Using Grafana/Prometheus/snmpexporter to monitor CPU/bandwidth of Cisco interfaces
The SNMP exporter will collect the SNMP information from Cisco/Juniper switch by pull method and store in Prometheus
The Grafana will dislay the information connecting to Prometheus
wget https://github.com/prometheus/prometheus/releases/download/v2.15.2/prometheus-2.15.2.linux-amd64.tar.gz
mkdir /home/prometheus
tar -xvf prometheus-2.15.2.linux-amd64.tar.gz
wget https://github.com/prometheus/snmp_exporter/releases/download/v0.16.1/snmp_exporter-0.16.1.linux-amd64.tar.gz
mkdir /home/prometheus/snmp_exporter
tar -xvf snmp_exporter-0.16.1.linux-amd64.tar.gz
We use 02 jobs: one snmp for Cisco switch and snmpj for Juniper one. snmp will use module ciscosw (SNMP exporter) snmpj use junipersw (SNMP expoter module)
The - targets: describes the host list of the monitor switches in your local /etc/hosts
replacement locahost:9116 is the IP and port you will connect by http. You can replace localhost by your dedicated IP address
# Global config
global:
scrape_interval: 240s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 240s # Evaluate rules every 15 seconds. The default is every 1 minute.
scrape_timeout: 120s # scrape_timeout is set to the global default (10s).
# A scrape configuration containing exactly one endpoint to scrape:# Here it's Prometheus itself.
scrape_configs:
- job_name: 'snmp'
static_configs:
- targets: ['cisco1']
- targets: ['cisco2']
metrics_path: /snmp
params:
module: ['ciscosw']
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: localhost:9116
- job_name: 'snmpj'
static_configs:
- targets: ['juniper1']
metrics_path: /snmp
params:
module: ['junipersw']
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: localhost:9116
./prometheus --config.file prometheus.yml &
Add the ciscosw and junipersw part for Input and Output and CPU bandwidth monitor. For the others, keep it for the same. They are SNMP walk for other products.
Please note that you have to create a SNMP community at Cisco/Juniper switch. As below the community added is audit
Cisco uses SNMP OID 1.3.6.1.2.1.31.1.1.1.6 to return a Input bandwidth in octets of an interface. Meanwhile, Juniper uses SNMP OID 1.3.6.1.2.1.2.2.1.10 to return a Input bandwidth in octets of an interface
ciscosw:
version: 2
auth:
community: audit
walk:
- 1.3.6.1.2.1.2.2.1
- 1.3.6.1.2.1.2.2.2
- 1.3.6.1.2.1.2
- 1.3.6.1.2.1.31.1
- 1.3.6.1.2.1.31.1.1.1
- 1.3.6.1.4.1.9.9.109.1.1.1.1
metrics:
- name: ifIndex
oid: 1.3.6.1.2.1.2.2.1.1
type: gauge
help: A unique value, greater than zero, for each interface - 1.3.6.1.2.1.2.2.1.1
indexes:
- labelname: ifIndex
type: gauge
- name: ifDescr
oid: 1.3.6.1.2.1.2.2.1.2
type: DisplayString
help: A textual string containing information about the interface - 1.3.6.1.2.1.2.2.1.2
indexes:
- labelname: ifIndex
type: gauge
- name: sysUpTime
oid: 1.3.6.1.2.1.1.3
type: gauge
- name: BWInOctets
oid: 1.3.6.1.2.1.31.1.1.1.6
type: gauge
indexes:
- labelname: interface
type: gauge
lookups:
- labels: [interface]
oid: 1.3.6.1.2.1.2.2.1.2
labelname: interface
type: DisplayString
- labels: [interface]
oid: 1.3.6.1.2.1.31.1.1.1.18
labelname: alias
type: DisplayString
- name: BWOutOctets
oid: 1.3.6.1.2.1.31.1.1.1.10
type: gauge
indexes:
- labelname: interface
type: gauge
lookups:
- labels: [interface]
oid: 1.3.6.1.2.1.2.2.1.2
labelname: interface
type: DisplayString
- labels: [interface]
oid: 1.3.6.1.2.1.31.1.1.1.18
labelname: alias
type: DisplayString
- name: ifAlias
oid: 1.3.6.1.2.1.31.1.1.1.18
type: DisplayString
help: This object is an 'alias' name for the interface as specified by a network
manager, and provides a non-volatile 'handle' for the interface - 1.3.6.1.2.1.31.1.1.1.18
indexes:
- labelname: ifIndex
type: gauge
- name: cpmCPUTotal
oid: 1.3.6.1.4.1.9.9.109.1.1.1.1.4.1
type: gauge
help: The overall CPU busy percentage
junipersw:
version: 2
auth:
community: audit
max_repetitions: 1 # How many objects to request with GET/GETBULK, defaults to 25.
# May need to be reduced for buggy devices.
retries: 5 # How many times to retry a failed request, defaults to 3.
timeout: 240s # Timeout for each walk, defaults to 10s.
walk:
- 1.3.6.1.2.1.2.2.1.1
- 1.3.6.1.2.1.2.2.1.2
- 1.3.6.1.2.1.2.2.1.10
- 1.3.6.1.2.1.2.2.1.16
- 1.3.6.1.2.1.31.1.1.1.18
- 1.3.6.1.4.1.2636.3.1.13.1.8
metrics:
- name: ifIndex
oid: 1.3.6.1.2.1.2.2.1.1
type: gauge
help: A unique value, greater than zero, for each interface - 1.3.6.1.2.1.2.2.1.1
indexes:
- labelname: ifIndex
type: gauge
- name: ifDescr
oid: 1.3.6.1.2.1.2.2.1.2
type: DisplayString
help: A textual string containing information about the interface - 1.3.6.1.2.1.2.2.1.2
indexes:
- labelname: ifIndex
type: gauge
- name: JBWInOctets
oid: 1.3.6.1.2.1.2.2.1.10
type: gauge
indexes:
- labelname: interface
type: gauge
lookups:
- labels: [interface]
oid: 1.3.6.1.2.1.2.2.1.2
labelname: interface
type: DisplayString
- labels: [interface]
oid: 1.3.6.1.2.1.31.1.1.1.18
labelname: alias
type: DisplayString
- name: JBWOutOctets
oid: 1.3.6.1.2.1.2.2.1.16
type: gauge
indexes:
- labelname: interface
type: gauge
lookups:
- labels: [interface]
oid: 1.3.6.1.2.1.2.2.1.2
labelname: interface
type: DisplayString
- labels: [interface]
oid: 1.3.6.1.2.1.31.1.1.1.18
labelname: alias
type: DisplayString
- name: ifAlias
oid: 1.3.6.1.2.1.31.1.1.1.18
type: DisplayString
help: This object is an 'alias' name for the interface as specified by a network
manager, and provides a non-volatile 'handle' for the interface - 1.3.6.1.2.1.31.1.1.1.18
indexes:
- labelname: ifIndex
type: gauge
- name: cpmCPUTotal
oid: 1.3.6.1.4.1.2636.3.1.13.1.8.9.1.0.0
type: gauge
help: The overall CPU busy percentage
./snmp_exporter &
The command below will return the InputBandwith in octets of each interface
snmpbulkwalk -v 2c -c audit -On cisco1 1.3.6.1.2.1.31.1.1.1.6
snmpbulkwalk -v 2c -c audit -On cisco1 1.3.6.1.2.1.31.1.1.1.6
.1.3.6.1.2.1.31.1.1.1.6.2 = Counter64: 221761800940631
.1.3.6.1.2.1.31.1.1.1.6.3 = Counter64: 240324462313013
.1.3.6.1.2.1.31.1.1.1.6.4 = Counter64: 201557378805616
.1.3.6.1.2.1.31.1.1.1.6.5 = Counter64: 177676708472093
.1.3.6.1.2.1.31.1.1.1.6.6 = Counter64: 0
.1.3.6.1.2.1.31.1.1.1.6.7 = Counter64: 0
.1.3.6.1.2.1.31.1.1.1.6.8 = Counter64: 0
.1.3.6.1.2.1.31.1.1.1.6.9 = Counter64: 44333199794
.1.3.6.1.2.1.31.1.1.1.6.10 = Counter64: 0
.1.3.6.1.2.1.31.1.1.1.6.11 = Counter64: 0
.1.3.6.1.2.1.31.1.1.1.6.12 = Counter64: 119898664568633
.1.3.6.1.2.1.31.1.1.1.6.13 = Counter64: 119780222545415
.1.3.6.1.2.1.31.1.1.1.6.14 = Counter64: 378268519621369
The command below will return the CPU of mentioned Cisco switches
snmpbulkwalk -v 2c -c audit -On cisco1 1.3.6.1.4.1.9.9.109.1.1.1.1.4.1
snmpbulkwalk -v 2c -c audit -On cisco1 1.3.6.1.4.1.9.9.109.1.1.1.1.4.1
.1.3.6.1.4.1.9.9.109.1.1.1.1.4.1 = Gauge32: 19 **
wget https://dl.grafana.com/oss/release/grafana-6.0.0-beta2.x86_64.rpm
yum localinstall grafana-6.0.0-beta2.x86_64.rpm
Go to Create --> Data Source --> Input the name and URL of the Prometheus hosts
Go to Dashboard setting
Set the varibles $device, $interface, $ifindex
Go to Create --> New Dashboard --> Add Query
Choose the Prometheus for Query
Add metrics
irate(BWOutOctets{job='snmp',instance='$device',interface=~'$interface'}[10m])*8/1000/1000
It display the change interval in 10 minutes, because the rate is in 8-bit octets, so we multiply by 8 for bits and divide to 1.000.000 for Mbps
Please do the same BWInOctets and Juniper switch :-)
For CPU add metrics
cpmCPUTotal{instance=~'$device',job="snmp"}
