OK, it seems I wasn't right. Opennebula DOES honor the INIT_SCRIPTS entry.
I am sorry for blaming you!
Why I got confused, though? Well, I was testing with a VM and its
template. With every new change that I made to the template I went to
the VM (via Sunstone GUI) and chose from the toolbar the button that
says "Delete recreate", thinking that it will do what it says - namely
it will delete the VM and then recreate it. Appears that wasn't quite
the case. When I clicked the rightmost red button and chose "Delete" and
then deployed the template again, the changes that I had made to the
template actually took effect.
Question: Why "Delete recreate" doesn't do just like when you manually
delete the VM and then re-deploy from template?
P.S.: Kerry, I discovered how to create CONTEXT files and put them to
the "files" datastore, don't need to answer me. There is a nice menu in
Sunstone called "Files & Kernels" which I somehow kept skipping. :)
About your problem with test.sh - see if you have fallen in the same
trap as me - try to first manually delete the VM and then re-deploy it
from template for your changes to take effect. Other than that, all
settings work like expected.
Thanks,
Pavel Tankov
On 28.11.2014 12:44, Pavel Tankov wrote:
Hello Kerry,
I am having the same problem. I think I discovered why your test.sh
script doesn't get executed:
!!! Opennebula completely disregards the INIT_SCRIPTS="test.sh" entry
in your CONTEXT=[...] section of the template !!!
How to verify? After your VM spins up, login and mount the CONTEXT
image like so:
mount -t iso9660 /dev/sr0 /mnt
Enter /mnt and you will find your test.sh file there. So far so good.
There is one more file there - context.sh. You can see that it
contains the variables from your CONTEXT=[...] section of the
template. You can see that it contains an entry like FILES_DS='...' or
FILES='/var/lib/one/datastores/2/test.sh' that mentions your script.
HOWEVER, it does NOT contain an entry like INIT_SCRIPTS="test.sh". OK,
so now open /etc/one-context.d/99-execute-scripts. That script is
responsible for executing your custom scripts. Here it is:
#!/bin/bash
MOUNT_DIR=/mnt
TMP_DIR=/tmp/one-context-tmp
if [ -z "$INIT_SCRIPTS" ]; then
if [ -f "$MOUNT_DIR/init.sh" ]; then
INIT_SCRIPTS=init.sh
fi
fi
mkdir -p $TMP_DIR
cd $MOUNT_DIR
for f in $INIT_SCRIPTS; do
cp $f $TMP_DIR
chmod +x $TMP_DIR/$f
$TMP_DIR/$f
done
In the beginning it checks to see if there is an environment
variableINIT_SCRIPTS defined. It is never defined, no matter whether
you put INIT_SCRIPTS="test.sh" in your CONTEXT=[...] or not because,
as it seems, Opennebula silently disregards it. So, in that case the
99-execute-scripts script continues with the default, which is init.sh.
TL; DR;
Name your script init.sh and it will be executed.
Opennebula devs, please, fix this!
P.S.: Kerry, you say:
/> I have created "test.sh" and put it into the "files" datastore on the//head
node./
Please, explain how you did it, because I can't seem to find a
step-by-step explanation about this in the documentation.
Thanks,
-- Pavel Tankov
On 12.09.2014 02:28, kerryhall . wrote:
Hi Valentin,
I appreciate the help! I managed to create a new CONTEXT image, which
copied my test.sh to the datastore successfully, and I updated my
template to include those two lines you specified.
However, it looks like test.sh is not executing on vm spin up.
Currently all it does is "touch /root/test.tmp" to confirm execution.
However when I booted my vm, this file was not created. Also tried
doing "useradd tmp" as well, with no luck. test.sh has executable
flag set for user, group, and other. I also tried setting permissions
of test.sh to 777, still no luck.
Thanks!!
Kerry
On Mon, Sep 8, 2014 at 11:27 PM, Valentin Bud <valentin....@gmail.com
<mailto:valentin....@gmail.com>> wrote:
Hello Kerry,
Do you have a registered image of type CONTEXT with the name of
`test.sh`
in the files datastore?
The file you specify in FILES_DS can be found in the
contextualization CDROM
on the VM (/dev/disk/by-label/CONTEXT).
The following would run a `test.sh` script when the VM is spun up
at the end
of the contextualization routine [1].
CONTEXT = [
FILES_DS="$FILE[IMAGE=\"test.sh\"]",
INIT_SCRIPTS="test.sh",
...
]
[1]:
https://github.com/OpenNebula/addon-context-linux/blob/master/base/etc/one-context.d/99-execute-scripts
Best,
Valentin
On Mon, Sep 8, 2014 at 11:09 PM, kerryhall . <kerryh...@gmail.com
<mailto:kerryh...@gmail.com>> wrote:
Thanks! I'm still having issues here unfortunately. I tried
putting:
FILES_DS="$FILE[IMAGE=\"test.sh\"]"
into my template context section, but I get:
"User 0 does not own an image with name: test.sh"
I'm not trying to include an image, I just want test.sh (a
file in my file datastore) to get copied to anywhere on my
vm's filesystem. (And eventually, I want test.sh to get run
on vm creation, or failing that, every time the vm starts)
Thanks!!
On Fri, Jul 25, 2014 at 11:18 PM, Valentin Bud
<valentin....@gmail.com <mailto:valentin....@gmail.com>> wrote:
Hello Kerry,
Under "Defining Context" [1] there is an example how to
use FILES_DS.
FILES_DS="$FILE[IMAGE=\"test.sh\"]
[1]:
http://docs.opennebula.org/4.6/user/virtual_machine_setup/cong.html
Best,
Valentin
On Fri, Jul 25, 2014 at 11:29 PM, kerryhall .
<kerryh...@gmail.com <mailto:kerryh...@gmail.com>> wrote:
Hi folks,
I am trying to run a bash script on a vm as it gets
spun up. I've read:
http://docs.opennebula.org/4.6/user/virtual_machine_setup/cong.html
but there isn't too much to go on there.
I have created "test.sh" and put it into the "files"
datastore on the head node.
The issue I am having is that the syntax in the
"Defining Context" section of
http://docs.opennebula.org/4.6/user/virtual_machine_setup/cong.html
is ambiguous, specifically the "files_ds" section. I
have tried:
FILES_DS="$FILE[\"test.sh\"]"
and
FILES_DS="/var/lib/one/datastores/2/test.sh"
As a first step, I'm just trying to get this file
included in my vm at all.
Thanks!
Kerry
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