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Maniphest T338130

cloud-private: CIDR clash with gitlab-runners
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Description

I just found this on ops/puppet.git:

arturo@endurance:~/git/wmf/operations/puppet $ git grep 172.20
hieradata/cloud.yaml:profile::gitlab::runner::docker_subnet: "172.20.0.0/16"
hieradata/cloud/eqiad1/devtools/hosts/gitlab-runner-1003.yaml:profile::gitlab::runner::docker_subnet: '172.20.0.0/16'
hieradata/common/profile/wmcs/cloud_private_subnet.yaml:profile::wmcs::cloud_private_subnet::supernet: 172.20.0.0/16

I.e, there are more than 1 thing making use of the 172.20.0.0/16 CIDR, which can cause confusion and other problems.

This is allocated in netbox https://netbox.wikimedia.org/ipam/prefixes/652/ as "WMCS cloud-private aggregate".

Details

SubjectRepoBranchLines +/-
gitlab_runner: change docker_subnet in WMCSoperations/puppetproduction+2 -2
Customize query in gerrit

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Event Timeline

aborrero triaged this task as Low priority.Jun 5 2023, 10:33 AM
aborrero created this task.
aborrero added a project: User-aborrero.
aborrero moved this task from Backlog to Radar on the User-aborrero board.
aborrero removed a project: cloud-services-team (FY2022/2023-Q4).
LSobanski mentioned this in T346060: GitLab Runners in WMCS are offline.Sep 11 2023, 4:21 PM
gerritbot added a comment.Sep 12 2023, 8:13 AM

Change 956784 had a related patch set uploaded (by Jelto; author: Jelto):

[operations/puppet@production] gitlab_runner: change docker_subnet in WMCS

https://gerrit.wikimedia.org/r/956784

gerritbot added a project: Patch-For-Review.Sep 12 2023, 8:13 AM
gerritbot added a comment.Sep 12 2023, 8:27 AM

Change 956784 merged by Jelto:

[operations/puppet@production] gitlab_runner: change docker_subnet in WMCS

https://gerrit.wikimedia.org/r/956784

Maintenance_bot removed a project: Patch-For-Review.Sep 12 2023, 8:31 AM
aborrero added a subtask: T346060: GitLab Runners in WMCS are offline.Sep 12 2023, 10:38 AM
aborrero closed subtask T346060: GitLab Runners in WMCS are offline as Resolved.Sep 12 2023, 10:45 AM
aborrero renamed this task from cloud-private: investigate potential CIDR clash to cloud-private: CIDR clash.Sep 12 2023, 10:52 AM
aborrero raised the priority of this task from Low to High.
• taavi renamed this task from cloud-private: CIDR clash to cloud-private: CIDR clash with gitlab-runners.Sep 27 2023, 7:51 AM
• taavi closed this task as Resolved.
• taavi reassigned this task from cmooney to Jelto.
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