Failed to run backup ansible-playbook on subcloud

[Sunjae Kim]

Brief Description
-----------------
Backing up on subcloud fails with following log:

$ ansible-playbook /usr/share/ansible/stx-ansible/playbooks/backup.yml -e "ansible_become_pass=XXX admin_password=XXX"

~~ snipped~~
2020-11-26 11:56:45,674 p=3980323 u=sysadmin | TASK [backup/backup-system : Backup ldap db] **********************************************************************************************************************************************************
2020-11-26 11:56:45,834 p=3980323 u=sysadmin | fatal: [localhost]: FAILED! => {"changed": true, "cmd": ["slapcat", "-d", "0", "-F", "/etc/openldap/schema", "-l", "/opt/backups/ansible.inJSvM/ldap/ldap.db"], "delta": "0:00:00.018562", "end": "2020-11-26 11:56:45.816511", "msg": "non-zero return code", "rc": 1, "start": "2020-11-26 11:56:45.797949", "stderr": "slapcat: bad configuration directory!", "stderr_lines": ["slapcat: bad configuration directory!"], "stdout": "", "stdout_lines": []}
2020-11-26 11:56:45,841 p=3980323 u=sysadmin | TASK [backup/backup-system : Remove the temp dir] *****************************************************************************************************************************************************
2020-11-26 11:56:45,988 p=3980323 u=sysadmin | changed: [localhost]
2020-11-26 11:56:45,993 p=3980323 u=sysadmin | TASK [backup/backup-system : Remove the backup in progress flag file] *********************************************************************************************************************************
2020-11-26 11:56:46,133 p=3980323 u=sysadmin | changed: [localhost]
2020-11-26 11:56:46,138 p=3980323 u=sysadmin | TASK [backup/backup-system : Clear backup_in_progress alarm] ******************************************************************************************************************************************
2020-11-26 11:56:46,251 p=3980323 u=sysadmin | changed: [localhost]
2020-11-26 11:56:46,256 p=3980323 u=sysadmin | TASK [backup/backup-system : Fail if alarm script throws an exception] ********************************************************************************************************************************
2020-11-26 11:56:46,270 p=3980323 u=sysadmin | PLAY RECAP ********************************************************************************************************************************************************************************************
2020-11-26 11:56:46,271 p=3980323 u=sysadmin | localhost : ok=38 changed=27 unreachable=0 failed=1

---

ldap db back up fails because of none config ldif file.
$ sudo slapcat -d 1 -F /etc/openldap/schema -l ~/ldap.db
Password:
5fbf3501 slapcat init: initiated tool.
5fbf3501 slap_sasl_init: initialized!
5fbf3501 bdb_back_initialize: initialize BDB backend
5fbf3501 bdb_back_initialize: Berkeley DB 5.3.21: (May 11, 2012)
5fbf3501 hdb_back_initialize: initialize HDB backend
5fbf3501 hdb_back_initialize: Berkeley DB 5.3.21: (May 11, 2012)
5fbf3501 mdb_back_initialize: initialize MDB backend
5fbf3501 mdb_back_initialize: LMDB 0.9.18: (February 5, 2016)
5fbf3501 backend_startup_one: starting "cn=config"
5fbf3501 ldif_read_file: no entry file "/etc/openldap/schema/cn=config.ldif"
5fbf3501 send_ldap_result: conn=-1 op=0 p=0
slapcat: bad configuration directory!

Severity
--------
Minor

Steps to Reproduce
------------------
1. Run "ansible-playbook /usr/share/ansible/stx-ansible/playbooks/backup.yml -e "ansible_become_pass=XXX admin_password=XXX" ON an controller on sub-cloud

Expected Behavior
------------------
Completed backing up without any failures

Actual Behavior
----------------
Failed on "Backup ldap db" task and not generated backup tar file

Reproducibility
---------------
100% reproducible

System Configuration
--------------------
Distributed Cloud
-. Central Could - AIO duplex
-. Sub Cloud - Standard with dedicated storages

Branch/Pull Time/Commit
-----------------------
StarlingX r4.0.1

Last Pass
---------
N/A, I have not tried to backup before.

Timestamp/Logs
--------------
2020-11-26 11:56:45,834 p=3980323 u=sysadmin | fatal: [localhost]: FAILED! => {"changed": true, "cmd": ["slapcat", "-d", "0", "-F", "/etc/openldap/schema", "-l", "/opt/backups/ansible.inJSvM/ldap/ldap.db"], "delta": "0:00:00.018562", "end": "2020-11-26 11:56:45.816511", "msg": "non-zero return code", "rc": 1, "start": "2020-11-26 11:56:45.797949", "stderr": "slapcat: bad configuration directory!", "stderr_lines": ["slapcat: bad configuration directory!"], "stdout": "", "stdout_lines": []}

Test Activity
-------------
Feature Testing

Workaround
----------
No Idea but I think LDAP runs on not sub-cloud but central cloud so ldap db back up should be executed only on central cloud if the system is configured as distributed cloud.

[Ghada Khalil (gkhalil)]

screening: marking as low priority due to lack of activity

[John Kung (john-kung)]

Duplicate of Fix Released https://bugs.launchpad.net/starlingx/+bug/1999151