def handle_cloud_config(self, ctype, filename, payload):
if ctype == "__begin__":
self.cloud_config_str = ""
return
if ctype == "__end__":
cloud_config = self.get_ipath("cloud_config")
util.write_file(cloud_config, self.cloud_config_str, 0600)
return
self.cloud_config_str += "\n#%s\n%s" % (filename, payload)
def run_per_instance(name, func, args, clear_on_fail=False):
semfile = "%s/%s" % (get_ipath_cur("data"), name)
if os.path.exists(semfile):
return
util.write_file(semfile, str(time.time()))
try:
func(*args)
except:
if clear_on_fail:
os.unlink(semfile)
raise
def handle(_name, cfg, cloud, log, _args):
if util.get_cfg_option_bool(cfg, "preserve_hostname", False):
log.debug("Option 'preserve_hostname' is set. Not setting hostname.")
return True
(hostname, _fqdn) = util.get_hostname_fqdn(cfg, cloud)
try:
old_name = set_hostname(hostname, log)
if old_name:
prev_fn = "%s/%s" % (cloud.get_cpath('data'), "previous-hostname")
util.write_file(prev_fn, "%s\n" % (old_name), 0644)
except Exception:
util.logexc(log)
log.warn("Failed to set hostname to %s", hostname)
return True
def set_hostname_deb(hostname, log):
def read_hostname(filename, default=None):
with open(filename, "r") as fp:
lines = fp.readlines()
for line in lines:
hpos = line.find("#")
if hpos != -1:
line = line[0:hpos]
line = line.rstrip()
if line:
return line
return default
old_hostname = read_hostname('/etc/hostname')
util.write_file("/etc/hostname", "%s\n" % hostname, 0644)
return old_hostname
def set_hostname_rh(hostname, log):
lines = []
with open('/etc/sysconfig/network', 'r') as fh:
lines = fh.read().splitlines()
adjusted_lines = []
old_hostname = None
for line in lines:
mtch = re.match(r"^\s*HOSTNAME\s*=\s*(.*)$", line, re.I)
if mtch:
old_hostname = mtch.group(1)
log.info("Removing old hostname entry - %s", line)
else:
adjusted_lines.append(line)
adjusted_lines.append("HOSTNAME=%s" % (hostname))
contents = "%s\n" % os.linesep.join(adjusted_lines)
util.write_file('/etc/sysconfig/network', contents, 0644)
return old_hostname
def set_cur_instance(self):
try:
os.unlink(cur_instance_link)
except OSError as e:
if e.errno != errno.ENOENT:
raise
iid = self.get_instance_id()
os.symlink("./instances/%s" % iid, cur_instance_link)
idir = self.get_ipath()
dlist = []
for d in ["handlers", "scripts", "sem"]:
dlist.append("%s/%s" % (idir, d))
util.ensure_dirs(dlist)
ds = "%s: %s\n" % (self.datasource.__class__, str(self.datasource))
dp = self.get_cpath('data')
util.write_file("%s/%s" % (idir, 'datasource'), ds)
util.write_file("%s/%s" % (dp, 'previous-datasource'), ds)
util.write_file("%s/%s" % (dp, 'previous-instance-id'), "%s\n" % iid)
return iid
def store_userdata(self):
util.write_file(self.get_ipath('userdata_raw'),
self.datasource.get_userdata_raw(), 0600)
util.write_file(self.get_ipath('userdata'),
self.datasource.get_userdata(), 0600)
