Unable to delete shared network (specifyVlan=false and no services)

[sureshanaparti]

Unable to delete shared network (with specifyVlan=false and no services)

ISSUE TYPE

• Bug Report

COMPONENT NAME

Networks

CLOUDSTACK VERSION

4.19.1

CONFIGURATION

OS / ENVIRONMENT

Agnostic of OS

STEPS TO REPRODUCE

1. Create a VM, say testvm.
2. Create a network offering for Shared network with specifyVlan = false and no services ; enable the network offering.
3. Create a shared network using this offering and provide only IPv4 gateway and netmask (no IP range provided).
   Ex: create network acltype=domain name=test-shared-network displaytext=test-shared-network networkofferingid=3dc6968e-6503-4fa3-8a38-09da72d7a846 gateway=1.1.1.1 netmask=255.255.255.0 physicalnetworkid=7691b1b8-2438-4843-9802-cb7f458d7757 zoneid=5b53d47b-d56a-4e6d-927c-3b61a58edf9f
4. Stop the VM testvm and attach network created (addNicToVirtualMachine) in step3, to the VM.
5. Start the VM - this will fail.
6. Remove the network (removeNicFromVirtualMachine) in step3, from the VM. Now, start the VM.
7. Delete the network created in step 3 - It fails with below exception.

2025-01-24 05:00:13,653 ERROR [c.c.a.ApiAsyncJobDispatcher] (API-Job-Executor-37:ctx-c898771c job-126) (logid:65c35a14) Unexpected exception while executing org.apache.cloudstack.api.command.user.network.DeleteNetworkCmd
java.lang.NullPointerException
        at com.cloud.network.Networks$BroadcastDomainType.getSchemeValue(Networks.java:178)
        at com.cloud.network.Networks$BroadcastDomainType.getValue(Networks.java:232)
        at org.apache.cloudstack.engine.orchestration.NetworkOrchestrator.deleteVlansInNetwork(NetworkOrchestrator.java:3452)
        at org.apache.cloudstack.engine.orchestration.NetworkOrchestrator$13.doInTransaction(NetworkOrchestrator.java:3352)
        at org.apache.cloudstack.engine.orchestration.NetworkOrchestrator$13.doInTransaction(NetworkOrchestrator.java:3344)
        at com.cloud.utils.db.Transaction$2.doInTransaction(Transaction.java:50)
        at com.cloud.utils.db.Transaction.execute(Transaction.java:40)
        at com.cloud.utils.db.Transaction.execute(Transaction.java:47)
        at org.apache.cloudstack.engine.orchestration.NetworkOrchestrator.destroyNetwork(NetworkOrchestrator.java:3344)
        at com.cloud.network.NetworkServiceImpl.deleteNetwork(NetworkServiceImpl.java:2695)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
        at org.apache.cloudstack.network.contrail.management.EventUtils$EventInterceptor.invoke(EventUtils.java:107)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175)
        at com.cloud.event.ActionEventInterceptor.invoke(ActionEventInterceptor.java:52)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)
        at com.sun.proxy.$Proxy168.deleteNetwork(Unknown Source)
        at org.apache.cloudstack.api.command.user.network.DeleteNetworkCmd.execute(DeleteNetworkCmd.java:72)
        at com.cloud.api.ApiDispatcher.dispatch(ApiDispatcher.java:172)
        at com.cloud.api.ApiAsyncJobDispatcher.runJob(ApiAsyncJobDispatcher.java:112)
        at org.apache.cloudstack.framework.jobs.impl.AsyncJobManagerImpl$5.runInContext(AsyncJobManagerImpl.java:654)

8. Also, List VM (listVirtualMachines) with networkid (of network in Step 3) list the VM testvm, but doesn't show the nic

EXPECTED RESULTS

List VM with the network shouldn't show the VM when not attached to the network, and Network has to be deleted without any issues.

ACTUAL RESULTS

List VM with the network shows the VM when it is not attached to the network, and delete network fails with an NPE.

[Pearl1594]

does this: #10168 address the issue? basically, the PR prevents creation of shared networks without an ip range

[bernardodemarco]

does this: #10168 address the issue? basically, the PR prevents creation of shared networks without an ip range

@Pearl1594, yes, I think so. The NPE is thrown when the broadcast_uri is NULL. If, at least the startip of a shared network is specified, then the broadcast_uri won't be NULL. Therefore, I believe that adding this validation will be enough to solve this issue.

Regarding this bug List VM with the network shouldn't show the VM when not attached to the network, it was fixed in #10204.

[sureshanaparti]

Thanks @bernardodemarco, for fixing the listing issue.

@Pearl1594 the NPE here is due to the vlan / broadcast uri not specified. Even when IP range is validated, we should add condition to get the broadcast uri scheme when specifyvlan is true. #10168 does validation for IP range only, so still there is chance of NPE while deleting network.

[DaanHoogland]

@sureshanaparti , after we merge #10168, will we need more fixes to close this?

[DaanHoogland]

fixed by #10168 (@sureshanaparti @Pearl1594 , please correct me if i'm wrong)