[dns] Add support for static DNS configuration. #14549
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This is the re-creation of #14239, which was closed by mistake |
ganglyu
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Apr 12, 2023
ganglyu
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Apr 15, 2023
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| #!/bin/bash | |||
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| for container in $(docker ps -a --format=" {{ .ID }}"); do | |||
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Some containers like telemetry will start after 3 minutes.
If we upgrade SONiC image, and start the system for the first time, can we update /etc/resolv.conf in telemetry container?
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docker ps -a command returns all existing containers on the system. And we will update /etc/resolv.conf file for all containers including those that are not running.
For the case when the container is created in the runtime (for example app extension), when the dockerd starts the container it copies /etc/resolv.conf file from the host OS into the container filesystem. So, we will always have a valid DNS configuration inside the containers.
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…working reconfiguration in Linux. (sonic-net#13516)" (sonic-net#14902)" This reverts commit 72c52bc.
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@ganglyu would you please refer to comments and help to approve? |
ganglyu
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Yakiv-Huryk
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liat-grozovik
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)" This reverts commit 475fe27.
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)" This reverts commit 475fe27.
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)" This reverts commit 475fe27.
ganglyu
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What I did sonic-net/sonic-buildimage#14549 This PR has introduced DNS configuration to CONFIG_DB, we need to migrate original CONFIG_DB to support DNS configuration during upgrading SONiC. How I did it If there's no DNS_NAMESERVER table in CONFIG_DB, read DNS_NAMESERVER table from minigraph and update CONFIG_DB. How to verify it Run unit test for db migrator.
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…c-net#14549)"" This reverts commit 43ca7d3.
rajkumar38
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What I did sonic-net/sonic-buildimage#14549 This PR has introduced DNS configuration to CONFIG_DB, we need to migrate original CONFIG_DB to support DNS configuration during upgrading SONiC. How I did it If there's no DNS_NAMESERVER table in CONFIG_DB, read DNS_NAMESERVER table from minigraph and update CONFIG_DB. How to verify it Run unit test for db migrator.
rajkumar38
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What I did sonic-net/sonic-buildimage#14549 This PR has introduced DNS configuration to CONFIG_DB, we need to migrate original CONFIG_DB to support DNS configuration during upgrading SONiC. How I did it If there's no DNS_NAMESERVER table in CONFIG_DB, read DNS_NAMESERVER table from minigraph and update CONFIG_DB. How to verify it Run unit test for db migrator.
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@oleksandrivantsiv @ganglyu For me, this looks like a feature other than bug fix, if so, not to 202305. |
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The feature was discussed for 202305 and hld was available for long time including PRs
The history is that it was reported as bug
The solution was to add config and handle it as a feature
It is nice to have in 202305, not must.
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Subject: Re: [sonic-net/sonic-buildimage] [dns] Add support for static DNS configuration. (PR #14549)
@oleksandrivantsiv<https://github.com/oleksandrivantsiv> @ganglyu<https://github.com/ganglyu> For me, this looks like a feature other than bug fix, if so, not to 202305.
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@StormLiangMS can we finalize this? Should we backport the changes to 202305? Thanks, |
pdhruv-marvell
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What I did sonic-net/sonic-buildimage#14549 This PR has introduced DNS configuration to CONFIG_DB, we need to migrate original CONFIG_DB to support DNS configuration during upgrading SONiC. How I did it If there's no DNS_NAMESERVER table in CONFIG_DB, read DNS_NAMESERVER table from minigraph and update CONFIG_DB. How to verify it Run unit test for db migrator.
rajkumar38
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Aug 28, 2023
What I did sonic-net/sonic-buildimage#14549 This PR has introduced DNS configuration to CONFIG_DB, we need to migrate original CONFIG_DB to support DNS configuration during upgrading SONiC. How I did it If there's no DNS_NAMESERVER table in CONFIG_DB, read DNS_NAMESERVER table from minigraph and update CONFIG_DB. How to verify it Run unit test for db migrator.
sonic-otn
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Sep 20, 2023
- Why I did it Add support for static DNS configuration. According to sonic-net/SONiC#1262 HLD. - How I did it Add a new resolv-config.service that is responsible for transferring configuration from Config DB into /etc/resolv.conf file that is consumed by various subsystems in Linux to resolve domain names into IP addresses. - How to verify it Run the image compilation. Each component related to the static DNS feature is covered with the unit tests. Run sonic-mgmt tests. Static DNS feature will be covered with the system tests. Install the image and run manual tests.
lixiaoyuner
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Highlight change, the DHCP config removed from master branch. files/image_config/resolv-config/resolv.conf Related work items: sonic-net#49, sonic-net#2598, sonic-net#11862, sonic-net#12530, sonic-net#14000, sonic-net#14549, sonic-net#14814, sonic-net#15077, sonic-net#15252, sonic-net#15253, sonic-net#15357, sonic-net#15384, sonic-net#15394, sonic-net#15399, sonic-net#15405, sonic-net#15566, sonic-net#15591, sonic-net#15592, sonic-net#15593, sonic-net#15602, sonic-net#15604, sonic-net#15611, sonic-net#15621, sonic-net#15625, sonic-net#15634, sonic-net#15635
lixiaoyuner
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Merge code from master to internal Related work items: sonic-net#32, sonic-net#49, sonic-net#376, sonic-net#2598, sonic-net#11862, sonic-net#12530, sonic-net#14000, sonic-net#14547, sonic-net#14549, sonic-net#14814, sonic-net#15077, sonic-net#15239, sonic-net#15252, sonic-net#15253, sonic-net#15298, sonic-net#15357, sonic-net#15384, sonic-net#15394, sonic-net#15399, sonic-net#15405, sonic-net#15511, sonic-net#15566, sonic-net#15583, sonic-net#15591, sonic-net#15592, sonic-net#15593, sonic-net#15602, sonic-net#15604, sonic-net#15611, sonic-net#15621, sonic-net#15625, sonic-net#15634, sonic-net#15635, sonic-net#15645, sonic-net#15646, sonic-net#15647, sonic-net#15657, sonic-net#15658, sonic-net#15697, sonic-net#15699
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Why I did it
Add support for static DNS configuration. According to sonic-net/SONiC#1262 HLD.
How I did it
Add a new
resolv-config.servicethat is responsible for transferring configuration from Config DB into/etc/resolv.conffile that is consumed by various subsystems in Linux to resolve domain names into IP addresses.How to verify it
Which release branch to backport (provide reason below if selected)
Description for the changelog
Ensure to add label/tag for the feature raised. example - PR#2174 under sonic-utilities repo. where, Generic Config and Update feature has been labelled as GCU.
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)