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Posted to notifications@apisix.apache.org by GitBox <gi...@apache.org> on 2022/03/03 05:55:17 UTC
[GitHub] [apisix-dashboard] yangvipguang opened a new issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
yangvipguang opened a new issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360
### Issue description
dashboard版本：2.10.1
ETCD版本：3.5
目前我测试了一下，如果我要备份etcd，然后删除掉个别配置（比如upsteam等），如果我要恢复之前备份的etcd数据，这个时候dashboard 不能实时更新显示恢复之前的数据，需要重启一下dashboard的服务才可以，不知道这算bug还是就预期内的。
### Expected behavior
目前我测试了一下，如果我要备份etcd，然后删除掉个别配置（比如upsteam等），如果我要恢复之前备份的etcd数据，这个时候dashboard 不能实时更新显示恢复之前的数据，需要重启一下dashboard的服务才可以，不知道这算bug还是就预期内的。
### How to Reproduce
1、备份etcd数据
2、备份后修改一些数据（比如upstream等）
3、恢复etcd数据
4、刷新dashboard页面
### Screenshots
_No response_
### Environment
- apisix version (cmd: `apisix version`):
- OS (cmd: `uname -a`):
- OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`):
- etcd version, if have (cmd: run `etcd --version`):
- apisix-dashboard version, if have:
- Browser version, if have:
### Additional context
_No response_
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[GitHub] [apisix-dashboard] zaunist commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
zaunist commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1058750244
Hi, @yangvipguang. We need to discuss how to solve this problem, anyone is welcome to make suggestions!
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[GitHub] [apisix-dashboard] Baoyuantop commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
Baoyuantop commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1058744181
This seems to be as expected, there is a caching layer between Dashboard and etcd.
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[GitHub] [apisix-dashboard] bzp2010 edited a comment on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
bzp2010 edited a comment on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1062723910
This seems to be automatic in the etcd client, which will handle the reconnection logic automatically. We have no way to add a callback to know that this happened. If this is an oversight on my part, please point it out. 🤔 @jwrookie
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[GitHub] [apisix-dashboard] bzp2010 commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
bzp2010 commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1060118640
What kind of backup/restore means do you use? I don't know much about etcd and am not sure that data changes in any case would trigger an Watch push.
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[GitHub] [apisix-dashboard] jwrookie commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
jwrookie commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1058824059
> This seems to be as expected, there is a caching layer between Dashboard and etcd.
you are right, we have a layer of cache
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[GitHub] [apisix-dashboard] jwrookie commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
jwrookie commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1062741480
you are right, but we can set dialOption to control the behavior of reconnection
ref: https://pkg.go.dev/go.etcd.io/etcd/client/v3#Config, https://pkg.go.dev/google.golang.org/grpc@v1.44.0/backoff
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[GitHub] [apisix-dashboard] jwrookie commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
jwrookie commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1060272167
According to etcd doc, `Disaster recovery` requires a restart of etcd, which means that all previous client links will be invalidated, and the old data you see is just the program's cache
As far as I know, `grpc-go` will manage failed layer 4 connections, so when `Disaster recovery` occurs, we reload the local cache and the problem will solved
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[GitHub] [apisix-dashboard] bzp2010 commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
bzp2010 commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1062723910
This seems to be automatic in the etcd client, which will handle the reconnection logic automatically. 🤔
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[GitHub] [apisix-dashboard] jwrookie commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
jwrookie commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1057938509
looks not a dashboard bug, the data is fetched from etcd in real time.
If you want, we can communicate by voice
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[GitHub] [apisix-dashboard] yangvipguang commented on issue #2360: Etcd 备份恢复后dashboard 服务无法实时更新
Posted by GitBox <gi...@apache.org>.
yangvipguang commented on issue #2360:
URL: https://github.com/apache/apisix-dashboard/issues/2360#issuecomment-1058768217
@zaunist ok， I'm going to try a few times to see if I can reproduce this problem every time
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