snmp笔记
参考: 我是参考这个安装的
https://blog.csdn.net/sinat_21302587/article/details/75127133
https://www.cnblogs.com/alanjl/p/11685064.html
在Ubuntu 14.04上配置SNMPv3
https://www.linuxidc.com/Linux/2014-10/108511.htm
点击查看代码
k8s下载configmap
Wget http://k8s-yaml.qytang.com/snmp-exporter/snmp.yml
kubectl create configmap snmp-config --from-file=snmp.yml -n monitoring
应用资源配置清单
kubectl apply -f http://k8s-yaml.qytang.com/snmp-exporter/dp.yaml
kubectl apply -f http://k8s-yaml.qytang.com/snmp-exporter/svc.yaml
kubectl apply -f http://k8s-yaml.qytang.com/snmp-exporter/ingress.yaml
配置DNS解析(dnsca)
cat > /var/named/qytang.com.zone<<'EOF'
$ORIGIN gytang.com.
$TTL 600 ; 10 minutes
@ IN SOA dnsca.qytang.com. dnsadmin.qytang.com. (
2020090906 ; serial
10800 ; refresh (3 hours)
900 ; retry (15 minutes)
604800 ; expire (1 week)
86400 ; minimum (1 day)
)
NS dnsca.qytang.com.
$TTL 60 ; 1 minute
dnsca A 10.1.1.219
harbor A 10.1.1.220
k8s-yaml A 10.1.1.219
prometheus.yml的snmp_exporter配置
- job_name: snmp
scrape_interval: 10s
static_configs:
- targets:
- 10.1.1.215 #交换机IP地址
- 10.1.1.216 #交换机工P地址
metrics_path: /snmp
params:
module: [cisco_mib]
relabel_configs:
- source_labels: [__address_]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: snmp-exporter.monitoring:9116 # snmp_exporter服务IP地址
安装依赖模块
yum install -y epel-release
yum group install -y "Development Tools"
yum install -y wget net-snmp net-snmp-utils net-snmp-libs net-snmp-devel golang p7zip*
测试SNMP
snmpwalk -v2c -c tcpipro 10.1.1.216 .1
git snmp_exporter
cd /
git clone https://github.com/prometheus/snmp_exporter.git
go国内代理
export G0111MODULE=on
export GOPROXY=https://goproxy.cn,direct
build generator
go get github.com/prometheus/snmp_exporter/generator
cd snmp_exporter/generator/
go build
make mibs
generator generate生成generater配置操作 generator.yml
modules:
cisco_mib:
walk:
- sysUpTime
- interfaces
- ifXTable
- sysDescr
- sysName
- cpmCPUTotalTable
version:
auth:
community: tcpipro
lookups:
- source_indexes: [ifIndex]
lookup: 1.3.6.1.2.1.31.1.1.1.18 #ifAlias
- source_indexes: [ifIndex]
# Use OID to avoid conflict with PaloAlto PAN-COMMON-MIB.
lookup: 1.3.6.1.2.1.2.2.1.2 # ifDescr
- source_indexes: [ifIndex]
# Use OID to avoid conflict with Netscaler NS-ROOT-MIB.
lookup: 1.3.6.1.2.1.31.1.1.1.1 # ifName
overrides:
ifAlias:
ignore: true # Lookup metric
ifDescr:
ignore: true # Lookup metric
ifName:
ignore: true # Lookup metric
ifType:
type: EnumAsInfo
产生snmp.yml
export MIBDIRS=/snmp_exporter/generator/mibs:/snmp_exporter/generator/mibs/cisco_v2
./generator generate
export MIBDIRS
export MIBDIRS=/root/go/pkg/mod/github.com/prometheus/snmp_exporter@v0.20.0/generator/mibs:/root/go/pkg/mod/github.com/prometheus/snmp_exporter@v0.20.0/generator/mibs/cisco_v2:
自定义启动snmp
nohup ./snmp_exporter --config.file=snmp.yml --web.listen-address=:9116 > default.log 2>&1 &
generator.yml 提供模块列表。最简单的模块只是一个名称和一组要遍历的 OID。
modules:
module_name: # The module name. You can have as many modules as you want.
walk: # List of OIDs to walk. Can also be SNMP object names or specific instances.
- 1.3.6.1.2.1.2 # Same as "interfaces"
- sysUpTime # Same as "1.3.6.1.2.1.1.3"
- 1.3.6.1.2.1.31.1.1.1.6.40 # Instance of "ifHCInOctets" with index "40"
version: 2 # SNMP version to use. Defaults to 2.
# 1 will use GETNEXT, 2 and 3 use GETBULK.
max_repetitions: 25 # How many objects to request with GET/GETBULK, defaults to 25.
# May need to be reduced for buggy devices.
retries: 3 # How many times to retry a failed request, defaults to 3.
timeout: 10s # Timeout for each walk, defaults to 10s.
auth:
# Community string is used with SNMP v1 and v2. Defaults to "public".
community: public
# v3 has different and more complex settings.
# Which are required depends on the security_level.
# The equivalent options on NetSNMP commands like snmpbulkwalk
# and snmpget are also listed. See snmpcmd(1).
username: user # Required, no default. -u option to NetSNMP.
security_level: noAuthNoPriv # Defaults to noAuthNoPriv. -l option to NetSNMP.
# Can be noAuthNoPriv, authNoPriv or authPriv.
password: pass # Has no default. Also known as authKey, -A option to NetSNMP.
# Required if security_level is authNoPriv or authPriv.
auth_protocol: MD5 # MD5 or SHA, defaults to MD5. -a option to NetSNMP.
# Used if security_level is authNoPriv or authPriv.
priv_protocol: DES # DES or AES, defaults to DES. -x option to NetSNMP.
# Used if security_level is authPriv.
priv_password: otherPass # Has no default. Also known as privKey, -X option to NetSNMP.
# Required if security_level is authPriv.
context_name: context # Has no default. -n option to NetSNMP.
# Required if context is configured on the device.
lookups: # Optional list of lookups to perform.
# The default for `keep_source_indexes` is false. Indexes must be unique for this option to be used.
# If the index of a table is bsnDot11EssIndex, usually that'd be the label
# on the resulting metrics from that table. Instead, use the index to
# lookup the bsnDot11EssSsid table entry and create a bsnDot11EssSsid label
# with that value.
- source_indexes: [bsnDot11EssIndex]
lookup: bsnDot11EssSsid
drop_source_indexes: false # If true, delete source index labels for this lookup.
# This avoids label clutter when the new index is unique.
overrides: # Allows for per-module overrides of bits of MIBs
metricName:
ignore: true # Drops the metric from the output.
regex_extracts:
Temp: # A new metric will be created appending this to the metricName to become metricNameTemp.
- regex: '(.*)' # Regex to extract a value from the returned SNMP walks's value.
value: '$1' # The result will be parsed as a float64, defaults to $1.
Status:
- regex: '.*Example'
value: '1'
- regex: '.*'
value: '0'
type: DisplayString # Override the metric type, possible types are:
# gauge: An integer with type gauge.
# counter: An integer with type counter.
# OctetString: A bit string, rendered as 0xff34.
# DateAndTime: An RFC 2579 DateAndTime byte sequence. If the device has no time zone data, UTC is used.
# DisplayString: An ASCII or UTF-8 string.
# PhysAddress48: A 48 bit MAC address, rendered as 00:01:02:03:04:ff.
# Float: A 32 bit floating-point value with type gauge.
# Double: A 64 bit floating-point value with type gauge.
# InetAddressIPv4: An IPv4 address, rendered as 1.2.3.4.
# InetAddressIPv6: An IPv6 address, rendered as 0102:0304:0506:0708:090A:0B0C:0D0E:0F10.
# InetAddress: An InetAddress per RFC 4001. Must be preceded by an InetAddressType.
# InetAddressMissingSize: An InetAddress that violates section 4.1 of RFC 4001 by
# not having the size in the index. Must be preceded by an InetAddressType.
# EnumAsInfo: An enum for which a single timeseries is created. Good for constant values.
# EnumAsStateSet: An enum with a time series per state. Good for variable low-cardinality enums.
参考:
https://blog.csdn.net/weixin_39172380/article/details/106812717
net-snmp服务参考
https://blog.csdn.net/zqtsx/article/details/25150821
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