by Rick Jerz.
Limit uploads to something small, like 16MB.
Are videos being uploaded? If so, move videos to a separate video server and link to them from within Moodle.
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Re: Moodle Storage Management
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Re: Moodle Storage Management
by Ken Task.
This sorta falls under 'one solution *does not* fit all'! Much depends ...
Nothing internal like a plugin of which I am aware.
However, this is a tool (command line only) that will help called moosh
https://moosh-online.com/
and for specific commands related to files
https://moosh-online.com/commands/
Examples of some of the commands:
file-datacheck
Go through all files in Moodle data and check them for corruption. The check is to compare file's SHA to their file names.
file-dbcheck
Check that all files recorder in the DB do exist in Moodle data directory.
Are you doing autobackups?
Another Moosh example:
Example 4: Remove all automated backups and reclaim the space
moosh file-list -i 'component="backup" AND filearea="automated"' | moosh file-delete -s
moosh file-delete --flush
Are your teachers running backups of their own? Are they cleaning up OLD backups they really no longer need?
One could attempt to use repos for things like videos/audios .. etc.
'spirit of sharing', Ken
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Re: /usr/local/mysql-5.6.24-osx10.8-x86_64/data/moodle/mdl_logstore_standard_log.ibd
by Liz Johnson.
Thank you so much for your help!
I wasn’t able to resolve the issue - in fact it has worsened! I am going to post another (different) plea for help!
Thx again
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Re: Moodle Storage Management
by Mathew Gancarz.
I've found this report plugin to be useful to flag users or courses that use a disproportionate amount of space that you can then target for archiving/cleanup:https://moodle.org/plugins/report_coursesize
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Re: How does using the Mobile App affect server performance?
by ranjith tk.
There is a fairly efficient Mac memory management tool that provides quick load of applications and good performance. MAC also cache things in free RAM of the system in order to quick load them from memory than hard disk for fast response.
There are times that when your Mac can slow down as more stuff is running in your system and your RAM is cluttering up. When you find Mac RAM is filling up due to increased workload on the OS X then the time for a Mac memory clean tool. By using MAC Memory Clean Apps, you can get free up inactive memory for other tasks.
link:https://mashtips.com/mac-memory-clean-apps/↧
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Re: Moodle Installation in Rural Area
by James Steerpike.
The original post wanted " correct installation of Moodle platform (to be powerful and well established) on a server that I am currently working with.". That server already has 2GB of Ram - twice that of a Pi - and probably a faster CPU. I am assuming rural does not mean a place without electricity.
My solution (assuming the Win machine is not used for other purposes) would be to install a basic Linux distro and Moodle. Add a router ( approx the cost of a Pi) connected by a cable and you have a system which could handle many connections.
Maybe you could use a Pi but why buy a new computer
when you already have one that can handle the job? Portability was not
specified by the original poster. And powerful and well established does
not sound like a classroom of students connecting to the wireless
output of a battery driven under-powered computer using a SD card for
storage.
Two additional drawbacks of the mobile Pi. There is no shutdown switch on a Pi and if you are short of time or careless and you simply cut the power, you may really screw up your databases and Moodle. You can use a Mobile phone to shutdown but more complexity. And my own Pi died in a thunder storm - the only electrical thing that died in the house and probably my fault for using a phone charger rather than an approved power supply.
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Re: Moodle Installation in Rural Area
by Visvanath Ratnaweera.
The original poster has left the forum end of August the latest. No, the second round of discussion is about the possibilities with the new class of micro-computers, especially Raspberry Pi.
About shutting down the MoodleBox, check https://moodle.org/plugins/tool_moodlebox.
About shutting down the MoodleBox, check https://moodle.org/plugins/tool_moodlebox.
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Running cron from multiple webservers
by Christos Savva.
Hello Moodlers ,
I know this was asked before, but since there was no answer I though I will give it another try
Other Posts about this:
https://moodle.org/mod/forum/discuss.php?d=358434
https://moodle.org/mod/forum/discuss.php?d=344181
Based on the latest Moodle Docs, we can now run the cron on multiple webservers (link).
Today I tried to do just that, while the cron was running on node1 I tried to run the cron on node 2.
Node 1 finished the cron ok, node 2 gave an error (below) and stopped processing the cron and exited
The error
Scheduled task complete: Forum mailings and maintenance jobs (mod_forum\task\cron_task)
Execute adhoc task: core\task\refresh_mod_calendar_events_task
... started 14:11:23. Current memory use 27.3MB.
Refreshing events for assign
Default exception handler: Coding error detected, it must be fixed by a programmer: A lock was created but not released at:
[dirroot]/lib/classes/task/manager.php on line 448
Code should look like:
$factory = \core\lock\lock_config::get_lock_factory('type');
$lock = $factory->get_lock(Resource id #854);
$lock->release(); // Locks must ALWAYS be released like this.
Debug:
Error code: codingerror
* line 117 of /lib/classes/lock/lock.php: coding_exception thrown
* line 91 of /lib/cronlib.php: call to core\lock\lock->__destruct()
* line 61 of /admin/cli/cron.php: call to cron_run()
!!! Coding error detected, it must be fixed by a programmer: A lock was created but not released at:
[dirroot]/lib/classes/task/manager.php on line 448
Code should look like:
$factory = \core\lock\lock_config::get_lock_factory('type');
$lock = $factory->get_lock(Resource id #854);
$lock->release(); // Locks must ALWAYS be released like this.
!!!
So is it possible to run the cron on different webservers for the same Moodle instance or not?
Since cron found that there was a lock already in place for that task, why the cron didnt continue with the next task and it exited?
Kind regards
Christos
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Re: Moodle Installation in Rural Area
by Nicolas Martignoni.
> There is no shutdown switch on a Pi
But it's very easy to add one. It only needs a one line edit in a file (see here: https://github.com/martignoni/moodlebox/issues/53), and a single button with jumpers (see here https://moodle.org/mod/forum/discuss.php?d=363756).
PS. Next disk-image for SD of MoodleBox will have this line added by default.
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Re: Running cron from multiple webservers
by Matteo Scaramuccia.
Hi Christos,
that's a good question: AFAIK everyone running a cluster is used to have a node not serving web requests but running Moodle cron.
That being said, the lock is there to preserve multiple nodes to perform the same operation with unpredictable results when overlapping on the same operation: I never thought that it was been designed to allow skipping a locked task and passing over the next.
What is your Moodle version?
HTH,
Matteo
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Re: Running cron from multiple webservers
by Andrew Nicols.
Hi Matteo,
It is now possible to run cron on multiple nodes simultaneously.
The locking system is designed to lock individual tasks and if a task is locked, it will fail to obtain the lock and move on to the next task.
Andrew
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Re: Running cron from multiple webservers
by Andrew Nicols.
Hi Christos,
It is possible to run Cron on multiple servers simultaneously.
This lock messages is unlikely related to running on multiple servers, and more likely due to a bug somewhere in one of the cron tasks which has meant that the task failed (maybe is threw an Exception, or experienced a Fatal error). As a result, the thread was ended and the lock was not released via the normal processes. There is a shutdown handler which runs during the PHP exit which is still called. One of the tasks it performs is to release locks. If it finds any locks to release, it warns because they have not been closed properly for some reason.
It looks like there is a bug of some kind in mod_assign which prevents the refreshing of the calendar events there.
We have made improvements to the way in which this works, including better diagnostics in more recent Moodle versions.
Which version of Moodle are you using? Have you ensured that you have the same version of PHP installed on all nodes?
Andrew
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Re: Running cron from multiple webservers
by Christos Savva.
Hi Andrew and thanks for your reply
My Moodle version is 3.3.2+ (Build: 20170915)
And yes the 2 nodes (web servers) are exactly the same (created the second instance from Image of the first).
Could you please let me know how I will identify the error and maybe fix it?
Kind regards
Christos
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Re: Running cron from multiple webservers
by Andrew Nicols.
I'd recommend enabling the debugging and debugdisplay. You can also run a specific scheduled task (admin/tool/task/cli/schedule_task.php --execute="\core\task\refresh_mod_calendar_events_task").
Hopefully this should give a stacktrace and some more debugging information.
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Re: Running cron from multiple webservers
by Christos Savva.
I executed
sudo -uapache /usr/bin/php task/cli/schedule_task.php --execute="\core\task\refresh_mod_calendar_events_task"
And I got this
Task '\core\task\refresh_mod_calendar_events_task' not found
I then checked /admin/tool/task/scheduledtasks.php
and indeed there is no such task :/
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Re: Running cron from multiple webservers
by Matteo Scaramuccia.
TNX Andrew for stepping into the discussion !
Guessing we're talking about MDL-55980, available on 3.3+: https://docs.moodle.org/dev/Moodle_3.3_release_notes#For_administrators .
Edit: I was wrong, MDL-25499 including several minor issues being resolved in the latest 2.7 (https://docs.moodle.org/dev/Moodle_2.7_release_notes#Cron).
MDL-51707 looks like relevant too: fixed in 2.8.9, 2.9.3 and above.
HTH,
Matteo
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Re: Running cron from multiple webservers
by Christos Savva.
I just tried again to run the cron on both nodes. This time both competed.
Node 1 gave this output
Scheduled task complete: Background processing for question engine (core\task\question_cron_task)
Execute adhoc task: core\task\refresh_mod_calendar_events_task
... started 10:10:48. Current memory use 44.5MB.
Refreshing events for assign
Refreshing events for assignment
Refreshing events for book
Refreshing events for bootstrapelements
Refreshing events for chat
Refreshing events for choice
Refreshing events for choicegroup
Refreshing events for data
Refreshing events for feedback
Refreshing events for folder
Refreshing events for forum
Refreshing events for glossary
Refreshing events for imscp
Refreshing events for label
Refreshing events for lesson
Refreshing events for lti
Refreshing events for page
Refreshing events for quiz
Refreshing events for resource
Refreshing events for scorm
Refreshing events for survey
Refreshing events for thesisproposition
Refreshing events for turnitintooltwo
Refreshing events for url
Refreshing events for wiki
Refreshing events for workshop
Node 2 didn't execute: core\task\refresh_mod_calendar_events_task at all
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Re: Running cron from multiple webservers
by Christos Savva.
Thank Matteo for your time and help
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Is Manchester City striker Sergio Aguero underrated in the Premier League?
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Re: Moodle Installation in Rural Area
by Nicolas Martignoni.
> There is no shutdown switch on a Pi
But it's very easy to add one. It only needs a one line edit in a file (see here: https://github.com/martignoni/moodlebox/issues/53), and a single button with jumpers (see here https://moodle.org/mod/forum/discuss.php?d=363756).
PS. Next disk-image for SD of MoodleBox will have this line added by default.
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