https://www.youtube.com/watch?v=h4Sl21AKiDg
Prometheus Server, Pushgateway, Alertmanager
https://prometheus.io/docs/concepts/metric_types/
https://itnext.io/prometheus-for-beginners-5f20c2e89b6c
Prometheus is essentially just another metrics collection and analysis tool, and at its core it is made up of 3 components:
当对象大小超过 128KiB 后，比如a.txt，数据和元数据分开存储
MinIO 提供了命令行工具xl-meta用来查看xl.meta文件
{
"Versions": [
{
"Header": {
"EcM": 1,
"EcN": 0,
"Flags": 2,
"ModTime": "2025-01-23T15:27:45.311572+08:00",
"Signature": "d0c2b58b",
"Type": 1,
"VersionID": "00000000000000000000000000000000"
},
"Idx": 0,
"Metadata": {
"Type": 1,
"V2Obj": {
"CSumAlgo": 1,
"DDir": "74hQxU7FTrq56ShK8pjqAA==",
"EcAlgo": 1,
"EcBSize": 1048576,
"EcDist": [1],
"EcIndex": 1,
"EcM": 1,
"EcN": 0,
"ID": "AAAAAAAAAAAAAAAAAAAAAA==",
"MTime": 1737617265311572000,
"MetaSys": {},
"MetaUsr": {
"content-type": "text/plain",
"etag": "90a1a2b65a4e40d55d758f2a59fe33b4"
},
"PartASizes": [2097152],
"PartETags": null,
"PartNums": [1],
"PartSizes": [2097152],
"Size": 2097152
},
"v": 1734527744
}
}
]
}.
├── a.txt
│ ├── ef8850c5-4ec5-4eba-b9e9-284af298ea00
│ │ └── part.1
│ └── xl.meta
└── b.txt
└── xl.metaminio 启动核心的核心命令为 minio server https://minio{1...4}.example.net:9000/mnt/disk{1...4}/minio，表示 minio 服务分布部署在 4 台服务器上总共 16 块磁盘上，...这种写法称之为拓展表达式，比如 http://minio{1…4}.example.net:9000实际上表示http://minio1.example.net:9000到http://minio4.example.net:9000`的4台主机。