You need either a collection per Location. If you're 100 % sure no other arangod instance is running, there is no file privilege issue with the LOCK file and the error persists, you can try removing the LOCK file from the database directory manually and start the server. ArangoDB, a San Francisco CA and Cologne, Germany-based open source graph database, raised 27.8M in Series B funding. It should work for local filesystems however. By the way, flock may not be implemented on all filesystems as it may be difficult to implement in a distributed fs. So in this case, the server will also refuse to start. This would not prevent other arangod processes from trying to use the same database directory in parallel, which would be unsafe. In this case the OS cannot guarantee that the file is locked exclusively for the arangod process just started. One database, one query language, and three data models. It supports graph, document, and key-value data models allowing users to freely combine all data models in a single query. more than 7 million downloads and over 7,000 stargazers on GitHub, ArangoDB is the leading open source native multi-model database. It is designed as a general purpose database, offering all the features typically needed for modern web apps. Nosql arangodb 27. The ArangoGraph Insights Platform is the simplest way to run. ARANGODB NOSQL 27. The round was led by Iris Capital, with participation from existing investors Bow Capital and Target Partners. ArangoDB runs on-prem, in the cloud anywhere. ArangoDB, a San Francisco and Cologne, Germany-based most scalable open-source graph database, raised 27.8 million in a Series B round brings ArangoDB’s total financing to 47 million. Native graphs, an integrated search engine, and JSON support, via a single query language. The final possibility is that the flock() call on the file LOCK failed for whatever reason. ArangoDB is an open-source multi-model NoSQL database with a flexible data model for documents and graphs. Community chat: ArangoDB is a scalable graph database system to drive value from connected data, faster. This might be a privilege issue, but it is rather unlikely if you ran the command via sudo. In this case, startup will be refused as well. If there is no ArangoDB running, the error might still occur if there is a file named LOCK in ArangoDB's database directory that is not readable or writable by the arangod process started. You can try to find out about other running arangod processes by issuing a command like ps fax | grep arangod. In this case, the error message and refusal to start is properly justified. It may be possible that another ArangoDB instance is still running that uses the same database directory. Seeing the above error might have different reasons: In general, ArangoDB creates a lockfile in the database directory on startup to make sure that no two arangod processes concurrently work on the same database directory (most probably located in /var/lib/arangodb/).
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