Comments (6)
In theory we have the ability to do this (or plan to) since upgrades will probably involve surging. I hadn't expected demand for this long term though. Are there other examples of HA daemonsets?
from ztunnel.
In theory we have the ability to do this (or plan to) since upgrades will probably involve surging. I hadn't expected demand for this long term though. Are there other examples of HA daemonsets?
I have two options in my mind:
- the hot standby mode like the telco routers, two instance share the same IP and mac address.
- two active instances running at the same time, dynamically load balancing the traffic to two instances.
from ztunnel.
hello @howardjohn have any update about ztunnel HA ? such as hot restart. thanks.
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This is not considered ATM, because ztunnel is now very simplified and only process L4, we are confident it can not crash.
In the long run, we may need to consider upgrade. During this procedure, we should guarantee at least one ztunnel is serving
from ztunnel.
This is not considered ATM, because ztunnel is now very simplified and only process L4, we are confident it can not crash.
In the long run, we may need to consider upgrade. During this procedure, we should guarantee at least one ztunnel is serving
Thank you for your reply. In the upgrade scenario, how can the existing L4 connections on the old ztunnel exit gracefully?
from ztunnel.
It doesnot, and i have read somewhere that in mosn you implemented connection unaffected during upgrade. Not sure that mechanism can be applied here?
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Related Issues (20)
- Boring build broken for non-FIPS HOT 5
- Random connection resets when accessing a captured workload through a service type LoadBalancer HOT 7
- Dynamically setting network isn't supported HOT 10
- service endpoints don't clean up properly on updates
- HBONE Specification? HOT 7
- XDS Store locking HOT 1
- Reduce memory footprint HOT 3
- When can ztunnel become a production-ready project? HOT 4
- ISTIO_METAJSON labels aren't sent.
- [release-1.19] fix : make ambient work with intermidiary certs HOT 2
- When ztunnel tries to respond with `401 Unauthorized`, it terminates connection HOT 3
- Exponential backoff on CA failures HOT 9
- cannot create new pod in an ambient labeled namespace in ebpf mode HOT 1
- floating forget_certificate function HOT 3
- ztunnel build fails because of "Unable to update https://github.com/howardjohn/boring/?branch=hyper-boring/adopt-hyper-1.0.0#5185311a" HOT 9
- [release-1.20] bump dependency HOT 1
- Ztunnel pod is failed to resolve domain of istiod service. HOT 4
- Support custom SECRET_TTL and SECRET_GRACE_PERIOD_RATIO in ztunnel HOT 9
- tag 1.19.4 failed to compile HOT 1
- ztunnel stuggles to reconnect to istiod HOT 6
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