SSSD 与 Microsoft AD 集成以实现基于 SSH 密钥的登录
SSSD Integration with Microsoft AD for SSH Key based Login
我已经在使用 Realm 连接到 Microsoft AD Forest 的 linux 机器上配置了 SSSD。
我的最终目标是使用存储在 Microsoft AD 中的 SSH 密钥登录 CentOS 机器
以下是设置详细信息：
- EC2 Windows 适用于 Microsoft AD
- 配置了 SSSD 的 EC2 Amazon Linux
我可以使用 AD 用户名和密码登录 linux 机器。
我现在已经将 SSH Public 密钥存储在 Microsoft AD altSecurityIdentities 用户属性以及 sshPublicKeys属性。
下面是 SSSD 的配置文件
[sssd]
domains = test.com
config_file_version = 2
services = nss, pam, ssh, sudo
debug_level=10
[domain/test.com]
ad_domain = test.com
ad_server = test.com
krb5_realm = TEST.COM
realmd_tags = manages-system joined-with-samba
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = False
fallback_homedir = /home/%u
access_provider = ad
#SSH KEY FETCH
ldap_user_extra_attrs = altSecurityIdentities:altSecurityIdentities
ldap_user_ssh_public_key = altSecurityIdentities
ldap_use_tokengroups = True
[nss]
debug_level=10
我在 sssd_nsss 日志中遇到以下错误
[sssd[nss]] [cache_req_search_send] (0x0400): CR #476: Object found, but needs to be refreshed.
[sssd[nss]] [cache_req_search_dp] (0x0400): CR #476: Looking up [demo_user@test.com] in data provider
[sssd[nss]] [sss_dp_issue_request] (0x0400): Issuing request for [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [sss_dp_get_account_msg] (0x0400): Creating request for [test.com][0x3][BE_REQ_INITGROUPS][name=demo_user@test.com:-]
[sssd[nss]] [sbus_add_timeout] (0x2000): 0x55bf80d3c120
[sssd[nss]] [sss_dp_internal_get_send] (0x0400): Entering request [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [sbus_remove_timeout] (0x2000): 0x55bf80d3c120
[sssd[nss]] [sbus_dispatch] (0x4000): dbus conn: 0x55bf80d27fe0
[sssd[nss]] [sbus_dispatch] (0x4000): Dispatching.
[sssd[nss]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[nss]] [cache_req_common_dp_recv] (0x0040): CR #476: Data Provider Error: 3, 5, Failed to get reply from Data Provider
[sssd[nss]] [cache_req_common_dp_recv] (0x0400): CR #476: Due to an error we will return cached data
[sssd[nss]] [cache_req_search_cache] (0x0400): CR #476: Looking up [demo_user@test.com] in cache
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d3bc90
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d2bb90
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d2bb90 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d3bc90
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d2bb90
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d2bb90 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d43d00
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d41100
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d43d00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d46b00
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d46bd0
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d41100 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d43d00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d46b00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d46bd0 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d46b00 "ldb_kv_callback"
[sssd[nss]] [cache_req_search_ncache_filter] (0x0400): CR #476: This request type does not support filtering result by negative cache
[sssd[nss]] [cache_req_search_done] (0x0400): CR #476: Returning updated object [demo_user@test.com]
[sssd[nss]] [cache_req_create_and_add_result] (0x0400): CR #476: Found 2 entries in domain test.com
[sssd[nss]] [sss_dp_req_destructor] (0x0400): Deleting request: [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [cache_req_done] (0x0400): CR #476: Finished: Success
[sssd[nss]] [nss_protocol_done] (0x4000): Sending reply: success
SSSD_SSH 日志在下面
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
当我尝试使用以下命令使用 ssh 登录时
ssh demo_user@test.com@<IP>
我收到以下错误
demo_user@test.com@<IP>: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
我试过下面的东西
挖
id demo_user@test.com
uid=1277801117(demo_user) gid=1277800513(域用户) groups=1277800513(域用户)
我已经尝试重新启动 SSSD Demon，但它并没有像一些论坛中建议的那样起作用
有什么方法可以让这个工作成功
[sssd[nss]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[nss]] [cache_req_common_dp_recv] (0x0040): CR #476: Data Provider Error: 3, 5, Failed to get reply from Data Provider
[sssd[nss]] [cache_req_common_dp_recv] (0x0400): CR #476: Due to an error we will return cached data
这告诉您数据提供者处于离线状态，您使用 id 命令看到的输出来自缓存。请检查 SSSD 域日志 (sssd_*.test.com.log) 为什么客户端无法与后端通信。
修复此问题后，请验证您的 ssh_config 是否已正确设置以从 AD 获取 public 密钥。此文件中需要包含以下选项：
AuthorizedKeysCommand /usr/bin/sss_ssh_authorizedkeys
AuthorizedKeysCommandUser root
您可以通过运行工具手动验证 ssh 密钥代理是否按预期工作：
# sss_ssh_authorizedkeys demo_user
但同样，在 SSSD 数据提供程序可以成功与 AD 后端对话之前，这将不起作用。
我已经在使用 Realm 连接到 Microsoft AD Forest 的 linux 机器上配置了 SSSD。
我的最终目标是使用存储在 Microsoft AD 中的 SSH 密钥登录 CentOS 机器
以下是设置详细信息：
- EC2 Windows 适用于 Microsoft AD
- 配置了 SSSD 的 EC2 Amazon Linux
我可以使用 AD 用户名和密码登录 linux 机器。
我现在已经将 SSH Public 密钥存储在 Microsoft AD altSecurityIdentities 用户属性以及 sshPublicKeys属性。
下面是 SSSD 的配置文件
[sssd]
domains = test.com
config_file_version = 2
services = nss, pam, ssh, sudo
debug_level=10
[domain/test.com]
ad_domain = test.com
ad_server = test.com
krb5_realm = TEST.COM
realmd_tags = manages-system joined-with-samba
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = False
fallback_homedir = /home/%u
access_provider = ad
#SSH KEY FETCH
ldap_user_extra_attrs = altSecurityIdentities:altSecurityIdentities
ldap_user_ssh_public_key = altSecurityIdentities
ldap_use_tokengroups = True
[nss]
debug_level=10
我在 sssd_nsss 日志中遇到以下错误
[sssd[nss]] [cache_req_search_send] (0x0400): CR #476: Object found, but needs to be refreshed.
[sssd[nss]] [cache_req_search_dp] (0x0400): CR #476: Looking up [demo_user@test.com] in data provider
[sssd[nss]] [sss_dp_issue_request] (0x0400): Issuing request for [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [sss_dp_get_account_msg] (0x0400): Creating request for [test.com][0x3][BE_REQ_INITGROUPS][name=demo_user@test.com:-]
[sssd[nss]] [sbus_add_timeout] (0x2000): 0x55bf80d3c120
[sssd[nss]] [sss_dp_internal_get_send] (0x0400): Entering request [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [sbus_remove_timeout] (0x2000): 0x55bf80d3c120
[sssd[nss]] [sbus_dispatch] (0x4000): dbus conn: 0x55bf80d27fe0
[sssd[nss]] [sbus_dispatch] (0x4000): Dispatching.
[sssd[nss]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[nss]] [cache_req_common_dp_recv] (0x0040): CR #476: Data Provider Error: 3, 5, Failed to get reply from Data Provider
[sssd[nss]] [cache_req_common_dp_recv] (0x0400): CR #476: Due to an error we will return cached data
[sssd[nss]] [cache_req_search_cache] (0x0400): CR #476: Looking up [demo_user@test.com] in cache
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d3bc90
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d2bb90
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d2bb90 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d3bc90
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d2bb90
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d2bb90 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d3bc90 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d43d00
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d41100
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d43d00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_callback": 0x55bf80d46b00
[sssd[nss]] [ldb] (0x4000): Added timed event "ldb_kv_timeout": 0x55bf80d46bd0
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d41100 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d43d00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Running timer event 0x55bf80d46b00 "ldb_kv_callback"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d46bd0 "ldb_kv_timeout"
[sssd[nss]] [ldb] (0x4000): Destroying timer event 0x55bf80d46b00 "ldb_kv_callback"
[sssd[nss]] [cache_req_search_ncache_filter] (0x0400): CR #476: This request type does not support filtering result by negative cache
[sssd[nss]] [cache_req_search_done] (0x0400): CR #476: Returning updated object [demo_user@test.com]
[sssd[nss]] [cache_req_create_and_add_result] (0x0400): CR #476: Found 2 entries in domain test.com
[sssd[nss]] [sss_dp_req_destructor] (0x0400): Deleting request: [0x55bf7f9683e0:3:demo_user@test.com@test.com]
[sssd[nss]] [cache_req_done] (0x0400): CR #476: Finished: Success
[sssd[nss]] [nss_protocol_done] (0x4000): Sending reply: success
SSSD_SSH 日志在下面
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[ssh]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
当我尝试使用以下命令使用 ssh 登录时
ssh demo_user@test.com@<IP>
我收到以下错误
demo_user@test.com@<IP>: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
我试过下面的东西
挖
id demo_user@test.com
uid=1277801117(demo_user) gid=1277800513(域用户) groups=1277800513(域用户)
我已经尝试重新启动 SSSD Demon，但它并没有像一些论坛中建议的那样起作用
有什么方法可以让这个工作成功
[sssd[nss]] [sss_dp_get_reply] (0x0010): The Data Provider returned an error [org.freedesktop.sssd.Error.DataProvider.Offline]
[sssd[nss]] [cache_req_common_dp_recv] (0x0040): CR #476: Data Provider Error: 3, 5, Failed to get reply from Data Provider
[sssd[nss]] [cache_req_common_dp_recv] (0x0400): CR #476: Due to an error we will return cached data
这告诉您数据提供者处于离线状态，您使用 id 命令看到的输出来自缓存。请检查 SSSD 域日志 (sssd_*.test.com.log) 为什么客户端无法与后端通信。
修复此问题后，请验证您的 ssh_config 是否已正确设置以从 AD 获取 public 密钥。此文件中需要包含以下选项：
AuthorizedKeysCommand /usr/bin/sss_ssh_authorizedkeys
AuthorizedKeysCommandUser root
您可以通过运行工具手动验证 ssh 密钥代理是否按预期工作：
# sss_ssh_authorizedkeys demo_user
但同样，在 SSSD 数据提供程序可以成功与 AD 后端对话之前，这将不起作用。