如何在 Ubuntu 20.04 上使用 Grafana 和 Prometheus 监控 MongoDB

1sudo apt update

1sudo mkdir -p /etc/prometheus

1sudo mkdir -p /var/lib/prometheus

1wget https://github.com/prometheus/prometheus/releases/download/v2.31.0/prometheus-2.31.0.linux-amd64.tar.gz

1tar -xvf prometheus-2.31.0.linux-amd64.tar.gz

1cd prometheus-2.31.0.linux-amd64

1sudo mv prometheus promtool /usr/local/bin/

1sudo mv consoles/ console_libraries/ /etc/prometheus/

1sudo mv prometheus.yml /etc/prometheus/prometheus.yml

1prometheus --version

1[secondary_label Output]
2prometheus, version 2.31.0 (branch: HEAD, revision: b41e0750abf5cc18d8233161560731de05199330)
3  build user:       root@0aa1b7fc430d
4  build date:       20220714-15:13:18
5  go version:       go1.18.4
6  platform:         linux/amd64

1sudo groupadd --system prometheus

1sudo useradd -s /sbin/nologin --system -g prometheus prometheus

1sudo chown -R prometheus:prometheus /etc/prometheus/ /var/lib/prometheus/
2sudo chmod -R 775 /etc/prometheus/ /var/lib/prometheus/

1sudo nano /etc/systemd/system/prometheus.service

 1[label /etc/systemd/system/prometheus.service]
 2[Unit]
 3Description=Prometheus
 4Wants=network-online.target
 5After=network-online.target
 6
 7[Service]
 8User=prometheus
 9Group=prometheus
10Restart=always
11Type=simple
12ExecStart=/usr/local/bin/prometheus \
13    --config.file=/etc/prometheus/prometheus.yml \
14    --storage.tsdb.path=/var/lib/prometheus/ \
15    --web.console.templates=/etc/prometheus/consoles \
16    --web.console.libraries=/etc/prometheus/console_libraries \
17    --web.listen-address=0.0.0.0:9090
18
19[Install]
20WantedBy=multi-user.target

1sudo systemctl start prometheus

1sudo systemctl enable prometheus

1sudo systemctl status prometheus

1[label Output]
2● prometheus.service - Prometheus
3     Loaded: loaded (/etc/systemd/system/prometheus.service; enabled; vendor preset: enabled)
4     Active: active (running) since Fri 2022-08-05 18:06:05 UTC; 13s ago
5   Main PID: 7177 (prometheus)
6      Tasks: 6 (limit: 527)
7     Memory: 21.0M
8     CGroup: /system.slice/prometheus.service
9             └─7177 /usr/local/bin/prometheus --config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/var/lib/prometheus/ --web.console.template>

1sudo ufw status

1sudo ufw allow 9090

1mkdir mongodb-exporter
2cd mongodb-exporter

1wget https://github.com/percona/mongodb_exporter/releases/download/v0.7.1/mongodb_exporter-0.7.1.linux-amd64.tar.gz

1tar xvzf mongodb_exporter-0.7.1.linux-amd64.tar.gz

1sudo mv mongodb_exporter /usr/local/bin/

1mongo

1use admin

1db.createUser({user: "test",pwd: "testing",roles: [{ role: "clusterMonitor", db: "admin" },{ role: "read", db: "local" }]})

 1Successfully added user: {
 2        "user" : "test",
 3        "roles" : [
 4                {
 5                        "role" : "clusterMonitor",
 6                        "db" : "admin"
 7                },
 8                {
 9                        "role" : "read",
10                        "db" : "local"
11                }
12        ]
13}

1exit

1export MONGODB_URI=mongodb://test:testing@localhost:27017

1env | grep mongodb

1MONGODB_URI=mongodb://mongodb_exporter:password@localhost:27017

1cd /lib/systemd/system/
2sudo nano mongodb_exporter.service

 1[label /lib/systemd/system/mongodb_exporter.service]
 2[Unit]
 3Description=MongoDB Exporter
 4User=prometheus
 5
 6[Service]
 7Type=simple
 8Restart=always
 9ExecStart=/usr/local/bin/mongodb_exporter
10
11[Install]
12WantedBy=multi-user.target

1sudo systemctl daemon-reload

1sudo systemctl start mongodb_exporter.service

1sudo systemctl status mongodb_exporter.service

1[label Output]
2● mongodb_exporter.service - MongoDB Exporter
3     Loaded: loaded (/lib/systemd/system/mongodb_exporter.service; disabled; vendor preset: enabled)
4     Active: active (running) since Fri 2022-08-05 18:18:38 UTC; 1 weeks 3 days ago
5   Main PID: 7352 (mongodb_exporte)
6      Tasks: 5 (limit: 527)
7     Memory: 14.2M
8     CGroup: /system.slice/mongodb_exporter.service
9             └─7352 /usr/local/bin/mongodb_exporter

1cd ~
2sudo curl http://localhost:9216/metrics

 1[secondary_label Output]
 2# HELP go_gc_duration_seconds A summary of the GC invocation durations.
 3# TYPE go_gc_duration_seconds summary
 4go_gc_duration_seconds{quantile="0"} 0
 5go_gc_duration_seconds{quantile="0.25"} 0
 6go_gc_duration_seconds{quantile="0.5"} 0
 7go_gc_duration_seconds{quantile="0.75"} 0
 8go_gc_duration_seconds{quantile="1"} 0
 9go_gc_duration_seconds_sum 0
10go_gc_duration_seconds_count 0
11# HELP go_goroutines Number of goroutines that currently exist.
12# TYPE go_goroutines gauge
13go_goroutines 11
14# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
15# TYPE go_memstats_alloc_bytes gauge
16go_memstats_alloc_bytes 1.253696e+06
17# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
18# TYPE go_memstats_alloc_bytes_total counter
19go_memstats_alloc_bytes_total 1.253696e+06
20# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
21# TYPE go_memstats_buck_hash_sys_bytes gauge
22go_memstats_buck_hash_sys_bytes 3054
23# HELP go_memstats_frees_total Total number of frees.
24# TYPE go_memstats_frees_total counter
25go_memstats_frees_total 2866
26# HELP go_memstats_gc_sys_byte
27.
28.
29.
30# HELP mongodb_asserts_total The asserts document reports the number of asserts on the database. While assert errors are typically uncommon, if there are non-zero values for the asserts, you should check the log file for the mongod process for more information. In many cases these errors are trivial, but are worth investigating.
31# TYPE mongodb_asserts_total counter
32mongodb_asserts_total{type="msg"} 0
33mongodb_asserts_total{type="regular"} 0
34mongodb_asserts_total{type="rollovers"} 0
35mongodb_asserts_total{type="user"} 19
36mongodb_asserts_total{type="warning"} 0
37# HELP mongodb_connections The connections sub document data regarding the current status of incoming connections and availability of the database server. Use these values to assess the current load and capacity requirements of the server
38# TYPE mongodb_connections gauge
39mongodb_connections{state="available"} 51198
40mongodb_connections{state="current"} 2
41# HELP mongodb_connections_metrics_created_total totalCreated provides a count of all incoming connections created to the server. This number includes connections that have since closed
42# TYPE mongodb_connections_metrics_created_total counter
43mongodb_connections_metrics_created_total 6
44# HELP mongodb_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which mongodb_exporter was built.
45# TYPE mongodb_exporter_build_info gauge
46mongodb_exporter_build_info{branch="v0.7.1",goversion="go1.11.10",revision="3002738d50f689c8204f70f6cceb8150b98fa869",version="0.7.1"} 1
47# HELP mongodb_exporter_last_scrape_duration_seconds Duration of the last scrape of metrics from MongoDB.
48# TYPE mongodb_exporter_last_scrape_duration_seconds gauge
49mongodb_exporter_last_scrape_duration_seconds 0.003641888
50# HELP mongodb_exporter_last_scrape_error Whether the last scrape of metrics from MongoDB resulted in an error (1 for error, 0 for success).
51# TYPE mongodb_exporter_last_scrape_error gauge
52mongodb_exporter_last_scrape_error 0
53.
54.
55.
56...

1cd /etc/prometheus/

1sudo nano prometheus.yml

1[label /etc/prometheus/prometheus.yml]
2# A scrape configuration containing exactly one endpoint to scrape:
3# Here it's Prometheus itself.
4scrape_configs:
5  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
6  - job_name: "prometheus"
7    static_configs:
8            - targets: ["localhost:9090", "localhost:9216"]

1sudo systemctl restart prometheus

1ssh -L 9090:localhost:9090 your_non_root_user@your_server_ip

1http://your_server_ip:9090/

1https://grafana.com/grafana/dashboards/7353