[Lesson Learned] Nexus 7k Upgrade Issue

Ringkasan troubleshooting Nexus upgrade di salah satu customer beberapa waktu lalu. Beberapa credential disamarkan.

Problem:

1. OS yang diload setelah restart upgrade tetap OS yang lama (6.2.12)
2. Image dan kickstart image yang baru (6.2.16) telah dimasukkan ke bootflash.
3. Image dan kickstart image baru (6.2.16) tidak terupload ke dalam Loader Nexus
4. Boot variable telah di setting ke OS dan kickstart image yang baru

Problem Verification:

Setelah reload:

Additional Information

Di loader tidak ada image dan kickstart image yang baru (6.2.16):

Troubleshooting Process

1. Siapkan USB berisi OS image dan kickstart image baru (6.2.16)
2. Load OS image dan kickstart dari USB dari loader
3. Setelah masuk ke CLI admin, cek show version
4. Cek di loader apakah OS image dan kickstart baru sudah tercopy ke Loader, agar switch tidak harus load image dari USB dengan cara reboot system dan masuk ke Loader (optional)

Detailed Solution

1. Masukkan USB ke port USB di switch, set agar boot OS image dan kickstart image dari USB
   
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   loader> dir usb1:   usb1: n7000-s2-kickstart.6.2.16.bin n7000-s2-dk9.6.2.16.bin n7000-s2-dk9.6.2.12.bin n7000-s2-kickstart.6.2.12.bin loader> boot usb1:n7000-s2-kickstart.6.2.16.bin Filesystem type is fat, partition type 0xc Booting kickstart image: usb1:n7000-s2-kickstart.6.2.16.bin.... .......................................... ..................................... ........................................ Kickstart digital signature verification Successful Image verification OK

2. Setelah masuk ke CLI, cek version dan boot current
   
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   N7k2# show version Cisco Nexus Operating System (NX-OS) Software BIOS: version 2.12.0 kickstart: version 6.2(16) system: version 6.2(16) BIOS compile time: 05/29/2013 system image file is: bootflash:///n7000-s2-dk9.6.2.16.bin system compile time: 1/27/2016 9:00:00 [04/06/2016 05:16:06]   N7k2# show boot current sup-1 kickstart variable = bootflash:/n7000-s2-kickstart.6.2.16.bin system variable = bootflash:/n7000-s2-dk9.6.2.16.bin

3. Secara otomatis OS image dan kickstart baru sudah ter-copy ke loader, jadi USB bisa dilepas
   
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   N7k2# reload This command will reboot the system. (y/n)? [n] y   loader> dir bootflash:   bootflash: lost+found n7000-s2-kickstart.6.1.2.bin n7000-s2-dk9.6.1.2.bin n7000-s2-dk9.6.2.12.bin n7000-s2-kickstart.6.2.12.bin n7000-s2-kickstart.6.2.16.bin n7000-s2-dk9.6.2.16.bin   loader> reboot   Autobooting bootflash:/n7000-s2-kickstart.6.2.16.bin bootflash:/n7000-s2-dk9.6. 2.16.bin... Filesystem type is ext2fs, partition type 0x83 Booting kickstart image: bootflash:/n7000-s2-kickstart.6.2.16.bin.... ............................................................................... Kickstart digital signature verification Successful Image verification OK

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