prometheus init

DOCKER/PROMETHEUS/README.md

+[![logo](https://www.hongsnet.net/images/logo.gif)](https://www.hongsnet.net)
+
+# 개요
+
+Prometheus을 이용한 www.hongsnet.net Container를 모니터링 한다.
+
+# 구성
+
+![source_overview](./images/container-monitoring.png)
+
+> !참고 : Node 및 VM은 Zabbix에서 모니터링을 수행하기 때문에 node-exporter는 실행되지 않는다.
+
+
+- **k8s**
+
+> 현재 진행중
+
+
+- **Swarm**
+
+구성은 Docker Stack을 이용할 것이며, yml 파일의 내역은 다음과 같다.
+
+```bash
+# cat docker-stack.yml
+version: '3'
+
+services:
+  prometheus:
+    image: prom/prometheus
+    deploy:
+      mode: global
+      placement:
+       constraints: [node.hostname == TB2-DOCKER]
+    volumes:
+      - /GLUSTERFS/PROM/DATA/prometheus/data:/prometheus
+      - /GLUSTERFS/PROM/DATA/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+      - /GLUSTERFS/PROM/DATA/prometheus/alert.rules:/etc/prometheus/alert.rules
+    command:
+      - '--config.file=/etc/prometheus/prometheus.yml'
+      - '--web.enable-admin-api'
+      - '--storage.tsdb.retention.time=1y'
+    ports:
+      - '9090:9090'
+    depends_on:
+      - cadvisor
+
+  cadvisor:
+    image: google/cadvisor:latest
+    deploy:
+      mode: global
+    ports:
+      - "8080:8080"
+    volumes:
+      - /:/rootfs:ro
+      - /var/run:/var/run:rw
+      - /sys:/sys:ro
+      - /var/lib/docker/:/var/lib/docker:ro
+
+  grafana:
+    image: grafana/grafana
+    deploy:
+      mode: global
+      placement:
+       constraints: [node.hostname == TB2-DOCKER]
+    volumes:
+      - /GLUSTERFS/PROM/DATA/grafana/data:/var/lib/grafana
+      - /GLUSTERFS/PROM/DATA/grafana/grafana.ini:/etc/grafana/grafana.ini
+    environment:
+      - GF_SECURITY_ADMIN_PASSWORD=ghdwngkstjqj
+    depends_on:
+      - prometheus
+    ports:
+      - "3000:3000"
+    depends_on:
+      - prometheus
+
+  alertmanager:
+    image: prom/alertmanager
+    deploy:
+      mode: global
+      placement:
+       constraints: [node.hostname == TB2-DOCKER]
+    volumes:
+      - /GLUSTERFS/PROM/DATA/alertmanager:/etc/alertmanager/
+    depends_on:
+      - prometheus
+    ports:
+      - '9093:9093'
+
+```
+
+> !중요 : cadvisor 를 제외한 구성요소는 다음의 설정에 따라 Manager Node에서만 수행된다.
+
+```python
+placement:
+       constraints: [node.hostname == TB2-DOCKER]
+```
+
+이제 **monitor** 서비스를 다음과 같이 실행한다.
+
+```bash
+# docker stack deploy -c docker-stack.yml monitor
+```
+
+* [ **Manager Node** ]  
+
+```bash
+# docker service ls
+ID             NAME                   MODE      REPLICAS   IMAGE                                                      PORTS
+xodct3yxupq6   monitor_alertmanager   global    1/1        prom/alertmanager:latest                                   *:9093->9093/tcp
+zlay4qoq8gg7   monitor_cadvisor       global    4/4        google/cadvisor:latest                                     *:8080->8080/tcp
+pfljlqixrepi   monitor_grafana        global    1/1        grafana/grafana:latest                                     *:3000->3000/tcp
+1kakkg4asokp   monitor_prometheus     global    1/1        prom/prometheus:latest                                     *:9090->9090/tcp
+hjsvav9409zy   web_hongsnet           global    3/3        registry.hongsnet.net/joohan.hong/docker/hongsnet:latest   *:80->80/tcp
+```
+
+* [ **Worker Nodes** ]  
+
+```bash
+# docker ps
+CONTAINER ID   IMAGE                                                      COMMAND                  CREATED        STATUS        PORTS      NAMES
+93c7bdfd3dde   google/cadvisor:latest                                     "/usr/bin/cadvisor -…"   22 hours ago   Up 22 hours   8080/tcp   monitor_cadvisor.t3zbiuhkpam480yfqgc78tzgn.oa8wy24n0dm7t11w0lav9k5lu
+dca11cc1625a   registry.hongsnet.net/joohan.hong/docker/hongsnet:latest   "/usr/bin/supervisor…"   42 hours ago   Up 42 hours   80/tcp     web_hongsnet.t3zbiuhkpam480yfqgc78tzgn.yyewdmnoun7jnq1l19jrip590
+```
+