mirror of https://github.com/k3d-io/k3d
clusterCreate: use docker VM IP for API connection (#399)
Try - `docker-machine ip` - host lookup for `host.docker.internal` Fixes #388pull/402/head
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/* |
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Copyright © 2020 The k3d Author(s) |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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|
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The above copyright notice and this permission notice shall be included in |
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all copies or substantial portions of the Software. |
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|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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package docker |
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import ( |
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"fmt" |
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"net" |
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"os" |
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"os/exec" |
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"strings" |
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log "github.com/sirupsen/logrus" |
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) |
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func (d Docker) GetDockerMachineIP() (string, error) { |
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machine := os.ExpandEnv("$DOCKER_MACHINE_NAME") |
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dockerHostName := "host.docker.internal" |
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// Option 1: use the docker-machine executable
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if machine != "" { |
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dockerMachinePath, err := exec.LookPath("docker-machine") |
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if err != nil { |
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return "", err |
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} |
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out, err := exec.Command(dockerMachinePath, "ip", machine).Output() |
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if err != nil { |
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log.Printf("Error executing 'docker-machine ip'") |
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if exitError, ok := err.(*exec.ExitError); ok { |
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log.Printf("%s", string(exitError.Stderr)) |
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} |
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return "", err |
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} |
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ipStr := strings.TrimSuffix(string(out), "\n") |
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ipStr = strings.TrimSuffix(ipStr, "\r") |
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return ipStr, nil |
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} |
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// Option 2: Try to lookup "host.docker.internal"
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log.Debugf("Docker Machine not found, trying to lookup '%s' instead...", dockerHostName) |
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addrs, err := net.LookupHost(dockerHostName) |
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if err != nil { |
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log.Debugf("Lookup of Host %s failed: %+v", dockerHostName, err) |
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return "", fmt.Errorf("Failed to get IP of Docker VM") |
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} |
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if len(addrs) == 0 { |
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log.Debugf("Lookup of Host %s didn't return any addresses", dockerHostName) |
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return "", fmt.Errorf("Failed to get IP of Docker VM") |
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} |
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log.Debugf("Addresses returned for %s: %+v", dockerHostName, addrs) |
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return addrs[0], nil |
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} |
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