在Kubernetes集群中存储数据

有多种方法可以为Kubernetes集群中运行的应用程序配置数据存储。其中一些已经过时，另一些则是在最近才出现。在本文中，我们将考虑三个存储连接选项的概念，包括最近的一个-通过容器存储接口的连接。

1. PV

, Kubernetes:

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volumeMounts (mountPath) — , .

volumes , . , ( : awsElasticBlockStore) . , .

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, : configMap, secret, emptyDir, hostPath:

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2. SC/PVC/PV

— Storage class, PersistentVolumeClaim, PersistentVolume.

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: volume PersistentVolumeClaim claimName.

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• ;
• : ReadWriteOnce ReadWriteMany;
• Storage class — .

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PV , Kubernetes — Provisioner ( Storage class). , , Kubernetes PersistentVolume, PersistentVolumeClaim.

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Storage class, . , AWS Google Cloud, — Storage class PVC. Persistance Volume , Provisioner.

3. Container Storage Interface

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, Cloud Foundry, Kubernetes, Mesos Docker Container Storage Interface (CSI) — , (CSI Driver), . Kubernetes .

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, CSI Driver : Node Plugin Controller plugin.

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2. . Kubernetes . CSI . , PersistentVolume.
3. PersistentVolume Kubernetes.
4. . Kubernetes CephFS , CSI- Ceph Nautilus CephFS-.
5. . CSI- Prometheus , , . .
6. Topology aware. , , , , .

Ceph Kubernetes CSI, . - Ceph, 15 .

: , Southbridge, Certified Kubernetes Administrator, kubespray.