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author | Hiroaki Nakamura <hnakamur@users.noreply.github.com> | 2016-10-24 23:58:41 +0900 |
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committer | René Moser <mail@renemoser.net> | 2016-10-24 16:58:41 +0200 |
commit | 1072555cc9d730dc1540e0e24758e6c63ecbd1c9 (patch) | |
tree | 7ed1ff186e1aa913ab738a9a1eb1a48c1d9cf080 /system | |
parent | 087ba94e6ba731423eb36a5eefc520d468730394 (diff) | |
download | ansible-modules-core-1072555cc9d730dc1540e0e24758e6c63ecbd1c9.tar.gz |
hostname: add support for alpine linux (#4837)
* Add update_current_and_permanent_hostname to the hostname module
* Add support for Alpine Linux to the hostname module
Diffstat (limited to 'system')
-rw-r--r-- | system/hostname.py | 104 |
1 files changed, 92 insertions, 12 deletions
diff --git a/system/hostname.py b/system/hostname.py index 1e9354b9..4c4285f6 100644 --- a/system/hostname.py +++ b/system/hostname.py @@ -29,7 +29,7 @@ short_description: Manage hostname requirements: [ hostname ] description: - Set system's hostname. - - Currently implemented on Debian, Ubuntu, Fedora, RedHat, openSUSE, Linaro, ScientificLinux, Arch, CentOS, AMI. + - Currently implemented on Debian, Ubuntu, Fedora, RedHat, openSUSE, Linaro, ScientificLinux, Arch, CentOS, AMI, Alpine Linux. - Any distribution that uses systemd as their init system. - Note, this module does *NOT* modify /etc/hosts. You need to modify it yourself using other modules like template or replace. options: @@ -56,6 +56,15 @@ class UnimplementedStrategy(object): def __init__(self, module): self.module = module + def update_current_and_permanent_hostname(self): + self.unimplemented_error() + + def update_current_hostname(self): + self.unimplemented_error() + + def update_permanent_hostname(self): + self.unimplemented_error() + def get_current_hostname(self): self.unimplemented_error() @@ -103,6 +112,9 @@ class Hostname(object): else: self.strategy = self.strategy_class(module) + def update_current_and_permanent_hostname(self): + return self.strategy.update_current_and_permanent_hostname() + def get_current_hostname(self): return self.strategy.get_current_hostname() @@ -129,6 +141,26 @@ class GenericStrategy(object): def __init__(self, module): self.module = module self.hostname_cmd = self.module.get_bin_path('hostname', True) + self.changed = False + + def update_current_and_permanent_hostname(self): + self.update_current_hostname() + self.update_permanent_hostname() + return self.changed + + def update_current_hostname(self): + name = self.module.params['name'] + current_name = self.get_current_hostname() + if current_name != name: + self.set_current_hostname(name) + self.changed = True + + def update_permanent_hostname(self): + name = self.module.params['name'] + permanent_name = self.get_permanent_hostname() + if permanent_name != name: + self.set_permanent_hostname(name) + self.changed = True def get_current_hostname(self): cmd = [self.hostname_cmd] @@ -283,6 +315,59 @@ class RedHatStrategy(GenericStrategy): self.module.fail_json(msg="failed to update hostname: %s" % str(err)) +# =========================================== + +class AlpineStrategy(GenericStrategy): + """ + This is a Alpine Linux Hostname manipulation strategy class - it edits + the /etc/hostname file then run hostname -F /etc/hostname. + """ + + HOSTNAME_FILE = '/etc/hostname' + + def update_current_and_permanent_hostname(self): + self.update_permanent_hostname() + self.update_current_hostname() + return self.changed + + def get_permanent_hostname(self): + if not os.path.isfile(self.HOSTNAME_FILE): + try: + open(self.HOSTNAME_FILE, "a").write("") + except IOError: + err = get_exception() + self.module.fail_json(msg="failed to write file: %s" % + str(err)) + try: + f = open(self.HOSTNAME_FILE) + try: + return f.read().strip() + finally: + f.close() + except Exception: + err = get_exception() + self.module.fail_json(msg="failed to read hostname: %s" % + str(err)) + + def set_permanent_hostname(self, name): + try: + f = open(self.HOSTNAME_FILE, 'w+') + try: + f.write("%s\n" % name) + finally: + f.close() + except Exception: + err = get_exception() + self.module.fail_json(msg="failed to update hostname: %s" % + str(err)) + + def set_current_hostname(self, name): + cmd = [self.hostname_cmd, '-F', self.HOSTNAME_FILE] + rc, out, err = self.module.run_command(cmd) + if rc != 0: + self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" % + (rc, out, err)) + # =========================================== @@ -617,6 +702,11 @@ class ALTLinuxHostname(Hostname): distribution = 'Altlinux' strategy_class = RedHatStrategy +class AlpineLinuxHostname(Hostname): + platform = 'Linux' + distribution = 'Alpine' + strategy_class = AlpineStrategy + class OpenBSDHostname(Hostname): platform = 'OpenBSD' distribution = None @@ -643,18 +733,8 @@ def main(): ) hostname = Hostname(module) - - changed = False name = module.params['name'] - current_name = hostname.get_current_hostname() - if current_name != name: - hostname.set_current_hostname(name) - changed = True - - permanent_name = hostname.get_permanent_hostname() - if permanent_name != name: - hostname.set_permanent_hostname(name) - changed = True + changed = hostname.update_current_and_permanent_hostname() module.exit_json(changed=changed, name=name, ansible_facts=dict(ansible_hostname=name.split('.')[0], |