Cacti/Bcache - Revision history

Jan at 21:33, 5 September 2016

2016-09-05T21:33:25Z

← Older revision		Revision as of 23:33, 5 September 2016
Line 27:		Line 27:
	}		}

	~~get_cache_ratio~~ () {		get_hitrate () {
	local ~~cache_ratio~~=""		local hitrate=""
	for dev in "${PATH}/${1}/bdev*/"; do		for dev in "${PATH}/${1}/bdev*/"; do
	local ~~hits~~=$(<${dev}/stats_${2}/~~cache_hits)~~		local dev_hr=$(<${dev}/stats_${2}/cache_hit_ratio)
	~~local misses=$(<${dev}/stats_${2}/cache_misses)~~		if [ -z ${hitrate} ]; then
	~~local dev_ratio=$(( 100 * ${hits} / (${hits} + ${misses}) )~~)		hitrate=${dev_hr}
	if [ -z ${~~cache_ratio~~} ]; then
	~~cache_ratio~~=${~~dev_ratio~~}
	fi		fi
	~~cache_ratio~~=$(( (${~~cache_ratio~~} + ${~~dev_ratio~~}) / 2 ))		hitrate=$(( (${hitrate} + ${dev_hr}) / 2 ))
	done		done
	eval ~~CACHE_RATIO_~~${2}=${~~cache_ratio~~}		eval HITRATE_${2}=${hitrate}
	}		}

	~~get_cache_request~~ () {		get_requests () {
	for dev in "${PATH}/${1}/bdev*/"; do		for dev in "${PATH}/${1}/bdev*/"; do
	local value=$(<${dev}/stats_five_minute/cache_${2})		local value=$(<${dev}/stats_five_minute/cache_${2})
	eval ~~CACHE_REQUEST_~~${2}=$(( $~~CACHE_REQUEST_~~${2} + ${value} ))		eval REQUEST_${2}=$(( $REQUEST_${2} + ${value} ))
	done		done
	}		}
Line 58:		Line 56:
	for cache in "${PATH}/*/"; do		for cache in "${PATH}/*/"; do
	uuid=$(/usr/bin/basename ${cache})		uuid=$(/usr/bin/basename ${cache})
			get_bypassed ${uuid}
	get_dirty_data ${uuid}		get_dirty_data ${uuid}
	~~get_cache_ratio~~ ${uuid} ~~five_minute~~		get_hitrate ${uuid} total
	~~get_cache_ratio~~ ${uuid} ~~hour~~		get_hitrate ${uuid} day
	~~get_cache_ratio~~ ${uuid} ~~day~~		get_hitrate ${uuid} hour
	~~get_cache_ratio~~ ${uuid} ~~total~~		get_hitrate ${uuid} five_minute
	~~get_cache_request~~ ${uuid} ~~hits~~		get_requests ${uuid} bypass_hits
	~~get_cache_request~~ ${uuid} ~~misses~~		get_requests ${uuid} bypass_misses
	~~get_cache_request~~ ${uuid} ~~bypass_hits~~		get_requests ${uuid} hits
	~~get_cache_request~~ ${uuid} ~~bypass_misses~~		get_requests ${uuid} misses
	~~get_cache_request~~ ${uuid} miss_collisions		get_requests ${uuid} miss_collisions
	~~get_cache_request~~ ${uuid} readaheads		get_requests ${uuid} readaheads
	~~get_bypassed ${uuid}~~
	done		done

	echo "~~dirty_data~~:${~~DIRTY_DATA~~} \		echo "bb:${BYPASSED}\
	~~ratio-5m~~:${~~CACHE_RATIO_five_minute~~} \		dd:${DIRTY_DATA}\
	~~ratio-1h~~:${~~CACHE_RATIO_hour~~} \		hr:${HITRATE_total}\
	~~ratio-1d~~:${~~CACHE_RATIO_day~~} \		hr_1d:${HITRATE_day}\
	~~ratio-total~~:${~~CACHE_RATIO_total~~} \		hr_1h:${HITRATE_hour}\
	~~request_hits~~:${~~CACHE_REQUEST_hits~~} \		hr_5m:${HITRATE_five_minute}\
	~~request_misses~~:${~~CACHE_REQUEST_misses~~} \		req_bh:${REQUEST_bypass_hits}\
	~~request_bypass_hits~~:${~~CACHE_REQUEST_bypass_hits~~} \		req_bm:${REQUEST_bypass_misses}\
	~~request_bypass_misses~~:${~~CACHE_REQUEST_bypass_misses~~} \		req_h:${REQUEST_hits}\
	~~request_miss_collisions~~:${~~CACHE_REQUEST_miss_collisions~~} \		req_m:${REQUEST_misses}\
	~~request_readaheads~~:${~~CACHE_REQUEST_readaheads~~} \		req_mc:${REQUEST_miss_collisions}\
	~~bypassed~~:${~~BYPASSED~~}"		req_ra:${REQUEST_readaheads}"

	exit 0		exit 0
Line 89:		Line 87:

	== Cacti Host ==		== Cacti Host ==
	'''/~~usr~~/~~share~~/cacti~~/resource~~/scripts/get_bcache.sh'''		'''/var/www/cacti/scripts/get_bcache.sh'''
	<pre>		<pre>
	#!/bin/bash		#!/bin/bash
Line 98:		Line 96:
	fi		fi

	snmptable -CH -Cf '#' -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| ~~cut~~ -~~d '~~#~~' -f5~~		snmptable -CH -Cf '#' -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| sed -n "s/.#bcache#.#0#$.*$#noError#/\1/p"

	</pre>		</pre>

Jan at 18:23, 5 September 2016

2016-09-05T18:23:40Z

← Older revision		Revision as of 20:23, 5 September 2016
Line 93:		Line 93:
	#!/bin/bash		#!/bin/bash

	if [ ${#} -ne 3 ]; then		if [ ${#} -ne 2 ]; then
	echo "Usage: $0 <host> <community>"		echo "Usage: $0 <host> <community>"
	exit 0		exit 0

Jan at 18:22, 5 September 2016

2016-09-05T18:22:14Z

← Older revision		Revision as of 20:22, 5 September 2016
Line 2:		Line 2:
	Add to your '''/etc/snmp/snmpd.conf'''		Add to your '''/etc/snmp/snmpd.conf'''
	<pre>		<pre>
	exec bcache /~~usr~~/~~bin~~/~~cacti-~~bcache.sh		exec bcache /etc/snmp/bcache.sh
	</pre>		</pre>

	Create '''/~~usr~~/~~bin~~/~~cacti-~~bcache.sh'''		Create '''/etc/snmp/bcache.sh'''
	<pre>		<pre>
	#!/bin/bash		#!/bin/bash

Jan at 17:07, 5 September 2016

2016-09-05T17:07:43Z

← Older revision		Revision as of 19:07, 5 September 2016
Line 98:		Line 98:
	fi		fi

	snmptable -CH -Cf '\|' -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| cut -d'\|' -f5		snmptable -CH -Cf '#' -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| cut -d '#' -f5
	</pre>		</pre>

Jan at 17:07, 5 September 2016

2016-09-05T17:07:01Z

← Older revision		Revision as of 19:07, 5 September 2016
Line 98:		Line 98:
	fi		fi

	snmptable -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| ~~sed~~ -~~n "s/\s[0~~-~~9]+\sbcache.\s0\s$.$\snoError/\1/p"~~		snmptable -CH -Cf '\|' -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 \| cut -d'\|' -f5
	</pre>		</pre>

Jan at 16:54, 5 September 2016

2016-09-05T16:54:03Z

@@ Line 9: / Line 9: @@
 #!/bin/bash
-PATH='/sys/fs/bcache/'
+PATH='/sys/fs/bcache'
 if [ ! -d ${PATH} ]; then
@@ Line 17: / Line 17: @@
 DIRTY_DATA=0
 get_dirty_data () {
-   local size=$(<${PATH}/${1}/bdev0/dirty_data)
+   for dev in "${PATH}/${1}/bdev*/"; do
-  DIRTY_DATA=$(/usr/bin/numfmt --from=iec ${size})
+    local size=$(<${dev}/dirty_data)
+}
-for dir in "${PATH}/*/"; do
+get_cache_ratio () {
-   uuid=$(/usr/bin/basename ${dir})
+  local cache_ratio=""
    get_dirty_data ${uuid}
 done
-echo "dirty_data:${DIRTY_DATA}"
+echo "dirty_data:${DIRTY_DATA} \
 exit 0

Jan at 15:25, 5 September 2016

2016-09-05T15:25:48Z

← Older revision		Revision as of 17:25, 5 September 2016
Line 1:		Line 1:
	== Host ~~using bcache~~ ==		== bcache Host ==
	Add to your '''/etc/snmp/snmpd.conf'''		Add to your '''/etc/snmp/snmpd.conf'''
	<pre>		<pre>
Line 33:		Line 33:
	</pre>		</pre>

	== Cacti ==		== Cacti Host ==
	'''/usr/share/cacti/resource/scripts/get_bcache.sh'''		'''/usr/share/cacti/resource/scripts/get_bcache.sh'''
	<pre>		<pre>

Jan: Created page with "== Host using bcache == Add to your '''/etc/snmp/snmpd.conf'''

 exec bcache /usr/bin/cacti-bcache.sh

Create '''/usr/bin/cacti-bcache.sh'''

 #!/bin/bash  PATH..."

2016-09-05T15:24:38Z

Created page with "== Host using bcache == Add to your '''/etc/snmp/snmpd.conf''' <pre> exec bcache /usr/bin/cacti-bcache.sh </pre> Create '''/usr/bin/cacti-bcache.sh''' <pre> #!/bin/bash PATH..."

New page

== Host using bcache ==
Add to your '''/etc/snmp/snmpd.conf'''
<pre>
exec bcache /usr/bin/cacti-bcache.sh
</pre>

Create '''/usr/bin/cacti-bcache.sh'''
<pre>
#!/bin/bash

PATH='/sys/fs/bcache/'

if [ ! -d ${PATH} ]; then
echo "Error: bcache not loaded"
exit 1
fi

DIRTY_DATA=0

get_dirty_data () {
local size=$(<${PATH}/${1}/bdev0/dirty_data)
DIRTY_DATA=$(/usr/bin/numfmt --from=iec ${size})
}

for dir in "${PATH}/*/"; do
uuid=$(/usr/bin/basename ${dir})
get_dirty_data ${uuid}
done

echo "dirty_data:${DIRTY_DATA}"

exit 0
</pre>

== Cacti ==
'''/usr/share/cacti/resource/scripts/get_bcache.sh'''
<pre>
#!/bin/bash

if [ ${#} -ne 3 ]; then
echo "Usage: $0 <host> <community>"
exit 0
fi

snmptable -c${2} -v1 ${1} .1.3.6.1.4.1.2021.8 | sed -n "s/\s*[0-9]+*\s*bcache.*\s*0\s*$.*$\s*noError/\1/p"
</pre>

=== Data Template ===
<pre>
tbc
</pre>