This pull request (PR) implements a Distributed Resource Scheduler (DRS) for a CloudStack cluster. The primary objective of this feature is to enable automatic resource optimization and workload balancing within the cluster by live migrating the VMs as per configuration.
Administrators can also execute DRS manually for a cluster, using the UI or the API.
Adds support for two algorithms - condensed & balanced. Algorithms are pluggable allowing ACS Administrators to have customized control over scheduling.
Implementation
There are three top level components:
Scheduler
A timer task which:
Generate DRS plan for clusters
Process DRS plan
Remove old DRS plan records
DRS Execution
We go through each VM in the cluster and use the specified algorithm to check if DRS is required and to calculate cost, benefit & improvement of migrating that VM to another host in the cluster. On the basis of cost, benefit & improvement, the best migration is selected for the current iteration and the VM is migrated. The maximum number of iterations (live migrations) possible on the cluster is defined by drs.iterations which is defined as a percentage (as a value between 0 and 1) of total number of workloads.
Algorithm
Every algorithms implements two methods:
needsDrs - to check if drs is required for cluster
getMetrics - to calculate cost, benefit & improvement of a migrating a VM to another host.
Algorithms
Condensed - Packs all the VMs on minimum number of hosts in the cluster.
Balanced - Distributes the VMs evenly across hosts in the cluster.
Algorithms use drs.level to decide the amount of imbalance to allow in the cluster.
APIs Added
listClusterDrsPlan
id - ID of the DRS plan to list
clusterid - to list plans for a cluster id
generateClusterDrsPlan
id - cluster id
iterations - The maximum number of iterations in a DRS job defined as a percentage (as a value between 0 and 1) of total number of workloads. Defaults to value of cluster's drs.iterations setting.
executeClusterDrsPlan
id - ID of the cluster for which DRS plan is to be executed.
migrateto - This parameter specifies the mapping between a vm and a host to migrate that VM. Format of this parameter: migrateto[vm-index].vm=<uuid>&migrateto[vm-index].host=<uuid>.
Config Keys Added
ClusterDrsPlanExpireInterval
Key drs.plan.expire.interval
Scope Global
Default Value 30 days
Description The interval in days after which old DRS records will be cleaned up.
ClusterDrsEnabled
Key drs.automatic.enable
Scope Cluster
Default Value false
Description Enable/disable automatic DRS on a cluster.
ClusterDrsInterval
Key drs.automatic.interval
Scope Cluster
Default Value 60 minutes
Description The interval in minutes after which a periodic background thread will schedule DRS for a cluster.
ClusterDrsIterations
Key drs.max.migrations
Scope Cluster
Default Value 50
Description Maximum number of live migrations in a DRS execution.
ClusterDrsAlgorithm
Key drs.algorithm
Scope Cluster
Default Value condensed
Description DRS algorithm to execute on the cluster. This PR implements two algorithms - balanced & condensed.
ClusterDrsLevel
Key drs.imbalance
Scope Cluster
Default Value 0.5
Description Percentage (as a value between 0.0 and 1.0) of imbalance allowed in the cluster. 1.0 means no imbalance
is allowed and 0.0 means imbalance is allowed.
ClusterDrsMetric
Key drs.imbalance.metric
Scope Cluster
Default Value memory
Description The cluster imbalance metric to use when checking the drs.imbalance.threshold. Possible values are memory and cpu.
* modify NSX resource naming convention
* remove unused imports
* add a setup phase between desgin and implementation of a network for intermediary steps
* add method to all classes
This PR adds new functionality to copy snapshots across zones and take snapshots for multiple zones.
Copy functionality is similar to template copy. The source zone acts as the web server from where the destination zone(s) can download the snapshot files. For this purpose, a new API - `copySnapshot` has been added. The response for copySnapshot will be returning zone and download details from the first destination zone of the request. This behaviour is similar to the `copyTemplate` API.
In a similar manner, multiple zones can be selected while taking the snapshots or creating snapshot policies. For this snapshot will be taken in the base zone(in which volume is present) and then copied to the additional zones. A new parameter - `zoneids` has been added to `createSnapshot` and `createSnapshotPolicy` APIs.
As snapshots can be present on multiple zones (secondary stores), a new parameter `zoneid` has been added to delete the snapshot copy on a specific zone.
`listSnapshots` API has been updated to allow listing snapshot entries for different zones/datastores. New parameters - `showUnique`, `locationType` have been added.
Events generated during snapshot operations will now be linked to the snapshot itself rather than the volume of the snapshot.
`listSnapshotPolicies` and `createSnapshotPolicy` APIs will return zone details of the zones in which backup will be scheduled for the policy.
----
New API added
`copySnapshot`
Request and response params updated for APIs
```
- listSnapshots
- deleteSnapshot
- createTemplate
- listZones
- listSnapshotPolicies
- createSnapshotPolicy
```
UI updated for
- Snapshot detail view
- Create snapshot form
- Create snapshot policy form
- Create volume (from snapshot) form
- Create template (from snapshot) form
Doc PR: https://github.com/apache/cloudstack-documentation/pull/344
PR: https://github.com/apache/cloudstack/pull/7873
* [NSX] Refactor API wrapper operations
* Big refactor
* Address review comment
* change network cidr to cidr to prevent NPE
* add domain and zone names to the various networks - vpc & tier
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Co-authored-by: Pearl Dsilva <pearl1594@gmail.com>
Co-authored-by: Stephan Krug <stephan.krug@scclouds.com.br>
Co-authored-by: dahn <daan.hoogland@gmail.com>
Co-authored-by: GaOrtiga <49285692+GaOrtiga@users.noreply.github.com>
Co-authored-by: Gabriel Pordeus Santos <gabrielpordeus@gmail.com>
Co-authored-by: Gabriel <gabriel.fernandes@scclouds.com.br>
This PR fixes few issues:
- check ip range of new network instead of network cidr, so that the two networks can use same cidr but no IP conflicts.
- Private gateways: return vlan number only for root admins
- when update isolated network, check new guest vm cidr and IPs of neworks/vpc gateways associated to it
* Create DHCP relay command and execute request
* In progress integrate with networking
* Create DHCP relay config on the network VR allocation
* Revert domain router dao changes
* Create DHCP relay con VR nic plug to NSX network
* Link DHCP relay config to segment after creation
When ACS is synchronizing the Veeam backups, if one backup fails in this process, all the other backups are skipped and ignored. This behavior is fixed by this PR; if one backup fails in syncronization, only this backup is skipped, and the others continue the process.
Co-authored-by: SadiJr <sadi@scclouds.com.br>
Don't use LibvirtServerDiscoverer's processHostAdded() in CustomServerDiscoverer
Signed-off-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: Marcus Sorensen <mls@apple.com>
* Allow configkey to set 'cloud-name' cloud-init metadata
* Update engine/api/src/main/java/com/cloud/vm/VirtualMachineManager.java
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* Update server/src/main/java/com/cloud/network/NetworkModelImpl.java
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* Update server/src/main/java/com/cloud/network/router/CommandSetupHelper.java
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* Revert "Update server/src/main/java/com/cloud/network/router/CommandSetupHelper.java"
This reverts commit 8abc3e38c4.
* Revert "Update server/src/main/java/com/cloud/network/NetworkModelImpl.java"
This reverts commit 7f239be919.
* Rework/Fix review code suggestions
---------
Co-authored-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>
* UI: Fix user role login due to missing API access on custom hypervisor name
* Refactor to include the custom HW display name as part of the response of listCapabilities API
* Add since parameter
If the original value is `false`, and search build is configured without the condition. Now change the value to `true`, it will not get effective due to missing condition.
* Don't allow inadvertent deletion of hidden details via API
* Update VM details unit test ensuring system/hidden details not removed
* Update test/integration/component/test_update_vm.py
---------
Co-authored-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: dahn <daan.hoogland@gmail.com>
### Description
Design document: https://cwiki.apache.org/confluence/display/CLOUDSTACK/%5BDRAFT%5D+Minimal+changes+to+allow+new+dynamic+hypervisor+type%3A+Custom+Hypervisor
This PR introduces the minimal changes to add a new hypervisor type (internally named Custom in the codebase, and configurable display name), allowing to write an external hypervisor plugin as a Custom Hypervisor to CloudStack
The custom hypervisor name is set by the setting: 'hypervisor.custom.display.name'. The new hypervisor type does not affect the behaviour of any CloudStack operation, it simply introduces a new hypervisor type into the system.
CloudStack does not have any means to dynamically add new hypervisor types. The hypervisor types are internally preset by an enum defined within the CloudStack codebase and unless a new version supports a new hypervisor it is not possible to add a host of a hypervisor that is not in part of the enum. It is possible to implement minimal changes in CloudStack to support a new hypervisor plugin that may be developed privately
This PR is an initial work on allowing new dynamic hypervisor types (adds a new element to the HypervisorType enum, but allows variable display name for the hypervisor)
##### Proposed Future work:
Replace the HypervisorType from a fixed enum to an extensible registry mechanism, registered from the hypervisor plugin
#### Feature Specifications
- The new hypervisor type is internally named 'Custom' to the CloudStack services (management server and agent services, database records).
- A new global setting ‘hypervisor.custom.display.name’ allows administrators to set the display name of the hypervisor type. The display name will be shown in the CloudStack UI and API.
- In case the ‘hypervisor.list’ setting contains the display name of the new hypervisor type, the setting value is automatically updated after the ‘hypervisor.custom.display.name’ setting is updated.
- The new Custom hypervisor type supports:
- Direct downloads (the ability to download templates into primary storage from the hypervisor hosts without using secondary storage)
- Local storage (use hypervisor hosts local storage as primary storage)
- Template format: RAW format (the templates to be registered on the new hypervisor type must be in RAW format)
- The UI is also extended to display the new hypervisor type and the supported features listed above.
- The above are the minimal changes for CloudStack to support the new hypervisor type, which can be tested by integrating the plugin codebase with this feature.
#### Use cases
This PR allows the cloud administrators to test custom hypervisor plugins implementations in CloudStack and easily integrate it into CloudStack as a new hypervisor type ("Custom"), reducing the implementation to only the hypervisor supported specific storage/networking and the hypervisor resource to communicate with the management server.
- CloudStack admin should be able to create a zone for the new custom hypervisor and add clusters, hosts into the zone with normal operations
- CloudStack users should be able to execute normal VMs/volumes/network/storage operations on VMs/volumes running on the custom hypervisor hosts
* Replace Hashtable with LinkedHashMap in createIsoResponse
This change replaces the use of Hashtable with LinkedHashMap in the `createIsoResponse` method of `ViewResponseHelper`.
The reason for this modification is to maintain the insertion order of entries, which isn't the case with Hashtable.
This could lead to more predictable results and behaviors in calling methods.
* Replace Hashtable with LinkedHashMap in view response creation methods
Changed Hashtable to LinkedHashMap in various response creation methods within ViewResponseHelper class.
This modification ensures an ordered iteration which is beneficial for scenarios where the insertion order of responses needs to be maintained consistently.
---------
Co-authored-by: Sina Kashipazha <soreana@users.noreply.github.com>
Pearl Dsilva
Wei Zhou
Vishesh
Daan Hoogland
slavkap
Marcus Sorensen
Aakash Sinha
Nicolas Vazquez
Abhishek Kumar
sato03
Fabricio Duarte
John Bampton
Pierre Le Fevre
Stephan Krug
Harikrishna
Rohit Yadav
Oscar Sandoval
SadiJr
Bryan Lima
Gabriel Pordeus Santos
GaOrtiga
Sina Kashipazha
Charles Queiroz