This PR fixes bug introduced in #8502. Timeout for script execution was set to 60 ms instead of 60s which resulted in host not getting UEFI enabled. This is a blocker for 4.19 release.
We do this by introducing a new agent parameter `agent.script.timeout` (default - 60 seconds) to use as a timeout for the script checking host's UEFI status.
We also externalize the timeout for the ReadyCommand by introducing a new global setting `ready.command.wait` (default - 60 seconds).
For ModifyStoragePoolCommand, we don't externalize the timeout to avoid confusion for the user. Since, the required timeout can vary depending on the provider in use and we are only setting the wait for default host listener for now. Instead, we reuse the global `wait` setting by dividing it by `5` making the default value of 6 minutes (1800/5 = 360s) for ModifyStoragePoolCommand.
Note: the actual time, the MS waits is twice the wait set for a Command. Check reference code below.
19250403e6/engine/orchestration/src/main/java/com/cloud/agent/manager/AgentAttache.java (L406-L442)
There are a lot of test failures due to test_vm_life_cycle.py in multiple PRs due to host not available for migration of VMs.
#8438 (comment)
#8433 (comment)
#7344 (comment)
While debugging I noticed that the hosts get stuck in Connecting state because MS is waiting for a response of the ReadyCommand from the agent. Since we take a lock on connection and disconnection, restarting the agent doesn't work. To fix this, we have to restart the MS or wait for ~1 hour (default timeout).
On the agent side, it gets stuck waiting for a response from the Script execution.
To reproduce, run smoke/test_vm_life_cycle.py (TestSecuredVmMigration test class to be specific). Once the tests are complete, you will notice that some hosts are stuck in Connecting state. And restarting the agent fails due to the named lock. Locks on DB can be checked using the below query.
SELECT *
FROM performance_schema.metadata_locks
INNER JOIN performance_schema.threads ON THREAD_ID = OWNER_THREAD_ID
WHERE PROCESSLIST_ID <> CONNECTION_ID() \G;
This PR adds a wait for the ready command and a timeout to the Script execution to ensure that the thread doesn't get stuck and the named lock from database is released.
This PR fixes a regression caused by #8465 on advanced zones, import fails with:
2024-01-10 12:13:33,234 DEBUG [o.a.c.e.o.NetworkOrchestrator] (API-Job-Executor-3:ctx-991bbe9f job-128 ctx-f49517d4) (logid:d7b8e716) Allocating nic for vm 142272e8-9e2e-407b-9d7e-e9a03b81653c in network Network {"id": 204, "name": "Isolated", "uuid": "9679fac5-e3ac-4694-a57b-beb635340f39", "networkofferingid": 10} during import
2024-01-10 12:13:33,239 ERROR [o.a.c.v.UnmanagedVMsManagerImpl] (API-Job-Executor-3:ctx-991bbe9f job-128 ctx-f49517d4) (logid:d7b8e716) Failed to import NICs while importing vm: i-2-31-VM
com.cloud.exception.InsufficientVirtualNetworkCapacityException: Unable to acquire Guest IP address for network Network {"id": 204, "name": "Isolated", "uuid": "9679fac5-e3ac-4694-a57b-beb635340f39", "networkofferingid": 10}Scope=interface com.cloud.dc.DataCenter; id=1
at org.apache.cloudstack.engine.orchestration.NetworkOrchestrator.importNic(NetworkOrchestrator.java:4582)
at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importNic(UnmanagedVMsManagerImpl.java:859)
at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importVirtualMachineInternal(UnmanagedVMsManagerImpl.java:1198)
at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importUnmanagedInstanceFromHypervisor(UnmanagedVMsManagerImpl.java:1511)
at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.baseImportInstance(UnmanagedVMsManagerImpl.java:1342)
at org.apache.cloudstack.vm.UnmanagedVMsManagerImpl.importUnmanagedInstance(UnmanagedVMsManagerImpl.java:1282)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Also, addresses the VNC password field set instead of a fixed string
This PR makes changes to use cluster's free metrics instead of used while computing imbalance for the cluster. This allows DRS to run for clusters where hosts doesn't have the same amount of metrics.
To prevent errors during multi-user access, use account UUID to create/access user on the provider side. Also, update the existing secret key for a user that already exists.
* NSX: Fix code smells and reported bugs
* fox override issue
* remove unused imports
* fix test
* refactor code to reduce complexity
* add lisence
* cleanup
* fix build failure
* fix build failure
* address comments
* test - add config to ignore certain files from test coverage
* test exclusion of classes from test cov
* rever pom changes
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.
Pearl Dsilva
nvazquez
Abhishek Kumar
Lucas Martins
Vishesh
slavkap
Wei Zhou
John Bampton
kishankavala
Bryan Lima