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It is a distributed configuration management clustering product like zookeeper. It simplifies the creation and sharing of mostly configuration data in clustered
by jarito 13y ago
It is a distributed configuration management clustering product like zookeeper. It simplifies the creation and sharing of mostly configuration data in clustered or distributed systems.
- ballard 13y agoIt's trying to solve with marketing what Chef does. There is more to configuration management that templating files, but in inspection and having other services arriving at other states.
- vidarh 13y agoIt is not even trying to solve remotely the same issues as Chef. For starters, it is not going to install or uninstall packages or modify files, or nearly any of the things that a typical Chef recipe might do.
- Touche 13y agoI don't know what that means or what zookeeper is... Can you explain the problem it solves?
- sethhochberg 13y agoImagine you're working with a processing system made up of tens or hundreds of computers all (usually) identically configured, networked together and solving small chunks of a large problem. This is software to minimize the effort required to configure all of those individual systems which make up the "compute cluster".
- vidarh 13y agoYour web app needs to know what IP address, username and password to connect to the database on. If it's all one the same box, that's trivial. But imagine you have several app serves, and several other systems that all needs to talk to the database. Then one day you need to change details of the database server. Now you can either use a tool to update all the configurations (or do it by hand), or you can have all of these apps pull the database config from a distributed directory of some sort. Etcd is such a directory. Similar to LDAP, but simpler (LDAP requires you to write schemas, and decide which attributes to index on and in set up replication hierarchies). Some people also use DNS for this (you can put arbitrary data in a private DNS server).
- ballard 13y agoZookeeper is a very specialized distributed filesystem for saving and delivering important details for very large systems. Getting concurrent distributed systems like this right is the equivalent of summited Mount Everest starting by walking from Paris. It was mostly developed at Yahoo and spun off as an Apache project under Hadoop and commercialized by Cloudera. Netflix uses ZK for example.
- ithkuil 13y agoso you are basically saying that you don't trust the people who designed etcd.