After some further investigation
# dsctl -l
slapd-INFRA-MICROBIOME-STUDIO
# dsctl slapd-INFRA-MICROBIOME-STUDIO status
Instance "INFRA-MICROBIOME-STUDIO" is running
# rpm -qa | grep 389-ds
389-ds-base-1.4.3.16-19.module+el8.4.0+636+837ee950.x86_64
389-ds-base-libs-1.4.3.16-19.module+el8.4.0+636+837ee950.x86_64
# ldapwhoami -H ldaps://identity.microbiome.studio
ldap_sasl_interactive_bind_s: Can't contact LDAP server (-1)
# ldapwhoami -H ldap://identity.microbiome.studio
ldap_sasl_interactive_bind_s: Can't contact LDAP server (-1)
And I can see that the certificate is missing as tjey are any ca.crt file
# ls /etc/dirsrv/slapd-INFRA-MICROBIOME-STUDIO/
cert9.db certmap.conf dse.ldif dse.ldif.bak dse.ldif.startOK key4.db noise.txt
pin.txt pkcs11.txt pwdfile.txt schema slapd-collations.conf
from a remote server I checked the ldap port:
$ sudo nmap -p 389 identity.microbiome.studio
PORT STATE SERVICE
389/tcp filtered ldap
Big thanks for your help, that is a real pleasure to see you