Add DNS lookup plugin#1080
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| readonly KUBERNETES_SERVICE='kubernetes.default' | ||
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| # Check getent command is present | ||
| if ! command -v getent >/dev/null; then |
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getent seems the most common tool available in a host, but do we want to use hosts or nslookup just in case getent is not available?
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I picked it since I assumed it would be the most available. I could change the logic to fall back to other tools, if getent isn't available?
May be in this order:
getenthostnslookup
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It will be good to know what install each tool in debian and red hat per example, I think gerent comes as part as libc so that makes it pretty common
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Using containers, and I don't know if that's a good idea:
Red Hat:
adrian@Adrians-MacBook-Pro:~$ docker run redhat/ubi10 getent hosts example.com
2600:1406:bc00:53::b81e:94c8 example.com
2600:1406:bc00:53::b81e:94ce example.com
2600:1408:ec00:36::1736:7f24 example.com
2600:1408:ec00:36::1736:7f31 example.com
2600:1406:3a00:21::173e:2e65 example.com
2600:1406:3a00:21::173e:2e66 example.com
adrian@Adrians-MacBook-Pro:~$ docker run redhat/ubi10 host example.com
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "host": executable file not found in $PATH
Run 'docker run --help' for more information
adrian@Adrians-MacBook-Pro:~$ docker run redhat/ubi10 nslookup example.com
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "nslookup": executable file not found in $PATH
Run 'docker run --help' for more informationDebian:
adrian@Adrians-MacBook-Pro:~$ docker run debian:latest getent hosts example.com
2600:1406:bc00:53::b81e:94c8 example.com
2600:1406:bc00:53::b81e:94ce example.com
2600:1408:ec00:36::1736:7f24 example.com
2600:1408:ec00:36::1736:7f31 example.com
2600:1406:3a00:21::173e:2e65 example.com
2600:1406:3a00:21::173e:2e66 example.com
adrian@Adrians-MacBook-Pro:~$ docker run debian:latest host example.com
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "host": executable file not found in $PATH
Run 'docker run --help' for more information
adrian@Adrians-MacBook-Pro:~$ docker run debian:latest nslookup example.com
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "nslookup": executable file not found in $PATH
Run 'docker run --help' for more information
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LGTM |
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/assign @derekwaynecarr |
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I do not think derek is very active these days, let me tag @danwinship since he was also interested. @SergeyKanzhelev can you recommend some active mantainers to review this PR? |
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/lgtm |
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/ok-to-test |
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Hey @derekwaynecarr any chance I can get a review here? |
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We are wrapping up the new versioning. Trying to close on branch creation: #1093 What version do you hope to have it in? |
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Oh, there's no rush to get it into a specific version. It's just been sitting for a while and I wasn't sure if I should close this or try get it merged. |
I don't really know much about node-problem-detector, but yes, this seems to do what I was thinking |
Co-authored-by: Dan Winship <danwinship@redhat.com>
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: adrianmoisey, hakman, vteratipally The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
Approvers can indicate their approval by writing |
8 participants
Add a DNS lookup plugin, as per #991
I haven't done a curl yet, I just want to see if this is the right track
cc @aojea