diff options
Diffstat (limited to 'src/conf-mode/vyos-config-host-name.py')
| -rwxr-xr-x[-rw-r--r--] | src/conf-mode/vyos-config-host-name.py | 74 |
1 files changed, 40 insertions, 34 deletions
diff --git a/src/conf-mode/vyos-config-host-name.py b/src/conf-mode/vyos-config-host-name.py index da053d9f6..2a245b211 100644..100755 --- a/src/conf-mode/vyos-config-host-name.py +++ b/src/conf-mode/vyos-config-host-name.py @@ -19,64 +19,70 @@ import os import re import sys +import subprocess from vyos.config import Config from vyos.util import ConfigError -hostname_config = "/etc/hostname" -mailname_config = "/etc/mailname" hostname_regex = re.compile("^[A-Za-z0-9][-.A-Za-z0-9]*[A-Za-z0-9]$") def get_config(): conf = Config() - conf.set_level("system") - - hostname = conf.return_value("host-name") - domain = conf.return_value("domain-name") - return { - "hostname": hostname, - "domain": domain - } + hostname = conf.return_value("system host-name") + domain = conf.return_value("system domain-name") + + # No one likes fixups, but we really don't want VyOS fail to boot + # if hostname is not in the config + if not hostname: + hostname = "vyos" + + if domain: + fqdn = "{0}.{1}".format(hostname, domain) + else: + fqdn = hostname + + return {"hostname": hostname, "domain": domain, "fqdn": fqdn} def verify(config): - # check for invalid host + # check for invalid host - # pattern $VAR(@) "^[[:alnum:]][-.[:alnum:]]*[[:alnum:]]$" ; "invalid host name $VAR(@)" - valid = hostname_regex.match(config.hostname) - if (!valid): - raise ConfigError('invalid host name' + config.hostname) + # pattern $VAR(@) "^[[:alnum:]][-.[:alnum:]]*[[:alnum:]]$" ; "invalid host name $VAR(@)" + if not hostname_regex.match(config["hostname"]): + raise ConfigError('Invalid host name ' + config["hostname"]) - # pattern $VAR(@) "^.{1,63}$" ; "invalid host-name length" - length = len(config.hostname) - if length < 1 or length > 63: - raise ConfigError('invalid host-name length') + # pattern $VAR(@) "^.{1,63}$" ; "invalid host-name length" + length = len(config["hostname"]) + if length < 1 or length > 63: + raise ConfigError('Invalid host-name length, must be less than 63 characters') - return None + return None def generate(config): - mailname = config.hostname - if config.domain != "": - mailname += '.' + config.domain + # read the hosts file + with open('/etc/hosts', 'r') as f: + hosts = f.read() - # update /etc/hostname - with open(hostname_config, 'w') as f: - f.write(config.hostname) + # get the current hostname + old_hostname = subprocess.check_output(['hostname']).decode().strip() - # update /etc/mailname - with open(mailname_config, 'w') as f: - f.write(mailname) + # replace the local host line + hosts = re.sub(r"(127.0.1.1\s+{0}.*)".format(old_hostname), r"127.0.1.1\t{0} # VyOS entry\n".format(config["fqdn"]), hosts) - return None + with open('/etc/hosts', 'w') as f: + f.write(hosts) + + return None def apply(config): - # set hostname for the current session - cmd = "hostname " + config.hostname - os.system(cmd) + os.system("hostnamectl set-hostname {0}".format(config["fqdn"])) + + # restart services that use the hostname + os.system("systemctl restart rsyslog.service") - return None + return None if __name__ == '__main__': |