Upstream infra hitting network related issue: [Errno 101] Network is unreachable' / Curl error (28): Timeout was reached [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]

[Sandeep Yadav]

Description:-

Upstream infra hitting network-related issue: [Errno 101] Network is unreachable' / Curl error (28): Timeout was reached [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]

Logs:-

https://aeba86a5198f8e31395f-8a7f84e21ca1d45743189f63b9f2e0a3.ssl.cf1.rackcdn.com/792802/6/check/tripleo-ci-centos-8-standalone-on-multinode-ipa/23d79e8/job-output.txt

~~~
2021-05-26 12:21:38.065645 | primary | Added osepel repo from http://mirror.gra1.ovh.opendev.org/epel/7/x86_64/
2021-05-26 12:21:38.065652 | primary | osepel 0.0 B/s | 0 B 00:00
2021-05-26 12:21:38.065659 | primary | Errors during downloading metadata for repository 'osepel':
2021-05-26 12:21:38.065681 | primary | - Curl error (6): Couldn't resolve host name for http://mirror.gra1.ovh.opendev.org/epel/7/x86_64/repodata/repomd.xml [Could not resolve host: mirror.gra1.ovh.opendev.org]
2021-05-26 12:21:38.065688 | primary | Error: Failed to download metadata for repo 'osepel': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
~~~

https://storage.bhs.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_cc8/793145/2/check/tripleo-ci-centos-8-content-provider/cc8dbe8/logs/undercloud/home/zuul/repo_setup.log

~~~
2021-05-26 12:06:01 | Errors during downloading metadata for repository 'centos-8-fix':
2021-05-26 12:06:01 | - Curl error (28): Timeout was reached for http://mirror.regionone.limestone.opendev.org:8080/rdo/centos8-master/deps/c8-fix/repodata/repomd.xml [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]
2021-05-26 12:06:01 | Error: Failed to download metadata for repo 'centos-8-fix': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
~~~

https://99e02e92a26472cf4bfd-76db863cb86d059bc445c2f80e5d4947.ssl.cf5.rackcdn.com/772571/26/check/tripleo-ci-centos-8-containers-multinode-ussuri/4503771/job-output.txt

~~~
pip._vendor.requests.exceptions.ConnectionError: HTTPSConnectionPool(host='opendev.org', port=443): Max retries exceeded with url: /openstack/requirements/raw/branch/stable/ussuri/upper-constraints.txt (Caused by NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9537ae4470>: Failed to establish a new connection: [Errno 101] Network is unreachable',))
~~~