Host-HA offers investigation, fencing and recovery mechanisms for host that for
any reason are malfunctioning. It uses Activity and Health checks to determine
current host state based on which it may degrade a host or try to recover it. On
failing to recover it, it may try to fence the host.
The core feature is implemented in a hypervisor agnostic way, with two separate
implementations of the driver/provider for Simulator and KVM hypervisors. The
framework also allows for implementation of other hypervisor specific provider
implementation in future.
The Host-HA provider implementation for KVM hypervisor uses the out-of-band
management sub-system to issue IPMI calls to reset (recover) or poweroff (fence)
a host.
The Host-HA provider implementation for Simulator provides a means of testing
and validating the core framework implementation.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Support access to a host’s out-of-band management interface (e.g. IPMI, iLO,
DRAC, etc.) to manage host power operations (on/off etc.) and querying current
power state in CloudStack.
Given the wide range of out-of-band management interfaces such as iLO and iDRA,
the service implementation allows for development of separate drivers as plugins.
This feature comes with a ipmitool based driver that uses the
ipmitool (http://linux.die.net/man/1/ipmitool) to communicate with any
out-of-band management interface that support IPMI 2.0.
This feature allows following common use-cases:
- Restarting stalled/failed hosts
- Powering off under-utilised hosts
- Powering on hosts for provisioning or to increase capacity
- Allowing system administrators to see the current power state of the host
For testing this feature `ipmisim` can be used:
https://pypi.python.org/pypi/ipmisim
FS:
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Out-of-band+Management+for+CloudStack
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
- Backend should update if state was diabled and now has changed
- UI's fetch latest does not actually fetch latest
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
When sendAlert is called on an AlertManager impl, if it fails it logs that
something was wrong but does not log the body of the issue/error. This means
we tell the user/admin that there was an issue but don't share the "issue"
with them at all as the email alert fail (or that they were not initialized).
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
(cherry picked from commit 885c02dbd8)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Conflicts:
server/src/com/cloud/alert/AlertManagerImpl.java
usage/src/com/cloud/usage/UsageAlertManagerImpl.java
The managed context framework provides a simple way to add logic
to ACS at the various entry points of the system. As threads are
launched and ran listeners can be registered for onEntry or onLeave
of the managed context. This framework will be used specifically
to handle DB transaction checking and setting up the CallContext.
This framework is need to transition away from ACS custom AOP to
Spring AOP.
Addition of two new resource types i.e. Primary and Secondary storage space in the existing pool of
resource types.
Added methods to set the limits on these resources using updateResourceLimit
API command and to get a count using updateResourceCount. Also added calls in the
Templates, Volumes, Snapshots life cycle to check these limits and to increment/decrement the new
resource types
Resource Name :: Resource type number
Primary Storage 10
Secondary Storage 11
Also added jUnit Tests for the same.
Reviewed by : nitin mehta<nitin.mehta@citrix.com>
following changes
- introduced notion of event bus with publish, subscribe, unsubscribe
semantics
- a plug-in can implement the EventBus abstraction to provide event
bug to CloudStack
- A rabbitMQ based plug-in that can interact with AMQP servers to
provide message broker based event-bug
- stream lines, action events, usage events, alerts publishing in to
convineance classed which are also used to publish corresponding
event on to event bus
- introduced notion of state change event. On a state change, in the
state machine corrsponding to the resource, a state change event is
published on the event bug
- associated a state machined with Snapshot and Network objects
- Virtual Machine, Volume, Snaphost, Network object state changes wil
result in a state change event
Rohit Yadav
Santhosh Edukulla
Girish Chaudhari
Alex Huang
Alena Prokharchyk
Murali Reddy
Anshul Gangwar
Darren Shepherd
Prasanna Santhanam
Bharat Kumar
Harikrishna Patnala
Nitin Mehta
Sanjay Tripathi
Edison Su
Kelven Yang
Murali Reddy
Rohit Yadav
Joe Brockmeier
David Nalley
frank
kishan
Nitin