Etcd DNS discovery #2521
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Etcd DNS discovery #2521
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jsok
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Pinging @xiang90 |
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I will take a look over the weekend or early next week. |
xiang90
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Apr 3, 2017
physical/etcd.go
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| @@ -13,6 +16,7 @@ import ( | |||
| var ( | |||
| EtcdSyncConfigError = errors.New("client setup failed: unable to parse etcd sync field in config") | |||
| EtcdSyncClusterError = errors.New("client setup failed: unable to sync etcd cluster") | |||
| EtcdMultipleDiscoveryError = errors.New("client setup failed: multiple discovery or bootstrap flags specified, use either \"address\" or \"discovery_srv\"") | |||
xiang90
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Apr 3, 2017
physical/etcd.go
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| @@ -95,3 +99,44 @@ func getEtcdAPIVersion(c client.Client) (string, error) { | |||
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| return "3", nil | |||
| } | |||
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| func getEtcdEndpoints(conf map[string]string) ([]string, error) { | |||
| getOption := func(conf_key, env_var string) (string, bool) { | |||
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If it looks generally useful I can move it up to the module scope.
xiang90
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Apr 3, 2017
physical/etcd.go
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| func getEtcdEndpoints(conf map[string]string) ([]string, error) { | ||
| getOption := func(conf_key, env_var string) (string, bool) { | ||
| conf_val, in_conf := conf[conf_key] |
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confVal instead of conf_val. use camelcase instead of underscore
xiang90
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Apr 3, 2017
physical/etcd.go
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| discoverer := client.NewSRVDiscover() | ||
| endpoints, err := discoverer.Discover(domain) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("etcd SRV discovery: %s", err) |
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failed to discovery etcd endpoints through SRV discovery: %v
xiang90
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Apr 3, 2017
| @@ -122,3 +138,4 @@ storage "etcd" { | |||
| ``` | |||
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| [etcd]: https://coreos.com/etcd "Etcd by CoreOS" | |||
| [dns discovery]: https://coreos.com/etcd/docs/latest/v2/clustering.html#dns-discovery "Etcd cluster DNS Discovery" | |||
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use this link instead: https://coreos.com/etcd/docs/latest/op-guide/clustering.html#dns-discovery
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@jsok Have you gave this a try? I want to make sure it works. |
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looks good in general. |
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@xiang90 yes I've tested local with a 3-node etcd cluster with SSL. |
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lgtm |
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Merging with the 👍 from @xiang90 |
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Adds a new etcd config option
discovery_srvwhich contains the domain name which the etcd client will use to perform DNS SRV record discovery.Fixes #2519