What is the content of /dev/disk/by-id on AWS EC2 instance?
On Wed, Jul 17, 2024 at 11:21 AM 'Rowe, Walter P. (Fed)' via Ansible
Project <[email protected]> wrote:
> I am querying ansible facts of AWS EC2s to get volume IDs without having
> to use the AWS API. Prior to Red Hat 9 I could use
> *ansible_device_links['ids'][device
> name]* to get the associated volume ID.
>
>
> *REDHAT 8 *
> "ansible_facts": {
> "ansible_device_links": {
> "ids": {
> "*nvme0n1*": [
> "nvme-Amazon_Elastic_Block_Store_
> *vol0205cf99926f7c3e8*",
>
>
> "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
>
> Starting with Red Hat 9 we seem to have lost this info.
>
>
> *REDHAT 9 *
> "ansible_facts": {
> "ansible_device_links": {
> "ids": {},
>
> Is this something unique to my environment or is this something that
> changed with RHEL facts?
>
> Walter
> --
> Walter Rowe, Division Chief
> Infrastructure Services Division
> Mobile: 202.355.4123
>
>
> *REDHAT 8 *
> {
> "ansible_facts": {
> "ansible_device_links": {
> "ids": {
> "nvme0n1": [
> "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8",
>
> "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme0n1p1": [
>
> "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8-part1",
>
> "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part1",
>
> "wwn-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part1"
> ],
> "nvme0n1p2": [
>
> "nvme-Amazon_Elastic_Block_Store_vol0205cf99926f7c3e8-part2",
>
> "nvme-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part2",
>
> "wwn-nvme.1d0f-766f6c3032303563663939393236663763336538-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001-part2"
> ],
> "nvme1n1": [
> "nvme-Amazon_Elastic_Block_Store_vol0abf628274ab398f2",
>
> "nvme-nvme.1d0f-766f6c3061626636323832373461623339386632-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme2n1": [
> "nvme-Amazon_Elastic_Block_Store_vol0690b9672f6e52240",
>
> "nvme-nvme.1d0f-766f6c3036393062393637326636653532323430-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme3n1": [
> "nvme-Amazon_Elastic_Block_Store_vol08404f1191eb63440",
>
> "nvme-nvme.1d0f-766f6c3038343034663131393165623633343430-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme4n1": [
> "nvme-Amazon_Elastic_Block_Store_vol081f2b191f4e7d7cc",
>
> "nvme-nvme.1d0f-766f6c3038316632623139316634653764376363-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme5n1": [
> "nvme-Amazon_Elastic_Block_Store_vol0b51ac580c17c745e",
>
> "nvme-nvme.1d0f-766f6c3062353161633538306331376337343565-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme6n1": [
> "nvme-Amazon_Elastic_Block_Store_vol07427283fef5d12ad",
>
> "nvme-nvme.1d0f-766f6c3037343237323833666566356431326164-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ],
> "nvme7n1": [
> "nvme-Amazon_Elastic_Block_Store_vol07c3177d94a329f70",
>
> "nvme-nvme.1d0f-766f6c3037633331373764393461333239663730-416d617a6f6e20456c617374696320426c6f636b2053746f7265-00000001"
> ]
> },
> "labels": {
> "nvme1n1": [
> "tmp"
> ],
> "nvme2n1": [
> "swap"
> ],
> "nvme3n1": [
> "apps"
> ],
> "nvme4n1": [
> "external"
> ],
> "nvme5n1": [
> "archive"
> ],
> "nvme6n1": [
> "orafra"
> ],
> "nvme7n1": [
> "oradata"
> ]
> },
> "masters": {},
> "uuids": {
> "nvme0n1p2": [
> "c9aa25ee-e65c-4818-9b2f-fa411d89f585"
> ],
> "nvme1n1": [
> "e5d6f42e-45ca-4b3b-8492-46314d453a31"
> ],
> "nvme2n1": [
> "5fd97b83-1ed6-4237-92cc-c95462493da6"
> ],
> "nvme3n1": [
> "1130bd72-a26f-487f-8cd9-651618f8e840"
> ],
> "nvme4n1": [
> "c99caa7c-15c8-4292-8ff1-6f5800f6ddc7"
> ],
> "nvme5n1": [
> "e04f1c49-d88e-4fa1-93de-9418e1801a2d"
> ],
> "nvme6n1": [
> "c38b2d4d-789c-46e6-a46f-e6f1fc7ce363"
> ],
> "nvme7n1": [
> "57406353-bf84-4f63-8fce-d4ff8d786aa1"
> ]
> }
> },
> "discovered_interpreter_python": "/usr/bin/python3.12"
> },
> "changed": false
> }
>
>
>
> *REDHAT 9 *
> {
> "ansible_facts": {
> "ansible_device_links": {
> "ids": {},
> "labels": {
> "xvda3": [
> "boot"
> ],
> "xvda4": [
> "root"
> ]
> },
> "masters": {},
> "uuids": {
> "xvda2": [
> "7B77-95E7"
> ],
> "xvda3": [
> "0e2c50ac-b7b2-4076-b753-43ae01e1e0d1"
> ],
> "xvda4": [
> "658dabc8-57f5-4844-8315-01562be5c996"
> ]
> }
> },
> "discovered_interpreter_python": "/usr/bin/python3.9"
> },
> "changed": false
> }
>
> --
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> .
>
--
Thanks,
Abhijeet Kasurde
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