SNMPにてダイナミックメモリー使用量をモニタリングする場合、CISCO-ENHANCED-MEMPOOL-MIB の以下の OID にてメモリー使用量を取得することができます。
CISCO-ENHANCED-MEMPOOL-MIB
- cempMemPoolType (1.3.6.1.4.1.9.9.221.1.1.1.1.2)
- cempMemPoolValid (1.3.6.1.4.1.9.9.221.1.1.1.1.6)
- cempMemPoolHCUsed (1.3.6.1.4.1.9.9.221.1.1.1.1.18)
- cempMemPoolHCFree (1.3.6.1.4.1.9.9.221.1.1.1.1.20)
上記 cempMemPoolHCUsed、cempMemPoolHCFree は、
それぞれアプリケーションによる使用中メモリー量、使用可能メモリー残量となっています。
------------------------------------------------------------
cempMemPoolHCUsed OBJECT-TYPE
SYNTAX CounterBasedGauge64
UNITS "bytes"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the number of bytes from the memory pool
that are currently in use by applications on the
physical entity. This object is a 64-bit version of
cempMemPoolUsed."
::= { cempMemPoolEntry 18 }
cempMemPoolHCFree OBJECT-TYPE
SYNTAX CounterBasedGauge64
UNITS "bytes"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the number of bytes from the memory pool
that are currently unused on the physical entity.
This object is a 64-bit version of cempMemPoolFree."
::= { cempMemPoolEntry 20 }
------------------------------------------------------------
以下、CRS にて Net-SNMP を使って各 CPU のメモリー使用量を取得するサンプルになります。
1) CPUのメモリープールリストを取得
cempMemPoolType が processMemory(2) であるメモリープールを取得する。
------------------------------------------------------------
# snmpwalk -v 2c -c private <A.B.C.D> cempMemPoolType | grep processor
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.2359704.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.7858209.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.10154515.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.134949328.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.156036026.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.185280579.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.198577469.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.1508476423.1 = INTEGER: processorMemory(2)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolType.1520228812.1 = INTEGER: processorMemory(2)
------------------------------------------------------------
2) メモリープールの状態確認
cempMemPoolValid が true(1) であるメモリープールのリストを取得する。
------------------------------------------------------------
# snmpwalk -v 2c -c private <A.B.C.D> cempMemPoolValid | egrep "(2359704|7858209|10154515|134949328|156036026|185280579|198577469|1508476423|1520228812)\.1"
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.2359704.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.7858209.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.10154515.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.134949328.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.156036026.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.185280579.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.198577469.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.1508476423.1 = INTEGER: true(1)
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolValid.1520228812.1 = INTEGER: true(1)
------------------------------------------------------------
3) メモリープールのメモリー使用量を取得する
------------------------------------------------------------
# snmpwalk -v 2c -c private <A.B.C.D> cempMemPoolHCUsed | egrep "(2359704|7858209|10154515|134949328|156036026|185280579|198577469|1508476423|1520228812)\.1"
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.2359704.1 = Counter64: 799978376 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.7858209.1 = Counter64: 1400254545 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.10154515.1 = Counter64: 774648712 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.134949328.1 = Counter64: 880235409 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.156036026.1 = Counter64: 1180606545 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.185280579.1 = Counter64: 869852049 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.198577469.1 = Counter64: 1070915665 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.1508476423.1 = Counter64: 453443664 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCUsed.1520228812.1 = Counter64: 423268432 bytes
------------------------------------------------------------
4) メモリープールの利用可能メモリー残量を取得する
------------------------------------------------------------
# snmpwalk -v 2c -c private <A.B.C.D> cempMemPoolHCFree | egrep "(2359704|7858209|10154515|134949328|156036026|185280579|198577469|1508476423|1520228812)\.1"
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.2359704.1 = Counter64: 1139101696 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.7858209.1 = Counter64: 2594459648 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.10154515.1 = Counter64: 1164431360 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.134949328.1 = Counter64: 3127975936 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.156036026.1 = Counter64: 2814107648 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.185280579.1 = Counter64: 3138359296 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.198577469.1 = Counter64: 2923798528 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.1508476423.1 = Counter64: 1394044928 bytes
CISCO-ENHANCED-MEMPOOL-MIB::cempMemPoolHCFree.1520228812.1 = Counter64: 1424220160 bytes
------------------------------------------------------------
上記 OID の index は {entPhysicalIndex, cempMemPoolIndex} であり、
各 CPU とのマッピングは ENTITY-MIB の entPhysicalName から取得できます。------------------------------------------------------------
# snmpwalk -v 2c -c private <A.B.C.D> entPhysicalName | egrep "(2359704|7858209|10154515|134949328|156036026|185280579|198577469|1508476423|1520228812)"
ENTITY-MIB::entPhysicalName.2359704 = STRING: 0/0/* - cpu
ENTITY-MIB::entPhysicalName.7858209 = STRING: 0/RP0/* - cpu
ENTITY-MIB::entPhysicalName.10154515 = STRING: 0/1/* - cpu
ENTITY-MIB::entPhysicalName.134949328 = STRING: 1/4/* - cpu0
ENTITY-MIB::entPhysicalName.156036026 = STRING: 1/RP0/* - cpu
ENTITY-MIB::entPhysicalName.185280579 = STRING: 1/4/* - cpu1
ENTITY-MIB::entPhysicalName.198577469 = STRING: 1/RP1/* - cpu
ENTITY-MIB::entPhysicalName.1508476423 = STRING: F0/SC0/* - cpu
ENTITY-MIB::entPhysicalName.1520228812 = STRING: F0/SC1/* - cpu
------------------------------------------------------------
上記結果をまとめた各 CPU のダイナミックメモリー使用量一覧は以下となります。
entPhysicalIndex | cempMemPoolIndex | entPhysicalName | cempMemPoolValid | cempMemPoolHCUsed | cempMemPoolHCFree |
|---|
2359704 | 1 | 0/0/* - cpu | true (1) | 799978376 (bytes)
| 1139101696 (bytes)
|
7858209 | 1 | 0/RP0/* - cpu | true
| 1400254545 | 2594459648 |
10154515 | 1 | 0/1/* - cpu | true | 774648712
| 1164431360 |
134949328 | 1 | 1/4/* - cpu0 | true | 880235409 | 3127975936 |
156036026 | 1 | 1/RP0/* - cpu | true | 1180606545 | 2814107648 |
185280579 | 1 | 1/4/* - cpu1 | true | 869852049 | 3138359296 |
198577469 | 1 | 1/RP1/* - cpu | true | 1070915665 | 2923798528 |
1508476423 | 1 | F0/SC0/* - cpu | true | 453443664 | 1394044928 |
1520228812 | 1 | F0/SC1/* - cpu | true | 423268432 | 1424220160 |
