A node module that analyzes a Dockerfile, looks for common traps and mistakes, and helps enforce best practices. A database schema migration tool that converts DB schema definitions into migration scripts that can be run in any environment. An anonymous, ephemeral Docker container registry that uses the official Docker Registry image. Content-centric open source project providing guidance for people who build SaaS products founders, product managers and engineering team leads.
Beyond the Replicated maintained projects, we also serve as regular contributors to these projects we rely heavily on or integrate deeply with. Kustomize introduces a template-free way to customize application configuration that simplifies the use of off-the-shelf applications.
Velero formerly Heptio Ark gives you tools to back up and restore your Kubernetes cluster resources and persistent volumes.
Assumption: each transaction access only one file. Each file stored on the distributed file system has a primary replica. This means that you will need to implement sequential consistency through a protocol similar to the passive primary-backup replication protocol. After performing a set of operations, it is guaranteed that the file system will remain in consistent state. A lock manager is maintained at each replicaServer.
Once any transaction is committed, its mutations to files stored in the file system are required to be durable. Characteristics of the Distributed File System Reads from the file system. Writes to files stored on the file system. This procedure is followed: The client requests a new transaction ID from the server. The request includes the name of the file to be mutated during the transaction.
If the file specified by the client does not exist, the master creates metadata for the file and chooses where its replicas can be located and which one of them will be the primary. The client will then communicate these information to the primary along with the write request.
Selecting the replicaServers to place the replicas of the file and selecting of the primary replica can be random. All subsequent client messages corresponding to a transaction will be directed to the replicaServer with the primary replica contain the ID of that transaction. The client sends to the replicaServer a series of write requests to the file specified in the transaction. Each request has a unique serial number. The server appends all writes sent by the client to the file.
Updates are also propagated in the same order to other replicaServers. The replicaServer with the primary replica must keep track of all messages received from the client as part of each transaction. The server must also apply file mutations based on the correct order of the transactions. XtreemFS is a general purpose storage system and covers most storage needs in a single deployment. It is open-source, requires no special hardware or kernel modules, and can be mounted on Linux, Windows and OS X.
XtreemFS is the only fault-tolerant file system that automatically handles all failure modes — including network splits. XtreemFS scales according to your needs within minutes , simply by adding new standard hardware. Starting with a single server, growing to a cluster and across datacenters.
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