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simplify option names

This commit is contained in:
Leo Antunes 2019-03-25 23:31:32 +01:00
parent 5e01de00c1
commit b1ff41c523
3 changed files with 24 additions and 10 deletions
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14
README.md
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@ -38,6 +38,20 @@ the nodes already joined to the mesh cluster.
## Configuration options
All options can be passed either as command-line flags or environment variables:
| Option | Env | Description | Default |
|---|---|---|---|
| --cluster-key | WESHER_CLUSTER_KEY | shared key for cluster membership; must be 32 bytes base64 encoded; will be generated if not provided | |
| --join | WESHER_JOIN | comma separated list of hostnames or IP addresses to existing cluster members; if not provided, will attempt resuming any known state or otherwise wait for further members | |
| --bind-addr | WESHER_BIND_ADDR | IP address to bind to for cluster membership | `0.0.0.0` |
| --cluster-port | WESHER_CLUSTER_PORT | port used for membership gossip traffic (both TCP and UDP); must be the same across cluster | `7946` |
| --wireguard-port | WESHER_WIREGUARD_PORT | port used for wireguard traffic (UDP); must be the same across cluster | `51820` |
| --overlay-net | WESHER_OVERLAY_NET | the network in which to allocate addresses for the overlay mesh network (CIDR format); smaller networks increase the chance of IP collision | `10.0.0.0/8` |
| --interface | WESHER_INTERFACE | name of the wireguard interface to create and manage | `wgoverlay` |
| --log-level | WESHER_LOG_LEVEL | set the verbosity (debug/info/warn/error) | `warn` |
## Security considerations
The decision of whom to allow in the mesh is made by [memberlist](github.com/hashicorp/memberlist) and is secured by a

16
config.go
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@ -10,14 +10,14 @@ import (
const clusterKeyLen = 32
type config struct {
LogLevel string `desc:"set the verbosity (debug/info/warn/error)" default:"warn"`
ClusterKey []byte `desc:"shared key for cluster membership; must be 32 bytes base64 encoded; will be generated if not provided"`
JoinAddrs []string `desc:"comma separated list of IP addresses to at least one existing cluster member; if not provided, will attempt resuming any known state or otherwise wait for further members."`
BindAddr string `desc:"IP address to bind to for cluster membership" default:"0.0.0.0"`
ClusterPort int `desc:"port used for membership gossip traffic (both TCP and UDP); must be the same across cluster" default:"7946"`
WireguardPort int `desc:"port used for wireguard traffic (UDP); must be the same across cluster" default:"51820"`
OverlayNet *network `desc:"the network in which to allocate addresses for the overlay mesh network (CIDR format); smaller networks increase the chance of IP collision" default:"10.0.0.0/8"`
InterfaceName string `desc:"name of the wireguard interface to create and manage" default:"wgoverlay"`
ClusterKey []byte `id:"cluster-key" desc:"shared key for cluster membership; must be 32 bytes base64 encoded; will be generated if not provided"`
Join []string `desc:"comma separated list of hostnames or IP addresses to existing cluster members; if not provided, will attempt resuming any known state or otherwise wait for further members."`
BindAddr string `id:"bind-addr" desc:"IP address to bind to for cluster membership" default:"0.0.0.0"`
ClusterPort int `id:"cluster-port" desc:"port used for membership gossip traffic (both TCP and UDP); must be the same across cluster" default:"7946"`
WireguardPort int `id:"wireguard-port" desc:"port used for wireguard traffic (UDP); must be the same across cluster" default:"51820"`
OverlayNet *network `id:"overlay-net" desc:"the network in which to allocate addresses for the overlay mesh network (CIDR format); smaller networks increase the chance of IP collision" default:"10.0.0.0/8"`
Interface string `desc:"name of the wireguard interface to create and manage" default:"wgoverlay"`
LogLevel string `id:"log-level" desc:"set the verbosity (debug/info/warn/error)" default:"warn"`
// for easier local testing
UseIPAsName bool `default:"false" opts:"hidden"`

4
main.go
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@ -19,7 +19,7 @@ func main() {
}
logrus.SetLevel(logLevel)
wg, err := newWGConfig(config.InterfaceName, config.WireguardPort)
wg, err := newWGConfig(config.Interface, config.WireguardPort)
if err != nil {
logrus.Fatal(err)
}
@ -30,7 +30,7 @@ func main() {
}
nodec, errc := cluster.members() // avoid deadlocks by starting before join
if err := cluster.join(config.JoinAddrs); err != nil {
if err := cluster.join(config.Join); err != nil {
logrus.Fatalf("could not join cluster: %s", err)
}