https://virment.com/setup-nextcloud-behind-nginx-reverse-proxy/

xxx.f5.si で SSL設定済み　→サーバー関連｜Nginxの設定

ubuntu@i-12100000390816:~$ sudo snap install nextcloud
nextcloud 24.0.1snap1 from Nextcloud✓ installed
ubuntu@i-12100000390816:~$ sudo snap set nextcloud ports.http=81 ports.https=444
error: cannot perform the following tasks:
- Run service command "restart" for services ["apache"] of snap "nextcloud" (systemctl command [start snap.nextcloud.apache.service] failed with exit status 1: Job for snap.nextcloud.apache.service failed.
See "systemctl status snap.nextcloud.apache.service" and "journalctl -xe" for details.
)
ubuntu@i-12100000390816:~$

なんかエラー出てるね

ubuntu@i-12100000390816:~$ sudo nextcloud.manual-install admin <PASSWORD>
Nextcloud was successfully installed
ubuntu@i-12100000390816:~$
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:set trusted_domains 1 --value=xxx.f5.si
System config value trusted_domains => 1 set to string xxx.f5.si
ubuntu@i-12100000390816:~$
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:get trusted_domains
localhost
xxx.f5.si
ubuntu@i-12100000390816:~$
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:set overwritehost --value="xxx.f5.si"
System config value overwritehost set to string xxx.f5.si
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:set overwriteprotocol --value="https"
System config value overwriteprotocol set to string https
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:set overwritewebroot --value="/nextcloud"
System config value overwritewebroot set to string /nextcloud
ubuntu@i-12100000390816:~$ sudo nextcloud.occ config:system:set overwrite.cli.url --value="https://xxx.f5.si/nextcloud"
System config value overwrite.cli.url set to string https://xxx.f5.si/nextcloud
ubuntu@i-12100000390816:~$

なんか駄目だね・・・