iPhone gesendet

Am 16.08.2012 um 18:33 schrieb "John A. Sullivan III" <jsullivan <at> opensourcedevel.com>:

> On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
>> Hello!
>>
>>
>>
>> I could write a bash script to watch for the up status [UUU] from:
>>
>> <snip>
>>
>> and use the send-event.pl script to create an event. Does anybody know
>> a better solution for monitoring a softraid?
>>
>> Can OpenNMS handle this without an external script?
>>
> <snip>
> That's how we do it:
>
> #!/bin/bash
> # We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade uptime statistics
> # We do generate alarm generating events on failure
> SEVENT="/opt/opennms/bin/send-event.pl"
> UEI="uei.mycompany.com/node/"
> SERVICE="-s MDRAID"
> SEV="-x 5" # Minor severity
> HOST=${2}
> TMOUT=${4}
> #NID="-n ${5}"
> NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where ipaddr='${HOST}';" onms)"
> PORT=${5:-22}
> IFSORIG=${IFS}
> IFS=$'\n'
> declare -a OUTPUT
> INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
> if [ $? -ne 0 ];then
> eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
> exit 0
> fi
> IFS=${IFSORIG}
> c=0
> while [ -n "${INPUT[${c}]}" ]
> do
> if [ "${INPUT[${c}]:0:2}" = "md" ];then
> ((c = c + 1))
> if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
> eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
> fi
> fi
> ((c = c + 1))
> done
> exit 0
>
> We then have a script launched from the Destination Paths which tries to
> automatically fix the problem and then calls in humans if that fails.
> I'd be very interested in a better way - John
>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Please read the OpenNMS Mailing List FAQ:
> http://www.opennms.org/index.php/Mailing_List_FAQ
>
> opennms-discuss mailing list
>
> To *unsubscribe* or change your subscription options, see the bottom of this page:
> https://lists.sourceforge.net/lists/listinfo/opennms-discuss

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threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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To *unsubscribe* or change your subscription options, see the bottom of this page:

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threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Umberto Nicoletti | 21 Aug 2012 15:19

Re: Monitoring softraids

Like this perhaps?

http://www.opennms.org/wiki/Net-snmp_extend_collections

On Tue, Aug 21, 2012 at 3:00 PM, Fuhrmann, Marcel <Marcel.Fuhrmann <at> lux.ag> wrote:

I found this script. But how do get this “snmp data” into OpenNMS?

http://ticktoo.com/blog/34-Software+Raid+Monitoring+via+Nagios-SNMP

Von: Umberto Nicoletti [mailto:umberto.nicoletti <at> gmail.com]
Gesendet: Freitag, 17. August 2012 21:48
An: General OpenNMS Discussion
Betreff: Re: [opennms-discuss] Monitoring softraids

You could also configure mdadm to log a message when it detects something interesting and then relay that message into opennms via syslog.

hth,

Umberto

On Thursday, August 16, 2012, Fuhrmann, Marcel wrote:

Afaik mdadm can send emails when an error occours. Opennms can watch over pop3/imap accounts. So this could be another solution.
Maybe it is possible to send a snmp trap when a raid is faulty?

Von meinem iPhone gesendet

Am 16.08.2012 um 18:33 schrieb "John A. Sullivan III" <jsullivan <at> opensourcedevel.com>:

> On Thu, 2012-08-16 at 15:26 +0000, Fuhrmann, Marcel wrote:
>> Hello!
>>
>>
>>
>> I could write a bash script to watch for the up status [UUU] from:
>>
>> <snip>
>>
>> and use the send-event.pl script to create an event. Does anybody know
>> a better solution for monitoring a softraid?
>>
>> Can OpenNMS handle this without an external script?
>>
> <snip>
> That's how we do it:
>
> #!/bin/bash
> # We always exit 0 because a failure of this test does not indicate an outage and thus should not degrade uptime statistics
> # We do generate alarm generating events on failure
> SEVENT="/opt/opennms/bin/send-event.pl"
> UEI="uei.mycompany.com/node/"
> SERVICE="-s MDRAID"
> SEV="-x 5" # Minor severity
> HOST=${2}
> TMOUT=${4}
> #NID="-n ${5}"
> NID="-n $(psql -U onmsuser -h pgsql.mycompany.com -qtAc "select nodeid from ipinterface where ipaddr='${HOST}';" onms)"
> PORT=${5:-22}
> IFSORIG=${IFS}
> IFS=$'\n'
> declare -a OUTPUT
> INPUT=($(ssh -p ${PORT} -o ConnectTimeout=${TMOUT} ${HOST} "cat /proc/mdstat" 2>/dev/null))
> if [ $? -ne 0 ];then
> eval ${SEVENT} ${UEI}MDRAIDTestFailed ${NID} ${SERVICE} ${SEV}
> exit 0
> fi
> IFS=${IFSORIG}
> c=0
> while [ -n "${INPUT[${c}]}" ]
> do
> if [ "${INPUT[${c}]:0:2}" = "md" ];then
> ((c = c + 1))
> if [ -n "$(echo ${INPUT[${c}]} | grep -P '.* \[[[:alpha:]_]*_[[:alpha:]_]*\]')" ];then
> eval ${SEVENT} ${UEI}MDRAIDDegraded ${NID} ${SERVICE} ${SEV} -p \"device ${INPUT[((${c} - 1))]%% *}\"
> fi
> fi
> ((c = c + 1))
> done
> exit 0
>
> We then have a script launched from the Destination Paths which tries to
> automatically fix the problem and then calls in humans if that fails.
> I'd be very interested in a better way - John
>
>
>
> ------------------------------------------------------------------------------
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> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

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