首先

由于经常在网络上看到EC2和本地文章，我想提供一下能够持续存储 Prometheus 的 thanos。虽然有其他文章详细解释 Prometheus 和 thanos 的各个组件，但是这里简洁地说明一下至少在 EC2 上如何操作。
(因为不确定是否可以放置链接，如果有兴趣可以自行搜索“thanos”)

普罗米修斯

安装RPM

为简化步骤，使用packagecloud提供的RPM进行安装。

curl -s https://packagecloud.io/install/repositories/prometheus-rpm/release/script.rpm.sh | sudo bash
yum install prometheus2-2.25.2-1.el8.x86_64
yum install node_exporter-1.1.2-1.el8.x86_64

创建配置文件

# my global config
global:
  scrape_interval:     60s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 60s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

  external_labels:
    cluster: prometheus

# Alertmanager configuration
alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
    - targets: ['localhost:9090']

  - job_name: node
    static_configs:
    - targets: ['localhost:9100']

服务设置

systemctl enable node_exporter
systemctl enable prometheus 
systemctl start node_exporter
systemctl start prometheus

无限手套的狂者

现在画面上已经出现了Prometheus，所以我们要继续安装Thanos。继续使用RPM时，要使用Packagecloud的包。

灭霸安装

yum install thanos-0.18.0-1.el8.x86_64

存储设置

这次使用S3作为存储。由于没有特殊配置，就按照常规方式创建并创建IAM用户。

以下是IAM用户的策略。

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Statement",
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:GetObject",
                "s3:DeleteObject",
                "s3:PutObject"
            ],
            "Resource": [
                "arn:aws:s3:::[バケット名]/*",
                "arn:aws:s3:::[バケット名]"
            ]
        }
    ]
}

根据创建的S3信息生成设置文件。

type: S3
config:
  bucket: "[バケット名]"
  endpoint: "s3.amazonaws.com"
  region: "ap-northeast-1"
  access_key: "[アクセスキー]"
  insecure: false
  signature_version2: false
  secret_key: "[シークレットキー]"
  put_user_metadata: {}
  http_config:
    response_header_timeout: 2m
    insecure_skip_verify: false
  trace:
    enable: false
  list_objects_version: ""
  part_size: 67108864
  sse_config:
    type: ""
    kms_key_id: ""
    kms_encryption_context: {}
    encryption_key: ""

thanos的侧边配置设置

由于这次只使用了一台t2.micro来完成所有的设置，所以如果要进行分开设置，需要更改每个URL等等。

THANOS_SIDECAR_OPTS='--tsdb.path=/var/lib/prometheus/data --prometheus.url=http://localhost:9090 --objstore.config-file /etc/prometheus/s3.conf'

THANOS_QUERY_OPTS='--http-address=0.0.0.0:10904 --grpc-address=0.0.0.0:10903 --store=localhost:10901'

THANOS_STORE_OPTS='--data-dir=/var/lib/thanos/store --http-address=0.0.0.0:10906 --grpc-address=0.0.0.0:10905 --objstore.config-file /etc/prometheus/s3.conf'

THANOS_COMPACT_OPTS='--data-dir=/var/lib/thanos/compact --http-address=0.0.0.0:10912 --objstore.config-file /etc/prometheus/s3.conf --wait'

以下是Thanos的设置，但如果保持这样，它将无法启动，所以请确保与Prometheus方面的tsdb.XXX-block-duration保持一致。

PROMETHEUS_OPTS='--config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/var/lib/prometheus/data --storage.tsdb.min-block-duration=1d --storage.tsdb.max-block-duration=1d'

服务设置

systemctl restart prometheus

systemctl enable thanos-sidecar 
systemctl enable thanos-query 
systemctl enable thanos-store 
systemctl enable thanos-compact 
systemctl start thanos-sidecar
systemctl start thanos-query
systemctl start thanos-store
systemctl start thanos-compact

不久之后，数据将完全流向S3。

就此结语

虽然容器正处于全盛时代，但并非所有人都能使用Kubernetes环境，希望能对某个地方的某个人有所帮助。因为能进入EC2，说明也可以在其他云端或本地使用。