使用 Centos 7 并按照以下步骤进行 openldap 服务器配置。我面临这个问题
[root@linux1 ~]# systemctl restart slapd
Job for slapd.service failed because the control process exited with error code. See "systemctl status slapd.service" and "journalctl -xe" for details.
[root@linux1 ~]#
[root@linux1 ~]#
[root@linux1 ~]#
[root@linux1 ~]# systemctl status slapd
● slapd.service - OpenLDAP Server Daemon
Loaded: loaded (/usr/lib/systemd/system/slapd.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sun 2018-05-13 03:21:41 EDT; 7min ago
Docs: man:slapd
man:slapd-config
man:slapd-hdb
man:slapd-mdb
file:///usr/share/doc/openldap-servers/guide.html
Process: 2781 ExecStart=/usr/sbin/slapd -u ldap -h ${SLAPD_URLS} $SLAPD_OPTIONS (code=exited, status=1/FAILURE)
Process: 2767 ExecStartPre=/usr/libexec/openldap/check-config.sh (code=exited, status=0/SUCCESS)
May 13 03:21:40 linux1.learnitguide.net runuser[2770]: pam_unix(runuser:session): session opened for user ldap by (uid=0)
May 13 03:21:40 linux1.learnitguide.net slapd[2781]: @(#) $OpenLDAP: slapd 2.4.44 (Apr 12 2018 19:17:38) $
[email protected]:/builddir/build/BUILD/openldap-2.4.44/openldap-2.4.44/servers/slapd
May 13 03:21:40 linux1.learnitguide.net slapd[2781]: ldif_read_file: checksum error on "/etc/openldap/slapd.d/cn=config/olcDatabase={1}monitor.ldif"
May 13 03:21:40 linux1.learnitguide.net slapd[2781]: ldif_read_file: checksum error on "/etc/openldap/slapd.d/cn=config/olcDatabase={2}hdb.ldif"
May 13 03:21:41 linux1.learnitguide.net slapd[2781]: tlsmc_cert_create_hash_symlink: ERROR: OS error: Permission denied
May 13 03:21:41 linux1.learnitguide.net slapd[2781]: Could not get the realpath: No such file or directory
May 13 03:21:41 linux1.learnitguide.net systemd[1]: slapd.service: control process exited, code=exited status=1
May 13 03:21:41 linux1.learnitguide.net systemd[1]: Failed to start OpenLDAP Server Daemon.
May 13 03:21:41 linux1.learnitguide.net systemd[1]: Unit slapd.service entered failed state.
May 13 03:21:41 linux1.learnitguide.net systemd[1]: slapd.service failed.
[root@linux1 ~]#
答案1
我没有“tlsmc_cert_create_hash_symlink：错误：操作系统错误：权限被拒绝”问题，但有相同的错误消息“无法获取真实路径：没有这样的文件或目录”。
这会影响 Centos7 的最新 Openldap 版本
rpm -qa | grep openldap
openldap-clients-2.4.44-13.el7.x86_64
openldap-servers-2.4.44-13.el7.x86_64
openldap-2.4.44-13.el7.x86_64
ls /var/lib/ldap/
供您参考，此版本的 /var/lib/ldap 中的 DB_CONFIG 似乎是空的。我无法找到原因。创建自己的 DB_CONFIG 并更改 ldap.conf 并没有解决问题。
所以肮脏的解决方案：降级 OpenLdap。
mkdir /tmp/openldap/
cd /tmp/openldap/
wget https://rpmfind.net/linux/centos/7.4.1708/os/x86_64/Packages/openldap-clients-2.4.44-5.el7.x86_64.rpm
wget https://www.rpmfind.net/linux/centos/7.4.1708/os/x86_64/Packages/openldap-2.4.44-5.el7.x86_64.rpm
wget https://rpmfind.net/linux/centos/7.4.1708/os/x86_64/Packages/openldap-servers-2.4.44-5.el7.x86_64.rpm
yum downgrade ./openldap-*
systemctl start slapd.service
抱歉，我没有测试其他版本，来源有问题。但 LDAP 随即启动。
答案2
我们遇到了同样的问题，我们只是 yum -y 升级，之后 ldap 工作正常。
答案3
如果你是 CentOS 7 只需输入这些命令，一切都会好起来的
yum update
cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
chown ldap:ldap /var/lib/ldap/*
答案4
从中获取提示如何指示 yum 安装特定版本我做了以下事情：
yum --showduplicates list openldap-servers
我得到以下信息：
openldap-servers.x86_64 2.4.40-9.el7_2 ol7_latest
openldap-servers.x86_64 2.4.40-13.el7 ol7_latest
openldap-servers.x86_64 2.4.44-5.el7 ol7_latest -> Last run version
openldap-servers.x86_64 2.4.44-13.el7 ol7_latest -> Works
openldap-servers.x86_64 2.4.44-15.el7_5 ol7_latest -> DOES NOT WORK
我使用旧版本的 openldap-servers 使用：
yum install openldap-servers-2.4.44-13.el7
并且能够避免这个问题。