转载自https://www.kutu66.com//hulianwang/article_188064
问题：
我们有2个FreeIPA服务器在网络中运行，今天我们发现：https://support.sectigo.com/articles/Knowledge/Sectigo-AddTrust-External-CA-Root-Expiring-May-30-2020
中间CA已过期，我们无法连接到LDAP。
日志中有以下错误：
ipa: INFO: 401 Unauthorized: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:618)
[:error] [pid 2041] SSL Library Error: -12269 The server has rejected your certificate as expired
检查CA链时，我们得到：
# openssl s_client -showcerts -verify 5 -connect ldap.example.com:443
verify depth is 5
CONNECTED(00000003)
depth=3 C = SE, O = AddTrust AB, OU = AddTrust External TTP Network, CN = AddTrust External CA Root
verify error:num=10:certificate has expired
notAfter=May 30 10:48:38 2020 GMT
verify return:1
depth=3 C = SE, O = AddTrust AB, OU = AddTrust External TTP Network, CN = AddTrust External CA Root
notAfter=May 30 10:48:38 2020 GMT
verify return:1
depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
verify error:num=10:certificate has expired
notAfter=May 30 10:48:38 2020 GMT
verify return:1
depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
notAfter=May 30 10:48:38 2020 GMT
verify return:1
depth=1 C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA
notAfter=Dec 31 23:59:59 2030 GMT
verify return:1
depth=0 OU = Domain Control Validated, OU = EssentialSSL Wildcard, CN = *.example.com
notAfter=Sep 16 23:59:59 2021 GMT
verify return:1
我如何删除或更新那些已过期的CA？
答案1：
以下是更新CA的方法
1)我建议在之前完整备份LDAP
2)将日期更改为2020年5月30日之前的日期
date -s"Fri May 29 12:05:19 EDT 2020"
3)在NSS DB中查找旧证书(IPA CA除外)'
$ ipa-cacert-manage list | grep -v 'IPA CA'
OLDCA
OLD-Intermediate-1
4)从所有NSS DB中删除旧证书
$ cat dblist.txt
/etc/ipa/nssdb
/etc/pki/pki-tomcat/alias
/etc/httpd/alias
/etc/dirsrv/slapd-EXAMPLE-COM (Replace EXAMPLE-COM with your realm)
/etc/httpd/alias
$ for DB in `cat dblist.txt`; do /usr/bin/certutil -d $DB -D -n OLDCA; done
$ for DB in `cat dblist.txt`; do /usr/bin/certutil -d $DB -D -n OLD-Intermediate-1; done
5)找到基础dn
$ cat /etc/ipa/default.conf | grep basedn
basedn = dc=example,dc=com
6)从LDAP中找到IPA CA以外的旧证书，并从步骤5的基础中替换'dc = example，dc = com '
$ ldapsearch -h localhost -p 389 -D cn=directory manager -W -b cn=certificates,cn=ipa,cn=etc,dc=example,dc=com | grep ^dn: | grep -v 'IPA CA'
dn: cn=OLDCA,cn=certificates,cn=ipa,cn=etc,dc=example,dc=com
dn: cn=OLD-Intermediate-1,cn=certificates,cn=ipa,cn=etc,dc=example,dc=com
7)删除IPA CA以外的旧LDAP证书
$ ldapdelete -h localhost -p 389 -D cn=directory manager -W"cn=OLDCA,cn=certificates,cn=ipa,cn=etc,dc=example,dc=com"
$ ldapdelete -h localhost -p 389 -D cn=directory manager -W"cn=OLD-Intermediate-1,cn=certificates,cn=ipa,cn=etc,dc=example,dc=com"
8)找到新的可工作的链，在例子中，它是从这里获取：https://support.sectigo.com/articles/Knowledge/Sectigo-Intermediate-Certificates?retURL=/apex/Com_KnowledgeWeb2Casepagesectigo&popup=false
[Download] SHA-2 Root : USERTrust RSA Certification Authority
[Download] Sectigo RSA Domain Validation Secure Server CA [ Intermediate ]
9)安装新的证书
$ echo"passw0rd" | kinit admin
$ ipa-cacert-manage -p"passw0rd" -n NEWCA -t C,, install NEWCA.crt
$ ipa-cacert-manage -p"passw0rd" -n NEW-Intermediate -t C,, install NEW-Intermediate.crt
$ ipa-certupdate
$ ipa-server-certinstall -w -d star.example.com.key star.example.com.crt --pin="passw0rd" --dirman-password="passw0rd"
$ ipa-cacert-manage list
EXAMPLE.COM IPA CA
NEWCA
NEW-Intermediate
The ipa-cacert-manage command was successful
10 )更新日期并重新启动
答案2：
我修复了这个问题：
抓取更新的证书：https://support.sectigo.com/Com_KnowledgeDetailPage?Id=kA01N000000rfBO
ipa-cacert-manage -p xxxxxxxx -t C,, install SHA-2 Root USERTrust RSA Certification Authority.crt ipa-cacert-manage -p xxxxxxxx -t C,, install SectigoRSADomainValidationSecureServerCA.crt 设置你的日期：
date -s "29 may 2020" kinit admin ipa-certupdate ![confluence wiki 接入 LDAP FreeIPA[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)