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@ -29,7 +29,7 @@ short_description: Manage hostname
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requirements: [ hostname ]
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description:
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- Set system's hostname.
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- Currently implemented on Debian, Ubuntu, Fedora, RedHat, openSUSE, Linaro, ScientificLinux, Arch, CentOS, AMI.
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- Currently implemented on Debian, Ubuntu, Fedora, RedHat, openSUSE, Linaro, ScientificLinux, Arch, CentOS, AMI, Alpine Linux.
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- Any distribution that uses systemd as their init system.
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- Note, this module does *NOT* modify /etc/hosts. You need to modify it yourself using other modules like template or replace.
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options:
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@ -56,6 +56,15 @@ class UnimplementedStrategy(object):
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def __init__(self, module):
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self.module = module
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def update_current_and_permanent_hostname(self):
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self.unimplemented_error()
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def update_current_hostname(self):
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self.unimplemented_error()
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def update_permanent_hostname(self):
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self.unimplemented_error()
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def get_current_hostname(self):
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self.unimplemented_error()
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@ -103,6 +112,9 @@ class Hostname(object):
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else:
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self.strategy = self.strategy_class(module)
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def update_current_and_permanent_hostname(self):
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return self.strategy.update_current_and_permanent_hostname()
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def get_current_hostname(self):
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return self.strategy.get_current_hostname()
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@ -129,6 +141,26 @@ class GenericStrategy(object):
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def __init__(self, module):
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self.module = module
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self.hostname_cmd = self.module.get_bin_path('hostname', True)
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self.changed = False
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def update_current_and_permanent_hostname(self):
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self.update_current_hostname()
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self.update_permanent_hostname()
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return self.changed
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def update_current_hostname(self):
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name = self.module.params['name']
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current_name = self.get_current_hostname()
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if current_name != name:
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self.set_current_hostname(name)
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self.changed = True
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def update_permanent_hostname(self):
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name = self.module.params['name']
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permanent_name = self.get_permanent_hostname()
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if permanent_name != name:
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self.set_permanent_hostname(name)
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self.changed = True
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def get_current_hostname(self):
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cmd = [self.hostname_cmd]
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@ -283,6 +315,59 @@ class RedHatStrategy(GenericStrategy):
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self.module.fail_json(msg="failed to update hostname: %s" %
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str(err))
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# ===========================================
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class AlpineStrategy(GenericStrategy):
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"""
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This is a Alpine Linux Hostname manipulation strategy class - it edits
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the /etc/hostname file then run hostname -F /etc/hostname.
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"""
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HOSTNAME_FILE = '/etc/hostname'
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def update_current_and_permanent_hostname(self):
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self.update_permanent_hostname()
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self.update_current_hostname()
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return self.changed
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def get_permanent_hostname(self):
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if not os.path.isfile(self.HOSTNAME_FILE):
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try:
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open(self.HOSTNAME_FILE, "a").write("")
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except IOError:
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err = get_exception()
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self.module.fail_json(msg="failed to write file: %s" %
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str(err))
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try:
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f = open(self.HOSTNAME_FILE)
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try:
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return f.read().strip()
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finally:
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f.close()
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except Exception:
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err = get_exception()
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self.module.fail_json(msg="failed to read hostname: %s" %
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str(err))
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def set_permanent_hostname(self, name):
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try:
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f = open(self.HOSTNAME_FILE, 'w+')
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try:
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f.write("%s\n" % name)
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finally:
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f.close()
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except Exception:
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err = get_exception()
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self.module.fail_json(msg="failed to update hostname: %s" %
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str(err))
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def set_current_hostname(self, name):
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cmd = [self.hostname_cmd, '-F', self.HOSTNAME_FILE]
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rc, out, err = self.module.run_command(cmd)
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if rc != 0:
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self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" %
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(rc, out, err))
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# ===========================================
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@ -617,6 +702,11 @@ class ALTLinuxHostname(Hostname):
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distribution = 'Altlinux'
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strategy_class = RedHatStrategy
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class AlpineLinuxHostname(Hostname):
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platform = 'Linux'
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distribution = 'Alpine'
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strategy_class = AlpineStrategy
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class OpenBSDHostname(Hostname):
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platform = 'OpenBSD'
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distribution = None
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@ -643,18 +733,8 @@ def main():
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)
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hostname = Hostname(module)
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changed = False
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name = module.params['name']
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current_name = hostname.get_current_hostname()
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if current_name != name:
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hostname.set_current_hostname(name)
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changed = True
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permanent_name = hostname.get_permanent_hostname()
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if permanent_name != name:
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hostname.set_permanent_hostname(name)
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changed = True
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changed = hostname.update_current_and_permanent_hostname()
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module.exit_json(changed=changed, name=name,
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ansible_facts=dict(ansible_hostname=name.split('.')[0],
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