mirror of
https://github.com/freeipa/ansible-freeipa.git
synced 2026-06-10 18:55:53 +00:00
6b5acd9b0c
A temporary krb5 configuration was used to join the domain in ipaclient_join. After that the final krkb5 configuration was created with enabled DNS discovery and used for the remainaing tasks, where also a connection to the IPA API was done. With several servers the DNS discovery could have picked up a different server. If the client deployment was faster than the replication this could have lead to an unknown host error. The issue was seen in performance testing where many simultaneous client enrollments have been done.. The goal is to keep server affinity as long as possible within the deployment process: The temporary krb5.conf that was used before in ipaclient_join was pulled out into an own module. The generated temporary krb5.conf is now used in ipaclient_join and also ipaclient_api. The generation of the final krb5.conf is moved to the end of the deployment process. Same as: https://pagure.io/freeipa/issue/9228 The setup of certmonger has been pulled out of ipaclient_setup_nss and moved to the end of the process after generating the final krb5.conf as it will use t will only use /etc/krb5.conf. Certificate issuance may fail during deployment due to using the final krb5.conf, but certmonger will re-try the request in this case. Same as: https://pagure.io/freeipa/issue/9246
558 lines
20 KiB
Python
558 lines
20 KiB
Python
# -*- coding: utf-8 -*-
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# Authors:
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# Thomas Woerner <twoerner@redhat.com>
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#
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# Based on ipa-client-install code
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#
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# Copyright (C) 2017-2022 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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ANSIBLE_METADATA = {
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'metadata_version': '1.0',
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'supported_by': 'community',
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'status': ['preview'],
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}
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DOCUMENTATION = '''
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---
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module: ipaclient_setup_nss
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short_description: Create IPA client NSS database
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description: Create IPA NSS database
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options:
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servers:
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description: Fully qualified name of IPA servers to enroll to
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type: list
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elements: str
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required: yes
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domain:
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description: Primary DNS domain of the IPA deployment
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type: str
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required: yes
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realm:
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description: Kerberos realm name of the IPA deployment
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type: str
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required: yes
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hostname:
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description: Fully qualified name of this host
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type: str
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required: yes
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basedn:
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description: The basedn of the IPA server (of the form dc=example,dc=com)
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type: str
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required: yes
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principal:
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description:
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User Principal allowed to promote replicas and join IPA realm
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type: str
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required: no
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subject_base:
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description: |
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The certificate subject base (default O=<realm-name>).
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RDNs are in LDAP order (most specific RDN first).
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type: str
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required: yes
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ca_enabled:
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description: Whether the Certificate Authority is enabled or not
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type: bool
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required: yes
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mkhomedir:
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description: Create home directories for users on their first login
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type: bool
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required: no
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on_master:
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description: Whether the configuration is done on the master or not
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type: bool
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required: no
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dnsok:
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description: The installer dnsok setting
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type: bool
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required: no
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default: no
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enable_dns_updates:
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description: |
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Configures the machine to attempt dns updates when the ip address
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changes
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type: bool
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required: no
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all_ip_addresses:
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description: |
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All routable IP addresses configured on any interface will be added
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to DNS
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type: bool
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required: no
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default: no
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ip_addresses:
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description: List of Master Server IP Addresses
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type: list
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elements: str
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required: no
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request_cert:
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description: Request certificate for the machine
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type: bool
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required: no
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default: no
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preserve_sssd:
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description: Preserve old SSSD configuration if possible
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type: bool
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required: no
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no_ssh:
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description: Do not configure OpenSSH client
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type: bool
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required: no
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no_sshd:
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description: Do not configure OpenSSH server
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type: bool
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required: no
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no_sudo:
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description: Do not configure SSSD as data source for sudo
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type: bool
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required: no
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fixed_primary:
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description: Configure sssd to use fixed server as primary IPA server
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type: bool
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required: no
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permit:
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description: Disable access rules by default, permit all access
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type: bool
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required: no
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no_krb5_offline_passwords:
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description:
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Configure SSSD not to store user password when the server is offline
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type: bool
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required: no
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no_dns_sshfp:
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description: Do not automatically create DNS SSHFP records
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type: bool
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required: no
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default: no
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nosssd_files:
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description: >
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The dist of nss_ldap or nss-pam-ldapd files if sssd is disabled
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required: yes
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type: dict
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author:
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- Thomas Woerner (@t-woerner)
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'''
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EXAMPLES = '''
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- name: Create IPA client NSS database
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ipaclient_setup_nss:
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servers: ["server1.example.com","server2.example.com"]
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domain: example.com
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realm: EXAMPLE.COM
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basedn: dc=example,dc=com
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hostname: client1.example.com
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subject_base: O=EXAMPLE.COM
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principal: admin
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ca_enabled: yes
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'''
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RETURN = '''
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'''
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import os
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import time
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.ansible_ipa_client import (
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setup_logging, check_imports,
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options, sysrestore, paths, ansible_module_get_parsed_ip_addresses,
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api, errors, create_ipa_nssdb, ipautil, ScriptError, CLIENT_INSTALL_ERROR,
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get_certs_from_ldap, DN, certstore, x509, logger, certdb,
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CalledProcessError, tasks, client_dns, services,
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update_ssh_keys, save_state, configure_ldap_conf, configure_nslcd_conf,
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configure_openldap_conf, hardcode_ldap_server, getargspec, NUM_VERSION,
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serialization
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)
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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servers=dict(required=True, type='list', elements='str'),
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domain=dict(required=True, type='str'),
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realm=dict(required=True, type='str'),
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hostname=dict(required=True, type='str'),
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basedn=dict(required=True, type='str'),
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principal=dict(required=False, type='str'),
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subject_base=dict(required=True, type='str'),
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ca_enabled=dict(required=True, type='bool'),
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mkhomedir=dict(required=False, type='bool'),
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on_master=dict(required=False, type='bool'),
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dnsok=dict(required=False, type='bool', default=False),
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enable_dns_updates=dict(required=False, type='bool'),
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all_ip_addresses=dict(required=False, type='bool', default=False),
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ip_addresses=dict(required=False, type='list', elements='str',
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default=None),
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request_cert=dict(required=False, type='bool', default=False),
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preserve_sssd=dict(required=False, type='bool'),
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no_ssh=dict(required=False, type='bool'),
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no_sshd=dict(required=False, type='bool'),
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no_sudo=dict(required=False, type='bool'),
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fixed_primary=dict(required=False, type='bool'),
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permit=dict(required=False, type='bool'),
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no_krb5_offline_passwords=dict(required=False, type='bool'),
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no_dns_sshfp=dict(required=False, type='bool', default=False),
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nosssd_files=dict(required=True, type='dict'),
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),
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supports_check_mode=False,
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)
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module._ansible_debug = True
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check_imports(module)
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setup_logging()
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cli_server = module.params.get('servers')
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cli_realm = module.params.get('realm')
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hostname = module.params.get('hostname')
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cli_basedn = module.params.get('basedn')
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cli_domain = module.params.get('domain')
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options.principal = module.params.get('principal')
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subject_base = module.params.get('subject_base')
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ca_enabled = module.params.get('ca_enabled')
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options.mkhomedir = module.params.get('mkhomedir')
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options.on_master = module.params.get('on_master')
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dnsok = module.params.get('dnsok')
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fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
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statestore = sysrestore.StateFile(paths.IPA_CLIENT_SYSRESTORE)
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os.environ['KRB5CCNAME'] = paths.IPA_DNS_CCACHE
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options.dns_updates = module.params.get('enable_dns_updates')
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options.all_ip_addresses = module.params.get('all_ip_addresses')
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options.ip_addresses = ansible_module_get_parsed_ip_addresses(module)
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options.request_cert = module.params.get('request_cert')
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options.hostname = hostname
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options.host_name = hostname
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options.preserve_sssd = module.params.get('preserve_sssd')
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options.no_ssh = module.params.get('no_ssh')
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options.conf_ssh = not options.no_ssh
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options.no_sshd = module.params.get('no_sshd')
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options.conf_sshd = not options.no_sshd
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options.no_sudo = module.params.get('no_sudo')
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options.conf_sudo = not options.no_sudo
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options.primary = module.params.get('fixed_primary')
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options.permit = module.params.get('permit')
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options.no_krb5_offline_passwords = module.params.get(
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'no_krb5_offline_passwords')
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options.krb5_offline_passwords = not options.no_krb5_offline_passwords
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options.no_dns_sshfp = module.params.get('no_dns_sshfp')
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options.create_sshfp = not options.no_dns_sshfp
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options.no_sssd = False
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options.sssd = not options.no_sssd
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options.no_ac = False
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nosssd_files = module.params.get('nosssd_files')
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# pylint: disable=invalid-name
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CCACHE_FILE = paths.IPA_DNS_CCACHE
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api.bootstrap(context='cli_installer',
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confdir=paths.ETC_IPA,
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debug=False,
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delegate=False)
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api.finalize()
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api.Backend.rpcclient.connect()
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try:
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api.Backend.rpcclient.forward('ping')
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except errors.KerberosError:
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# Cannot connect to the server due to Kerberos error, trying with
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# delegate=True
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api.Backend.rpcclient.disconnect()
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api.Backend.rpcclient.connect(delegate=True)
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api.Backend.rpcclient.forward('ping')
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##########################################################################
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try:
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# Create IPA NSS database
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try:
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create_ipa_nssdb()
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except ipautil.CalledProcessError as e:
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raise ScriptError(
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"Failed to create IPA NSS database: %s" % e,
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rval=CLIENT_INSTALL_ERROR)
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# Get CA certificates from the certificate store
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try:
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ca_certs = get_certs_from_ldap(cli_server[0], cli_basedn,
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cli_realm, ca_enabled)
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except errors.NoCertificateError:
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if ca_enabled:
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ca_subject = DN(('CN', 'Certificate Authority'), subject_base)
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else:
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ca_subject = None
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# Set ca_certs
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# Copied from ipaclient_api
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ca_certs = x509.load_certificate_list_from_file(paths.IPA_CA_CRT)
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if 40500 <= NUM_VERSION < 40590:
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ca_certs = [cert.public_bytes(serialization.Encoding.DER)
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for cert in ca_certs]
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elif NUM_VERSION < 40500:
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ca_certs = [cert.der_data for cert in ca_certs]
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# Copied from ipaclient_api
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ca_certs = certstore.make_compat_ca_certs(ca_certs, cli_realm,
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ca_subject)
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ca_certs_trust = [(c, n,
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certstore.key_policy_to_trust_flags(t, True, u))
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for (c, n, t, u) in ca_certs]
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if hasattr(paths, "KDC_CA_BUNDLE_PEM"):
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x509.write_certificate_list(
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[c for c, n, t, u in ca_certs if t is not False],
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paths.KDC_CA_BUNDLE_PEM,
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# mode=0o644
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)
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if hasattr(paths, "CA_BUNDLE_PEM"):
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x509.write_certificate_list(
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[c for c, n, t, u in ca_certs if t is not False],
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paths.CA_BUNDLE_PEM,
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# mode=0o644
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)
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# Add the CA certificates to the IPA NSS database
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logger.debug("Adding CA certificates to the IPA NSS database.")
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ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
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for cert, nickname, trust_flags in ca_certs_trust:
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try:
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ipa_db.add_cert(cert, nickname, trust_flags)
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except CalledProcessError:
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raise ScriptError(
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"Failed to add %s to the IPA NSS database." % nickname,
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rval=CLIENT_INSTALL_ERROR)
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# Add the CA certificates to the platform-dependant systemwide CA
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# store
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tasks.insert_ca_certs_into_systemwide_ca_store(ca_certs)
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if not options.on_master:
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client_dns(cli_server[0], hostname, options)
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if hasattr(paths, "SSH_CONFIG_DIR"):
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ssh_config_dir = paths.SSH_CONFIG_DIR
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else:
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ssh_config_dir = services.knownservices.sshd.get_config_dir()
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update_ssh_keys(hostname, ssh_config_dir, options.create_sshfp)
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try:
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os.remove(CCACHE_FILE)
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except Exception:
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pass
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# pylint: disable=deprecated-method
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argspec_save_state = getargspec(save_state)
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# Name Server Caching Daemon. Disable for SSSD, use otherwise
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# (if installed)
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nscd = services.knownservices.nscd
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if nscd.is_installed():
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if "statestore" in argspec_save_state.args:
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save_state(nscd, statestore)
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else:
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save_state(nscd)
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nscd_service_action = None
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try:
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if options.sssd:
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nscd_service_action = 'stop'
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nscd.stop()
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else:
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nscd_service_action = 'restart'
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nscd.restart()
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except Exception:
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logger.warning(
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"Failed to %s the %s daemon",
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nscd_service_action, nscd.service_name)
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if not options.sssd:
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logger.warning(
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"Caching of users/groups will not be available")
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try:
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if options.sssd:
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nscd.disable()
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else:
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nscd.enable()
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except Exception:
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if not options.sssd:
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logger.warning(
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"Failed to configure automatic startup of the %s "
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"daemon",
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nscd.service_name)
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logger.info(
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"Caching of users/groups will not be "
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"available after reboot")
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else:
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logger.warning(
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"Failed to disable %s daemon. Disable it manually.",
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nscd.service_name)
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else:
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# this is optional service, just log
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if not options.sssd:
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logger.info(
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"%s daemon is not installed, skip configuration",
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nscd.service_name)
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nslcd = services.knownservices.nslcd
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if nslcd.is_installed():
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if "statestore" in argspec_save_state.args:
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save_state(nslcd, statestore)
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else:
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save_state(nslcd)
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retcode, conf = (0, None)
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if not options.no_ac:
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# Modify nsswitch/pam stack
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# pylint: disable=deprecated-method
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argspec = getargspec(tasks.modify_nsswitch_pam_stack)
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if "sudo" in argspec.args:
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tasks.modify_nsswitch_pam_stack(
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sssd=options.sssd,
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mkhomedir=options.mkhomedir,
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statestore=statestore,
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sudo=options.conf_sudo
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)
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else:
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tasks.modify_nsswitch_pam_stack(
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sssd=options.sssd,
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mkhomedir=options.mkhomedir,
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statestore=statestore
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)
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if hasattr(paths, "AUTHSELECT") and paths.AUTHSELECT is not None:
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# authselect is used
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# if mkhomedir, make sure oddjobd is enabled and started
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if options.mkhomedir:
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oddjobd = services.service('oddjobd', api)
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running = oddjobd.is_running()
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enabled = oddjobd.is_enabled()
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statestore.backup_state('oddjobd', 'running', running)
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statestore.backup_state('oddjobd', 'enabled', enabled)
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try:
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if not enabled:
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oddjobd.enable()
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if not running:
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oddjobd.start()
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except Exception as e:
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logger.critical("Unable to start oddjobd: %s", str(e))
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logger.info("%s enabled", "SSSD" if options.sssd else "LDAP")
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if options.sssd:
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sssd = services.service('sssd', api)
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try:
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sssd.restart()
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except CalledProcessError:
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logger.warning("SSSD service restart was unsuccessful.")
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try:
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sssd.enable()
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except CalledProcessError as e:
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logger.warning(
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"Failed to enable automatic startup of the SSSD "
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"daemon: %s", e)
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if not options.sssd:
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tasks.modify_pam_to_use_krb5(statestore)
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logger.info("Kerberos 5 enabled")
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# Update non-SSSD LDAP configuration after authconfig calls as it
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# would change its configuration otherways
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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()
|