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systemd environment file: lookup for both /etc/default (debian like) and /etc/sysconfig (centos) #350

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systemd environment file: lookup for both /etc/default (debian like) and /etc/sysconfig (centos) #350

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25 changes: 24 additions & 1 deletion service_systemd_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,8 @@ import (
"text/template"
)

const defaultEnvDir = "/etc/sysconfig"

func isSystemd() bool {
if _, err := os.Stat("/run/systemd/system"); err == nil {
return true
Expand Down Expand Up @@ -89,6 +91,25 @@ func (s *systemd) configPath() (cp string, err error) {
return
}

func (s *systemd) envFilePath() (ep string) {
dirs := []string{"/etc/default", "/etc/sysconfig"}
// first lookup for existing file for backward compatibility
for _, dir := range dirs {
ep = filepath.Join(dir, s.Name)
if _, err := os.Stat(ep); err == nil {
return
}
}
// if not exists, lookup system default
for _, v := range dirs {
if _, err := os.Stat(v); err == nil {
ep = filepath.Join(v, s.Name)
return
}
}
return filepath.Join(defaultEnvDir, s.Name)
}

func (s *systemd) unitName() string {
return s.Config.Name + ".service"
}
Expand Down Expand Up @@ -172,6 +193,7 @@ func (s *systemd) Install() error {
SuccessExitStatus string
LogOutput bool
LogDirectory string
EnvFile string
}{
s.Config,
path,
Expand All @@ -183,6 +205,7 @@ func (s *systemd) Install() error {
s.Option.string(optionSuccessExitStatus, ""),
s.Option.bool(optionLogOutput, optionLogOutputDefault),
s.Option.string(optionLogDirectory, defaultLogDirectory),
s.envFilePath(),
}

err = s.template().Execute(f, to)
Expand Down Expand Up @@ -321,7 +344,7 @@ StandardError=file:{{.LogDirectory}}/{{.Name}}.err
{{if .Restart}}Restart={{.Restart}}{{end}}
{{if .SuccessExitStatus}}SuccessExitStatus={{.SuccessExitStatus}}{{end}}
RestartSec=120
EnvironmentFile=-/etc/sysconfig/{{.Name}}
EnvironmentFile=-{{.EnvFile}}

{{range $k, $v := .EnvVars -}}
Environment={{$k}}={{$v}}
Expand Down