調試samba
我們工作中經常的會使用samba。
但是出現一個棘手的問題我們應該怎麼辦呢？網上查資料查解決方案？
還是自己下一套samba的源碼分析一番呢？
本文介紹了工作中遇到的一個問題。
然後通過查看源碼來分析爲什麼會出這個錯誤。
以及最後應該怎麼解決這個錯誤。
參考https://wiki.ubuntu.com/DebuggingSamba這個。
我們先看看這個wiki上介紹的怎麼調試samba的吧
Introduction（介紹）
Samba is a complex package, because it covers a wide range of use cases and provides lots of different binary packages.
Bugs relating to the samba source package typically fall into one of the following categories:（一般分爲下面幾種場景）
1.User cannot connect to (or properly access files on) a remote share from his Ubuntu system. This falls under the category of samba as a client.
2.Other systems cannot connect to (or properly access files on) an Ubuntu system providing samba shares. This may be an issue with samba as a server.
3.Install/upgrade failures of the samba packages.
4.libpam-smbpass specific issues. Sharing a folder from the GUI installs libpam-smbpass, which stacks a PAM module that maintains sync between system and samba passwords. Failure in libpam-smbpass may result in inability to login on the system.
5.winbind specific issues. Winbind allows to get user/group info from a Windows DC. It is sometimes installed by unsuspecting users as a recommended package from Wine.
Also, it is a very good idea to have a look at the official Samba HOWTO. You will find there not only a how-to, but also common errors.
How to file（如何定位哪個）
First figure out if the bug falls under one of the generic categories:
1.samba as a client
2.samba as a server
3.install/upgrade failure
4.libpam-smbpass related
5.winbind related
Samba as a client（samba作爲客戶端來使用）
IS IT A REGRESSION ?
Did this use to work properly with a previous release ?
WHAT VERSION OF SAMBA PACKAGES ARE USED ?
Please give the output of:
dpkg-query -W -f='${Package} ${Version} ${Source} ${Status}\n' | grep samba
HOW IS THE REMOTE SHARE ACCESSED FROM THE UBUNTU SYSTEM?
nautilus (or other GUI client)
smbclient (from the command line)
cifs filesystem mount (from /etc/fstab or a mount command)
IF NAUTILUS (OR ANOTHER GUI CLIENT) IS USED TO ACCESS THE REMOTE SHARE, CAN THE SHARE BE ACCESSED WITH THE SMBCLIENT COMMAND LINE UTILITY ?
To test:
install the samba-client package
try to connect to the remote system from the command line:
smbclient //remote_system/share_name
If the share requires a specific username/password, try using the "-U" parameter (for example, use "-U ntdomain\\user").
IF A CIFS MOUNT IS USED
In that case please also provide:
the content of the file /etc/fstab, or the command line used to mount the remote share if the share is manually mounted.
the content of the file /proc/fs/cifs/DebugData
WHAT IS THE REMOTE SERVER ?
In all cases, please include the output of the following smbclient command:
smbclient -L //remote_system
This should give us the remote server version. Also include on what kind of machine the share is located (Windows 2003 Server, Ubuntu 8.04, NAS box model...)
Samba as a server（samba作爲服務端來使用）
IS IT A REGRESSION ?
Did this use to work properly with a previous release ?
WHAT VERSION OF SAMBA PACKAGES ARE USED ?
Please give the output of:
dpkg-query -W -f='${Package} ${Version} ${Source} ${Status}\n' | grep samba
WHICH CLIENTS ARE FAILING TO CONNECT?
Include the operating system (Windows, Ubuntu) and version (XP, Vista, 8.04) of the client systems failing to connect to the share.
WHAT IS THE ERROR MESSAGE PRODUCED ON THE CLIENT?
OTHER INFORMATION TO INCLUDE
the content of the /etc/samba/smb.conf file
log files found in /var/log/samba/
the output of the smbclient -L //server/
the output of testparm -s
Install/upgrade failure（安裝、升級時候報錯）
STATUS OF SAMBA PACKAGES ON THE SYSTEM
Please give the output of:
dpkg-query -W -f='${Package} ${Version} ${Source} ${Status}\n' | grep samba
OTHER INFORMATION TO INCLUDE
apt and dpkg log files: /var/log/dpkg.log and /var/log/apt/term.log.
/etc/samba/smb.conf (or absence thereof)
In the case of an upgrade was there a prompt for a modified configuration file? If so what steps were taken.
How to Triage（如何鑑別分類）
Identify if the bug falls in one of the generic categories above. If so make sure that the relevant information is available. If not ask for it using one of the stock replies.
Samba as a client
If nautilus fails to connect but smbclient can successfully connect, the bug is related to nautilus. Mark the samba task Invalid and open a new task for nautilus.
If both nautilus and smbclient can not connect, the bug is related to samba.
If cifs cannot connect the bug might be related to CIFS kernelspace (package linux) or userspace (package samba). In doubt, leave it in samba.
Stock Reply（回覆）
SAMBA AS A CLIENT
Use this reply if an Ubuntu system cannot access a remote samba/windows share.
Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it without more information.
Please include the information requested at https://wiki.ubuntu.com/DebuggingSamba#samba-client.
SAMBA AS A SERVER
Use this reply if remote clients cannot access a share provided by an Ubuntu system.
Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it without more information.
Please include the information requested at https://wiki.ubuntu.com/DebuggingSamba#samba-server.
INSTALL/UPGRADE FAILURE
Use this reply if there is a package installation/upgrade failure on the Ubuntu system.
Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it without more information.
Please include the information requested at https://wiki.ubuntu.com/DebuggingSamba#samba-pkg-fail.
Non-bugs（沒有bug？）
Install/upgrade failure due to missing /etc/samba/smb.conf file
HOW TO RECOGNIZE IT
This is a case of install/upgrade failure that results in the following error message (potentially translated):
package samba-common <version> failed to install/upgrade: subprocess post-installation script returned error exit status 1
The DpkgTerminalLog.gz (or /var/log/apt/term.log) contains the following message:
Not replacing deleted config file /etc/samba/smb.conf
chmod: cannot access `/etc/samba/smb.conf': No such file or directory
The user should not be able to provide any /etc/samba/smb.conf file, since it is missing.
STOCK ANSWER
Thank you for taking the time to report this bug and helping to make Ubuntu better.
It looks like you manually removed /etc/samba/smb.conf before reinstalling/upgrading samba packages. Configuration files are special files that should be purged by running "apt-get purge", not manually removed.
You can recover from this situation by restoring /etc/samba/smb.conf and restart pending package configuration:
$ sudo cp /usr/share/samba/smb.conf /etc/samba/smb.conf
$ sudo dpkg --configure -a
Alternatively, you can purge samba-common completely and attempt the install/upgrade again:
$ sudo apt-get purge samba-common
This bug will be marked as Invalid: please reopen it if the above steps do not resolve the situation for you. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!
Close the bug report as Invalid.
報錯日誌
log.commu-pc:[2020/03/04 15:14:02.169275, 0] ../source3/auth/auth_domain.c:226(domain_client_validate)
log.commu-pc: domain_client_validate: unable to validate password for user xxx in domain xxx to Domain controller AD-03.XXXX.COM. Error was NT_STATUS_ACCESS_DENIED.
log.commu-pc:[2020/03/04 15:14:09.504618, 0] ../source3/auth/auth_domain.c:226(domain_client_validate)
log.commu-pc: domain_client_validate: unable to validate password for user xxx in domain xxx to Domain controller AD-03.XXXX.COM. Error was NT_STATUS_ACCESS_DENIED.
log.commu-pc:[2020/03/04 15:14:10.669048, 0] ../source3/auth/auth_domain.c:226(domain_client_validate)
log.commu-pc: domain_client_validate: unable to validate password for user xxx in domain xxx to Domain controller AD-03.XXXX.COM. Error was NT_STATUS_ACCESS_DENIED.
通過日誌分析發現 都是 說 某個 user 在 domain controller ad-03 裏面 驗證密碼時候出錯。報這個錯誤的時候也就是不能方法共享目錄的時候。
不過這個錯誤 有時候出現，有時候就能訪問共享。
確定samba的版本
samba -V
Version 4.7.6-Ubuntu
取得samba的源碼的版本號
buildfarm@fs-release:/var/log/samba$ dpkg-query -W -f='${Package} ${Version} ${Source} ${Status}\n' | grep samba
libsmbclient 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
libwbclient0 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
python-samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 install ok installed
samba-common 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
samba-common-bin 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
samba-dsdb-modules 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
samba-libs 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
samba-vfs-modules 2:4.7.6+dfsg~ubuntu-0ubuntu2.11 samba install ok installed
下載源代碼
克隆ubuntu上面的samba軟件源代碼。
$ git clone https://git.launchpad.net/ubuntu/+source/samba (fetch)
檢出對應的tag的代碼。這個tag就是通過上面的dpkg-query命令查出來的。
$ git for-each-ref |grep '4.7.6.*2.11'
5b83ed324fba2d49685a5527838ff1bfc8c387bd tag refs/tags/import/2%4.7.6+dfsg_ubuntu-0ubuntu2.11
找到對應的報錯日誌行的代碼 source3/auth/auth_domain.c
錯誤定位到domain_client_validate 這個方法裏面
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("domain_client_validate: unable to validate password "
"for user %s in domain %s to Domain controller %s. "
"Error was %s.\n", user_info->client.account_name,
user_info->client.domain_name, dc_name,
nt_errstr(nt_status)));
我們返現 ad-03 是 來自 dc_name 這個變量，下面我們分析這個dc_name 是怎麼來的，dc 估計就是 domain controller的縮寫吧。
domain_client_validate 方法是在 check_trustdomain_security 中被調用了。
fstring dc_name;
nt_status = domain_client_validate(mem_ctx,
user_info,
user_info->mapped.domain_name,
(uchar *)auth_context->challenge.data,
server_info,
dc_name,
&dc_ss);
其中的 dc_name 就是由 get_dc_name 方法獲得。dc_name 變量在方法開始 定義的。
if ( !get_dc_name(user_info->mapped.domain_name, NULL, dc_name, &dc_ss) ) {
DEBUG(5,("check_trustdomain_security: unable to locate a DC for domain %s\n",
user_info->mapped.domain_name));
return NT_STATUS_NO_LOGON_SERVERS;
}
分析 get_dc_name 方法 source3/libsmb/namequery_dc.c
bool get_dc_name(const char *domain, const char *realm, fstring srv_name, struct sockaddr_storage *ss_out)
{
struct sockaddr_storage dc_ss;
bool ret;
bool our_domain = False;
zero_sockaddr(&dc_ss);
ret = False;
if ( strequal(lp_workgroup(), domain) || strequal(lp_realm(), realm) )
our_domain = True;
/* always try to obey what the admin specified in smb.conf
(for the local domain) */
if ( (our_domain && lp_security()==SEC_ADS) || realm ) {
ret = ads_dc_name(domain, realm, &dc_ss, srv_name); // 走到這裏調用了
}
if (!domain) {
/* if we have only the realm we can't do anything else */
return False;
}
if (!ret) {
/* fall back on rpc methods if the ADS methods fail */
ret = rpc_dc_name(domain, srv_name, &dc_ss);
}
*ss_out = dc_ss;
return ret;
}
其中該方法的第1個參數 domain=xxxxx 。是通過下面的 log 打印推測出來的。
再附加一段搜 dc-name的日誌。
./log.old:8332:[2020/03/09 14:49:11.416584, 4] ../source3/libsmb/namequery_dc.c:77(ads_dc_name)
./log.old:8333: ads_dc_name: domain=xxxxx
./log.old:8422:[2020/03/09 14:49:11.477957, 4] ../source3/libsmb/namequery_dc.c:151(ads_dc_name)
./log.old:8423: ads_dc_name: using server='DC01.xxxxx.COM' IP=192.168.151
grep: ./cores: Permission denied
./log:6136:[2020/03/09 15:26:59.059731, 4] ../source3/libsmb/namequery_dc.c:77(ads_dc_name)
./log:6137: ads_dc_name: domain=xxxxx
./log:6234:[2020/03/09 15:26:59.226280, 4] ../source3/libsmb/namequery_dc.c:151(ads_dc_name)
./log:6235: ads_dc_name: using server='NJDC.xxxxx.COM' IP=192.168.152
buildfarm@fs-release:/var/log/samba$ grep dc_name -rni .
./log.old:8332:[2020/03/09 14:49:11.416584, 4] ../source3/libsmb/namequery_dc.c:77(ads_dc_name)
./log.old:8333: ads_dc_name: domain=xxxxx
./log.old:8422:[2020/03/09 14:49:11.477957, 4] ../source3/libsmb/namequery_dc.c:151(ads_dc_name)
./log.old:8423: ads_dc_name: using server='DC01.xxxxx.COM' IP=192.168.151
grep: ./cores: Permission denied
./log:6136:[2020/03/09 15:26:59.059731, 4] ../source3/libsmb/namequery_dc.c:77(ads_dc_name)
./log:6137: ads_dc_name: domain=xxxxx
./log:6234:[2020/03/09 15:26:59.226280, 4] ../source3/libsmb/namequery_dc.c:151(ads_dc_name)
./log:6235: ads_dc_name: using server='NJDC.xxxxx.COM' IP=192.168.152
通過上面新增的日誌我們看ads_dc_name方法。source3/libsmb/namequery_dc.c
/**********************************************************************
Is this our primary domain ?
**********************************************************************/
#ifdef HAVE_KRB5
static bool is_our_primary_domain(const char *domain)
{
int role = lp_server_role();
if ((role == ROLE_DOMAIN_MEMBER) && strequal(lp_workgroup(), domain)) {
return True;
} else if (strequal(get_global_sam_name(), domain)) {
return True;
}
return False;
}
#endif
通過上面新增的日誌我們看ads_dc_name方法。source3/libsmb/namequery_dc.c
/**************************************************************************
Find the name and IP address for a server in the realm/domain
*************************************************************************/
其中該方法的第1個參數 domain=xxxxx 。是通過上面的 log 打印推測出來的。
static bool ads_dc_name(const char *domain, const char *realm, struct sockaddr_storage *dc_ss, fstring srv_name)
{
ADS_STRUCT *ads;
char *sitename;
int i;
char addr[INET6_ADDRSTRLEN];
if (!realm && strequal(domain, lp_workgroup())) {
realm = lp_realm();
}
sitename = sitename_fetch(talloc_tos(), realm);
/* Try this 3 times then give up. */
for( i =0 ; i < 3; i++) {
ads = ads_init(realm, domain, NULL);
if (!ads) {
TALLOC_FREE(sitename);
return False;
}
DEBUG(4,("ads_dc_name: domain=%s\n", domain));
#ifdef HAVE_ADS
/* we don't need to bind, just connect */
ads->auth.flags |= ADS_AUTH_NO_BIND;
ads_connect(ads);
#endif
if (!ads->config.realm) {
TALLOC_FREE(sitename);
ads_destroy(&ads);
return False;
}
/* Now we've found a server, see if our sitename
has changed. If so, we need to re-do the DNS query
to ensure we only find servers in our site. */
if (stored_sitename_changed(realm, sitename)) {
TALLOC_FREE(sitename);
sitename = sitename_fetch(talloc_tos(), realm);
ads_destroy(&ads);
/* Ensure we don't cache the DC we just connected to. */
namecache_delete(realm, 0x1C);
namecache_delete(domain, 0x1C);
continue;
}
#ifdef HAVE_ADS
if (is_our_primary_domain(domain) && (ads->config.flags & NBT_SERVER_KDC)) {
if (ads_closest_dc(ads)) {
/* We're going to use this KDC for this realm/domain.
If we are using sites, then force the krb5 libs
to use this KDC. */
create_local_private_krb5_conf_for_domain(realm,
domain,
sitename,
&ads->ldap.ss);
} else {
create_local_private_krb5_conf_for_domain(realm,
domain,
NULL,
&ads->ldap.ss);
}
}
#endif
break;
}
if (i == 3) {
DEBUG(1,("ads_dc_name: sitename (now \"%s\") keeps changing ???\n",
sitename ? sitename : ""));
TALLOC_FREE(sitename);
ads_destroy(&ads);
return False;
}
TALLOC_FREE(sitename);
fstrcpy(srv_name, ads->config.ldap_server_name); // srv_name 這裏從 ads->config.ldap_server_name 複製過去的一個字符串。
if (!strupper_m(srv_name)) {
ads_destroy(&ads);
return false;
}
#ifdef HAVE_ADS
*dc_ss = ads->ldap.ss;
#else
zero_sockaddr(dc_ss);
#endif
ads_destroy(&ads);
print_sockaddr(addr, sizeof(addr), dc_ss);
DEBUG(4,("ads_dc_name: using server='%s' IP=%s\n",
srv_name, addr));
return True;
}
/****************************************************************************
Utility function to return the name of a DC. The name is guaranteed to be
valid since we have already done a name_status_find on it
***************************************************************************/
static bool rpc_dc_name(const char *domain,
fstring srv_name,
struct sockaddr_storage *ss_out)
{
struct ip_service *ip_list = NULL;
struct sockaddr_storage dc_ss;
int count, i;
NTSTATUS result;
char addr[INET6_ADDRSTRLEN];
/* get a list of all domain controllers */
if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, NULL, &ip_list, &count,
False))) {
DEBUG(3, ("Could not look up dc's for domain %s\n", domain));
return False;
}
/* Remove the entry we've already failed with (should be the PDC). */
for (i = 0; i < count; i++) {
if (is_zero_addr(&ip_list[i].ss))
continue;
if (name_status_find(domain, 0x1c, 0x20, &ip_list[i].ss, srv_name)) {
result = check_negative_conn_cache( domain, srv_name );
if ( NT_STATUS_IS_OK(result) ) {
dc_ss = ip_list[i].ss;
goto done;
}
}
}
SAFE_FREE(ip_list);
/* No-one to talk to )-: */
return False; /* Boo-hoo */
done:
/* We have the netbios name and IP address of a domain controller.
Ideally we should sent a SAMLOGON request to determine whether
the DC is alive and kicking. If we can catch a dead DC before
performing a cli_connect() we can avoid a 30-second timeout. */
print_sockaddr(addr, sizeof(addr), &dc_ss);
DEBUG(3, ("rpc_dc_name: Returning DC %s (%s) for domain %s\n", srv_name,
addr, domain));
*ss_out = dc_ss;
SAFE_FREE(ip_list);
return True;
}
發現debug level 還可以大於11呢。於是直接調到了20.輸出如下日誌。ADS_STATUS ads_connect(ADS_STRUCT *ads) 方法中的一個調試輸出。
if (DEBUGLEVEL >= 11) {
char *s = NDR_PRINT_STRUCT_STRING(talloc_tos(), ads_struct, ads);
DEBUG(11,("ads_connect: entering\n"));
DEBUGADD(11,("%s\n", s));
TALLOC_FREE(s);
}
通過代碼發現 是 直接 dump出來了整個 ads_struct 結構體。
log.old: ads_connect: entering
log.old- ads: struct ads_struct
log.old- is_mine : true
log.old- ads: struct server
log.old- realm : 'xxxx.COM'
log.old- workgroup : 'xxxxxx'
log.old- ldap_server : NULL
log.old- ads: struct auth
log.old- realm : NULL
log.old- password : '(PASSWORD omitted)'
log.old- user_name : NULL
log.old- kdc_server : NULL
log.old- flags : 0x00000022 (34)
log.old- 0: ADS_AUTH_DISABLE_KERBEROS
log.old- 1: ADS_AUTH_NO_BIND
log.old- 0: ADS_AUTH_ANON_BIND
log.old- 0: ADS_AUTH_SIMPLE_BIND
log.old- 0: ADS_AUTH_ALLOW_NTLMSSP
log.old- 1: ADS_AUTH_SASL_SIGN
log.old- 0: ADS_AUTH_SASL_SEAL
log.old- 0: ADS_AUTH_SASL_FORCE
log.old- 0: ADS_AUTH_USER_CREDS
log.old- time_offset : 0x00000000 (0)
log.old- tgt_expire : (time_t)0
log.old- tgs_expire : (time_t)0
log.old- renewable : (time_t)0
log.old- ads: struct config
log.old- flags : 0x00000000 (0)
log.old- 0: DS_SERVER_PDC
log.old- 0: DS_SERVER_GC
log.old- 0: DS_SERVER_LDAP
log.old- 0: DS_SERVER_DS
log.old- 0: DS_SERVER_KDC
log.old- 0: DS_SERVER_TIMESERV
log.old- 0: DS_SERVER_CLOSEST
log.old- 0: DS_SERVER_WRITABLE
log.old- 0: DS_SERVER_GOOD_TIMESERV
log.old- 0: DS_SERVER_NDNC
log.old- 0: DS_SERVER_SELECT_SECRET_DOMAIN_6
log.old- 0: DS_SERVER_FULL_SECRET_DOMAIN_6
log.old- 0: DS_SERVER_WEBSERV
log.old- 0: DS_SERVER_DS_8
log.old- 0: DS_DNS_CONTROLLER
log.old- 0: DS_DNS_DOMAIN
log.old- 0: DS_DNS_FOREST_ROOT
log.old- realm : NULL
log.old- bind_path : NULL
log.old- ldap_server_name : NULL
log.old- server_site_name : NULL
log.old- client_site_name : NULL
log.old- current_time : (time_t)0
log.old- schema_path : NULL
log.old- config_path : NULL
log.old- ads: struct ldap
log.old- ld : NULL
log.old- ss :
log.old- last_attempt : Tue Jan 6 07:57:53 AM 1970 CST
log.old- port : 0x00000000 (0)
log.old- saslwrap: struct saslwrap
log.old- wrap_type : 0x0001 (1)
log.old- sbiod : NULL
log.old- mem_ctx : NULL
log.old- wrap_ops : NULL
log.old- wrap_private_data : NULL
log.old- saslwrap: struct in
log.old- ofs : 0x00000000 (0)
log.old- needed : 0x00000000 (0)
log.old- left : 0x00000000 (0)
log.old- max_wrapped : 0x00000000 (0)
log.old- min_wrapped : 0x00000000 (0)
log.old- size : 0x00000000 (0)
log.old- buf: ARRAY(0) : NULL
log.old- saslwrap: struct out
log.old- ofs : 0x00000000 (0)
log.old- left : 0x00000000 (0)
log.old- max_unwrapped : 0x00000000 (0)
log.old- sig_size : 0x00000000 (0)
log.old- size : 0x00000000 (0)
log.old- buf: ARRAY(0) : NULL
log.old-
再次分析到 resolve_and_ping_dns方法中
static NTSTATUS resolve_and_ping_dns(ADS_STRUCT *ads, const char *sitename, const char *realm)
buildfarm@fs-release:/var/log/samba$ grep resolve_and_ping_dns log*
log.old:[2020/03/09 17:33:45.894215, 6, pid=8229, effective(0, 0), real(0, 0)] ../source3/libads/ldap.c:419(resolve_and_ping_dns)
log.old: resolve_and_ping_dns: (cldap) looking for realm 'xxx.COM'
log.old:[2020/03/09 17:33:46.611538, 6, pid=8230, effective(0, 0), real(0, 0)] ../source3/libads/ldap.c:419(resolve_and_ping_dns)
log.old: resolve_and_ping_dns: (cldap) looking for realm 'xxxx.COM'
log.old:[2020/03/09 17:33:47.319183, 6, pid=8231, effective(0, 0), real(0, 0)] ../source3/libads/ldap.c:419(resolve_and_ping_dns)
log.old: resolve_and_ping_dns: (cldap) looking for realm 'xxxxxxxx.COM'
log.old:[2020/03/09 17:33:48.092824, 6, pid=8233, effective(0, 0), real(0, 0)] ../source3/libads/ldap.c:419(resolve_and_ping_dns)
log.old: resolve_and_ping_dns: (cldap) looking for realm 'xxxx.COM'
log.old:[2020/03/09 17:33:48.814634, 6, pid=8235, effective(0, 0), real(0, 0)] ../source3/libads/ldap.c:419(resolve_and_ping_dns)
log.old: resolve_and_ping_dns: (cldap) looking for realm 'xxx.COM'
再次分析，得到 get_sorted_dc_list 方法
/*********************************************************************
Small wrapper function to get the DC list and sort it if neccessary.
*********************************************************************/
NTSTATUS get_sorted_dc_list( const char *domain,
const char *sitename,
struct ip_service **ip_list,
int *count,
bool ads_only )
buildfarm@fs-release:/var/log/samba$ grep get_sorted_dc_list log*
log:[2020/03/09 17:41:53.921164, 8, pid=8313, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
log.old:[2020/03/09 17:41:49.792818, 8, pid=8308, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log.old: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
log.old:[2020/03/09 17:41:50.510170, 8, pid=8309, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log.old: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
log.old:[2020/03/09 17:41:51.499312, 8, pid=8310, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log.old: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
log.old:[2020/03/09 17:41:52.207439, 8, pid=8311, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log.old: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
log.old:[2020/03/09 17:41:52.914030, 8, pid=8312, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3355(get_sorted_dc_list)
log.old: get_sorted_dc_list: attempting lookup for name xxx.COM (sitename Default-First-Site-Name)
下面走到get_dc_list 方法。
/********************************************************
Get the IP address list of the domain controllers for
a domain.
*********************************************************/
static NTSTATUS get_dc_list(const char *domain,
const char *sitename,
struct ip_service **ip_list,
int *count,
enum dc_lookup_type lookup_type,
bool *ordered)
buildfarm@fs-release:/var/log/samba$ grep get_dc_list log*
log:[2020/03/09 17:43:16.029160, 3, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.029280, 8, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.030213, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.030235, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log:[2020/03/09 17:43:16.063366, 3, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.065864, 8, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.066247, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.066276, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.31.251:88 192.168.13.251:88
log:[2020/03/09 17:43:16.066381, 3, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.068330, 8, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.068704, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.068732, 4, pid=8328, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.13.251:88 192.168.31.251:88
log:[2020/03/09 17:43:16.700775, 3, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.700859, 8, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.701415, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.701430, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log:[2020/03/09 17:43:16.733917, 3, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.736368, 8, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.736750, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.736779, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.31.251:88 192.168.13.251:88
log:[2020/03/09 17:43:16.736901, 3, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:16.739348, 8, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:16.739741, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:16.739770, 4, pid=8329, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.13.251:88 192.168.31.251:88 192.168.13.252:88
log:[2020/03/09 17:43:17.368729, 3, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:17.368867, 8, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:17.369858, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:17.369881, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log:[2020/03/09 17:43:17.402505, 3, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:17.406303, 8, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:17.406739, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:17.406769, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.31.251:88 192.168.13.251:88
log:[2020/03/09 17:43:17.406876, 3, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:17.410338, 8, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:17.410751, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:17.410780, 4, pid=8330, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.252:88 192.168.13.251:88
log:[2020/03/09 17:43:37.768653, 3, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:37.768814, 8, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:37.769616, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:37.769634, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log:[2020/03/09 17:43:37.802598, 3, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:37.804922, 8, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:37.805329, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:37.805358, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.251:88 192.168.13.252:88
log:[2020/03/09 17:43:37.805464, 3, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log:[2020/03/09 17:43:37.807314, 8, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log:[2020/03/09 17:43:37.807684, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log: get_dc_list: returning 4 ip addresses in an ordered list
log:[2020/03/09 17:43:37.807712, 4, pid=8334, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.252:88 192.168.13.251:88
log.old:[2020/03/09 17:43:05.751178, 3, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:05.751318, 8, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:05.752314, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:05.752332, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log.old:[2020/03/09 17:43:05.786412, 3, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:05.791044, 8, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:05.791442, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:05.791471, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.31.251:88 192.168.13.251:88
log.old:[2020/03/09 17:43:05.791576, 3, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:05.794197, 8, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:05.794579, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:05.794608, 4, pid=8324, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.13.251:88 192.168.31.251:88 192.168.13.252:88
log.old:[2020/03/09 17:43:13.692054, 3, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:13.692174, 8, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:13.693051, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:13.693073, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log.old:[2020/03/09 17:43:13.725263, 3, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:13.727528, 8, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:13.727913, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:13.727942, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.31.251:88 192.168.13.251:88
log.old:[2020/03/09 17:43:13.728049, 3, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:13.729936, 8, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:13.730305, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:13.730334, 4, pid=8325, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.252:88 192.168.13.251:88
log.old:[2020/03/09 17:43:14.659077, 3, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:14.659178, 8, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:14.660000, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:14.660018, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log.old:[2020/03/09 17:43:14.692762, 3, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:14.695040, 8, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:14.695438, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:14.695467, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.251:88 192.168.13.252:88
log.old:[2020/03/09 17:43:14.695573, 3, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:14.703135, 8, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:14.703515, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:14.703544, 4, pid=8326, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.31.251:88 192.168.13.252:88 192.168.13.251:88
log.old:[2020/03/09 17:43:15.350163, 3, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:15.350251, 8, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:15.350999, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:15.351014, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:389 192.168.13.251:389 192.168.31.251:389 192.168.13.252:389
log.old:[2020/03/09 17:43:15.383322, 3, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:15.385822, 8, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:15.386205, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:15.386234, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.13.251:88 192.168.13.252:88 192.168.31.251:88
log.old:[2020/03/09 17:43:15.386341, 3, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3160(get_dc_list)
log.old: get_dc_list: preferred server list: "AD-SZ.example.com, *"
log.old:[2020/03/09 17:43:15.391064, 8, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3182(get_dc_list)
log.old:[2020/03/09 17:43:15.391461, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3305(get_dc_list)
log.old: get_dc_list: returning 4 ip addresses in an ordered list
log.old:[2020/03/09 17:43:15.391490, 4, pid=8327, effective(0, 0), real(0, 0)] ../source3/libsmb/namequery.c:3306(get_dc_list)
log.old: get_dc_list: 192.168.17.228:88 192.168.13.252:88 192.168.13.251:88 192.168.31.251:88