May 2018
Intermediate to advanced
554 pages
13h 51m
English
Content preview from Kubernetes Cookbook - Second Edition
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Discovery mechanism
Discovery provides a more flexible way to create a cluster. It doesn't need to know other peer IPs beforehand. It uses an existing etcd cluster to bootstrap one. In this section, we'll demonstrate how to leverage that to launch a three-node etcd cluster:
- Firstly, we'll need to have an existing cluster with three-node configuration. Luckily, the etcd official website provides a discovery service (https://discovery.etcd.io/new?size=n); n will be the number of nodes in your etcd cluster, which is ready to use:
// get a request URL# curl -w "n" 'https://discovery.etcd.io/new?size=3'https://discovery.etcd.io/f6a3fb54b3fd1bb02e26a89fd40df0e8
- Then we are able to use the URL to bootstrap a cluster easily. The command line ...
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