记一次samba排错 Failed to start Samba SMB Daemon.

 记录一次服务出错排错的过程，很多新手出了点错不百度直接巴拉巴拉的问，一般老手根据经验可以给出一点建议，但是由于个体环境的差异并不适用，反而埋怨起来。这种真的无F**K可说，所以要培养自己的排错能力是很重要的，这里简单的抛砖引玉的举出个流程出来希望有所帮助。问问题之前善用各大搜索引擎以及博客论坛的搜索功能！

# systemctl status smb.service -l
â— smb.service - Samba SMB Daemon
Loaded: loaded (/usr/lib/systemd/system/smb.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Wed -- :: CST; 1min 8s ago
Process:  ExecStart=/usr/sbin/smbd $SMBDOPTIONS (code=exited, status=)
Main PID:  (code=exited, status=)

May  :: localhost.localdomain systemd[]: Starting Samba SMB Daemon...
May  :: localhost.localdomain smbd[]: /usr/sbin/smbd: relocation error: /lib64/libsamba-credentials.so.: symbol GSS_KRB5_CRED_NO_CI_FLAGS_X, version gssapi_krb5_2_MIT not defined in file libgssapi_krb5.so. with link time reference
May  :: localhost.localdomain systemd[]: smb.service: Main process exited, code=exited, status=/n/a
May 18 16:20:07 localhost.localdomain systemd[1]: Failed to start Samba SMB Daemon.
May 18 16:20:07 localhost.localdomain systemd[1]: smb.service: Unit entered failed state.
May 18 16:20:07 localhost.localdomain systemd[1]: smb.service: Failed with result 'exit-code'.

//从网络上找的类似出错，源错误日志忘记保存

#systemctl start smb 出错

第一步：samba可以用testparm命令来测试smb.conf配置档的合法性

[root@longlong Templates]# testparm
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max () to minimum Windows limit ()
Processing section "[homes]"
Processing section "[printers]"
Processing section "[print$]"
Loaded services file OK.
Server role: ROLE_STANDALONE

Press enter to see a dump of your service definitions

# Global parameters
[global]
    workgroup = SAMBA
    printcap name = cups
    security = USER
    idmap config * : backend = tdb
    cups options = raw

[homes]
    comment = Home Directories
    browseable = No
    inherit acls = Yes
    read only = No
    valid users = %S %D%w%S

[printers]
    comment = All Printers
    path = /var/tmp
    browseable = No
    printable = Yes
    create mask = 

[print$]
    comment = Printer Drivers
    path = /var/lib/samba/drivers
    create mask =
    directory mask =
    write list = root

可以看到配置文件没有错误，排除此错误！～

第二步：使用自带命令 输出samba日志

[root@longlong Templates]# smbd -F -S
smbd: relocation error: /usr/lib64/samba/libgse-samba4.so: symbol krb5_get_init_creds_opt_set_pac_request, version krb5_3_MIT not defined in file libkrb5.so. with link time reference

找出错误原因lib库出错

解决 yum -y install krb5-devel.x86_64 krb5-libs.x86_64

错误原因：进一步分析，查看yum源 发现是公网阿里云源，安装了新版本，系统库文件支持还是老版本所以运行出错

security=share在新版中已经被废弃了 所以最后贴个4以上samba新版本

samba-4.6.2-8.el7.x86_64

建立匿名用户Linux和windows共享目录的配置文件：

[global]
        workgroup = SAMBA
        security = user

passdb backend = tdbsam

printing = cups
        printcap name = cups
        load printers = yes
        cups options = raw
        map to guest = Bad User