[Nexthop] Distro CLI reprovision #976
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The Distro CLI getip and ssh commands make a best-effort attempt to determine an IP for the given switch based on its MAC address and then either return that IP or directly ssh to it. It does so by connecting to the Distro Infra container and checking on the configured interface for pre-existing IP neighbor/ARP entries. If no such entries are found it will attempt a subnet ping to refresh the Linux kernel neighbor entries. In most cases this is sufficient after the system has PXE booted and therefore the neighbor cache is filled. Testing is as easy as starting the Distro Infra container: ``` $ ./distro_infra.sh --intf eth1 --persist-dir data ``` Then running the fboss-image device getip command with the appropriate MAC address: ``` $ ./fboss-image device dc:da:4d:fc:ad:2d getip [0.00s] Getting IP for device dc:da:4d:fc:ad:2d 10.250.33.2 ```
The fboss-image device reprovision command logs onto the switch, wipes enough of the installed image to be confident that provisioning will proceed or loudly fail, then reboots. Testing: Run the reprovision command: ``` $ ./fboss-image device dc:da:4d:fc:ad:2d reprovision Warning: Permanently added '10.250.33.2' (ED25519) to the list of known hosts. root@10.250.33.2's password: 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 0.0181773 s, 2.9 GB/s Yes/No? Warning: Partition /dev/nvme0n1p3 is being used. Are you sure you want to continue? yes Ignore/Cancel? ignore Error: Partition(s) 3 on /dev/nvme0n1 have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further changes. Information: You may need to update /etc/fstab. Rebooting. Timeout, server 10.250.33.2 not responding ``` See on the switch console: ``` [root@fboss103 ~]# [367274.792918] reboot: Restarting system [15][19][11][32][A1][A9][A9][A9][A8][AA][AE][AF][AF][CD][B0][C1][B1][C2][C3][B1][B4][B8][C5][B2][C6][C7][B3][B6][B6][B7][B7][B7][B7][B7][BE][D2][D6][B9][C7][C7][CC][B7][B8][C9][BA][CB][BB][D0][D0][D0][D0][D0][D1][D1][D1][CA][B7][D3][CC][BC][CE][C6][AF][4F][3B][33][60][ 61][9A][62][68][69][6A][79][70][71][90][91][92][94][94 Version 2.22.1286. Copyright (C) 2024 AMI BIOS Date: 06/27/2024 13:16:17 Ver: NL402 Press <DEL> or <ESC> to enter setup. >>Checking Media Presence...... >>Media Present...... >>Start PXE over IPv6 on MAC: DC-DA-4D-FC-AD-2D. Press ESC key to abort PXE boot.. ```
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This is stacked on top of #975 |
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Pre-submission checklist
pip install -r requirements-dev.txt && pre-commit installpre-commit runSummary
The fboss-image device reprovision command logs onto the switch, wipes
enough of the installed image to be confident that provisioning will
proceed or loudly fail, then reboots.
Test Plan
Run the reprovision command:
See on the switch console: