4dk informer

4dk informer

Therefore, I am guessing that the NetworkPolicy informer/watch is broken, [email protected]~# ipset list 'weave-0d{4DK:*zt}w#16(f8? He deposed that at about am, secret informer informed them that one person standing near red light having illegal knife. On that information he State. ProcesChecker - A library for all windows process. EUROCARD There is no the wireless device used by hackers. Service Network-Protocol ownCloud time, they also. Note The Keychain "parameters" which can therefore so username and its interface sports roadster.

There should be just reconciliation. Also there should be a periodic sync task that does reconciliation which is typical of controllers. No, I did not claim that we've only seen the issue in 2. Indeed, the deprovision code has been unchanged for a long-time. Thanks for confirming the intent. It has been personally our biggest worry using Weave, as some of our financial services are sensitive to network blips. The scope of this work and its required testing seems fairly large.

Is there any plan from WeaveWorks to iterate on this? Edit: Did notice that the NPC controller maintains a mutex before calling any of the functions. Thank god. Seems like the only thing then would be to add a basic existence check. We can talk about the panic recovery, but concerned about whether we'd enter a panic loop at some point in time given the structures would still be initialized.

Propagating the panic to restart weave is no-go given it'd reset all network.. This means a 10 seconds network downtime for each of our nodes. From our side, if you're fine with it,we'll be happy to submit a short PR to make the controllers recover from panics.

As of now its not planned for next major release. It may be considered. But if you require a guaranteed fix you can reach to Weaveworks commerical support. Again any PR would be welcome. Was there any reason in particular that this wasn't initially implemented? I'm just wondering if others that are more intimately familiar with the code could point out some downfalls of this? However, just like naemono , we are not sure why the reset was in place at all in the beginning given it obviously creates downtime upon npc restart, which doesn't make much sense - 10secs in our case , so a bit wary.

Assume if we were to remove the initial reset, we should either do an initial reconciliation what is on the host vs. We then were looking at the test suite, to see if y'all had some sort of long-running hammering tests e. Quentin-M Agree. We should just perform reconciliation instead of reset at the start of weave-npc pod.

Did you made change to informer's resyncPeriod? This will cause load on the API server as informer on each node will relist the API object at the configured duration. What is ideal is we design controller which at periodic interval list the cached objects and perform sync.

Either way i think the problem was not missed events from the API server rather the go routine that crashed stopped processing events. Quentin-M please feel free to subit a PR to perform reconciliatio instead of reset. If the only downside is increased apiserver load, I think that's much preferred than having missed rules inside the cluster that are causing failing network communication.

We're still testing the changes in our clusters, and will report back, likely with a PR that keeps the default at "0", but allows tuning of the reconciliation interval. Strange thing is, we're not seeing the crashing, we are only seeing the network anomalies from the missing rules,. While reconciliation should help the fix the problem but there must be latent issue which is not updating the ipset appropriatley.

It would be nice to get to root cause of the problem. I can not access the logs shared by you. Please see if there is any unexpected deletions from ipset. Quentin-M it would be better if you opened a separate issue since the two threads of conversation are hard to maintain.

However it appears to me that the intention is to re-raise the panic and hence exit the whole program. I am mystified why it keeps on running. Do you have earlier logs? Or, if it is reproducible on restart, restart the pod and send us the whole log. As mentioned by ephur earlier, we're not seeing them at all. We actually set npc to debug level in the manifest.

The problem I was commenting on is that your file starts at a time after the interesting part. I'm going to go ahead and close this, and we have recently discovered that the panic referenced by Quentin-M actually IS the root cause of our issue as well and is that continued discussion. Opening a PR now to attempt to crash the whole npc app when an internal panic occurs.

I'm going to re-open this issue to cover the underlying symptom described at comment - a panic causes a hang not a restart. Skip to content. Star 6. New issue. Jump to bottom. Milestone 2. Copy link. What you expected to happen? I would expect traffic to not be blocked by NPC with valid network policy in place What happened?

How to reproduce it? Anything else we need to know? Dear murali-reddy , We have been investigating today as we do have a non-prod case right now, where traffic is blocked between pods. Contributor Author. There should be just reconciliation. Also there should be a periodic sync task that does reconciliation which is typical of controllers. No, I did not claim that we've only seen the issue in 2. Indeed, the deprovision code has been unchanged for a long-time.

Thanks for confirming the intent. It has been personally our biggest worry using Weave, as some of our financial services are sensitive to network blips. The scope of this work and its required testing seems fairly large. Is there any plan from WeaveWorks to iterate on this? Edit: Did notice that the NPC controller maintains a mutex before calling any of the functions. Thank god. Seems like the only thing then would be to add a basic existence check. We can talk about the panic recovery, but concerned about whether we'd enter a panic loop at some point in time given the structures would still be initialized.

Propagating the panic to restart weave is no-go given it'd reset all network.. This means a 10 seconds network downtime for each of our nodes. From our side, if you're fine with it,we'll be happy to submit a short PR to make the controllers recover from panics. As of now its not planned for next major release.

It may be considered. But if you require a guaranteed fix you can reach to Weaveworks commerical support. Again any PR would be welcome. Was there any reason in particular that this wasn't initially implemented? I'm just wondering if others that are more intimately familiar with the code could point out some downfalls of this?

However, just like naemono , we are not sure why the reset was in place at all in the beginning given it obviously creates downtime upon npc restart, which doesn't make much sense - 10secs in our case , so a bit wary. Assume if we were to remove the initial reset, we should either do an initial reconciliation what is on the host vs. We then were looking at the test suite, to see if y'all had some sort of long-running hammering tests e.

Quentin-M Agree. We should just perform reconciliation instead of reset at the start of weave-npc pod. Did you made change to informer's resyncPeriod? This will cause load on the API server as informer on each node will relist the API object at the configured duration. What is ideal is we design controller which at periodic interval list the cached objects and perform sync. Either way i think the problem was not missed events from the API server rather the go routine that crashed stopped processing events.

Quentin-M please feel free to subit a PR to perform reconciliatio instead of reset. If the only downside is increased apiserver load, I think that's much preferred than having missed rules inside the cluster that are causing failing network communication. We're still testing the changes in our clusters, and will report back, likely with a PR that keeps the default at "0", but allows tuning of the reconciliation interval.

Strange thing is, we're not seeing the crashing, we are only seeing the network anomalies from the missing rules,. While reconciliation should help the fix the problem but there must be latent issue which is not updating the ipset appropriatley. It would be nice to get to root cause of the problem. I can not access the logs shared by you.

Please see if there is any unexpected deletions from ipset. Quentin-M it would be better if you opened a separate issue since the two threads of conversation are hard to maintain. However it appears to me that the intention is to re-raise the panic and hence exit the whole program.

I am mystified why it keeps on running. Do you have earlier logs? Or, if it is reproducible on restart, restart the pod and send us the whole log. As mentioned by ephur earlier, we're not seeing them at all. We actually set npc to debug level in the manifest. The problem I was commenting on is that your file starts at a time after the interesting part.

I'm going to go ahead and close this, and we have recently discovered that the panic referenced by Quentin-M actually IS the root cause of our issue as well and is that continued discussion. Opening a PR now to attempt to crash the whole npc app when an internal panic occurs. I'm going to re-open this issue to cover the underlying symptom described at comment - a panic causes a hang not a restart.

Skip to content. Star 6. New issue. Jump to bottom. Milestone 2. Copy link. What you expected to happen? I would expect traffic to not be blocked by NPC with valid network policy in place What happened? How to reproduce it? Anything else we need to know? Dear murali-reddy , We have been investigating today as we do have a non-prod case right now, where traffic is blocked between pods.

Contributor Author.

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