Michael Halsey
Dev Ops Engineer - intechnologyWiFi
[email protected]
Direct 01423 510650
Mobile 07467 145626
Head Office 01423 510510
Hi All,
I’m having issues using the engine-backup command.
When running:
engine-backup --mode=backup --scope=files —file=veng.bak --log backup.log
Please try '--log=backup.log' (with '=').
That was unfortunately only a typo in the email. And not when running the
actual command.
You have an EM DASH (U+2014) instead of two HYPHEN-MINUS (U+002D) in front of
'file='.
I suspect that my Outlook client for Mac has done that.
Where did you copy that command from?
From my command line.
I have attached the command including the entire output in plaintext.
I get back the following error:
readlink: missing operand
Try 'readlink --help' for more information.
/usr/bin/engine-backup: line 1405: : No such file or directory
Notifying engine
/usr/bin/engine-backup: line 1472: : No such file or directory
/usr/bin/engine-backup: line 1405: : No such file or directory
FATAL: Failed notifying engine
Log file is not created.
I receive similar errors when changing the scope to ‘all' and ‘db'.
I’m running:
CentOS Linux release 7.2.1511 (Core)
oVirt Engine Version: 3.6.2.6-1.el7.centos
Engine is running on bare metal.
I have tried this with SELinux in Permissive mode. No difference.
All packages are up to date.
Can anyone advise a fix for this or if I’m doing anything wrong?
Thanks in advance,
Michael Halsey
Dev Ops Engineer - intechnologyWiFi
[email protected]<mailto:[email protected]>
Direct 01423 510650
Mobile 07467 145626
Head Office 01423 510510
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Head Road, Harrogate, UK, HG3 1RY.
Registered in England 3916586.
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root ~ $ engine-backup --mode=backup --scope=files --file=veng.bak
--log=backup.log
engine-backup: back up and restore ovirt-engine environment
USAGE:
/usr/bin/engine-backup [--mode=MODE] [--scope=SCOPE] [--file=FILE]
[--log=FILE]
MODE is one of the following:
backup back up system into FILE
restore restore system from FILE
SCOPE is one of the following:
all If MODE=backup: backup everything below.
If MODE=restore: restore everything found
in FILE.
files product files only
db Engine database only
dwhdb Data Warehouse database only
reportsdb Reports database only
The option --scope can be passed more than once, with different scopes.
--file=FILE file to use during backup or restore
--log=FILE log file to use during backup or restore
--archive-compressor=COMPRESSOR
Use COMPRESSOR to compress the backup file, can be one of:
gzip
bzip2
xz
None
--files-compressor=COMPRESSOR compress the product files, same options as
--archive-compressor
--keep-temporary-data do not clean up temporary data on restore
--db-compressor=COMPRESSOR compress the Engine database, same options
as --archive-compressor
--db-dump-format=FORMAT
Engine database dump format; see pg_dump(1) for details. Can be one of:
plain
custom
--db-restore-jobs=JOBS number of restore jobs for the Engine
database,
when using custom dump format and
compressor None.
Passed to pg_restore -j. Defaults to 2.
--provision-db create a PostgreSQL database for the Engine
on restore
--change-db-credentials activate the following options, to restore
the Engine database using credentials other
than those stored in the backup itself.
If used, existing credentials are ignored.
--db-host=host set Engine database host
--db-port=port set Engine database port
--db-user=user set Engine database user
--db-passfile=file set Engine database password - read from
file
--db-password=pass set Engine database password
--db-password set Engine database password - interactively
--db-name=name set Engine database name
--db-secured set a secured connection for the Engine
database
--db-secured-validation validate host for Engine database
--dwh-db-compressor=COMPRESSOR compress the Data Warehouse database, same
options as --archive-compressor
--dwh-db-dump-format=FORMAT Data Warehouse database dump format, same
options as --db-dump-format
--dwh-db-restore-jobs=JOBS for Data Warehouse database, same as
--db-restore-jobs
--provision-dwh-db create a PostgreSQL database for Data
Warehouse on restore
--change-dwh-db-credentials activate the following options, to restore
the Data Warehouse database using
credentials other
than those stored in the backup itself.
If used, existing credentials are ignored.
--dwh-db-host=host set Data Warehouse database host
--dwh-db-port=port set Data Warehouse database port
--dwh-db-user=user set Data Warehouse database user
--dwh-db-passfile=file set Data Warehouse database password - read
from file
--dwh-db-password=pass set Data Warehouse database password
--dwh-db-password set Data Warehouse database password -
interactively
--dwh-db-name=name set Data Warehouse database name
--dwh-db-secured set a secured connection for the Data
Warehouse database
--dwh-db-secured-validation validate host for Data Warehouse database
--reports-db-compressor=COMPRESSOR compress the Reports database, same options
as --archive-compressor
--reports-db-dump-format=FORMAT Reports database dump format, same options
as --db-dump-format
--reports-db-restore-jobs=JOBS for Reports database, same as
--db-restore-jobs
--provision-reports-db create a PostgreSQL database for Reports on
restore
--change-reports-db-credentials activate the following options, to restore
the Reports database using credentials other
than those stored in the backup itself.
If used, existing credentials are ignored.
--reports-db-host=host set Reports database host
--reports-db-port=port set Reports database port
--reports-db-user=user set Reports database user
--reports-db-passfile=file set Reports database password - read from
file
--reports-db-password=pass set Reports database password
--reports-db-password set Reports database password -
interactively
--reports-db-name=name set Reports database name
--reports-db-secured set a secured connection for the Reports
database
--reports-db-secured-validation validate host for Reports database
--fast-restore the default for backup, equivalent to:
--archive-compressor=gzip \
--files-compressor=xz \
--db-dump-format=custom \
--db-compressor=None \
--dwh-db-dump-format=custom \
--dwh-db-compressor=None \
--reports-db-dump-format=custom \
--reports-db-compressor=None
In addition, you should pass, when restoring:
--db-restore-jobs=N \
--dwh-db-restore-jobs=N \
--reports-db-restore-jobs=N
where 'N' is around 150% of available cpu cores.
--small-size for a small backup file, equivalent to:
--archive-compressor=xz \
--files-compressor=xz \
--db-dump-format=plain \
--db-compressor=xz \
--dwh-db-dump-format=plain \
--dwh-db-compressor=xz \
--reports-db-dump-format=plain \
--reports-db-compressor=xz
--fast-backup for a fast backup, equivalent to:
--archive-compressor=gzip \
--files-compressor=xz \
--db-dump-format=custom \
--db-compressor=None \
--dwh-db-dump-format=custom \
--dwh-db-compressor=None \
--reports-db-dump-format=custom \
--reports-db-compressor=None
You can use one of --fast-restore, --small-size, --fast-backup, and after that
one of the other compressor/format options for further fine-tuning.
ENVIRONMENT VARIABLES
OVIRT_ENGINE_DATABASE_PASSWORD
Database password as if provided by --db-password=pass option.
OVIRT_DWH_DATABASE_PASSWORD
Database password as if provided by --dwh-db-password=pass option.
OVIRT_REPORTS_DATABASE_PASSWORD
Database password as if provided by --reports-db-password=pass option.
Wiki
See http://www.ovirt.org/Ovirt-engine-backup for more info.
To create a new user/database:
create role <user> with login encrypted password '<password>';
create database <database> owner <user> template template0
encoding 'UTF8' lc_collate 'en_US.UTF-8' lc_ctype 'en_US.UTF-8';
Open access in the firewall/iptables/etc. to the PostgreSQL port,
5432/tcp by default.
Locate pg_hba.conf within your distribution,
common locations are:
- /var/lib/pgsql/data/pg_hba.conf
- /etc/postgresql-*/pg_hba.conf
- /etc/postgresql/*/main/pg_hba.conf
and open access there by adding the following lines:
host <database> <user> 0.0.0.0/0 md5
host <database> <user> ::0/0 md5
Replace <user>, <password>, <database> with appropriate values.
Repeat for Engine, Data Warehouse, Reports as required.
readlink: missing operand
Try 'readlink --help' for more information.
/usr/bin/engine-backup: line 1405: : No such file or directory
Notifying engine
/usr/bin/engine-backup: line 1472: : No such file or directory
/usr/bin/engine-backup: line 1405: : No such file or directory
FATAL: Failed notifying engine_______________________________________________
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