There is a ton of interest in learning Kubernetes and Red Hat's distribution of Kubernetes, OpenShift. One of the ways Red Hat makes available to experience OpenShift 4 is via Code Ready Containers (CRC). In this article I will walk through the steps to install CRC on a MacBook Pro. This same procedure should work on any system running macOS.
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Note that CRC can also be installed on Linux or Windows systems.
For this write up, I am going to use the ocp-install-demo repository out of Red Hat Demo Central on GitLab.com. CRC is already pretty easy, but this particular repo is aimed at simplifying some of the procedures across those 3 different operating systems.
You can see me go through this write up in the video below.
CodeReady Containers requires the following system resources:
- macOS 10.12 Sierra or newer
- 4 virtual CPUs (vCPUs)
- 9 GB of free memory
- 35 GB of storage space
You also need a Red Hat Network (RHN) account in order to access the OpenShift Cluster Manager on cloud.redhat.com. You will need a pull-secret from there later in the steps. RHN accounts are free, so if you don't have one, you just need to register.
Open the terminal app to get started.
On macOS, we will use hyperkit as the hypervisor. I also installed wget to make it easy to download some of the needed artifacts.
Now let's create a directory to work in and clone the ocp-install-demo git repository.
We can now run the init.sh script that is in the repository. The truth is that the script would check for hyperkit and let you know if you didn't have it installed. It also has checks for other items that are required.
See the failure there is telling me that I need to download, unpack and add the OpenShift CLI tools (oc and kubectl) to my path for finding executables. I can do this very simply using wget, tar and by making a few symbolic links.
Now if we rerun the init.sh script, we will see that I have another artifact to download, unpack and add to my path.
This time the message is telling me that I need to download the CRC package.
Rerun the init.sh script again, we will see that I get further, but I need 1 last item. With OpenShift 4 installations, you need a pull secret. This pull secret is unique for your Red Hat Network account. Your pull secret file can be downloaded from cloud.redhat.com OpenShift Cluster Manager.
Visit https://cloud.redhat.com/openshift/install/crc/installer-provisioned and click the 'Download pull secret' button. Once it's download move it to the ocp-install-demo directory.
Now we need to do a quick edit to the init.sh script to point to the pull secret file. You can use whatever text editor you are comfortable with. I'm using vi here (and in the video). If you don't know vi, nano might be a better option.
Once you save the file with the SECRET_PATH set to point to your pull-secret.txt file, we can rerun the init.sh. You could certainly take care of all of these 4 items without rerunning the script. I wanted to show how the script does some checks to make sure all of the pieces are in place on the system.
You need to answer y and hit enter to allow use of the insecure connection. Don't worry. CRC uses self-signed certificates, and this is a security check to let you know that the self-signed cert isn't trusted by the system. This is fine for our development use case.
Once the install is complete, you will see an output like below with instructions to connect.
You can now just use the crc command line tool directly. You should check the status of your CRC instance to see if the VM is in running state and the OpenShift cluster is in running state.
You can run the crc console command to open a browser tab (using your default browser) to bring up the OpenShift console.
There are several repositories on Red Hat Demo Central to deploy on your new CRC OpenShift 4 environment.
Go to https://gitlab.com/redhatdemocentral and try some out.
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Here we've compiled the top 5 PDF editor Mac tools to work with your PDFs efficiently. We've found the best 5 free PDF editor for Mac to help you modify your files, including tools like PDFelement Pro for Mac.
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1. PDFelement Pro-Clean and Powerful PDF Editor
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PDFelement Pro is one of the best programs for all solutions to edit PDF files on Mac. With this tool, you can edit, add, modify, and delete texts, graphics, and images in PDF format. You can also convert your PDF files to Word, Excel, EPUB, Images, and more formats. You can annotate and mark all the screen content with a variety of markup and annotation tools. It allows you to fill out your existing PDF forms, creates PDFs, and extract data from PDFs forms. The advanced OCR feature helps you to edit and convert scanned PDF and remove data from scanned PDF.
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2. PDF Expert - Beautiful and Robust PDF editor
PDF Expert by Readdle is a start product in the Mac App Store. It has been rewarded as 'Editors' Choice,' 'App of the Year' and 'Top 1 Paid App'. It provides advanced reading experience on Mac. The cool thing is that you can compare two PDF files in the 'split view mode.' You can also mark up while reading. PDF Expert also provides tools to combine PDFs. Add, remove, extract, rotate, copy, and reorder pages to make your PDF files' best arrangement. Fill out PDF forms and sign electronically.
3. Adobe® Acrobat® DC Mac - Powerful but Expensive Choice
As the leading brand in the PDF industry, the PDF editor of Adobe® Acrobat® is no doubt with reliable quality. From the product interface, we can see, it has a wide range of toolset. You can edit, comment, fill&sign, convert, combine, and secure PDFs. With the help of Action Wizard, Pro users can customize an action and run it so that you can deal with piles of PDFs with the same story. It is also integrated with Adobe Sign. If you have an Adobe suite already and enough budget, then Acrobat DC is a better choice.
4. Foxit PhantomPDF Mac - New Product by Old Brand
Foxit published PhantomPDF Mac in recent years. Been dedicated to Windows solution of PDF for years, it's Mac version deserves a trial. This PDF editor mac allows you to edit text, convert, annotate, compress, OCR, and sign PDFs. You can also fill out forms and protect PDFs with a password.
5. PDFpen Pro
PDFpen Pro is an all-purpose PDF editor for mac. You can edit, mark up, OCR, and protect PDF and create PDF forms. Edit text and images, annotate PDFs with the highlight, notes, and hand-drawings. OCR scanned PDFs into editable text. There's also a redaction option that can black out your sensitive information.
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6. Preview - Mac Built-in Markup Tool
Preview is a light-weighted PDF annotation tool, which is built-in on Mac. You can add text, notes, shapes, and highlighting to jot down your thoughts and compress, convert and combine PDFs. It also allows you to organize pages like add, delete, and move. To protect your PDF documents, you can add a password. However, it has fewer features compared with professional pdf editors on Mac. It doesn't support batch process and OCR. The most important is that it can't edit existing text in a PDF. Therefore, it's the only suitable for those who only want to mark up PDF files. If you are looking for PDF editing software on Mac, it is not your choice.
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7. Adobe Reader DC
Adobe Reader DC is a free PDF reader on Mac. As its name conveys, it only allows you to view, comment, and sign PDFs. If you want to enjoy the editing feature, you need to upgrade to Adobe Acrobat DC.
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8. FineReader Pro for Mac
FineReader Pro for Mac is an OCR product from ABBYY, a leading company in the OCR area. The highlight of the program is converting scanned PDFs with great accuracy. If you often deal with scanned files, then FineReader Pro for Mac is your best Choice. You can convert those documents into editable formats like Docx, xlsx, pptx, and more.
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9. PDF Editor Mac
PDF Editor Mac is a free pdf editor mac from the individual developer. Although it may not have a beautiful interface and is not intuitive, it has the standard features for light users. You can edit, rotate and annotate PDF documents.
This software is a free PDF annotation and reader for Mac that allows you to make several modifications. It lets you perform tasks such as highlighting, underlining, and adding sticky notes to better view PDFs.