github/linuxkit
1
0
Fork 0
mirror of https://github.com/linuxkit/linuxkit.git synced 2025-07-19 17:26:28 +00:00
Code Issues Projects Releases Wiki Activity

cmd/packet: Factor out the iPXE script creation

Browse Source 
Subsequent commits will use it in other places.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2018-01-08 16:19:10 +00:00
parent 90510777ad
commit 8ae4f5bc86
1 changed files with 40 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
src/cmd/linuxkit/run_packet.go
View File

@ -122,31 +122,7 @@ func runPacket(args []string) {
}()
}
// Build the iPXE script
// Note, we *append* the <prefix>-cmdline. iXPE booting will
// need the first set of "kernel-params" and we don't want to
// require these to be added to every YAML file.
userData := "#!ipxe\n\n"
userData += "dhcp\n"
userData += fmt.Sprintf("set base-url %s\n", url)
if *machineFlag != "baremetal_2a" {
var tty string
// x86_64 Packet machines have console on non standard ttyS1 which is not in most examples
if !strings.Contains(cmdline, "console=ttyS1") {
tty = "console=ttyS1,115200"
}
userData += fmt.Sprintf("set kernel-params ip=dhcp nomodeset ro serial %s %s\n", tty, cmdline)
userData += fmt.Sprintf("kernel ${base-url}/%s-kernel ${kernel-params}\n", name)
userData += fmt.Sprintf("initrd ${base-url}/%s-initrd.img\n", name)
} else {
// With EFI boot need to specify the initrd and root dev explicitly. See:
// http://ipxe.org/appnote/debian_preseed
// http://forum.ipxe.org/showthread.php?tid=7589
userData += fmt.Sprintf("initrd --name initrd ${base-url}/%s-initrd.img\n", name)
userData += fmt.Sprintf("set kernel-params ip=dhcp nomodeset ro %s\n", cmdline)
userData += fmt.Sprintf("kernel ${base-url}/%s-kernel initrd=initrd root=/dev/ram0 ${kernel-params}\n", name)
}
userData += "boot"
userData := packetIPXEScript(name, url, cmdline, packetMachineToArch(*machineFlag))
log.Debugf("Using userData of:\n%s\n", userData)
// Make sure the URL works
@ -254,6 +230,45 @@ func runPacket(args []string) {
}
}
// Convert machine type to architecture
func packetMachineToArch(machine string) string {
switch machine {
case "baremetal_2a", "baremetal_2a2":
return "aarch64"
default:
return "x86_64"
}
}
// Build the iPXE script for packet machines
func packetIPXEScript(name, baseURL, cmdline, arch string) string {
// Note, we *append* the <prefix>-cmdline. iXPE booting will
// need the first set of "kernel-params" and we don't want to
// require these to be added to every YAML file.
script := "#!ipxe\n\n"
script += "dhcp\n"
script += fmt.Sprintf("set base-url %s\n", baseURL)
if arch != "aarch64" {
var tty string
// x86_64 Packet machines have console on non standard ttyS1 which is not in most examples
if !strings.Contains(cmdline, "console=ttyS1") {
tty = "console=ttyS1,115200"
}
script += fmt.Sprintf("set kernel-params ip=dhcp nomodeset ro serial %s %s\n", tty, cmdline)
script += fmt.Sprintf("kernel ${base-url}/%s-kernel ${kernel-params}\n", name)
script += fmt.Sprintf("initrd ${base-url}/%s-initrd.img\n", name)
} else {
// With EFI boot need to specify the initrd and root dev explicitly. See:
// http://ipxe.org/appnote/debian_preseed
// http://forum.ipxe.org/showthread.php?tid=7589
script += fmt.Sprintf("initrd --name initrd ${base-url}/%s-initrd.img\n", name)
script += fmt.Sprintf("set kernel-params ip=dhcp nomodeset ro %s\n", cmdline)
script += fmt.Sprintf("kernel ${base-url}/%s-kernel initrd=initrd root=/dev/ram0 ${kernel-params}\n", name)
}
script += "boot"
return script
}
// validateHTTPURL does a sanity check that a URL returns a 200 or 300 response
func validateHTTPURL(url string) error {
resp, err := http.Head(url)