This was an issue I have faced while setting up this blog. I was getting 404 errors for all the post links in this blog when selecting the non default permalink structure with SSL. 

First thing I tried was to regenerate the .htaccess file. Removed the existing .htaccess file in the WordPress root folder. Regenerated the file by switching  the permalink again. That didnt worked for me. The fix was something with the web sever level. Finally, I found the fix. 

The directory tag is required in ssl virtual host config of apache same as of http port 80, to allow override redirect rules using .htaccess of wordpress.

Example

    <Directory /var/www/html/devopslife.io/>
        DirectoryIndex index.php
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>

Thanks to this digitalocean thread