Nexus 5K - upgrade problem

[babalao]

Hello,

when I try to upgrade, it fails because the file system (bootflash:) needs to free some space. From what I seen the files are in the directory bootflash:saved_cores.

These are the file (there are a lot of this): 10653683 Jan 14 14:16:04 2023 1673716564_0x101_in.dcos-telnetd_log.8645.tar.gz

Can I delete this files or could be a problem?

I show you the steps below:

N5K# show install all impact kickstart n6000-uk9-kickstart.7.3.13.N1.1.bin system n6000-uk9.7.3.13.N1.1.bin

Install has failed. free space in the filesystem is below threshold (0x40930062)
........

N5K# show system internal log install details | include space
[08/13/2024 22:14:27.70440] [check_freespace:8722:1] check_freespace: /bootflash total blocks: 1883807, free blocks: 337789, space being used: 82%
[08/13/2024 22:14:27.70620] [fsm_action_pre_verification:626:1] Free space in "/bootflash" partition is below threshold: 18

......

N5K#dir bootflash:saved_cores

8788550 Jan 14 14:06:39 2023 1673715998_0x101_in.dcos-telnetd_log.8605.tar.gz
8789752 Jan 14 14:06:40 2023 1673715999_0x101_in.dcos-telnetd_log.8753.tar.gz
10653683 Jan 14 14:16:04 2023 1673716564_0x101_in.dcos-telnetd_log.8645.tar.gz
8789526 Jan 14 14:31:18 2023 1673717477_0x101_in.dcos-telnetd_log.17590.tar.gz
10630966 Jan 14 14:37:35 2023 1673717854_0x101_in.dcos-telnetd_log.17616.tar.gz
10628421 Jan 14 18:05:41 2023 1673730340_0x101_in.dcos-telnetd_log.6108.tar.gz
10629044 Jan 14 18:05:43 2023 1673730342_0x101_in.dcos-telnetd_log.6306.tar.gz
10612796 Jan 14 18:12:01 2023 1673730720_0x101_in.dcos-telnetd_log.7257.tar.gz
8778876 Jan 14 21:33:37 2023 1673742816_0x101_in.dcos-telnetd_log.30414.tar.gz
8788666 Jan 14 21:36:55 2023 1673743014_0x101_in.dcos-telnetd_log.31181.tar.gz
10593371 Jan 14 21:46:52 2023 1673743619_0x101_in.dcos-telnetd_log.30897.tar.gz
10645980 Jan 14 21:46:43 2023 1673743620_0x101_in.dcos-telnetd_log.31177.tar.gz
10597499 Jan 14 21:46:34 2023 1673743621_0x101_in.dcos-telnetd_log.31248.tar.gz
10611263 Jan 14 21:46:24 2023 1673743623_0x101_in.dcos-telnetd_log.31369.tar.gz
10595176 Jan 14 21:50:22 2023 1673743821_0x101_in.dcos-telnetd_log.32373.tar.gz
10613228 Jan 15 01:27:03 2023 1673756823_0x101_in.dcos-telnetd_log.32471.tar.gz
10606632 Jan 15 04:36:38 2023 1673768198_0x101_in.dcos-telnetd_log.17599.tar.gz
10611564 Jan 15 06:28:06 2023 1673774885_0x101_in.dcos-telnetd_log.28601.tar.gz
10619812 Jan 15 09:22:42 2023 1673785362_0x101_in.dcos-telnetd_log.12402.tar.gz
10617207 Jan 15 12:14:16 2023 1673795655_0x101_in.dcos-telnetd_log.28307.tar.gz
10579383 Jan 15 12:32:34 2023 1673796753_0x101_in.dcos-telnetd_log.32114.tar.gz

...

...

Thank you.

Regards

[Reza Sharifi]

N5K#dir bootflash:saved_cores

8788550 Jan 14 14:06:39 2023 1673715998_0x101_in.dcos-telnetd_log.8605.tar.gz
8789752 Jan 14 14:06:40 2023 1673715999_0x101_in.dcos-telnetd_log.8753.tar.gz
10653683 Jan 14 14:16:04 2023 1673716564_0x101_in.dcos-telnetd_log.8645.tar.gz

These are mostly log files on the flash. If you don't need them, they should be deleted to make space, and also make sure you are logging to an external device so the flash does not get full.

HTH

[shambhu.kumar]

These are the old logs files occupying spaces. There is vulnerability (CVE-2024-20399) detected in NX-OS 7.3(13)N1(1) and fix is available in Release 7.3(15)N1(1) 

Thanks and regards

Shambhu Kumar

[babalao]

Hello, thank you ALL for the replies.

@shambhu Kumar this brings another doubt, which version would be better to go?:

NX-OS 7.3(13)N1(1) - which is the recommended version right now but has this vunlerability     or

NX-OS 7.3(15)N1(1) - which fixes this vuln, but not recommended right now by Cisco 

thank you

[Reza Sharifi]

NX-OS 7.3(13)N1(1) - which is the recommended version right now but has this vunlerability 

Go with the recommended version by Cisco.

HTH

[Pavel Tarakanov]

It's core files - dump of the process's memory during the crash. They can be deleted safely if there is no need in RCA. In your case, they can deleted.

[Giuseppe Larosa]

Hello @babalao ,

you can upload the files to an FTP server or TFTP server and then you can delete them

. As it has been already explained by colleagues these are core dump files created when the system had SW crashes.

Hope to help

Giuseppe