Add a sample CentOS/RH handler snippet

Begin work to prepare profiles for booting.

misc/makeboot.centos.py

@@ -0,0 +1,60 @@
+#!/usr/bin/python
+
+import os
+import sys
+import yaml
+
+def mkdirp(path):
+    try:
+        os.makedirs(path)
+    except OSError as e:
+        if e.errno != 17:
+            raise
+
+def makeboot_tree(distribution, profiledir):
+    bootdir = os.path.join(profiledir, 'boot')
+    efisrc = os.path.join(distribution, 'EFI')
+    efidir = os.path.join(bootdir, 'efi/boot')
+    mkdirp(efidir)
+    initrfsdir = os.path.join(bootdir, 'initramfs')
+    mkdirp(initrfsdir)
+    for directory in os.walk(efisrc):
+        for filename in directory[2]:
+            if filename.lower() == 'bootx64.efi':
+                srcfile = os.path.join(directory[0], filename)
+                trgfile = os.path.join(efidir, 'bootx64.efi')
+                os.link(srcfile, trgfile)
+            elif filename.lower() == 'grubx64.efi':
+                srcfile = os.path.join(directory[0], filename)
+                trgfile = os.path.join(efidir, 'grubx64.efi')
+                os.link(srcfile, trgfile)
+    netbootdir = os.path.join(distribution, 'images/pxeboot')
+    srckern = os.path.join(netbootdir, 'vmlinuz')
+    srcinitramfs = os.path.join(netbootdir, 'initrd.img')
+    trgkern = os.path.join(bootdir, 'kernel')
+    trginitramfs = os.path.join(initrfsdir, 'initrd.img')
+    os.link(srckern, trgkern)
+    os.link(srcinitramfs, trginitramfs)
+    trginitramfs = os.path.join(initrfsdir, 'site-initramfs.gz')
+    os.link('/var/lib/confluent/public/site/site-initramfs.gz', trginitramfs)
+    profileinfo = os.path.join(profiledir, 'profile.yaml')
+    with open(profileinfo) as info:
+        profile = yaml.load(info)
+    cfgfile = os.path.join(efidir, 'grub.cfg')
+    with open(cfgfile, 'w') as grubcfg:
+        grubcfg.write('set timeout=5\n')
+        grubcfg.write("menuentry '{0}' {{\n".format(
+            profile.get('label', 'Unknown')))
+        grubcfg.write('    linuxefi /kernel {0}\n'.format(profile.get(
+                     'kernelargs', 'quiet')))
+        initrds = ' '.join(
+            ['/initramfs/{0}'.format(x) for x in os.listdir(initrfsdir)])
+        grubcfg.write('    initrdefi {0}\n}}'.format(initrds))
+    #TODO: create the netboot grub.cfg, is there a way to use grub http
+    # without putting the server in the cfg?
+    # If server is omitted, value of environment variable ‘net_default_server’
+    # is used
+
+
+if __name__ == '__main__':
+    makeboot_tree(sys.argv[1], sys.argv[2])