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Posted to commits@cloudstack.apache.org by "clevervinicius (via GitHub)" <gi...@apache.org> on 2023/05/10 13:11:23 UTC
[GitHub] [cloudstack] clevervinicius opened a new issue, #7514: Internal communication failure - Redundant VR 4.16
clevervinicius opened a new issue, #7514:
URL: https://github.com/apache/cloudstack/issues/7514
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##### ISSUE TYPE
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* Bug Report
##### COMPONENT NAME
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Categorize the issue, e.g. API, VR, VPN, UI, etc.
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VR, VPC, Redundant
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##### CLOUDSTACK VERSION
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New line separated list of affected versions, commit ID for issues on main branch.
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4.16
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##### CONFIGURATION
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Information about the configuration if relevant, e.g. basic network, advanced networking, etc. N/A otherwise
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VPC with Redundant VR
##### OS / ENVIRONMENT
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Information about the environment if relevant, N/A otherwise
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KVM Hosts
##### SUMMARY
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Our environment has a VM that loses TCP communication with its own internal IP. This issue has been noticed while we have redundant VR on VPC. We also noticed the message: Failed to start Conntrack Deamon, this message is in other issues on github, but not affecting it in the same way.
When restarting the network with "Cleanup", the problem is temporarily solved, but it occurs again in a few minutes. We deactivate the redundancy and it doesn't repeat itself.
##### STEPS TO REPRODUCE
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For bugs, show exactly how to reproduce the problem, using a minimal test-case. Use Screenshots if accurate.
- Create a VPC
- Set Redundacy VR
- Connect a VM on this VPC
- Check TCP connection on internal IP (eg: port 80 on 10.1.0.20)
For new features, show how the feature would be used.
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##### EXPECTED RESULTS
<!-- What did you expect to happen when running the steps above? -->
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Free communication between VM internal ips
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##### ACTUAL RESULTS
<!-- What actually happened? -->
closed connection
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Re: [I] Internal communication failure - Redundant VR 4.16 [cloudstack]
Posted by "JoaoJandre (via GitHub)" <gi...@apache.org>.
JoaoJandre commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1883698506
As @weizhouapache said, this seems like a environment issue, therefore, I'll be removing it from the 4.18.2.0 milestone.
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Re: [I] Internal communication failure - Redundant VR 4.16 [cloudstack]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-5383707711
This issue is stale because it has been open for 120 days with no activity. It may be removed by administrators of this project at any time. Remove the stale label or comment to request for removal of it to prevent this.
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[GitHub] [cloudstack] weizhouapache commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "weizhouapache (via GitHub)" <gi...@apache.org>.
weizhouapache commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1676775975
@clevervinicius
I checked the iptables rules in primary and backup VRs, they look same.
from my experience, this seems to be a issue caused by network misconfiguration.
some vrrp packets (between redundant VRs) might be dropped in the network
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Re: [I] Internal communication failure - Redundant VR 4.16 [cloudstack]
Posted by "DaanHoogland (via GitHub)" <gi...@apache.org>.
DaanHoogland commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-5410458063
as per https://github.com/apache/cloudstack/issues/7514#issuecomment-1676775975 I am closing this. please open a new issue or reopen this one if you feel there is still an issue.
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[GitHub] [cloudstack] boring-cyborg[bot] commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "boring-cyborg[bot] (via GitHub)" <gi...@apache.org>.
boring-cyborg[bot] commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1542190493
Thanks for opening your first issue here! Be sure to follow the issue template!
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[GitHub] [cloudstack] weizhouapache commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "weizhouapache (via GitHub)" <gi...@apache.org>.
weizhouapache commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1542345281
@clevervinicius
what about other vms in the same VPC ?
what's the redundant state of the VPC VRs ?
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[GitHub] [cloudstack] weizhouapache commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "weizhouapache (via GitHub)" <gi...@apache.org>.
weizhouapache commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1542551197
@clevervinicius
thanks for the details.
can you share the result of `iptables-save` commad in the VPC VRs ?
(1) VPC with redundant VRs
(1) VPC with single VR
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Re: [I] Internal communication failure - Redundant VR 4.16 [cloudstack]
Posted by "DaanHoogland (via GitHub)" <gi...@apache.org>.
DaanHoogland closed issue #7514: Internal communication failure - Redundant VR 4.16
URL: https://github.com/apache/cloudstack/issues/7514
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[GitHub] [cloudstack] clevervinicius commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "clevervinicius (via GitHub)" <gi...@apache.org>.
clevervinicius commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1544539480
[router redundant.txt](https://github.com/apache/cloudstack/files/11455610/router.redundant.txt)
[router single.txt](https://github.com/apache/cloudstack/files/11455611/router.single.txt)
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[GitHub] [cloudstack] clevervinicius commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "clevervinicius (via GitHub)" <gi...@apache.org>.
clevervinicius commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1542433197
#what about other vms in the same VPC ?
The other VM in the same VPC keeps connecting.
what's the redundant state of the VPC VRs ?
Primary - Running - Backup - Running
My issue scenario: (example ips)
Redundant Router (10.1.0.1)
VM1 (10.1.0.20) internal (33.33.33.33) public - Static NAT
VM2 (database (10.1.0.21)
On normal state:
The VM1 connect to internal API on VM1 per public IP - VM1 IP Internal > Router > VM1 IP public > Router > VM1 IP internal > Connect OK
On problem state:
The VM1 try connect to internal API on VM1 per public IP - VM1 IP Internal > Router > VM1 IP public X(?) > Router X(?) VM1 IP internal > Not connected
There is an application inside the VM itself that needs to connect with itself, but when the router has a problem, it interrupts the communication. External communication is still normal, I can connect directly to this application from a connection outside the VPC.
Another explanation approach:
An API inside VM1 connects to VM1 itself, but through public IP set in static NAT, and goes back to VM1 itself, in some moments this connection stops happening and that's exactly where my problem is.
Monitoring the VM1 lan IP or even VM2 lan IP (database) there are no connection problems. The problem is only when my client's API accesses the VM itself through the public ip.
The client accesses the public IP because he uses the domain of his website in his application to consume his own API.
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[GitHub] [cloudstack] weizhouapache commented on issue #7514: Internal communication failure - Redundant VR 4.16
Posted by "weizhouapache (via GitHub)" <gi...@apache.org>.
weizhouapache commented on issue #7514:
URL: https://github.com/apache/cloudstack/issues/7514#issuecomment-1597127698
added to 4.18.1.0 milestone
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