Munin contributed plugins

#!/bin/bash

: <<=cut

=head1 NAME 

 emc_vnx_block_lun_perfdata - Plugin to monitor Block statistics of EMC VNX 5300

 Unified Storage Processors

=head1 AUTHOR

 Evgeny Beysembaev <megabotva@gmail.com>

=head1 LICENSE

 GPLv2

=head1 MAGIC MARKERS

  #%# family=auto

  #%# capabilities=autoconf

=head1 DESCRIPTION

 The plugin monitors LUN of EMC Unified Storage FLARE SP's. Probably it can also

 be compatible with  other Clariion systems. It uses SSH to connect to Control 

 Stations, then remotely executes /nas/sbin/navicli and fetches and parses data 

 from it. Obviously, it's easy to reconfigure plugin not to use Control Stations'

 navicli in favor of using locally installed /opt/Navisphere's cli. There is no 

 difference which Storage Processor to use to gather data, so this plugin tries 

 both of them and uses the first active one. This plugin also automatically 

 chooses Primary Control Station from the list by calling /nasmcd/sbin/getreason 

 and /nasmcd/sbin/t2slot.

 I left some parts of this plugin as rudimental to make easy to reconfigure it 

 to draw more (or less) data.

=head1 COMPATIBILITY

 The plugin has been written for being compatible with EMC VNX5300 Storage 

 system, as this is the only EMC storage which i have. By the way, i am pretty 

 sure it can also work with other VNX1 storages, like VNX5100 and VNX5500, and 

 old-style Clariion systems.

 About VNX2 series, i don't know whether the plugin will be able to work with 

 them. Maybe it would need some corrections in command-line backend. The same 

 situation is with other EMC systems, so i encourage you to try and fix the 

 plugin. 

=head1 CONFIGURATION

=head2 Prerequisites

 First of all, be sure that statistics collection is turned on. You can do this

 by typing:

 navicli -h spa setstats -on

 on your Control Station or locally through /opt/Navisphere 

 Also, the plugin actively uses buggy "cdef" feature of Munin 2.0, and here we 

 can be hit by the following bugs:

 http://munin-monitoring.org/ticket/1017 - Here I have some workarounds in the 

 plugin, be sure that they are working.

 http://munin-monitoring.org/ticket/1352 - Metrics in my plugin can be much 

 longer than 15 characters.

 Without these workarounds "Load" and "Queue Length" would not work.

=head2 Installation

 The plugin uses SSH to connect to Control Stations. It's possible to use 

 'nasadmin' user, but it would be better if you create read-only global user by

 Unisphere Client. The user should have only Operator role. I created "operator"

 user but due to the fact that Control Stations already had one internal 

 "operator" user, the new one was called "operator1". So be careful.

 On munin-node side choose a user which will be used to connect through SSH. 

 Generally user "munin" is ok. Then, execute "sudo su munin -s /bin/bash", 

 "ssh-keygen" and "ssh-copy-id" to both Control Stations with newly created 

 user.

 Make a link from /usr/share/munin/plugins/emc_vnx_dm_basic_stats to 

 /etc/munin/plugins/emc_vnx_dm_basic_stats_<NAME>, where <NAME> is any 

 arbitrary name of your storage system. The plugin will return <NAME> in its 

 answer as "host_name" field. Assume your storage system is called "VNX5300".

 Make a configuration file at 

 /etc/munin/plugin-conf.d/emc_vnx_block_lun_perfdata_VNX5300:

 [emc_vnx_block_lun_perfdata_VNX5300]

 user munin					

 env.username operator1				

 env.cs_addr 192.168.1.1 192.168.1.2		

 Where: 

 user - SSH Client local user

 env.username - Remote user with Operator role

 env.cs_addr - Control Stations addresses

=head1 ERRATA

 It counts Queue Length in not fully correct way. We take parameters totally 

 from both SP's, but after we divide them independently by load of SPA and SPB.

 Anyway, in most AAA / ALUA cases the formula is correct.

=head1 HISTORY

 09.11.2016 - First Release

 26.12.2016 - Compatibility with Munin coding style

=cut

export LANG=C

. "$MUNIN_LIBDIR/plugins/plugin.sh"

TARGET=$(echo "${0##*/}" | cut -d _ -f 6)

# "All SP's we have"

SPALL="SPA SPB"

NAVICLI="/nas/sbin/navicli"

ssh_check_cmd() {

		ssh -q $username@$1 "/nasmcd/sbin/getreason | grep -w slot_\`/nasmcd/sbin/t2slot\` | cut -d- -f1"

}

check_conf () {

	if [ -z "$username" ]; then

		echo "No username ('username' environment variable)!"

		return 1

	fi

	if [ -z "$cs_addr" ]; then

		echo "No control station addresses ('cs_addr' environment variable)!"

		return 1

	fi

	#Choosing Cotrol Station. Code have to be "10"

	for CS in $cs_addr; do

		if [[ "10" -eq "$(ssh_check_cmd \"$CS\")" ]]; then

			PRIMARY_CS=$CS

			break

		fi

	done

	if [ -z "$PRIMARY_CS" ]; then

		echo "No alive primary Control Station from list \"$cs_addr\"";

		return 1

	fi

	return 0

}

if [ "$1" = "autoconf" ]; then

	check_conf_ans=$(check_conf)

		if [ $? -eq 0 ]; then

			echo "yes"

		else

			echo "no ($check_conf_ans)"

		fi

		exit 0

fi

check_conf 1>&2

if [[ $? -eq 1 ]]; then

	exit 1;

fi

SSH="ssh -q $username@$PRIMARY_CS "

get_working_sp() {

	local probe_sp

	for probe_sp in $SPALL; do

		if $SSH $NAVICLI -h $PROBESP >/dev/null 2>&1; then

			echo "$probe_sp"

			return 0

		fi

	done

}

StorageProcessor=$(get_working_sp)

[ -z "$StorageProcessor" ] && echo echo "No active Storage Processor found!" >&2 && exit 1

run_remote_navicli() {

    $SSH $NAVICLI -h "$StorageProcessor" "$@"

}

# Get Lun List

LUNLIST=$(run_remote_navicli "lun -list -drivetype | sed -ne 's/^Name:\ *//p')"

echo "host_name ${TARGET}"

echo

if [ "$1" = "config" ] ; then

	cat <<-EOF 

		multigraph emc_vnx_block_blocks

		graph_category disk

		graph_title EMC VNX 5300 LUN Blocks

		graph_vlabel Blocks Read (-) / Written (+)

		graph_args --base 1000

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF 

			${LUN}_read.label none

			${LUN}_read.graph no

			${LUN}_read.min 0

			${LUN}_read.draw AREA

			${LUN}_read.type COUNTER

			${LUN}_write.label $LUN Blocks

			${LUN}_write.negative ${LUN}_read

			${LUN}_write.type COUNTER

			${LUN}_write.min 0

			${LUN}_write.draw STACK

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_req

		graph_category disk

		graph_title EMC VNX 5300 LUN Requests

		graph_vlabel Requests: Read (-) / Write (+)

		graph_args --base 1000

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF

			${LUN}_readreq.label none

			${LUN}_readreq.graph no

			${LUN}_readreq.min 0

			${LUN}_readreq.type COUNTER

			${LUN}_writereq.label $LUN Requests

			${LUN}_writereq.negative ${LUN}_readreq

			${LUN}_writereq.type COUNTER

			${LUN}_writereq.min 0

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_ticks

		graph_category disk

		graph_title EMC VNX 5300 Counted Load per LUN

		graph_vlabel Load, % * Number of LUNs 

		graph_args --base 1000 -l 0 -r 

	EOF

	echo -n "graph_order "

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		echo -n "${LUN}_busyticks ${LUN}_idleticks ${LUN}_bta=${LUN}_busyticks_spa ${LUN}_idleticks_spa ${LUN}_btb=${LUN}_busyticks_spb ${LUN}_idleticks_spb "

	done <<< "$LUNLIST"

	echo ""

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF

			${LUN}_busyticks_spa.label $LUN Busy Ticks SPA

			${LUN}_busyticks_spa.type COUNTER

			${LUN}_busyticks_spa.graph no

			${LUN}_bta.label $LUN Busy Ticks SPA

			${LUN}_bta.graph no

			${LUN}_idleticks_spa.label $LUN Idle Ticks SPA

			${LUN}_idleticks_spa.type COUNTER

			${LUN}_idleticks_spa.graph no

			${LUN}_busyticks_spb.label $LUN Busy Ticks SPB

			${LUN}_busyticks_spb.type COUNTER

			${LUN}_busyticks_spb.graph no

			${LUN}_btb.label $LUN Busy Ticks SPB

			${LUN}_btb.graph no

			${LUN}_idleticks_spb.label $LUN Idle Ticks SPB

			${LUN}_idleticks_spb.type COUNTER

			${LUN}_idleticks_spb.graph no

			${LUN}_load_spa.label $LUN load SPA 

			${LUN}_load_spa.draw AREASTACK

			${LUN}_load_spb.label $LUN load SPB

			${LUN}_load_spb.draw AREASTACK

			${LUN}_load_spa.cdef 100,${LUN}_bta,${LUN}_busyticks_spa,${LUN}_idleticks_spa,+,/,*

			${LUN}_load_spb.cdef 100,${LUN}_btb,${LUN}_busyticks_spa,${LUN}_idleticks_spa,+,/,*

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_outstanding

		graph_category disk

		graph_title EMC VNX 5300 Sum of Outstanding Requests

		graph_vlabel Requests

		graph_args --base 1000

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF 

			${LUN}_outstandsum.label $LUN

			${LUN}_outstandsum.type COUNTER

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_nonzeroreq

		graph_category disk

		graph_title EMC VNX 5300 Non-Zero Request Count Arrivals

		graph_vlabel Count Arrivals

		graph_args --base 1000

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF

			${LUN}_nonzeroreq.label $LUN

			${LUN}_nonzeroreq.type COUNTER

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_trespasses

		graph_category disk

		graph_title EMC VNX 5300 Trespasses

		graph_vlabel Trespasses

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF

			${LUN}_implic_tr.label ${LUN} Implicit Trespasses

			${LUN}_explic_tr.label ${LUN} Explicit Trespasses

		EOF

	done <<< "$LUNLIST"

	cat <<-EOF

		multigraph emc_vnx_block_queue

		graph_category disk

		graph_title EMC VNX 5300 Counted Block Queue Length

		graph_vlabel Length

	EOF

	while read -r LUN ; do

		LUN="$(clean_fieldname "$LUN")"

		cat <<-EOF

			${LUN}_busyticks_spa.label ${LUN}

			${LUN}_busyticks_spa.graph no

			${LUN}_busyticks_spa.type COUNTER

			${LUN}_idleticks_spa.label ${LUN}

			${LUN}_idleticks_spa.graph no

			${LUN}_idleticks_spa.type COUNTER

			${LUN}_busyticks_spb.label ${LUN}

			${LUN}_busyticks_spb.graph no

			${LUN}_busyticks_spb.type COUNTER

			${LUN}_idleticks_spb.label ${LUN}

			${LUN}_idleticks_spb.graph no

			${LUN}_idleticks_spb.type COUNTER

			${LUN}_outstandsum.label ${LUN}

			${LUN}_outstandsum.graph no

			${LUN}_outstandsum.type COUNTER

			${LUN}_nonzeroreq.label ${LUN}

			${LUN}_nonzeroreq.graph no

			${LUN}_nonzeroreq.type COUNTER

			${LUN}_readreq.label ${LUN}

			${LUN}_readreq.graph no

			${LUN}_readreq.type COUNTER

			${LUN}_writereq.label ${LUN}

			${LUN}_writereq.graph no

			${LUN}_writereq.type COUNTER

		EOF

# Queue Length SPA = ((Sum of Outstanding Requests SPA - NonZero Request Count Arrivals SPA / 2)/(Host Read Requests SPA + Host Write Requests SPA))*

# (Busy Ticks SPA/(Busy Ticks SPA + Idle Ticks SPA)

# We count together SPA and SPB, although it is not fully corrext

		cat <<-EOF

			${LUN}_ql_l_a.label ${LUN} Queue Length SPA

			${LUN}_ql_l_a.cdef ${LUN}_outstandsum,${LUN}_nonzeroreq,2,/,-,${LUN}_readreq,${LUN}_writereq,+,/,${LUN}_busyticks_spa,*,${LUN}_busyticks_spa,${LUN}_idleticks_spa,+,/

			${LUN}_ql_l_b.label ${LUN} Queue Length SPB

			${LUN}_ql_l_b.cdef ${LUN}_outstandsum,${LUN}_nonzeroreq,2,/,-,${LUN}_readreq,${LUN}_writereq,+,/,${LUN}_busyticks_spb,*,${LUN}_busyticks_spb,${LUN}_idleticks_spb,+,/

		EOF

	done <<< "$LUNLIST"

exit 0

fi

#Preparing big complex command to SP's to have most work done remotely.

BIGSSHCMD="$SSH"

while read -r LUN ; do

		FILTERLUN="$(clean_fieldname "$LUN")"

	BIGSSHCMD+=$(run_remote_navicli "lun -list -name $LUN -perfData | 

		sed -ne 's/^Blocks Read\:\ */${FILTERLUN}_read.value /p; 

		s/^Blocks Written\:\ */${FILTERLUN}_write.value /p;

		s/Read Requests\:\ */${FILTERLUN}_readreq.value /p;

		s/Write Requests\:\ */${FILTERLUN}_writereq.value /p;

		s/Busy Ticks SP A\:\ */${FILTERLUN}_busyticks_spa.value /p;

		s/Idle Ticks SP A\:\ */${FILTERLUN}_idleticks_spa.value /p;

		s/Busy Ticks SP B\:\ */${FILTERLUN}_busyticks_spb.value /p;

		s/Idle Ticks SP B\:\ */${FILTERLUN}_idleticks_spb.value /p;

		s/Sum of Outstanding Requests\:\ */${FILTERLUN}_outstandsum.value /p;

		s/Non-Zero Request Count Arrivals\:\ */${FILTERLUN}_nonzeroreq.value /p;

		s/Implicit Trespasses\:\ */${FILTERLUN}_implic_tr.value /p;

		s/Explicit Trespasses\:\ */${FILTERLUN}_explic_tr.value /p;

		' ;")

done <<< "$LUNLIST"

ANSWER="$($BIGSSHCMD)"

echo "multigraph emc_vnx_block_blocks"

echo "$ANSWER" | grep "read\.\|write\."

echo -e "\nmultigraph emc_vnx_block_req"

echo "$ANSWER" | grep "readreq\.\|writereq\."

echo -e "\nmultigraph emc_vnx_block_ticks"

while read -r LUN ; do

	LUN="$(clean_fieldname "$LUN")"

	echo "${LUN}_load_spa.value 0"

	echo "${LUN}_load_spb.value 0"

done <<< "$LUNLIST"

echo "$ANSWER" | grep "busyticks_spa\.\|idleticks_spa\."

echo "$ANSWER" | grep "busyticks_spb\.\|idleticks_spb\."

echo -e "\nmultigraph emc_vnx_block_outstanding"

echo "$ANSWER" | grep "outstandsum\."

echo -e "\nmultigraph emc_vnx_block_nonzeroreq"

echo "$ANSWER" | grep "nonzeroreq\."

echo -e "\nmultigraph emc_vnx_block_trespasses"

echo "$ANSWER" | grep "implic_tr\.\|explic_tr\."

echo -e "\nmultigraph emc_vnx_block_queue"

# Queue Length

	echo "$ANSWER" | grep "busyticks"

	echo "$ANSWER" | grep "idleticks."

	echo "$ANSWER" | grep "outstandsum\."

	echo "$ANSWER" | grep "nonzeroreq\."

	echo "$ANSWER" | grep "readreq\."

	echo "$ANSWER" | grep "writereq\."

while read -r LUN ; do

	LUN="$(clean_fieldname "$LUN")"

	echo "${LUN}_ql_l_a.value 0 "

	echo "${LUN}_ql_l_b.value 0 "

done <<< "$LUNLIST"

exit 0