49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package configure
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import (
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"os"
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"path"
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"github.com/hpcng/warewulf/internal/pkg/node"
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"github.com/hpcng/warewulf/internal/pkg/overlay"
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"github.com/hpcng/warewulf/internal/pkg/util"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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"github.com/pkg/errors"
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)
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/*
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Creates '/etc/hosts' from the host template.
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*/
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func Hostfile() error {
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hostTemplate := path.Join(overlay.OverlaySourceDir("host"), "/etc/hosts.ww")
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if !(util.IsFile(hostTemplate)) {
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wwlog.Error("'the overlay template '/etc/hosts.ww' does not exists in 'host' overlay")
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os.Exit(1)
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}
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nodeInfo := node.NewInfo()
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hostname, _ := os.Hostname()
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nodeInfo.Id.Set(hostname)
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tstruct := overlay.InitStruct(&nodeInfo)
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buffer, backupFile, writeFile, err := overlay.RenderTemplateFile(
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hostTemplate,
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tstruct)
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if err != nil {
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wwlog.Error("%s", err)
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os.Exit(1)
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}
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info, err := os.Stat(hostTemplate)
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if err != nil {
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wwlog.Error("%s", err)
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os.Exit(1)
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}
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if writeFile {
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err = overlay.CarefulWriteBuffer("/etc/hosts", buffer, backupFile, info.Mode())
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if err != nil {
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return errors.Wrap(err, "could not write file from template")
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}
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}
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return nil
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}
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