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--- сервис_prometheus [2021/04/20 06:49]
val
+++ сервис_prometheus [2023/10/12 16:54]
val [Сервис Prometheus]
@@ Line 4: / Line 4: @@
   * [[https://habr.com/ru/company/southbridge/blog/455290/|Полное руководство по Prometheus в 2019 году]]
   * [[https://www.shellhacks.com/ru/prometheus-delete-time-series-metrics/|Prometheus: Удаление Метрик Временных Рядов]]
+  * [[https://habr.com/ru/companies/tochka/articles/683608/|Человеческим языком про метрики]]
+  * [[https://selectel.ru/blog/tutorials/monitoring-in-k8s-with-prometheus/|Мониторинг в K8s с помощью Prometheus]]
-===== Установка в Debian 10 =====
+===== Установка в Debian/Ubuntu =====
-  * [[Сервис MTA#Установка и настройка MTA на обработку почты домена hostname]]
 <code>
 # apt install prometheus
+# less /etc/prometheus/prometheus.yml
+</code><code>
+...
+global:
+  scrape_interval:     15s
+...
 </code>
@@ Line 24: / Line 31: @@
   * [[http://server.corpX.un:9090/targets]]
+  * [[http://server:9090/classic/targets]]
   * [[http://192.168.X.10:9090/metrics]]
   * [[http://10.5.N.100+X:9090/graph]]
@@ Line 36: / Line 44: @@
   * [[https://www.digitalocean.com/community/tutorials/how-to-use-alertmanager-and-blackbox-exporter-to-monitor-your-web-server-on-ubuntu-16-04|How To Use Alertmanager And Blackbox Exporter To Monitor Your Web Server On Ubuntu 16.04]]
   * [[https://awesome-prometheus-alerts.grep.to/|Awesome Prometheus alerts]]
+  * [[Сервис MTA#Установка и настройка MTA на обработку почты домена hostname]]
 <code>
@@ Line 47: / Line 57: @@
   smtp_from: 'prometheus@server.corpX.un'
   smtp_require_tls: false
+#  smtp_auth_username: 'alertmanager'
+#  smtp_auth_password: 'password'
 ...
   # A default receiver
@@ Line 59: / Line 71: @@
 ...
 </code><code>
+# service prometheus-alertmanager restart
 # cat /etc/prometheus/first_rules.yml
 </code><code>
@@ Line 82: / Line 96: @@
   - alert: CriticalTraffic
-    expr: rate(if_in_octets{instance="router"}[1m])>125000
+    expr: rate(ifInOctets{instance="router"}[1m])>125000
     for: 1m
     labels:
@@ Line 114: / Line 128: @@
 ...
 </code>
+  * [[http://192.168.X.10:9090/alerts]]
 ===== Exporters =====
 ==== prometheus-node-exporter ====
-  * В Debian ставится как зависимость к пакету prometheus и добавлен в конфигурацию
+  * В Debian/Ubuntu ставится как зависимость к пакету prometheus и добавлен в конфигурацию
   * [[http://server.corpX.un:9100/metrics]]
@@ Line 129: / Line 145: @@
 /dev/mapper/debian--vg-root  15662008 1877488  12969212  13% /
 ...
+# TYPE node_filesystem_free_bytes gauge
 node_filesystem_free_bytes{device="/dev/mapper/debian--vg-root",fstype="ext4",mountpoint="/"} = (15662008 - 1877488) * 1024
 </code>
@@ Line 135: / Line 151: @@
 == node_network_receive_bytes_total ==
 <code>
-$ cat /sys/class/net/eth1/statistics/rx_bytes
+$ cat /sys/class/net/eth0/statistics/rx_bytes
+  или
+$ cat /sys/class/net/bond0/statistics/rx_bytes
-node_network_receive_bytes_total{device="eth1"}
+# TYPE node_network_receive_bytes_total counter
+node_network_receive_bytes_total{device="bond0"}
 </code>
@@ Line 156: / Line 175: @@
 *rate(node_network_receive_bytes_total[1m])
-*rate(node_network_receive_bytes_total{device="eth1"}[1m])
+*rate(node_network_receive_bytes_total{device="bond0"}[1m])
-*rate(node_network_receive_bytes_total{device="eth1",instance="localhost:9100",job="node"}[1m])
+*rate(node_network_receive_bytes_total{device="eth0",instance="localhost:9100",job="node"}[1m])
 </code>
@@ Line 186: / Line 205: @@
 # cat /etc/prometheus/prometheus.yml
 </code><code>
+...
   - job_name: check_http
     metrics_path: /probe
@@ Line 192: / Line 212: @@
     static_configs:
       - targets:
-        - http://val.bmstu.ru
+        - https://google.com
         - https://ya.ru
     relabel_configs:
@@ Line 200: / Line 220: @@
         target_label: instance
       - target_label: __address__
-        replacement: 127.0.0.1:9115
+        replacement: localhost:9115
   - job_name: check_ssh
@@ Line 217: / Line 237: @@
         target_label: instance
       - target_label: __address__
-        replacement: 127.0.0.1:9115
+        replacement: localhost:9115
 </code>
@@ Line 263: / Line 283: @@
 </code><code>
 # cat /etc/prometheus/switchs.yml
+</code><code>
 - targets:
   - switch1
@@ Line 277: / Line 298: @@
 <code>
 # apt install prometheus-snmp-exporter
+</code>
+=== Создание файла конфигурации "вручную" ===
+<code>
 # cat /etc/prometheus/snmp.yml
 </code><code>
@@ Line 290: / Line 315: @@
   - 1.3.6.1.2.1.2.2.1.2
   metrics:
-  - name: if_in_octets
+  - name: ifInOctets
     oid: 1.3.6.1.2.1.2.2.1.10
     type: counter
@@ Line 302: / Line 327: @@
       oid: 1.3.6.1.2.1.2.2.1.2
       type: DisplayString
-  - name: if_out_octets
+  - name: ifOutOctets
     oid: 1.3.6.1.2.1.2.2.1.16
     type: counter
@@ Line 314: / Line 339: @@
       oid: 1.3.6.1.2.1.2.2.1.2
       type: DisplayString
-</code><code>
+</code>
+=== Создание файла конфигурации через "generator" ===
+<code>
+# cp /usr/share/doc/prometheus-snmp-exporter/examples/generator.yml .
+# prometheus-snmp-generator generate
+# cp snmp.yml /etc/prometheus/snmp.yml
+</code>
+=== Примеры использования ===
+<code>
 # service prometheus-snmp-exporter restart
+</code>
+  * [[http://server.corpX.un:9116/]]
+<code>
 # curl --noproxy 127.0.0.1 'http://127.0.0.1:9116/snmp?target=router&module=snmp_in_out_octets'
+  или
+# curl 'http://127.0.0.1:9116/snmp?target=router'
 </code><code>
 # cat /etc/prometheus/prometheus.yml
@@ Line 327: / Line 372: @@
         - router
     metrics_path: /snmp
-    params:
+    params:                               # no need
-      module: [snmp_in_out_octets]
+      module: [snmp_in_out_octets]        # if if_mib
     relabel_configs:
       - source_labels: [__address__]
@@ Line 335: / Line 380: @@
         target_label: instance
       - target_label: __address__
-        replacement: server:9116
+        replacement: localhost:9116
 </code>
@@ Line 341: / Line 386: @@
 <code>
-rate(if_in_octets{ifDescr="FastEthernet1/1",ifIndex="3",instance="router",job="snmp"}[1m])
+rate(ifInOctets{ifDescr="FastEthernet0/0",ifIndex="1",instance="router",job="snmp"}[1m])
+  или
+rate(ifOutOctets{ifIndex="5",instance="router",job="snmp"}[1m])
-*rate(if_in_octets{ifDescr="FastEthernet1/1",instance="router"}[1m])
+*rate(ifInOctets{ifDescr="FastEthernet0/0",instance="router"}[1m])
+  или
+*rate(ifOutOctets{ifDescr="Port-channel1",instance="router"}[1m])
 </code>
@@ Line 355: / Line 404: @@
 </code><code>
 ...
-  - job_name: 'Pushgateway'
+  - job_name: 'pushgateway'
     honor_labels: true
     static_configs:
@@ Line 383: / Line 432: @@
 </code><code>
 ip_dhcp_binding{dhcp_server="router",job="cisco_dhcp",net="192.168"}
+</code><code>
+# crontab -l
+</code><code>
+* * * * * /root/ip_dhcp_binding.sh
 </code>

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