diff options
Diffstat (limited to 'cloudinit/config/cc_set_hostname.py')
| -rw-r--r-- | cloudinit/config/cc_set_hostname.py | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/cloudinit/config/cc_set_hostname.py b/cloudinit/config/cc_set_hostname.py index 1d23d80d..eb0ca328 100644 --- a/cloudinit/config/cc_set_hostname.py +++ b/cloudinit/config/cc_set_hostname.py @@ -18,8 +18,11 @@ A hostname and fqdn can be provided by specifying a full domain name under the ``fqdn`` key. Alternatively, a hostname can be specified using the ``hostname`` key, and the fqdn of the cloud wil be used. If a fqdn specified with the ``hostname`` key, it will be handled properly, although it is better to use -the ``fqdn`` config key. If both ``fqdn`` and ``hostname`` are set, ``fqdn`` -will be used. +the ``fqdn`` config key. If both ``fqdn`` and ``hostname`` are set, +it is distro dependent whether ``hostname`` or ``fqdn`` is used, +unless the ``prefer_fqdn_over_hostname`` option is true and fqdn is set +it will force the use of FQDN in all distros, and if false then it will +force the hostname use. This module will run in the init-local stage before networking is configured if the hostname is set by metadata or user data on the local system. @@ -31,22 +34,22 @@ based on initial hostname. **Internal name:** ``cc_set_hostname`` -**Module frequency:** per always +**Module frequency:** always **Supported distros:** all **Config keys**:: preserve_hostname: <true/false> + prefer_fqdn_over_hostname: <true/false> fqdn: <fqdn> hostname: <fqdn/hostname> """ import os - -from cloudinit.atomic_helper import write_json from cloudinit import util +from cloudinit.atomic_helper import write_json class SetHostnameError(Exception): @@ -59,9 +62,20 @@ class SetHostnameError(Exception): def handle(name, cfg, cloud, log, _args): if util.get_cfg_option_bool(cfg, "preserve_hostname", False): - log.debug(("Configuration option 'preserve_hostname' is set," - " not setting the hostname in module %s"), name) + log.debug( + "Configuration option 'preserve_hostname' is set," + " not setting the hostname in module %s", + name, + ) return + + # Set prefer_fqdn_over_hostname value in distro + hostname_fqdn = util.get_cfg_option_bool( + cfg, "prefer_fqdn_over_hostname", None + ) + if hostname_fqdn is not None: + cloud.distro.set_option("prefer_fqdn_over_hostname", hostname_fqdn) + (hostname, fqdn) = util.get_hostname_fqdn(cfg, cloud) # Check for previous successful invocation of set-hostname @@ -70,14 +84,15 @@ def handle(name, cfg, cloud, log, _args): # previous-hostname file which only contains the base hostname. # TODO consolidate previous-hostname and set-hostname artifact files and # distro._read_hostname implementation so we only validate one artifact. - prev_fn = os.path.join(cloud.get_cpath('data'), "set-hostname") + prev_fn = os.path.join(cloud.get_cpath("data"), "set-hostname") prev_hostname = {} if os.path.exists(prev_fn): prev_hostname = util.load_json(util.load_file(prev_fn)) - hostname_changed = (hostname != prev_hostname.get('hostname') or - fqdn != prev_hostname.get('fqdn')) + hostname_changed = hostname != prev_hostname.get( + "hostname" + ) or fqdn != prev_hostname.get("fqdn") if not hostname_changed: - log.debug('No hostname changes. Skipping set-hostname') + log.debug("No hostname changes. Skipping set-hostname") return log.debug("Setting the hostname to %s (%s)", fqdn, hostname) try: @@ -86,6 +101,7 @@ def handle(name, cfg, cloud, log, _args): msg = "Failed to set the hostname to %s (%s)" % (fqdn, hostname) util.logexc(log, msg) raise SetHostnameError("%s: %s" % (msg, e)) from e - write_json(prev_fn, {'hostname': hostname, 'fqdn': fqdn}) + write_json(prev_fn, {"hostname": hostname, "fqdn": fqdn}) + # vi: ts=4 expandtab |