VmBackup | XenServer simple backup script | Continuous Backup library
kandi X-RAY | VmBackup Summary
kandi X-RAY | VmBackup Summary
Copyright (C) 2019 Northern Arizona University. Title: NAUbackup / VmBackup - a XenServer vm-export and vdi-export Backup Script. Package Contents: README.md (this file), VmBackup.py, example.cfg.
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Top functions reviewed by kandi - BETA
- Run vmBackup .
- Gather VM metadata .
- Removes duplicates from duplicate entries .
- Send an email .
- Save key and value to config file .
- Generate usage config file .
- Check if configuration is valid .
- Add vms to exclude list
- Print configuration information .
- Print usage examples .
VmBackup Key Features
VmBackup Examples and Code Snippets
Community Discussions
Trending Discussions on Continuous Backup
QUESTION
ANSWER
Answered 2022-Feb-22 at 10:59I am not sure if you have seen this message in the portal when you created the account/also mentioned in the doc
"You will not be able to switch between the backup policies after the account has been created"
since you need to select either "Periodic" or "Continuous" at the creation of Cosmos Account, it becomes mandatory.
Update:
You will not see the above in portal anymore, you can Switch from "Periodic" to "Continous" on an existing account and that cannot be reverted. You can read more here.
QUESTION
What would be the consistency of the continuous backup of the write region if the database is using bounded staleness consistency? Will it be equivalent to strong consistent data assuming no failovers happened?
Thanks Guru
...ANSWER
Answered 2021-Nov-25 at 17:15Backups made from any secondary region will have data consistency defined by the guarantees provided by the consistency level chosen. In the case of strong consistency, all secondary region backups will have completely consistent data.
Bounded staleness will have data that may have stale or inconsistent data inside the defined staleness window (minimum 300 seconds or 100k writes). Outside of that staleness window the data will be consistent.
Data for the weaker consistency levels will have no guarantees for consistency from backups in secondary regions.
QUESTION
MongoDB has deprecated the continuous back up of data. It has recommended using CPS (Cloud provider snapshots). As far as I understood, snapshots isn't really going to be effective compared to continuous backup coz, if system breaks, then we can only be able to restore the data till the previous snapshot which isn't gonna make the database up-to-date or close to it atleast.
Am I missing something here in my understanding?
...ANSWER
Answered 2020-May-19 at 10:12Cloud provider snapshots can be combined with point in time restore to give the recovery point objective you require. With oplog based restores you can get granularity of one second.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install VmBackup
For all of the XenServers in a given pool, mount the new /snapshots share.
Finish creating a share directory structure that meets your needs. Here are the VmBackup.py default subdirectories which can be changed: /snapshots/BACKUPS - this is for all VM backups /snapshots/NAUbackup - this is for the VmBackup.py script, any config files, and the status.log summary file. /snapshots/NAUbackup/logs - this is for redirecting your cronjob VmBackup.py output.
Download VmBackup.py, example.cfg, README.md to your execution location, such as /snapshots/NAUbackup
Inspect and customize the comments in page one of the VmBackup.py code. Here are some of the changes you may want to configure:
Find text HARD CODED DEFAULTS - these values are in effect anytime you run VmBackup.py with a command line vm-selector. Many of these code defaults can also be overridden in the config-file.
Find text OPTIONAL - if you want an automatic email to be sent at end of VmBackup then follow the instructions for the label MAIL_ENABLE.
Install the XenServer Software Development Kit from www.citrix.com/downloads - download the XenServer and copy file XenAPI.py into the same directory where VmBackup.py exists. To verfy XenApi, execute VmBackup with a valid password and some simple vm-name. Example: ./VmBackup.py password vm-name preview Note: if password has any special characters, then escape with back slash: ./VmBackup.py pass$word vm-name
Follow some VmBackup usage examples in the next section and try some examples with your VMs. Initially use the preview option, followed by a non-preview execution to actually see the VM export process. If you have a test XenServer environment, then utilize this for test verification. Note that if multiple definitions of VMs and/or VDIs are put into the configuration file, the last valid definition will take precedence over any earlier detected definitions. In addition, excludes will take precedence over any backup definitions.
VM Recovery testing is an important part of the setup, see later section. Become familiar with the /snapshots/BACKUPS/vm-name directory structure and file contents, also in later section. After backing up some VMs then restore them on a test system and verify VM functionality.
Plan your backup strategy, such as weekly, bi-monthly, monthly frequencies. How many copies of each backup do you want to keep? How long do your backup configurations take to execute and does this fit in with your XenServer processing priorities?
Execute your plan which typically involves setting up a XenServer crontab schedule, see later section.
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