How-to : mdadm (raid) monitoring and alert emails sent through Gmail

Summary:

Noticed most of the scripts were there, but there were a few steps to get emails sent through Gmail.

How-to : mdadm (raid) monitoring and alert emails sent through Gmail

johnnye 31 Dec 2007 19:48

I do not have a local mail server but wanted any degraded/etc. messages to be sent to my email account.

I used Optware to install msmtp because the default, ssmtp, wasn't playing nicely with TLS/Gmail. I'm assuming this is due to how it was compiled.

ipkg install msmtp

One more package was needed that ipkg didnt solve the dependency for:

ipkg install libiconv

then run:

ldconfig

Now we will set up the smtp server you want to connect to, in this case Gmail.

Create the configuration file and edit:

vi /opt/etc/msmtprc  (optionally you can have user specific config in each home dir)

and add:

defaults
account gmail
host smtp.gmail.com
auth on
user [e-mail]
password changeme
port 587
auto_from on
tls on
tls_certcheck off
logfile /root/msmtp.log
account default : gmail

Lastly, vi /etc/RAID-message-sender-en.sh and change

/sbin/ssmtp $address <$message

to

/opt/bin/msmtp $address <$message

Now test it by running this on command line:

mdadm --monitor --scan --test --program=/etc/RAID-message-sender-en.sh

/edit
I forgot that you need to set what email address to send the mail to.

echo "[e-mail]" > /var/oxsemi/email-recipients

Last edited on 01 Jan 2008 14:54 by johnnye Show more

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

number3 23 Jun 2008 21:09

Great… so I want to implement this… however I cannot find the RAID-send-message-en.sh script in the /etc
I am running on 2.00.18 firmware…
Got msmtp to work, I was thinking to write a little script with mdadm using —mail, however that needs a sendmail replacement.

If anyone has the scripts available then please share them

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 27 Jul 2008 15:43

Hello

There is no trace of RAID-message-sender-en.sh on my My Book 2Tb 02.00.18

So your How-to is perfect for msmtp, but is there something missing (or did I missed something) about this point ?

Thanks,

G.

Last edited on 27 Jul 2008 15:46 by huotg01 Show more

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 28 Jul 2008 03:51

Ihe script was present on my other MBWE (an earlier version).
So, here is it:

#!/bin/sh
# Raid message sender, this script should be run by the mdadm RAID program in 
# monitor mode.
#

#############################################################################
# compases a rebuild message
#
# Param 1: Percent complete
# Param 2: Device affected

rebuild_message() {
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname` 

    The RAID array $2 has completed $1% of its rebuild.
    EOF
}

##############################################################################
#
# Param 1: Name of event
# Param 2: Device affected
# Param 3: Some other relavent component
#
# It uses /var/oxsemi/email-recipients as the list of people to e-mail
#
recipients=/var/oxsemi/email-recipients
message=/tmp/email-message
WEBUIINFOFILE=/var/oxsemi/failed-drives
cat >$message <<-EOF
Subject:RAID $1 Event

EOF

if [ ! -e $message ]
then
    # cannot create a temporary file to hold an e-mail message
    exit 0;
fi

# on event
case $1 in
DeviceDisappeared)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname` 

    The array $2 was previously configured, but no longer appears to be
    present.    

    EOF
    ;;
RebuildStarted)
    # remove the rebuilding drive from the Web-UI's info file
    devtoremove=`echo $2|sed -e 's:\/:\\\/:g'` 
    sed -i -e "/$devtoremove/d" $WEBUIINFOFILE

    # compose an e-mail
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname` 

    The RAID administration program has begun reconstruction of RAID array
    $2. The rebuild process copies data onto the new elements in the
    RAID array to ensure that all components of the array contain the same 
    data. 

    Whilst the rebuild is taking place the system may operate with reduced
    performance.
    EOF
    ;;
Rebuild20)
    rebuild_message 20 $2
    ;;
Rebuild40)
    rebuild_message 40 $2
    ;;
Rebuild60)
    rebuild_message 60 $2
    ;;
Rebuild80)
    rebuild_message 80 $2
    ;;
RebuildFinished)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    The rebuild of    RAID array $2 is complete.
    EOF
    ;;
Fail)
    # write failure info for WebUI
    echo "$2=$3" >> $WEBUIINFOFILE

    # compose e-mail
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    The drive containing partition $3 in RAID array $2 has 
    failed.

    EOF
    ;;
FailSpare)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    The spare drive containing partition $3 in RAID array $2
    has failed. This drive was the target of a RAID rebuild, the system will
    continue running on the remaining drives in the array. 

    EOF
    ;;
SpareActive)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    The spare drive containing partition $3 in RAID array $2
    has completed its rebuild process. 

    EOF
    ;;
NewArray)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    A new RAID array $2 has been detected. 

    EOF
    ;;
DegradedArray)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname` 

    The RAID administration program has noticed RAID array $2 
    appears to be running in a degraded state. 
    EOF
    ;;
MoveSpare)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    A drive has been moved from RAID array $3 to $2. This is to
    allow the faulty device in $2 to be replaced.
    EOF
    ;;
TestMessage)
    cat >>$message <<-EOF
    This is an automatically generated test e-mail from software running 
    on `hostname`
    EOF
    ;;
#These are events for which we shouldn't generate an e-mail
SparesMissing) # no space for spare drives
    if [ -e $message ]
    then
        rm $message
    fi
    exit 0
    ;;
*)
    cat >>$message <<-EOF
    This is an automatically generated e-mail from the RAID administration
    software running on `hostname`

    A $1 event has occured on RAID array $2.

    EOF
    ;;
esac

# e-mail all the people in the e-mail list file.
for address in `cat $recipients`
do
#    /sbin/ssmtp $address <$message
    /sbin/msmtp $address <$message
done

if [ -e $message ]
then
    rm $message
fi

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 28 Jul 2008 04:50

When running

mdadm --monitor --scan --test --program=/etc/RAID-message-sender-en.sh

I have the following message:

/opt/bin/msmtp: can't load library 'libgcrypt.so.11'

Any idea ?

Thanks,

G.

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 28 Jul 2008 13:55

The answer is :

ipkg install libgcrypt

and then

ldconfig

and that's it.

G.

Last edited on 28 Jul 2008 15:17 by huotg01 Show more

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 28 Jul 2008 14:31

It is not going to be an easy one …

When running :

mdadm --monitor --scan --test --program=/etc/RAID-message-sender-en.sh

I know have the following message:

msmtp: the server does not support TLS via the STARTTLS command

Trying to find out what it is.

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

huotg01 28 Jul 2008 16:23

Aleluya !!!

My problem is that I just adapted John's script without understand it :

defaults
account videotron
host relais.videotron.ca
auth on
user Vlxxxxxxxx
password myPW
port 25
auto_from on
tls on
tls_certcheck off
logfile /root/msmtp.log
account default : videotron

Almost everything was OK except that my ISP provider doesn't support authentification…
Therefore auth and tls have to be set to off

…and then it works.

ETJ (End of this journey).

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

Bobbias 31 Dec 2007 19:56

Kinda cool, I'm a bit of a linux newb though, so I don't exactly get what it's doing.. I know it is meant to detect degraded messages and such, but what is it supposed to do after. I don't know much about mdadm's monitor mode.

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

johnnye 01 Jan 2008 14:48

The purpose of this thread was for people who want those mdadm messages mailed to them when they occur.

There is a script in init.d that is run on start, raid_monitoring.sh. It will send emails with the RAID-message-sender-en.sh, for example:
(the $2 would be replaced with which drived failed)

        This is an automatically generated e-mail from the RAID administration
        software running on `hostname`

        The RAID administration program has noticed RAID array $2
        appears to be running in a degraded state.

Last edited on 01 Jan 2008 14:50 by johnnye Show more

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

Bobbias 01 Jan 2008 14:57

Alright, that's pretty cool, I might even look into doing this, just because I know how much losing a lot of information can hurt, since I've had to format my 320 GB harddrive before (with 200+GB of anime, music, and a couple movies.)

Re: How-to : mdadm (raid) monitoring and alert emails sent through Gmail

number3 26 Jun 2008 21:19

Just a questions… do you need to add the script init.d to anything. Or will it functiono when you add the msmtp configuration?