ipaclient_setup_nss: Create DNS SSHFP records, update to latest FreeIPA

There have been several settings in ipaclient_setup_nss that have been
hard coded instead of using the settings from the role. This has been
fixed and the code in ipaclient_setup_nss has been updated to the latest
version of FreeIPA with compatibility changes for older FreeIPA versions.
Additionally the api is now properly configured so that the DNS SSHFP
records are now properly created if no_dns_sshfp is not enabled.
This commit is contained in:
Thomas Woerner
2019-04-26 13:13:43 +02:00
parent c18b777141
commit 9148dde50a
4 changed files with 383 additions and 166 deletions

View File

@@ -13,7 +13,7 @@ ipaclient_ssh_trust_dns: no
ipaclient_no_ssh: no
ipaclient_no_sshd: no
ipaclient_no_sudo: no
#ipaclient_no_dns_sshfp: no
ipaclient_no_dns_sshfp: no
ipaclient_force: no
ipaclient_force_ntpd: no
ipaclient_no_nisdomain: no
@@ -24,6 +24,7 @@ ipassd_permit: no
ipassd_enable_dns_updates: no
ipassd_no_krb5_offline_passwords: no
ipassd_preserve_sssd: no
ipaclient_request_cert: no
### packages ###
ipaclient_install_packages: yes

View File

@@ -72,6 +72,67 @@ options:
required: false
type: bool
default: no
enable_dns_updates:
description: Configures the machine to attempt dns updates when the ip address changes.
required: false
type: bool
default: no
all_ip_addresses:
description: All routable IP addresses configured on any interface will be added to DNS
required: false
type: bool
default: no
ip_addresses:
description: Specify IP addresses that should be added to DNS.
required: false
type: list
default: None
request_cert:
description: request certificate for the machine
required: false
type: bool
default: no
preserve_sssd:
description: Preserve old SSSD configuration if possible
required: false
type: bool
default: no
no_ssh:
description: Do not configure OpenSSH client
required: false
type: bool
default: no
no_sshd:
description: Do not configure OpenSSH server
required: false
type: bool
default: no
no_sudo:
description: Do not configure SSSD as data source for sudo
required: false
type: bool
default: no
fixed_primary:
description: Configure sssd to use fixed server as primary IPA server
required: false
type: bool
default: no
permit:
description: Disable access rules by default, permit all access.
required: false
type: bool
default: no
no_krb5_offline_passwords:
description: Configure SSSD not to store user password when the server is offline
required: false
type: bool
default: no
no_dns_sshfp:
description: Do not automatically create DNS SSHFP records
required: false
type: bool
default: no
author:
- Thomas Woerner
'''
@@ -111,201 +172,328 @@ def main():
ca_enabled=dict(required=True, type='bool'),
mkhomedir=dict(required=False, type='bool'),
on_master=dict(required=False, type='bool'),
enable_dns_updates=dict(required=False, type='bool'),
all_ip_addresses=dict(required=False, type='bool', default=False),
ip_addresses=dict(required=False, type='list', default=None),
request_cert=dict(required=False, type='bool', default=False),
preserve_sssd=dict(required=False, type='bool'),
no_ssh=dict(required=False, type='bool'),
no_sshd=dict(required=False, type='bool'),
no_sudo=dict(required=False, type='bool'),
fixed_primary=dict(required=False, type='bool'),
permit=dict(required=False, type='bool'),
no_krb5_offline_passwords=dict(required=False, type='bool'),
no_dns_sshfp=dict(required=False, type='bool', default=False),
),
supports_check_mode = True,
)
module._ansible_debug = True
servers = module.params.get('servers')
realm = module.params.get('realm')
cli_server = module.params.get('servers')
cli_realm = module.params.get('realm')
hostname = module.params.get('hostname')
basedn = module.params.get('basedn')
domain = module.params.get('domain')
principal = module.params.get('principal')
cli_basedn = module.params.get('basedn')
cli_domain = module.params.get('domain')
options.principal = module.params.get('principal')
subject_base = module.params.get('subject_base')
ca_enabled = module.params.get('ca_enabled')
mkhomedir = module.params.get('mkhomedir')
on_master = module.params.get('on_master')
options.mkhomedir = module.params.get('mkhomedir')
options.on_master = module.params.get('on_master')
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
statestore = sysrestore.StateFile(paths.IPA_CLIENT_SYSRESTORE)
os.environ['KRB5CCNAME'] = paths.IPA_DNS_CCACHE
options.dns_updates = False
options.all_ip_addresses = False
options.ip_addresses = None
options.request_cert = False
options.dns_updates = module.params.get('enable_dns_updates')
options.all_ip_addresses = module.params.get('all_ip_addresses')
options.ip_addresses = ansible_module_get_parsed_ip_addresses(module)
options.request_cert = module.params.get('request_cert')
options.hostname = hostname
options.preserve_sssd = False
options.on_master = False
options.conf_ssh = True
options.conf_sshd = True
options.conf_sudo = True
options.primary = False
options.permit = False
options.krb5_offline_passwords = False
options.create_sshfp = True
options.host_name = hostname
options.preserve_sssd = module.params.get('preserve_sssd')
options.no_ssh = module.params.get('no_ssh')
options.conf_ssh = not options.no_ssh
options.no_sshd = module.params.get('no_sshd')
options.conf_sshd = not options.no_sshd
options.no_sudo = module.params.get('no_sudo')
options.conf_sudo = not options.no_sudo
options.primary = module.params.get('fixed_primary')
options.permit = module.params.get('permit')
options.no_krb5_offline_passwords = module.params.get(
'no_krb5_offline_passwords')
options.krb5_offline_passwords = not options.no_krb5_offline_passwords
options.no_dns_sshfp = module.params.get('no_dns_sshfp')
options.create_sshfp = not options.no_dns_sshfp
options.no_sssd = False
options.sssd = not options.no_sssd
options.no_ac = False
CCACHE_FILE = paths.IPA_DNS_CCACHE
api.bootstrap(context='cli_installer',
confdir=paths.ETC_IPA,
debug=False,
delegate=False)
api.finalize()
api.Backend.rpcclient.connect()
try:
api.Backend.rpcclient.forward('ping')
except errors.KerberosError as e:
# Cannot connect to the server due to Kerberos error, trying with
# delegate=True
api.Backend.rpcclient.disconnect()
api.Backend.rpcclient.connect(delegate=True)
api.Backend.rpcclient.forward('ping')
##########################################################################
# Create IPA NSS database
try:
create_ipa_nssdb()
except ipautil.CalledProcessError as e:
module.fail_json(msg="Failed to create IPA NSS database: %s" % e)
# Get CA certificates from the certificate store
try:
ca_certs = get_certs_from_ldap(servers[0], basedn, realm,
ca_enabled)
except errors.NoCertificateError:
if ca_enabled:
ca_subject = DN(('CN', 'Certificate Authority'), subject_base)
# Create IPA NSS database
try:
create_ipa_nssdb()
except ipautil.CalledProcessError as e:
raise ScriptError(
"Failed to create IPA NSS database: %s" % e,
rval=CLIENT_INSTALL_ERROR)
# Get CA certificates from the certificate store
try:
ca_certs = get_certs_from_ldap(cli_server[0], cli_basedn, cli_realm,
ca_enabled)
except errors.NoCertificateError:
if ca_enabled:
ca_subject = DN(('CN', 'Certificate Authority'), subject_base)
else:
ca_subject = None
ca_certs = certstore.make_compat_ca_certs(ca_certs, cli_realm,
ca_subject)
ca_certs_trust = [(c, n, certstore.key_policy_to_trust_flags(t, True, u))
for (c, n, t, u) in ca_certs]
if hasattr(paths, "KDC_CA_BUNDLE_PEM"):
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.KDC_CA_BUNDLE_PEM,
# mode=0o644
)
if hasattr(paths, "CA_BUNDLE_PEM"):
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.CA_BUNDLE_PEM,
# mode=0o644
)
# Add the CA certificates to the IPA NSS database
logger.debug("Adding CA certificates to the IPA NSS database.")
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
for cert, nickname, trust_flags in ca_certs_trust:
try:
ipa_db.add_cert(cert, nickname, trust_flags)
except CalledProcessError as e:
raise ScriptError(
"Failed to add %s to the IPA NSS database." % nickname,
rval=CLIENT_INSTALL_ERROR)
# Add the CA certificates to the platform-dependant systemwide CA store
tasks.insert_ca_certs_into_systemwide_ca_store(ca_certs)
if not options.on_master:
client_dns(cli_server[0], hostname, options)
configure_certmonger(fstore, subject_base, cli_realm, hostname,
options, ca_enabled)
if hasattr(paths, "SSH_CONFIG_DIR"):
ssh_config_dir = paths.SSH_CONFIG_DIR
else:
ca_subject = None
ca_certs = certstore.make_compat_ca_certs(ca_certs, realm,
ca_subject)
ca_certs_trust = [(c, n, certstore.key_policy_to_trust_flags(t, True, u))
for (c, n, t, u) in ca_certs]
if hasattr(paths, "KDC_CA_BUNDLE_PEM"):
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.KDC_CA_BUNDLE_PEM)
if hasattr(paths, "CA_BUNDLE_PEM"):
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.CA_BUNDLE_PEM)
# Add the CA certificates to the IPA NSS database
module.debug("Adding CA certificates to the IPA NSS database.")
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
for cert, nickname, trust_flags in ca_certs_trust:
try:
ipa_db.add_cert(cert, nickname, trust_flags)
except CalledProcessError as e:
module.fail_json(msg="Failed to add %s to the IPA NSS database." % nickname)
# Add the CA certificates to the platform-dependant systemwide CA store
tasks.insert_ca_certs_into_systemwide_ca_store(ca_certs)
if not on_master:
client_dns(servers[0], hostname, options)
configure_certmonger(fstore, subject_base, realm, hostname,
options, ca_enabled)
if hasattr(paths, "SSH_CONFIG_DIR"):
ssh_config_dir = paths.SSH_CONFIG_DIR
else:
ssh_config_dir = services.knownservices.sshd.get_config_dir()
update_ssh_keys(hostname, ssh_config_dir, options.create_sshfp)
try:
os.remove(paths.IPA_DNS_CCACHE)
except Exception:
pass
##########################################################################
# Name Server Caching Daemon. Disable for SSSD, use otherwise
# (if installed)
nscd = services.knownservices.nscd
if nscd.is_installed():
if NUM_VERSION < 40500:
save_state(nscd)
else:
save_state(nscd, statestore)
ssh_config_dir = services.knownservices.sshd.get_config_dir()
update_ssh_keys(hostname, ssh_config_dir, options.create_sshfp)
try:
nscd_service_action = 'stop'
nscd.stop()
os.remove(CCACHE_FILE)
except Exception:
module.warn("Failed to %s the %s daemon" %
(nscd_service_action, nscd.service_name))
pass
try:
nscd.disable()
except Exception:
module.warn("Failed to disable %s daemon. Disable it manually." %
argspec_save_state = inspect.getargspec(save_state)
# Name Server Caching Daemon. Disable for SSSD, use otherwise
# (if installed)
nscd = services.knownservices.nscd
if nscd.is_installed():
if "statestore" in argspec_save_state.args:
save_state(nscd, statestore)
else:
save_state(nscd)
nscd_service_action = None
try:
if options.sssd:
nscd_service_action = 'stop'
nscd.stop()
else:
nscd_service_action = 'restart'
nscd.restart()
except Exception:
logger.warning(
"Failed to %s the %s daemon",
nscd_service_action, nscd.service_name)
if not options.sssd:
logger.warning(
"Caching of users/groups will not be available")
try:
if options.sssd:
nscd.disable()
else:
nscd.enable()
except Exception:
if not options.sssd:
logger.warning(
"Failed to configure automatic startup of the %s daemon",
nscd.service_name)
logger.info(
"Caching of users/groups will not be "
"available after reboot")
else:
logger.warning(
"Failed to disable %s daemon. Disable it manually.",
nscd.service_name)
nslcd = services.knownservices.nslcd
if nslcd.is_installed():
if NUM_VERSION < 40500:
save_state(nslcd)
else:
save_state(nslcd, statestore)
# this is optional service, just log
if not options.sssd:
logger.info(
"%s daemon is not installed, skip configuration",
nscd.service_name)
##########################################################################
# Modify nsswitch/pam stack
tasks.modify_nsswitch_pam_stack(sssd=True,
mkhomedir=mkhomedir,
statestore=statestore)
module.log("SSSD enabled")
argspec = inspect.getargspec(services.service)
if len(argspec.args) > 1:
sssd = services.service('sssd', api)
else:
sssd = services.service('sssd')
try:
sssd.restart()
except CalledProcessError:
module.warn("SSSD service restart was unsuccessful.")
try:
sssd.enable()
except CalledProcessError as e:
module.warn(
"Failed to enable automatic startup of the SSSD daemon: "
"%s", e)
if configure_openldap_conf(fstore, basedn, servers):
module.log("Configured /etc/openldap/ldap.conf")
else:
module.log("Failed to configure /etc/openldap/ldap.conf")
# Check that nss is working properly
if not on_master:
user = principal
if user is None or user == "":
user = "admin@%s" % domain
module.log("Principal is not set when enrolling with OTP"
"; using principal '%s' for 'getent passwd'" % user)
elif '@' not in user:
user = "%s@%s" % (user, domain)
n = 0
found = False
# Loop for up to 10 seconds to see if nss is working properly.
# It can sometimes take a few seconds to connect to the remote
# provider.
# Particulary, SSSD might take longer than 6-8 seconds.
while n < 10 and not found:
try:
ipautil.run([paths.GETENT if hasattr(paths, "GETENT") else "getent", "passwd", user])
found = True
except Exception as e:
time.sleep(1)
n = n + 1
if not found:
module.fail_json(msg="Unable to find '%s' user with 'getent "
"passwd %s'!" % (user.split("@")[0], user))
if conf:
module.log("Recognized configuration: %s" % conf)
nslcd = services.knownservices.nslcd
if nslcd.is_installed():
if "statestore" in argspec_save_state.args:
save_state(nslcd, statestore)
else:
module.fail_json(msg=
"Unable to reliably detect "
"configuration. Check NSS setup manually.")
save_state(nslcd)
try:
hardcode_ldap_server(servers)
except Exception as e:
module.fail_json(msg="Adding hardcoded server name to "
"/etc/ldap.conf failed: %s" % str(e))
retcode, conf = (0, None)
if not options.no_ac:
# Modify nsswitch/pam stack
argspec = inspect.getargspec(tasks.modify_nsswitch_pam_stack)
if "sudo" in argspec.args:
tasks.modify_nsswitch_pam_stack(
sssd=options.sssd,
mkhomedir=options.mkhomedir,
statestore=statestore,
sudo=options.conf_sudo
)
else:
tasks.modify_nsswitch_pam_stack(
sssd=options.sssd,
mkhomedir=options.mkhomedir,
statestore=statestore
)
if hasattr(paths, "AUTHSELECT") and paths.AUTHSELECT is not None:
# authselect is used
# if mkhomedir, make sure oddjobd is enabled and started
if options.mkhomedir:
oddjobd = services.service('oddjobd', api)
running = oddjobd.is_running()
enabled = oddjobd.is_enabled()
statestore.backup_state('oddjobd', 'running', running)
statestore.backup_state('oddjobd', 'enabled', enabled)
try:
if not enabled:
oddjobd.enable()
if not running:
oddjobd.start()
except Exception as e:
logger.critical("Unable to start oddjobd: %s", str(e))
logger.info("%s enabled", "SSSD" if options.sssd else "LDAP")
if options.sssd:
sssd = services.service('sssd', api)
try:
sssd.restart()
except CalledProcessError:
logger.warning("SSSD service restart was unsuccessful.")
try:
sssd.enable()
except CalledProcessError as e:
logger.warning(
"Failed to enable automatic startup of the SSSD daemon: "
"%s", e)
if not options.sssd:
tasks.modify_pam_to_use_krb5(statestore)
logger.info("Kerberos 5 enabled")
# Update non-SSSD LDAP configuration after authconfig calls as it would
# change its configuration otherways
if not options.sssd:
for configurer in [configure_ldap_conf, configure_nslcd_conf]:
(retcode, conf, filenames) = configurer(
fstore, cli_basedn, cli_realm,
cli_domain, cli_server, dnsok,
options, nosssd_files[configurer.__name__])
if retcode:
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
if conf:
logger.info(
"%s configured using configuration file(s) %s",
conf, filenames)
if configure_openldap_conf(fstore, cli_basedn, cli_server):
logger.info("Configured /etc/openldap/ldap.conf")
else:
logger.info("Failed to configure /etc/openldap/ldap.conf")
# Check that nss is working properly
if not options.on_master:
user = options.principal
if user is None:
user = "admin@%s" % cli_domain
logger.info("Principal is not set when enrolling with OTP"
"; using principal '%s' for 'getent passwd'",
user)
elif '@' not in user:
user = "%s@%s" % (user, cli_domain)
n = 0
found = False
# Loop for up to 10 seconds to see if nss is working properly.
# It can sometimes take a few seconds to connect to the remote
# provider.
# Particulary, SSSD might take longer than 6-8 seconds.
while n < 10 and not found:
try:
ipautil.run([paths.GETENT, "passwd", user])
found = True
except Exception as e:
time.sleep(1)
n = n + 1
if not found:
logger.error("Unable to find '%s' user with 'getent "
"passwd %s'!", user.split("@")[0], user)
if conf:
logger.info("Recognized configuration: %s", conf)
else:
logger.error(
"Unable to reliably detect "
"configuration. Check NSS setup manually.")
try:
hardcode_ldap_server(cli_server)
except Exception as e:
logger.error(
"Adding hardcoded server name to "
"/etc/ldap.conf failed: %s", str(e))
except ScriptError as e:
module.fail_json(msg=str(e))
##########################################################################

View File

@@ -235,3 +235,19 @@ else:
raise Exception("freeipa version '%s' is too old" % VERSION)
def ansible_module_get_parsed_ip_addresses(ansible_module,
param='ip_addresses'):
ip_addresses = ansible_module.params.get(param)
if ip_addresses is None:
return None
ip_addrs = [ ]
for ip in ip_addresses:
try:
ip_parsed = ipautil.CheckedIPAddress(ip)
except Exception as e:
ansible_module.fail_json(msg="Invalid IP Address %s: %s" % (ip, e))
ip_addrs.append(ip_parsed)
return ip_addrs

View File

@@ -267,6 +267,18 @@
mkhomedir: "{{ ipaclient_mkhomedir }}"
ca_enabled: "{{ result_ipaclient_api.ca_enabled }}"
on_master: "{{ ipaclient_on_master }}"
enable_dns_updates: "{{ ipassd_enable_dns_updates }}"
all_ip_addresses: "{{ ipaclient_all_ip_addresses }}"
ip_addresses: "{{ ipaclient_ip_addresses | default(omit) }}"
request_cert: "{{ ipaclient_request_cert }}"
preserve_sssd: "{{ ipassd_preserve_sssd }}"
no_ssh: "{{ ipaclient_no_ssh }}"
no_sshd: "{{ ipaclient_no_sshd }}"
no_sudo: "{{ ipaclient_no_sudo }}"
fixed_primary: "{{ ipassd_fixed_primary }}"
permit: "{{ ipassd_permit }}"
no_krb5_offline_passwords: "{{ ipassd_no_krb5_offline_passwords }}"
no_dns_sshfp: "{{ ipaclient_no_dns_sshfp }}"
- name: Install - Configure SSH and SSHD
ipaclient_setup_ssh: