upgrade from 4.4 to 5 failed !

[blackmetal]

Hello,
i just follow https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0#Caveats_to_know_before_you_start and upgrade to proxmox 5 but right now no commands for proxmox like as pveproxy --debug and etc work!
when i execute apt-get update it says
W: The repository 'https://enterprise.proxmox.com/debian stretch Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch https://enterprise.proxmox.com/debian/dists/stretch/pve-enterprise/binary-amd64/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Some index files failed to download. They have been ignored, or old ones used instead.
root@usa-pve:/var/log# update-ca-certificates
Updating certificates in /etc/ssl/certs...

when i execute service pve-manager start it says it is dead it seems pve-manager and related service not installed!
can any one help me?
thanks

 

[dietmar]

Does it help if you manually install the repository key:

https://pve.proxmox.com/wiki/Package_Repositories#_secureapt

 

[tom]

And of course, you need a subscription key to access the enterprise repository.

If you do not have a key, you need to disable the enterprise repo and you have to manually add the pve-no-subscription repo.

See https://pve.proxmox.com/wiki/Package_Repositories