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ansible-freeipa/roles/ipaclient/library/ipaclient_setup_nss.py
Thomas Woerner d31a132a59 ipa[server,replica,client]: setup_logging wrapper for standard_logging_setup 
The import of ansible_ipa_server, ansible_ipa_replica and ansible_ipa_client
might result in a permission denied error for the log file. It seems that
for collections the module utils seem to be loaded before the needed
permissions are aquired now.

The fix simply adds a wrapper for standard_logging_setup that is called in
all the modules of the server, replica and client roles to do the loggin
setup as one of the first steps of the module execution and not before.
2020-03-20 13:55:42 +01:00

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Authors:
# Thomas Woerner <twoerner@redhat.com>
#
# Based on ipa-client-install code
#
# Copyright (C) 2017 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
ANSIBLE_METADATA = {
'metadata_version': '1.0',
'supported_by': 'community',
'status': ['preview'],
}
DOCUMENTATION = '''
---
module: ipaclient_setup_nss
short description: Create IPA client NSS database
description:
Create IPA NSS database
options:
servers:
description: Fully qualified name of IPA servers to enroll to
required: no
domain:
description: Primary DNS domain of the IPA deployment
required: no
realm:
description: Kerberos realm name of the IPA deployment
required: no
hostname:
description: Fully qualified name of this host
required: no
basedn:
description: The basedn of the IPA server (of the form dc=example,dc=com)
required: no
principal:
description:
User Principal allowed to promote replicas and join IPA realm
required: yes
subject_base:
description:
The certificate subject base (default O=<realm-name>).
RDNs are in LDAP order (most specific RDN first).
required: no
ca_enabled:
description: Whether the Certificate Authority is enabled or not
required: no
mkhomedir:
description: Create home directories for users on their first login
required: yes
on_master:
description: Whether the configuration is done on the master or not
required: yes
dnsok:
description: The installer dnsok setting
required: yes
enable_dns_updates:
description:
Configures the machine to attempt dns updates when the ip address
changes
required: yes
all_ip_addresses:
description:
All routable IP addresses configured on any interface will be added
to DNS
required: yes
ip_addresses:
description: List of Master Server IP Addresses
required: yes
request_cert:
description: Request certificate for the machine
required: yes
preserve_sssd:
description: Preserve old SSSD configuration if possible
required: yes
no_ssh:
description: Do not configure OpenSSH client
required: yes
no_sshd:
description: Do not configure OpenSSH server
required: yes
no_sudo:
description: Do not configure SSSD as data source for sudo
required: yes
fixed_primary:
description: Configure sssd to use fixed server as primary IPA server
required: yes
permit:
description: Disable access rules by default, permit all access
required: yes
no_krb5_offline_passwords:
description:
Configure SSSD not to store user password when the server is offline
required: yes
no_dns_sshfp:
description: Do not automatically create DNS SSHFP records
required: yes
author:
- Thomas Woerner
'''
EXAMPLES = '''
- name: Create IPA client NSS database
ipaclient_setup_nss:
servers: ["server1.example.com","server2.example.com"]
domain: example.com
realm: EXAMPLE.COM
basedn: dc=example,dc=com
hostname: client1.example.com
subject_base: O=EXAMPLE.COM
principal: admin
ca_enabled: yes
'''
RETURN = '''
'''
import os
import time
import inspect
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.ansible_ipa_client import (
setup_logging,
options, sysrestore, paths, ansible_module_get_parsed_ip_addresses,
api, errors, create_ipa_nssdb, ipautil, ScriptError, CLIENT_INSTALL_ERROR,
get_certs_from_ldap, DN, certstore, x509, logger, certdb,
CalledProcessError, tasks, client_dns, configure_certmonger, services,
update_ssh_keys, save_state, configure_ldap_conf, configure_nslcd_conf,
nosssd_files, configure_openldap_conf, hardcode_ldap_server
)
def main():
module = AnsibleModule(
argument_spec=dict(
servers=dict(required=True, type='list'),
domain=dict(required=True),
realm=dict(required=True),
hostname=dict(required=True),
basedn=dict(required=True),
principal=dict(required=False),
subject_base=dict(required=True),
ca_enabled=dict(required=True, type='bool'),
mkhomedir=dict(required=False, type='bool'),
on_master=dict(required=False, type='bool'),
dnsok=dict(required=False, type='bool', default=False),
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
setup_logging()
cli_server = module.params.get('servers')
cli_realm = module.params.get('realm')
hostname = module.params.get('hostname')
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')
options.mkhomedir = module.params.get('mkhomedir')
options.on_master = module.params.get('on_master')
dnsok = module.params.get('dnsok')
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
statestore = sysrestore.StateFile(paths.IPA_CLIENT_SYSRESTORE)
os.environ['KRB5CCNAME'] = paths.IPA_DNS_CCACHE
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.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:
# 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')
##########################################################################
try:
# 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:
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:
ssh_config_dir = services.knownservices.sshd.get_config_dir()
update_ssh_keys(hostname, ssh_config_dir, options.create_sshfp)
try:
os.remove(CCACHE_FILE)
except Exception:
pass
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)
else:
# this is optional service, just log
if not options.sssd:
logger.info(
"%s daemon is not installed, skip configuration",
nscd.service_name)
nslcd = services.knownservices.nslcd
if nslcd.is_installed():
if "statestore" in argspec_save_state.args:
save_state(nslcd, statestore)
else:
save_state(nslcd)
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.
if hasattr(paths, "GETENT"):
getent_cmd = paths.GETENT
else:
getent_cmd = '/usr/bin/getent'
while n < 10 and not found:
try:
ipautil.run([getent_cmd, "passwd", user])
found = True
except Exception:
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))
##########################################################################
module.exit_json(changed=True,
ca_enabled_ra=ca_enabled)
if __name__ == '__main__':
main()
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