FIX-ssl-certificate-key-pair-is-not-valid-Ubuntu-18.04

#Fix "ssl certificate key pair is not valid" Ubuntu 18.04 #Vesta / Hestiacp

1. Check Openssl version

openssl version

OpenSSL 1.1.1 11 Sep 2018 <- BAD VERSION

Need install 1.1.1c version

2. Install openssl 1.1.1c

sudo -s
apt install make gcc -y
cd /usr/local/src
wget https://www.openssl.org/source/openssl-1.1.1c.tar.gz
tar xvf openssl-1.1.1c.tar.gz
cd openssl-1.1.1c
./config -Wl,--enable-new-dtags,-rpath,'$(LIBRPATH)'
make
make install

3. Add line in "/etc/manpath.config"

MANPATH_MAP /usr/local/ssl/bin /usr/local/ssl/man

4. run mandb

mandb

5. Add in "/etc/environment"

/usr/local/ssl/bin:

example -> PATH="/usr/local/ssl/bin:...

6. Check Openssl version

openssl version 

OpenSSL 1.1.1c 28 May 2019 <- Good version :)

Now you can install the ssl certificate.