WD My Cloud Home Open Ports

Simply scanned the new units to see what ports are open:

al@alex490:~$ nmap -p- 192.168.nnn.nnn

Starting Nmap 7.60 ( https://nmap.org ) at 2020-11-25 18:41 GMT
Nmap scan report for MyCloud-R6GNH47Y.lab.tsew.net (192.168.0.132)
Host is up (0.0011s latency).
Not shown: 65527 closed ports
PORT STATE SERVICE
80/tcp open http
139/tcp open netbios-ssn
443/tcp open https
445/tcp open microsoft-ds
548/tcp open afp
8080/tcp open http-proxy
9999/tcp open abyss
33284/tcp open unknown

Regenerating LetsEncrypt Certs

Easy way to update LetsEncrypt certs

stop letsencrypt

%s/HTTPS_METHOD=redirect/HTTPS_METHOD=noredirect

start letsencrypt

%s/HTTPS_METHOD=noredirect/HTTPS_METHOD=redirect

quit and verify

echo | openssl s_client -servername HostName -connect HostName:443 2>/dev/null | openssl x509 -noout -dates

Upgrading Centos from 7 to 8 with ZFS

yum install -y epel-release 
yum install -y yum-utils
yum install -y rpmconf
rpmconf -a
package-cleanup --leaves
package-cleanup --orphans
yum install -y dnf
dnf -y remove yum yum-metadata-parser
rm -Rf /etc/yum
dnf upgrade
dnf -y upgrade http://mirror.bytemark.co.uk/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.0-0.1905.0.9.el8.x86_64.rpm
dnf -y upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
dnf clean all
rpm -e zfs
rpm -e kmod-zfs
rpm -e `rpm -q kernel`
rpm -e --nodeps sysvinit-tools
dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync 
dnf -y install kernel-core
dnf -y groupupdate "Core" "Minimal Install"
cat /etc/redhat-release
yum install http://download.zfsonlinux.org/epel/zfs-release.el8_0.noarch.rpm
yum -y update
yum -y install zfs
zpool upgrade -v
zpool scrub geekpool 

Your pool name instead of geekpool in the last command