- add timeout for CheckNetworkCommand
- use SychnonousQueue for ssl/tls handshake worker
- revert to TLSv1.2
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
- mTLS implementation for cluster service communication
- Listen only on the specified cluster node IP address instead of all interfaces
- Validate incoming cluster service requests are from peer management servers based on the server's certificate dns name which can be through global config - ca.framework.cert.management.custom.san
- Hardening of KVM command wrapper script execution
- Improve API server integration port check
- cloudstack-management.default: don't have JMX configuration if not needed. JMX is used for instrumentation; users who need to use it should enable it explicitly
Co-authored-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
Co-authored-by: Wei Zhou <weizhou@apache.org>
Co-authored-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
(cherry picked from commit 4f5561937cbfbdc722caf65b633d2dc57b44d31f)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
* Mitigation for non-scalable Powerflex/ScaleIO clients
- Added ScaleIOSDCManager to manage SDC connections, checks clients limit, prepare and unprepare SDC on the hosts.
- Added commands for prepare and unprepare storage clients to prepare/start and stop SDC service respectively on the hosts.
- Introduced config 'storage.pool.connected.clients.limit' at storage level for client limits, currently support for Powerflex only.
* tests issue fixed
* refactor / improvements
* lock with powerflex systemid while checking connections limit
* updated powerflex systemid lock to hold till sdc preparation
* Added custom stats support for storage pool, through listStoragePools API
* code improvements, and unit tests
* Update config 'storage.pool.connected.clients.limit' to dynamic, and some improvements
* Stop SDC on host after migration if no volumes mapped to host
* Wait for SDC to connect after scini service start, and some log improvements
* Do not throw exception (log it) when SDC is not connected while revoking access for the powerflex volume
* some log improvements
* kvm: Add support for cgroupv2 (#8252)
1. Problem description
In Apache CloudStack (ACS), when a VM is deployed in a host with the KVM hypervisor, an XML file is created in the assigned host, which has a property shares that defines the weight of the VM to access the host CPU. The value of this property has no unit, and it is a relative measure to calculate how much CPU a given VM will have in the host. However, this value has a limit, which depends on the version of cgroup utilized by the host's kernel. The problem lies at the range value of shares that varies between both versions: [2, 264144] for cgroups version 1; and [1, 10000] for cgroups version 2. Currently, ACS calculates the value of shares using Equation 1, presented below, where CPU is the number of cores and speed is the CPU frequency; both specified in the VM's compute offering. Therefore, if a compute offering has, for example, 6 cores at 2 GHz, the shares value will be 12000 and an exception will be thrown by libvirt if the host utilizes cgroup v2. The second version is becoming the default one in current Linux distributions; thus, it is necessary to address this limitation.
Equation 1
shares = CPU * speed
Fixes: #6744
2. Proposed changes
To address the problem described, we propose to apply a scale conversion considering the max shares of the host. Using the same formula currently utilized by ACS, it is possible to calculate the maximum shares of a VM for a given host. In other words, using the number of cores and the nominal speed of the host's CPU as the upper limit of shares allowed to a VM. Then, this value will be scaled to the allowed interval of [1, 10000] of cgroup v2 by using a linear scale conversion.
The VM shares would be calculated as Equation 2, presented below, where VM requested shares is the requested shares value calculated using Equation 1, cgroup upper limit is fixed with a value of 10000 (cgroups v2 upper limit), and host max shares is the maximum shares value of the host, calculated using Equation 1. Using Equation 2, the only case where a VM passes the cgroup v2 limit is when the user requests more resources than the host has, which is not possible with the current implementation of ACS.
Equation 2
shares = (VM requested shares * cgroup upper limit)/host max shares
To implement the proposal, the following APIs will be updated: deployVirtualMachine, migrateVirtualMachine and scaleVirtualMachine. When a VM is being deployed, a new verification will be added to find a suitable host. The max shares of each host will be calculated, and the VM calculated shares will be verified if it does not surpass the host's value. Likewise, the migration of VMs will have a similar new verification. Lastly, the scale of VMs will also have the same verification for the VM's host.
To determine the max shares of a given host, we will use the same equation currently used in ACS for calculating the shares of VMs, presented in Section 1. When Equation 1 is used to determine the maximum shares of a host, CPU is the number of cores of the host, and speed is the nominal CPU speed, i.e., considering the CPU's base frequency.
It is important to note that these changes are only for hosts with the KVM hypervisor using cgroup v2 for now.
* Update overcommit ratio during live VM migration
* minor refactoring
---------
Co-authored-by: Bryan Lima <42067040+BryanMLima@users.noreply.github.com>
* ScaleIO volume live migration - use usable bytes from source disk to format the destination disk
* Don't abort block copy job when cur,end = 0
* code improvements
* Merge two HostTagVO and HostTagDaoImpl
* Apple FR76: dynamic host tags
* Revert "Apple FR76: dynamic host tags"
This reverts commit 01b93a873f167018c4fafd0744c0de07ae4de4ed.
* Apple FR76: Implicit host tags
* Apple FR76: address Abhishek's comments
* Apple FR76: move updateImplicitTags
* Apple FR76: add since to other two responses
* Update 8929: add unit test in LibvirtComputingResourceTest
* Update variable names
* Update FR76: add explicithosttags in response
* Update FR76 UI: Update explicit host tags
* Update 8929: remove host tags and change labels on UI
* Update: ui polish for host tags
* fix since in responses
* Update 8929: fix UI error if no host tags
Add a global setting to control whether redirection is allowed while
downloading templates and volumes
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
* Introduced a new API "checkVolumeAndRepair" that allows users or admins to check and repair if any leaks observed.
Currently this is supported only for KVM
* some fixes
* Added unit tests
* addressed review comments
* add repair volume while granting access
* Changed repair parameter to accept both leaks/all values
* Introduced new global setting volume.check.and.repair.before.use to do volume check and repair before VM start or volume attach operations
* Added volume check and repair changes only during VM start and volume attach operations
* Refactored the names to look similar across the code
* Some code fixes
* remove unused code
* Renamed repair values
* Addressed review comments
* code refactored
* used volume name in logs
* Changed the API to Async and the setting scope to storage pool
* Fixed exit value handling with check volume command
* Fixed storage scope to the setting
* Fixed volume format issues
* Refactored the log messages
* Fix formatting
* StoragePoolType as a class
* Fix agent side StoragePoolType enum to class
* Handle StoragePoolType for StoragePoolJoinVO
* Since StoragePoolType is a class, it cannot be converted by @Enumerated annotation.
Implemented conveter class and logic to utilize @Convert annotation.
* Fix UserVMJoinVO for StoragePoolType
* fixed missing imports
* Since StoragePoolType is a class, it cannot be converted by @Enumerated annotation.
Implemented conveter class and logic to utilize @Convert annotation.
* Fixed equals for the enum.
* removed not needed try/catch for prepareAttribute
* Added license to the file.
* Implemented "supportsPhysicalDiskCopy" for storage adaptor. (#352)
Co-authored-by: mprokopchuk <mprokopchuk@apple.com>
* Add javadoc to StoragePoolType class
* Add unit test for StoragePoolType comparisons
* StoragePoolType "==" and ".equals()" fix.
* Fix for abstract storage adaptor set up issue
* review comments
---------
Co-authored-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: mprokopchuk <mprokopchuk@apple.com>
Co-authored-by: mprokopchuk <mprokopchuk@gmail.com>
Co-authored-by: Suresh Kumar Anaparti <suresh.anaparti@shapeblue.com>
* Trigger out of band VM state update via libvirt event when VM stops
* Add License headers, refactor nested try
---------
Co-authored-by: Marcus Sorensen <mls@apple.com>
(cherry picked from commit 3694667f5074018d6df58fac5e6a2803204f295b)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
* Auto Enable Disable KVM hosts
* Improve health check result
* Fix corner cases
* Script path refactor
* Fix sonar cloud reports
* Fix last code smells
* Add marvin tests
* Fix new line on agent.properties to prevent host add failures
* Send alert on auto-enable-disable and add annotations when the setting is enabled
* Address reviews
* Add a reason for enabling or disabling a host when the automatic feature is enabled
* Fix comment on the marvin test description
* Fix for disabling the feature if the admin has manually updated the host resource state before any health check result
(cherry picked from commit be66eb2a35bd6a5aae74f97a9140a9ec01f2a838)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Currently, ACS can continue to show an imported instance/VM as an unmanaged instance if the name and internalCSName (custom attribute, cloud.vm.internal.name) is different for the instance/VM on vCenter. This PR while filtering managed instances from the instance list received from ESXi host also checks if the internal name for the instance is not in the managed instance names list.
Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
* 4.17:
marvin: newer python setuptools doesn't like -SNAPSHOT in marvin version (#7120)
VR: fix warning Expected X answers while executing SetXXXCommand but Y (#7050)
This PR introduces a feature designed to allow CloudStack to manage a generic volume encryption setting. The encryption is handled transparently to the guest OS, and is intended to handle VM guest data encryption at rest and possibly over the wire, though the actual encryption implementation is up to the primary storage driver.
In some cases cloud customers may still prefer to maintain their own guest-level volume encryption, if they don't trust the cloud provider. However, for private cloud cases this greatly simplifies the guest OS experience in terms of running volume encryption for guests without the user having to manage keys, deal with key servers and guest booting being dependent on network connectivity to them (i.e. Tang), etc, especially in cases where users are attaching/detaching data disks and moving them between VMs occasionally.
The feature can be thought of as having two parts - the API/control plane (which includes scheduling aspects), and the storage driver implementation.
This initial PR adds the encryption setting to disk offerings and service offerings (for root volume), and implements encryption support for KVM SharedMountPoint, NFS, Local, and ScaleIO storage pools.
NOTE: While not required, operations can be significantly sped up by ensuring that hosts have the `rng-tools` package and service installed and running on the management server and hypervisors. For EL hosts the service is `rngd` and for Debian it is `rng-tools`. In particular, the use of SecureRandom for generating volume passphrases can be slow if there isn't a good source of entropy. This could affect testing and build environments, and otherwise would only affect users who actually use the encryption feature. If you find tests or volume creates blocking on encryption, check this first.
### Management Server
##### API
* createDiskOffering now has an 'encrypt' Boolean
* createServiceOffering now has an 'encryptroot' Boolean. The 'root' suffix is added here in case there is ever any other need to encrypt something related to the guest configuration, like the RAM of a VM. This has been refactored to deal with the new separation of service offering from disk offering internally.
* listDiskOfferings shows encryption support on each offering, and has an encrypt boolean to choose to list only offerings that do or do not support encryption
* listServiceOfferings shows encryption support on each offering, and has an encrypt boolean to choose to list only offerings that do or do not support encryption
* listHosts now shows encryption support of each hypervisor host via `encryptionsupported`
* Volumes themselves don't show encryption on/off, rather the offering should be referenced. This follows the same pattern as other disk offering based settings such as the IOPS of the volume.
##### Volume functions
A decent effort has been made to ensure that the most common volume functions have either been cleanly supported or blocked. However, for the first release it is advised to mark this feature as *experimental*, as the code base is complex and there are certainly edge cases to be found.
Many of these features could eventually be supported over time, such as creating templates from encrypted volumes, but the effort and size of the change is already overwhelming.
Supported functions:
* Data Volume create
* VM root volume create
* VM root volume reinstall
* Offline volume snapshot/restore
* Migration of VM with storage (e.g. local storage VM migration)
* Resize volume
* Detach/attach volume
Blocked functions:
* Online volume snapshot
* VM snapshot w/memory
* Scheduled snapshots (would fail when VM is running)
* Disk offering migration to offerings that don't have matching encryption
* Creating template from encrypted volume
* Creating volume from encrypted volume
* Volume extraction (would we decrypt it first, or expose the key? Probably the former).
##### Primary Storage Support
For storage developers, adding encryption support involves:
1. Updating the `StoragePoolType` for your primary storage to advertise encryption support. This is used during allocation of storage to match storage types that support encryption to storage that supports it.
2. Implementing encryption feature when your `PrimaryDataStoreDriver` is called to perform volume lifecycle functions on volumes that are requesting encryption. You are free to do what your storage supports - this could be as simple as calling a storage API with the right flag when creating a volume. Or (as is the case with the KVM storage types), as complex as managing volume details directly at the hypervisor host. The data objects passed to the storage driver will contain volume passphrases, if encryption is requested.
##### Scheduling
For the KVM implementations specified above, we are dependent on the KVM hosts having support for volume encryption tools. As such, the hosts `StartupRoutingCommand` has been modified to advertise whether the host supports encryption. This is done via a probe during agent startup to look for functioning `cryptsetup` and support in `qemu-img`. This is also visible via the listHosts API and the host details in the UI. This was patterned after other features that require hypervisor support such as UEFI.
The `EndPointSelector` interface and `DefaultEndpointSelector` have had new methods added, which allow the caller to ask for endpoints that support encryption. This can be used by storage drivers to find the proper hosts to send storage commands that involve encryption. Not all volume activities will require a host to support encryption (for example a snapshot backup is a simple file copy), and this is the reason why the interface has been modified to allow for the storage driver to decide, rather than just passing the data objects to the EndpointSelector and letting the implementation decide.
VM scheduling has also been modified. When a VM start is requested, if any volume that requires encryption is attached, it will filter out hosts that don't support encryption.
##### DB Changes
A volume whose disk offering enables encryption will get a passphrase generated for it before its first use. This is stored in the new 'passphrase' table, and is encrypted using the CloudStack installation's standard configured DB encryption. A field has been added to the volumes table, referencing this passphrase, and a foreign key added to ensure passphrases that are referenced can't be removed from the database. The volumes table now also contains an encryption format field, which is set by the implementer of the encryption and used as it sees fit.
#### KVM Agent
For the KVM storage pool types supported, the encryption has been implemented at Qemu itself, using the built-in LUKS storage support. This means that the storage remains encrypted all the way to the VM process, and decrypted before the block device is visible to the guest. This may not be necessary in order to implement encryption for /your/ storage pool type, maybe you have a kernel driver that decrypts before the block device on the system, or something like that. However, it seemed like the simplest, common place to terminate the encryption, and provides the lowest surface area for decrypted guest data.
For qcow2 based storage, `qemu-img` is used to set up a qcow2 file with LUKS encryption. For block based (currently just ScaleIO storage), the `cryptsetup` utility is used to format the block device as LUKS for data disks, but `qemu-img` and its LUKS support is used for template copy.
Any volume that requires encryption will contain a passphrase ID as a byte array when handed down to the KVM agent. Care has been taken to ensure this doesn't get logged, and it is cleared after use in attempt to avoid exposing it before garbage collection occurs. On the agent side, this passphrase is used in two ways:
1. In cases where the volume experiences some libvirt interaction it is loaded into libvirt as an ephemeral, private secret and then referenced by secret UUID in any libvirt XML. This applies to things like VM startup, migration preparation, etc.
2. In cases where `qemu-img` needs to use this passphrase for volume operations, it is written to a `KeyFile` on the cloudstack agent's configured tmpfs and passed along. The `KeyFile` is a `Closeable` and when it is closed, it is deleted. This allows us to try-with-resources any volume operations and get the KeyFile removed regardless.
In order to support the advanced syntax required to handle encryption and passphrases with `qemu-img`, the `QemuImg` utility has been modified to support the new `--object` and `--image-opts` flags. These are modeled as `QemuObject` and `QemuImageOptions`. These `qemu-img` flags have been designed to supersede some of the existing, older flags being used today (such as choosing file formats and paths), and an effort could be made to switch over to these wholesale. However, for now we have instead opted to keep existing functions and do some wrapping to ensure backward compatibility, so callers of `QemuImg` can choose to use either way.
It should be noted that there are also a few different Enums that represent the encryption format for various purposes. While these are analogous in principle, they represent different things and should not be confused. For example, the supported encryption format strings for the `cryptsetup` utility has `LuksType.LUKS` while `QemuImg` has a `QemuImg.PhysicalDiskFormat.LUKS`.
Some additional effort could potentially be made to support advanced encryption configurations, such as choosing between LUKS1 and LUKS2 or changing cipher details. These may require changes all the way up through the control plane. However, in practice Libvirt and Qemu currently only support LUKS1 today. Additionally, the cipher details aren't required in order to use an encrypted volume, as they're stored in the LUKS header on the volume there is no need to store these elsewhere. As such, we need only set the one encryption format upon volume creation, which is persisted in the volumes table and then available later as needed. In the future when LUKS2 is standard and fully supported, we could move to it as the default and old volumes will still reference LUKS1 and have the headers on-disk to ensure they remain usable. We could also possibly support an automatic upgrade of the headers down the road, or a volume migration mechanism.
Every version of cryptsetup and qemu-img tested on variants of EL7 and Ubuntu that support encryption use the XTS-AES 256 cipher, which is the leading industry standard and widely used cipher today (e.g. BitLocker and FileVault).
Signed-off-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: Marcus Sorensen <mls@apple.com>
