さて。
最初から、自宅のルータは YAMAHA にしておけば良かったんだ ということで、YAMAHA RTX830 に変更して安定運用を続けています。将来にわたっての安定運用のためには、監視が必要です。不可欠です。
わが家では、しれっと telegraf + influx + grafana で可視化 していましたから、RTX830 用に設定をせっせと探しました。が、しかし、Edgerouter ほど尖っていないにもかかわらず、サンプル設定ファイルは入手できず。仕方ないので、泣きながら telegraf の設定ファイルを作成しました。
yamaha Private MIBで詳細情報とれますが、ネットワーク利用状況を可視化するための基本情報は、ほとんど標準MIBで取得できます。Private MIBが必要なのは、CPU/MEM/uptimeなどあたりですね。ネットワークの情報だけならPrivate MIBなくとも設定可能です。
そんなわけで、使用状況を最大限に取得する設定ファイルができましたので、ここで公開します。
前提条件
- telegraf 導入・influxdb向け設定済 (動くこと)
- influxdb 導入・設定済
- grafana などの可視化ツールを入れておきましょう
- 今回の設定は ubuntu 20.04 Server で実施
tunnel または PP インタフェイスを利用している場合
なお、tunnelやPPのインタフェイスを利用している場合には、それぞれに応じて RTX830 側で次の設定をして該当のSNMPを取得できるようにします。わが家では tunnelを利用していますので、そちらのみ on にしています。
tunnel利用の場合
snmp yriftunneldisplayatmib2 on
yamaha: トンネルインタフェースの情報を MIB2 の範囲で表示するか否かの設定
PP利用の場合
snmp yrifppdisplayatmib2 on
yamaha: PP インタフェースの情報を MIB2 の範囲で表示するか否かの設定
拡張MIBの設定
YAMAHA の拡張MIBを取得して配置しておきます。
yamaha private MIB の配置
sudo tar -xvzf ~/yamaha-private-mib.tar.gz -C /usr/share/snmp/mibs/
なお、debian系だとPrivate MIB入れた後にエラーが出ます。そのままだと snmpwalk も telegraf の snmpも取得に失敗します。
debian/ubuntuの場合(だけ？)
Bad operator (INTEGER): At line 73 in /usr/share/snmp/mibs/ietf/SNMPv2-PDU
ので、修正されたファイルを入れておきましょう。
sudo wget http://pastebin.com/raw.php?i=p3QyuXzZ -O /usr/share/snmp/mibs/ietf/SNMPv2-PDU
参考情報
How to fix net-snmp / snmpwalk errors in Debian 7
SNMP MIBs on Ubuntu - error in MIBs
telegraf 用構成ファイル
ということで、これが完成した telegraf 用の定義ファイルです。
/etc/telegraf/telegraf.d/ へ配置して sudo systemctl ^Cstart telegraf.service すれば取得されます。
気をつけるポイントとしては、取得に時間がかかりますので、telegraf.conf の次の設定をしておくことを推奨します。interval 10s だとたくさんワーニングはきます。
telegraf.conf
[agent]
interval = "30s"
metric_batch_size = 5000
flush_jitter = "5s"
参考情報
took longer to collect than collection interval (10s)
snmp でどうにかできるのはこれでほぼすべてですが、どうしても NAT セッション数は取得できません。これは luaをうまく使って連携する必要がありますので、これはまた次回。
rtx830.conf
##
## SNMP Input Plugin
##
## YAMAHA RTX830
##
[[inputs.snmp]]
# List of agents to poll
agents = [ "<hostname|ip addr>[:port]" ]
# Polling interval
interval = "60s"
# Timeout for each SNMP query.
timeout = "30s"
# Number of retries to attempt within timeout.
retries = 3
# SNMP version, UAP only supports v1
version = 1
# SNMP community string.
community = "public"
# The GETBULK max-repetitions parameter
max_repetitions = 10
# Measurement name
name = "rtx830"
##
## Product Information
##
[[inputs.snmp.field]]
name = "productName"
oid = "YAMAHA-SMI::yamahaRT.6.5.0"
[[inputs.snmp.field]]
name = "firmware"
oid = "YAMAHA-SMI::yamahaRT.6.6.0"
[[inputs.snmp.field]]
name = "revision"
oid = "YAMAHA-RT-FIRMWARE::yrfRevision.0"
##
## System details
##
# System name (hostname)
[[inputs.snmp.field]]
name = "sysName"
oid = "SNMPv2-MIB::sysName.0"
is_tag = true
# System vendor OID
[[inputs.snmp.field]]
name = "sysObjectID"
oid = "SNMPv2-MIB::sysObjectID.0"
# System description
[[inputs.snmp.field]]
name = "sysDescr"
oid = "SNMPv2-MIB::sysDescr.0"
##
## System Details & Metrics
##
# System uptime
[[inputs.snmp.field]]
name = "sysUpTime"
oid = "YAMAHA-RT-FIRMWARE::yrfUpTime.0"
##
## CPU inventory
##
# CPU Table
[[inputs.snmp.table]]
name = "cpuTable"
inherit_tags = [ "sysName" ]
oid = "YAMAHA-RT-HARDWARE::yrhMultiCpuTable"
[[inputs.snmp.table.field]]
name = "cpuName"
oid = "YAMAHA-RT-HARDWARE::yrhMultiCpuName"
is_tag = true
##
## System Memory
##
# real/physical memory size
[[inputs.snmp.field]]
name = "memSize"
oid = "YAMAHA-RT-HARDWARE::yrhMemorySize.0"
# memory utilization
[[inputs.snmp.field]]
name = "memUtil"
oid = "YAMAHA-RT-HARDWARE::yrhMemoryUtil.0"
##
## Interfaces metrics
##
# Interface entity information table
[[inputs.snmp.table]]
name = "ifTable"
oid = "IF-MIB::ifTable"
inherit_tags = [ "sysName" ]
[[inputs.snmp.table.field]]
name = "ifName"
oid = "IF-MIB::ifName"
is_tag = true
[[inputs.snmp.table.field]]
name = "ifDescr"
oid = "IF-MIB::ifDescr"
is_tag = true
[[inputs.snmp.table]]
name = "ifXTable"
oid = "IF-MIB::ifXTable"
inherit_tags = [ "sysName" ]
[[inputs.snmp.table.field]]
name = "ifName"
oid = "IF-MIB::ifName"
is_tag = true
[[inputs.snmp.table.field]]
name = "ifDescr"
oid = "IF-MIB::ifDescr"
is_tag = true
##
## ICMP statictics
##
# The total number of ICMP messages which the entity received.
[[inputs.snmp.field]]
name = "icmpInMsgs"
oid = "RFC1213-MIB::icmpInMsgs.0"
# The number of ICMP messages which the entity received.
[[inputs.snmp.field]]
name = "icmpInErrors"
oid = "RFC1213-MIB::icmpInErrors.0"
# The number of ICMP Destination Unreachable messages received.
[[inputs.snmp.field]]
name = "icmpInDestUnreachs"
oid = "RFC1213-MIB::icmpInDestUnreachs.0"
# The number of ICMP Time Exceeded messages received.
[[inputs.snmp.field]]
name = "icmpInTimeExcds"
oid = "RFC1213-MIB::icmpInTimeExcds.0"
# The number of ICMP Parameter Problem messages received.
[[inputs.snmp.field]]
name = "icmpInParmProbs"
oid = "RFC1213-MIB::icmpInParmProbs.0"
# The number of ICMP Source Quench messages received.received
[[inputs.snmp.field]]
name = "icmpInSrcQuenchs"
oid = "RFC1213-MIB::icmpInSrcQuenchs.0"
# The number of ICMP Redirect messages received.
[[inputs.snmp.field]]
name = "icmpInRedirects"
oid = "RFC1213-MIB::icmpInRedirects.0"
# The number of ICMP Echo (request) messages received.
[[inputs.snmp.field]]
name = "icmpInEchos"
oid = "RFC1213-MIB::icmpInEchos.0"
# The number of ICMP Echo Reply messages received.
[[inputs.snmp.field]]
name = "icmpInEchoReps"
oid = "RFC1213-MIB::icmpInEchoReps.0"
# The number of ICMP Timestamp (request) messages received.
[[inputs.snmp.field]]
name = "icmpInTimestamps"
oid = "RFC1213-MIB::icmpInTimestamps.0"
# The number of ICMP Timestamp Reply messages received.
[[inputs.snmp.field]]
name = "icmpInTimestampReps"
oid = "RFC1213-MIB::icmpInTimestampReps.0"
# The number of ICMP Address Mask Request messages received.
[[inputs.snmp.field]]
name = "icmpInAddrMasks"
oid = "RFC1213-MIB::icmpInAddrMasks.0"
# The number of ICMP Address Mask Reply messages received.
[[inputs.snmp.field]]
name = "icmpInAddrMaskReps"
oid = "RFC1213-MIB::icmpInAddrMaskReps.0"
# The total number of ICMP messages which this entity attempted to send.
[[inputs.snmp.field]]
name = "icmpOutMsgs"
oid = "RFC1213-MIB::icmpOutMsgs.0"
# The number of ICMP messages which this entity did not send due to problems discovered within ICMP such as a lack of buffers
[[inputs.snmp.field]]
name = "icmpOutErrors"
oid = "RFC1213-MIB::icmpOutErrors.0"
# The number of ICMP Destination Unreachable messages sent
[[inputs.snmp.field]]
name = "icmpOutDestUnreachs"
oid = "RFC1213-MIB::icmpOutDestUnreachs.0"
# The number of ICMP Time Exceeded messages sent
[[inputs.snmp.field]]
name = "icmpOutTimeExcds"
oid = "RFC1213-MIB::icmpOutTimeExcds.0"
# The number of ICMP Parameter Problem messages sent
[[inputs.snmp.field]]
name = "icmpOutParmProbs"
oid = "RFC1213-MIB::icmpOutParmProbs.0"
# The number of ICMP Source Quench messages sent
[[inputs.snmp.field]]
name = "icmpOutSrcQuenchs"
oid = "RFC1213-MIB::icmpOutSrcQuenchs.0"
# The number of ICMP Redirect messages sent
[[inputs.snmp.field]]
name = "icmpOutRedirects"
oid = "RFC1213-MIB::icmpOutRedirects.0"
# The number of ICMP Echo (request) messages sent
[[inputs.snmp.field]]
name = "icmpOutEchos"
oid = "RFC1213-MIB::icmpOutEchos.0"
# The number of ICMP Echo Reply messages sent
[[inputs.snmp.field]]
name = "icmpOutEchoReps"
oid = "RFC1213-MIB::icmpOutEchoReps.0"
# The number of ICMP Timestamp (request) messages sent
[[inputs.snmp.field]]
name = "icmpOutTimestamps"
oid = "RFC1213-MIB::icmpOutTimestamps.0"
# The number of ICMP Timestamp Reply messages sent
[[inputs.snmp.field]]
name = "icmpOutTimestampReps"
oid = "RFC1213-MIB::icmpOutTimestampReps.0"
# The number of ICMP Address Mask Request messages sent
[[inputs.snmp.field]]
name = "icmpOutAddrMasks"
oid = "RFC1213-MIB::icmpOutAddrMasks.0"
# The number of ICMP Address Mask Reply messages sent
[[inputs.snmp.field]]
name = "icmpOutAddrMaskReps"
oid = "RFC1213-MIB::icmpOutAddrMaskReps.0"
##
## UDP statistics
##
# Datagrams delivered to app
[[inputs.snmp.field]]
name = "udpInDatagrams"
oid = "UDP-MIB::udpInDatagrams.0"
# Datagrams received with no app
[[inputs.snmp.field]]
name = "udpNoPorts"
oid = "UDP-MIB::udpNoPorts.0"
# Datagrams received with error
[[inputs.snmp.field]]
name = "udpInErrors"
oid = "UDP-MIB::udpInErrors.0"
# Datagrams sent
[[inputs.snmp.field]]
name = "udpOutDatagrams"
oid = "UDP-MIB::udpOutDatagrams.0"
##
## TCP statistics
##
# Number of CLOSED -> SYN-SENT transitions
[[inputs.snmp.field]]
name = "tcpActiveOpens"
oid = "TCP-MIB::tcpActiveOpens.0"
# Number of SYN-RCVD -> LISTEN transitions
[[inputs.snmp.field]]
name = "tcpPassiveOpens"
oid = "TCP-MIB::tcpPassiveOpens.0"
# Number of SYN-SENT/RCVD -> CLOSED transitions
[[inputs.snmp.field]]
name = "tcpAttemptFails"
oid = "TCP-MIB::tcpAttemptFails.0"
# Number of ESTABLISHED/CLOSE-WAIT -> CLOSED transitions
[[inputs.snmp.field]]
name = "tcpEstabResets"
oid = "TCP-MIB::tcpEstabResets.0"
# Number of ESTABLISHED or CLOSE-WAIT
[[inputs.snmp.field]]
name = "tcpCurrEstab"
oid = "TCP-MIB::tcpCurrEstab.0"
# Number of segments received
[[inputs.snmp.field]]
name = "tcpInSegs"
oid = "TCP-MIB::tcpInSegs.0"
# Number of segments sent
[[inputs.snmp.field]]
name = "tcpOutSegs"
oid = "TCP-MIB::tcpOutSegs.0"
# Number of segments retransmitted
[[inputs.snmp.field]]
name = "tcpRetransSegs"
oid = "TCP-MIB::tcpRetransSegs.0"
# Number of segments received with error
[[inputs.snmp.field]]
name = "tcpInErrs"
oid = "TCP-MIB::tcpInErrs.0"
# Number of segments sent w/RST
[[inputs.snmp.field]]
name = "tcpOutRsts"
oid = "TCP-MIB::tcpOutRsts.0"
##
## IP routing statistics
##
# Number of valid routing entries
[[inputs.snmp.field]]
name = "inetCidrRouteNumber"
oid = "IP-FORWARD-MIB::inetCidrRouteNumber.0"
# Number of valid entries discarded
[[inputs.snmp.field]]
name = "inetCidrRouteDiscards"
oid = "IP-FORWARD-MIB::inetCidrRouteDiscards.0"
# Number of valid forwarding entries
[[inputs.snmp.field]]
name = "ipForwardNumber"
oid = "IP-FORWARD-MIB::ipForwardNumber.0"
# Number of valid routes discarded
[[inputs.snmp.field]]
name = "ipRoutingDiscards"
oid = "RFC1213-MIB::ipRoutingDiscards.0"
# The indication of whether this entity is acting as an IP gateway in respect to the forwarding of datagrams received by, but not addressed to, this entity.
[[inputs.snmp.field]]
name = "ipForwarding"
oid = "RFC1213-MIB::ipForwarding.0"
# The default value inserted into the Time-To-Live field of the IP header of datagrams originated at this entity.
[[inputs.snmp.field]]
name = "ipDefaultTTL"
oid = "RFC1213-MIB::ipDefaultTTL.0"
# The total number of input datagrams received from interfaces, including those received in error.
[[inputs.snmp.field]]
name = "ipInReceives"
oid = "RFC1213-MIB::ipInReceives.0"
# The number of input datagrams discarded due to errors in their IP headers.
[[inputs.snmp.field]]
name = "ipInHdrErrors"
oid = "RFC1213-MIB::ipInHdrErrors.0"
# The number of input datagrams discarded because the IP address in their IP header's destination field was not a valid address to be received at this entity.
[[inputs.snmp.field]]
name = "ipInAddrErrors"
oid = "RFC1213-MIB::ipInAddrErrors.0"
# The number of input datagrams for which this entity was not their final IP destination.
[[inputs.snmp.field]]
name = "ipForwDatagrams"
oid = "RFC1213-MIB::ipForwDatagrams.0"
# The number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol.
[[inputs.snmp.field]]
name = "ipInUnknownProtos"
oid = "RFC1213-MIB::ipInUnknownProtos.0"
# The number of input IP datagrams for which no problems were encountered to prevent their continued processing, but which were discarded.
[[inputs.snmp.field]]
name = "ipInDiscards"
oid = "RFC1213-MIB::ipInDiscards.0"
# The total number of input datagrams successfully delivered to IP user-protocols (including ICMP)
[[inputs.snmp.field]]
name = "ipInDelivers"
oid = "RFC1213-MIB::ipInDelivers.0"
# The total number of IP datagrams which local IP user-protocols (including ICMP) supplied to IP in requests for transmission
[[inputs.snmp.field]]
name = "ipOutRequests"
oid = "RFC1213-MIB::ipOutRequests.0"
# The number of output IP datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded
[[inputs.snmp.field]]
name = "ipOutDiscards"
oid = "RFC1213-MIB::ipOutDiscards.0"
# The number of IP datagrams discarded because no route could be found to transmit them to their destination
[[inputs.snmp.field]]
name = "ipOutNoRoutes"
oid = "RFC1213-MIB::ipOutNoRoutes.0"
# The maximum number of seconds which received fragments are held while they are awaiting reassembly at this entity
[[inputs.snmp.field]]
name = "ipReasmTimeout"
oid = "RFC1213-MIB::ipReasmTimeout.0"
# The number of IP fragments received which needed to be reassembled at this entity
[[inputs.snmp.field]]
name = "ipReasmReqds"
oid = "RFC1213-MIB::ipReasmReqds.0"
# The number of IP datagrams successfully reassembled
[[inputs.snmp.field]]
name = "ipReasmOKs"
oid = "RFC1213-MIB::ipReasmOKs.0"
# The number of failures detected by the IP reassembly algorithm
[[inputs.snmp.field]]
name = "ipReasmFails"
oid = "RFC1213-MIB::ipReasmFails.0"
# The number of IP datagrams that have been successfully fragmented at this entity
[[inputs.snmp.field]]
name = "ipFragOKs"
oid = "RFC1213-MIB::ipFragOKs.0"
# The number of IP datagrams that have been discarded because they needed to be fragmented at this entity
[[inputs.snmp.field]]
name = "ipFragFails"
oid = "RFC1213-MIB::ipFragFails.0"
# The number of IP datagram fragments that have been generated as a result of fragmentation at this entity
[[inputs.snmp.field]]
name = "ipFragCreates"
oid = "RFC1213-MIB::ipFragCreates.0"
##
## SNMP metrics
##
# Number of SNMP messages received
[[inputs.snmp.field]]
name = "snmpInPkts"
oid = "SNMPv2-MIB::snmpInPkts.0"
# Number of SNMP Get-Request received
[[inputs.snmp.field]]
name = "snmpInGetRequests"
oid = "SNMPv2-MIB::snmpInGetRequests.0"
# Number of SNMP Get-Next received
[[inputs.snmp.field]]
name = "snmpInGetNexts"
oid = "SNMPv2-MIB::snmpInGetNexts.0"
# Number of SNMP objects requested
[[inputs.snmp.field]]
name = "snmpInTotalReqVars"
oid = "SNMPv2-MIB::snmpInTotalReqVars.0"
# Number of SNMP Get-Response received
[[inputs.snmp.field]]
name = "snmpInGetResponses"
oid = "SNMPv2-MIB::snmpInGetResponses.0"
# Number of SNMP messages sent
[[inputs.snmp.field]]
name = "snmpOutPkts"
oid = "SNMPv2-MIB::snmpOutPkts.0"
# Number of SNMP Get-Request sent
[[inputs.snmp.field]]
name = "snmpOutGetRequests"
oid = "SNMPv2-MIB::snmpOutGetRequests.0"
# Number of SNMP Get-Next sent
[[inputs.snmp.field]]
name = "snmpOutGetNexts"
oid = "SNMPv2-MIB::snmpOutGetNexts.0"
# Number of SNMP Get-Response sent
[[inputs.snmp.field]]
name = "snmpOutGetResponses"
oid = "SNMPv2-MIB::snmpOutGetResponses.0"
(参考) Grafana で目一杯表示してみると
