IMPORTANT, please fill the questions
We assume you are using Bitnami to deploy your application.
Which version of the application are you using?:
Installed version was 4.7-0 though it now has WP 4.8
Please choose how you got the application: Installer (Windows, Linux, macOS), cloud image (AWS, GCE, Azure, ...) or VM (VMDK, VBOX):
AWS cloud image
Have you installed any plugin or modified any configuration file?:
I have upgraded WP to 4.8 and made some htaccess modifications
Describe here your question/suggestion/issue (expected and actual results):
Can someone please detail and clarify the steps needed to upgrade PHP and Apache for security reasons? I am using 4 WP Multisite VMs in AWS, created through Bitnami images, in a production environment on sites receiving thousands of hits per day, because at the time of signing up it wasn't clear that they were not easily updatable and so apparently more suited for testing environments...
Do I need to create all new AWS VMs or is there a way to upgrade the LAMP stack within my existing VMs? From reading documentation and other posts, it seems that I am going to need to launch all-new VMs from updated images, take them online, actually migrate the WordPress installations from the old to new VMs, then update the IP addresses or disassociate my existing elastic IPs and reassociate them with the new VMs... if all this is true, it makes me wonder why I bothered to use Bitnami images at all when it would have been much easier to just create an Amazon Linux VM through their system and be able to just update/upgrade everything from the command line in ways more familiar to me (as I know my way around Linux). I originally went with Bitnami setting these up due to relatively limited AWS knowledge at the time.
Or is there a better way? Can I just install a new version of the stack within the existing VMs without having to spin up all-new VMs? Then do something like sudo mv... to migrate the WordPress installations over to the new version on the same server?
Any help will be appreciated. I do have to say, if I am going to have to actually spin up new VMs from updated images each time it is "necessary" to update, I'll probably abandon Bitnami and go my own way.