35 lines
1021 B
Go
35 lines
1021 B
Go
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package driver
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import (
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"github.com/hashicorp/nomad/client/config"
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"github.com/hashicorp/nomad/nomad/structs"
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"golang.org/x/sys/unix"
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)
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func (d *ExecDriver) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) {
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// Get the current status so that we can log any debug messages only if the
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// state changes
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_, currentlyEnabled := node.Attributes[execDriverAttr]
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// Only enable if cgroups are available and we are root
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if _, ok := node.Attributes["unique.cgroup.mountpoint"]; !ok {
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if currentlyEnabled {
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d.logger.Printf("[DEBUG] driver.exec: cgroups unavailable, disabling")
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}
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delete(node.Attributes, execDriverAttr)
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return false, nil
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} else if unix.Geteuid() != 0 {
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if currentlyEnabled {
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d.logger.Printf("[DEBUG] driver.exec: must run as root user, disabling")
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}
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delete(node.Attributes, execDriverAttr)
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return false, nil
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}
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if !currentlyEnabled {
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d.logger.Printf("[DEBUG] driver.exec: exec driver is enabled")
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}
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node.Attributes[execDriverAttr] = "1"
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return true, nil
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}
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