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Iliya Manolov
slapos
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ea046a0e
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ea046a0e
authored
Nov 12, 2013
by
Cédric de Saint Martin
Committed by
Rafael Monnerat
Jul 09, 2014
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Resilient stack: add procedure to check it is working.
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stack/resilient/README.txt
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ea046a0e
Base resilient stack
Base resilient stack
====================
====================
...
@@ -231,6 +230,9 @@ Deploying your resilient software
...
@@ -231,6 +230,9 @@ Deploying your resilient software
---------------------------------
---------------------------------
You can provide sla parameters to each request you make (a lot: for export, import and pbs).
You can provide sla parameters to each request you make (a lot: for export, import and pbs).
If you don't provide sla parameters, SlapOS Master will automatically deploy the instances in a
different network, one instance per network at most.
example:
example:
Here is a small example of parameters you can provide to control the deployment (case of a runner):
Here is a small example of parameters you can provide to control the deployment (case of a runner):
<?xml version='1.0' encoding='utf-8'?>
<?xml version='1.0' encoding='utf-8'?>
...
@@ -260,3 +262,28 @@ We can find 2 kinds of magic keys:
...
@@ -260,3 +262,28 @@ We can find 2 kinds of magic keys:
* id : example, in "-sla-2-foo" 2 is the magic key and the parameter will be used for each request with id 2 (in case of kvm: kvm2 and PBS 2)
* id : example, in "-sla-2-foo" 2 is the magic key and the parameter will be used for each request with id 2 (in case of kvm: kvm2 and PBS 2)
* nameid : example, in "-sla-kvm2-foo", foo will be used for kvm2 request. Name for pbs is "pbs" -> "-sla-pbs2-foo".
* nameid : example, in "-sla-kvm2-foo", foo will be used for kvm2 request. Name for pbs is "pbs" -> "-sla-pbs2-foo".
IMPORTANT NOTE: in case the same foo parameter is asked for the group, the nameid key prevail
IMPORTANT NOTE: in case the same foo parameter is asked for the group, the nameid key prevail
How to check that resiliency is working
---------------------------------------
Because it is still a young stack, the resilient stack needs a few checks
to ensure that backups and resiliency of your service is correctly done.
To do that, you need to:
* Log through SSH to the machine hosting the main instance, go to the
partition, and check the content of var/log/crond.log file to see if there
is error.
* Log through SSH to the machine hosting a PBS, go to the PBS partition, and
check var/log/equeue.log file to see if there is any error, then check that
backup is at srv/backup/pbs/
* Log through SSH to the machine hosting a clone, go to the clone partition, and
check that backup is at srv/backup/kvm (for KVM) and that data is correctly
replicated (for kvm, there should be a srv/virtual.qcow2 image, for runner,
there should be a srv/runner/projet/XXX directory, etc).
Please note that currently, the backup is done once every two days by default.
So, at first, if no backup is there yet it doesn't mean that resiliency doesn't work.
Note: This should be automatically checked by promises.
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