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k8s之prometheus部署node-exporter-v1.3.0_--collector.netdev.device-exclude=collector.netdev

作者：不正经 | 2024-04-07 12:44:10

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--collector.netdev.device-exclude=collector.netdev.device-exclude

相关链接

docker-hub链接：https://hub.docker.com/r/prom/node-exporter

node-exporter-yaml: https://github.com/bibinwilson/kubernetes-prometheus

Github链接：https://github.com/prometheus/node_exporter

部署

[root@k8s-master-1 prometheus]# cat node_exporter.yaml 
apiVersion: v1
kind: Namespace
metadata:
  name: kube-prometheus
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: kube-prometheus
  labels:
    name: node-exporter
spec:
  selector:
    matchLabels:
     name: node-exporter
  template:
    metadata:
      labels:
        name: node-exporter
    spec:
      tolerations:
      - key: "node-role.kubernetes.io/master"
        operator: "Exists"
        effect: "NoSchedule"
      hostPID: true
      hostIPC: true
      hostNetwork: true # hostNetwork hostIPC hostPID都为True时，表示这个Pod里的所有容器会直接使用宿主机的网络，直接与宿主机进行IPC（进程间通信通信，可以看到宿主机里正在运行的所有进程。
                        # 加入了hostNetwork:true会直接将我们的宿主机的9100端口映射出来，从而不需要创建service在我们的宿主机上就会有一个 9100的端口
      containers:
      - name: node-exporter
        image: prom/node-exporter:v1.3.0
        ports:
        - containerPort: 9100
        resources:
          requests:
            cpu: 0.15   # 这个容器运行至少需要0.15核cpu
        securityContext:
          privileged: true # 开启特权模式
        args:
        - --path.procfs=/host/proc    # 配置挂载宿主机（node节点）的路径
        - --path.sysfs=/host/sys      # 配置挂载宿主机（node节点）的路径
        - --path.rootfs=/host
        volumeMounts: 				# 将主机/dev /proc /sys 这些目录挂在到容器中，这是因为我们采集的很多节点数据都是通过这些文件来获取系统信息的。
        - name: dev
          mountPath: /host/dev
          readOnly: true
        - name: proc
          mountPath: /host/proc
          readOnly: true
        - name: sys
          mountPath: /host/sys
          readOnly: true
        - name: rootfs
          mountPath: /host
          readOnly: true
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: dev
        hostPath:
          path: /dev
      - name: sys
        hostPath:
          path: /sys
      - name: rootfs
        hostPath:
          path: /

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# 查看部署
# 查看部署
[root@k8s-master-1 node_exporter]# kubectl get pods -n kube-prometheus
NAME                  READY   STATUS    RESTARTS   AGE
node-exporter-24nt6   1/1     Running   0          41s
node-exporter-k67cx   1/1     Running   0          41s

# 获取CPU指标
# HELP 解释当前指标的含义，上面表示在每种模式下
# TYPE 说明当前指标的数据类型
[root@k8s-master-1 node_exporter]# curl -s http://localhost:9100/metrics | grep -i cpu | head -n 10
# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started.
# TYPE go_memstats_gc_cpu_fraction gauge
go_memstats_gc_cpu_fraction 0
# HELP node_cpu_guest_seconds_total Seconds the CPUs spent in guests (VMs) for each mode.
# TYPE node_cpu_guest_seconds_total counter
node_cpu_guest_seconds_total{cpu="0",mode="nice"} 0
node_cpu_guest_seconds_total{cpu="0",mode="user"} 0
node_cpu_guest_seconds_total{cpu="1",mode="nice"} 0
node_cpu_guest_seconds_total{cpu="1",mode="user"} 0
# HELP node_cpu_seconds_total Seconds the CPUs spent in each mode.

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node-exporter命令参数

[root@k8s-node-1 node_exporter-1.3.1.linux-amd64]# ./node_exporter -h
usage: node_exporter [<flags>]

Flags:
  -h, --help                     Show context-sensitive help (also try --help-long and --help-man).
      --collector.bcache.priorityStats  
                                 Expose expensive priority stats.
      --collector.cpu.guest      Enables metric node_cpu_guest_seconds_total
      --collector.cpu.info       Enables metric cpu_info
      --collector.cpu.info.flags-include=COLLECTOR.CPU.INFO.FLAGS-INCLUDE  
                                 Filter the `flags` field in cpuInfo with a value that must be a regular expression
      --collector.cpu.info.bugs-include=COLLECTOR.CPU.INFO.BUGS-INCLUDE  
                                 Filter the `bugs` field in cpuInfo with a value that must be a regular expression
      --collector.diskstats.ignored-devices="^(ram|loop|fd|(h|s|v|xv)d[a-z]|nvme\\d+n\\d+p)\\d+$"  
                                 Regexp of devices to ignore for diskstats.
      --collector.ethtool.device-include=COLLECTOR.ETHTOOL.DEVICE-INCLUDE  
                                 Regexp of ethtool devices to include (mutually exclusive to device-exclude).
      --collector.ethtool.device-exclude=COLLECTOR.ETHTOOL.DEVICE-EXCLUDE  
                                 Regexp of ethtool devices to exclude (mutually exclusive to device-include).
      --collector.ethtool.metrics-include=".*"  
                                 Regexp of ethtool stats to include.
      --collector.filesystem.mount-points-exclude="^/(dev|proc|run/credentials/.+|sys|var/lib/docker/.+)($|/)"  
                                 Regexp of mount points to exclude for filesystem collector.
      --collector.filesystem.fs-types-exclude="^(autofs|binfmt_misc|bpf|cgroup2?|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|iso9660|mqueue|nsfs|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|selinuxfs|squashfs|sysfs|tracefs)$"  
                                 Regexp of filesystem types to exclude for filesystem collector.
      --collector.ipvs.backend-labels="local_address,local_port,remote_address,remote_port,proto,local_mark"  
                                 Comma separated list for IPVS backend stats labels.
      --collector.netclass.ignored-devices="^$"  
                                 Regexp of net devices to ignore for netclass collector.
      --collector.netclass.ignore-invalid-speed  
                                 Ignore devices where the speed is invalid. This will be the default behavior in 2.x.
      --collector.netdev.device-include=COLLECTOR.NETDEV.DEVICE-INCLUDE  
                                 Regexp of net devices to include (mutually exclusive to device-exclude).
      --collector.netdev.device-exclude=COLLECTOR.NETDEV.DEVICE-EXCLUDE  
                                 Regexp of net devices to exclude (mutually exclusive to device-include).
      --collector.netdev.address-info  
                                 Collect address-info for every device
      --collector.netstat.fields="^(.*_(InErrors|InErrs)|Ip_Forwarding|Ip(6|Ext)_(InOctets|OutOctets)|Icmp6?_(InMsgs|OutMsgs)|TcpExt_(Listen.*|Syncookies.*|TCPSynRetrans|TCPTimeouts)|Tcp_(ActiveOpens|InSegs|OutSegs|OutRsts|PassiveOpens|RetransSegs|CurrEstab)|Udp6?_(InDatagrams|OutDatagrams|NoPorts|RcvbufErrors|SndbufErrors))$"  
                                 Regexp of fields to return for netstat collector.
      --collector.ntp.server="127.0.0.1"  
                                 NTP server to use for ntp collector
      --collector.ntp.protocol-version=4  
                                 NTP protocol version
      --collector.ntp.server-is-local  
                                 Certify that collector.ntp.server address is not a public ntp server
      --collector.ntp.ip-ttl=1   IP TTL to use while sending NTP query
      --collector.ntp.max-distance=3.46608s  
                                 Max accumulated distance to the root
      --collector.ntp.local-offset-tolerance=1ms  
                                 Offset between local clock and local ntpd time to tolerate
      --path.procfs="/proc"      procfs mountpoint.
      --path.sysfs="/sys"        sysfs mountpoint.
      --path.rootfs="/"          rootfs mountpoint.
      --collector.perf.cpus=""   List of CPUs from which perf metrics should be collected
      --collector.perf.tracepoint=COLLECTOR.PERF.TRACEPOINT ...  
                                 perf tracepoint that should be collected
      --collector.powersupply.ignored-supplies="^$"  
                                 Regexp of power supplies to ignore for powersupplyclass collector.
      --collector.qdisc.fixtures=""  
                                 test fixtures to use for qdisc collector end-to-end testing
      --collector.runit.servicedir="/etc/service"  
                                 Path to runit service directory.
      --collector.supervisord.url="http://localhost:9001/RPC2"  
                                 XML RPC endpoint.
      --collector.systemd.unit-include=".+"  
                                 Regexp of systemd units to include. Units must both match include and not match exclude to be included.
      --collector.systemd.unit-exclude=".+\\.(automount|device|mount|scope|slice)"  
                                 Regexp of systemd units to exclude. Units must both match include and not match exclude to be included.
      --collector.systemd.enable-task-metrics  
                                 Enables service unit tasks metrics unit_tasks_current and unit_tasks_max
      --collector.systemd.enable-restarts-metrics  
                                 Enables service unit metric service_restart_total
      --collector.systemd.enable-start-time-metrics  
                                 Enables service unit metric unit_start_time_seconds
      --collector.tapestats.ignored-devices="^$"  
                                 Regexp of devices to ignore for tapestats.
      --collector.textfile.directory=""  
                                 Directory to read text files with metrics from.
      --collector.vmstat.fields="^(oom_kill|pgpg|pswp|pg.*fault).*"  
                                 Regexp of fields to return for vmstat collector.
      --collector.wifi.fixtures=""  
                                 test fixtures to use for wifi collector metrics
      --collector.arp            Enable the arp collector (default: enabled).
      --collector.bcache         Enable the bcache collector (default: enabled).
      --collector.bonding        Enable the bonding collector (default: enabled).
      --collector.btrfs          Enable the btrfs collector (default: enabled).
      --collector.buddyinfo      Enable the buddyinfo collector (default: disabled).
      --collector.conntrack      Enable the conntrack collector (default: enabled).
      --collector.cpu            Enable the cpu collector (default: enabled).
      --collector.cpufreq        Enable the cpufreq collector (default: enabled).
      --collector.diskstats      Enable the diskstats collector (default: enabled).
      --collector.dmi            Enable the dmi collector (default: enabled).
      --collector.drbd           Enable the drbd collector (default: disabled).
      --collector.drm            Enable the drm collector (default: disabled).
      --collector.edac           Enable the edac collector (default: enabled).
      --collector.entropy        Enable the entropy collector (default: enabled).
      --collector.ethtool        Enable the ethtool collector (default: disabled).
      --collector.fibrechannel   Enable the fibrechannel collector (default: enabled).
      --collector.filefd         Enable the filefd collector (default: enabled).
      --collector.filesystem     Enable the filesystem collector (default: enabled).
      --collector.hwmon          Enable the hwmon collector (default: enabled).
      --collector.infiniband     Enable the infiniband collector (default: enabled).
      --collector.interrupts     Enable the interrupts collector (default: disabled).
      --collector.ipvs           Enable the ipvs collector (default: enabled).
      --collector.ksmd           Enable the ksmd collector (default: disabled).
      --collector.lnstat         Enable the lnstat collector (default: disabled).
      --collector.loadavg        Enable the loadavg collector (default: enabled).
      --collector.logind         Enable the logind collector (default: disabled).
      --collector.mdadm          Enable the mdadm collector (default: enabled).
      --collector.meminfo        Enable the meminfo collector (default: enabled).
      --collector.meminfo_numa   Enable the meminfo_numa collector (default: disabled).
      --collector.mountstats     Enable the mountstats collector (default: disabled).
      --collector.netclass       Enable the netclass collector (default: enabled).
      --collector.netdev         Enable the netdev collector (default: enabled).
      --collector.netstat        Enable the netstat collector (default: enabled).
      --collector.network_route  Enable the network_route collector (default: disabled).
      --collector.nfs            Enable the nfs collector (default: enabled).
      --collector.nfsd           Enable the nfsd collector (default: enabled).
      --collector.ntp            Enable the ntp collector (default: disabled).
      --collector.nvme           Enable the nvme collector (default: enabled).
      --collector.os             Enable the os collector (default: enabled).
      --collector.perf           Enable the perf collector (default: disabled).
      --collector.powersupplyclass  
                                 Enable the powersupplyclass collector (default: enabled).
      --collector.pressure       Enable the pressure collector (default: enabled).
      --collector.processes      Enable the processes collector (default: disabled).
      --collector.qdisc          Enable the qdisc collector (default: disabled).
      --collector.rapl           Enable the rapl collector (default: enabled).
      --collector.runit          Enable the runit collector (default: disabled).
      --collector.schedstat      Enable the schedstat collector (default: enabled).
      --collector.sockstat       Enable the sockstat collector (default: enabled).
      --collector.softnet        Enable the softnet collector (default: enabled).
      --collector.stat           Enable the stat collector (default: enabled).
      --collector.supervisord    Enable the supervisord collector (default: disabled).
      --collector.systemd        Enable the systemd collector (default: disabled).
      --collector.tapestats      Enable the tapestats collector (default: enabled).
      --collector.tcpstat        Enable the tcpstat collector (default: disabled).
      --collector.textfile       Enable the textfile collector (default: enabled).
      --collector.thermal_zone   Enable the thermal_zone collector (default: enabled).
      --collector.time           Enable the time collector (default: enabled).
      --collector.timex          Enable the timex collector (default: enabled).
      --collector.udp_queues     Enable the udp_queues collector (default: enabled).
      --collector.uname          Enable the uname collector (default: enabled).
      --collector.vmstat         Enable the vmstat collector (default: enabled).
      --collector.wifi           Enable the wifi collector (default: disabled).
      --collector.xfs            Enable the xfs collector (default: enabled).
      --collector.zfs            Enable the zfs collector (default: enabled).
      --collector.zoneinfo       Enable the zoneinfo collector (default: disabled).
      --web.listen-address=":9100"  
                                 Address on which to expose metrics and web interface.
      --web.telemetry-path="/metrics"  
                                 Path under which to expose metrics.
      --web.disable-exporter-metrics  
                                 Exclude metrics about the exporter itself (promhttp_*, process_*, go_*).
      --web.max-requests=40      Maximum number of parallel scrape requests. Use 0 to disable.
      --collector.disable-defaults  
                                 Set all collectors to disabled by default.
      --web.config=""            [EXPERIMENTAL] Path to config yaml file that can enable TLS or authentication.
      --log.level=info           Only log messages with the given severity or above. One of: [debug, info, warn, error]
      --log.format=logfmt        Output format of log messages. One of: [logfmt, json]
      --version                  Show application version.

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