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jplana / python-etcd

A python client for etcd
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How to connect with the etcd cluster with multiple ports #223

Closed tobegit3hub closed 7 years ago

tobegit3hub commented 7 years ago

Now we can connect with etcd with single ip and port.

Is it possible to connect with etcd cluster with multiple IPs and ports? It's really reasonable because we may reconnect with another etcd instance even when one instance is down.

lavagetto commented 7 years ago

@tobegit3hub you can either pass a tuple of (host, port) tuples to python-etcd, or if you can set up a SRV record on your DNS, you can use the srv_domain variable:

so if you set up a SRV record for etcd._tcp.mydomain.com to list all of your etcd servers, you can then connect to the cluster as follows:

c = etcd.Client(srv_domain='mydomain.com')

And even if you pass to python-etcd one server, you can just set allow_reconnect=True and the library will fetch the list of etcd members from the cluster, and reconnect automatically upon failure.

tobegit3hub commented 7 years ago

Thanks @lavagetto and the tuple of (host, port) is actually what we wants. I have found the usage in https://github.com/jplana/python-etcd/blob/master/src/etcd/client.py#L75 . It would be great if we have some document about this.

Moreover, allow_reconnect=True is really helpful, too. 👍