CentOS – How to Update CentOS 8

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yum --v update on a Fresh install of CentOS 8 at AWS, I get:

Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

A bit of reading shows that CentOS 8 appears to becoming CentOS Stream 8, and all the mirrors are showing that the product is end-of-life: http://mirror.centos.org/centos-8/8/readme

If I open up /etc/yum.repos.d/CentOS-AppStream.repo the url referenced there resolves to: http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=ec2
and that appears to be the cause of the issue above. As it says

'Invalid release/repo/arch combination'

What to do? Is CentOS 7 my only option. I cant find any "CentOS Stream 8" images in AWS.

Best Answer

The URL should be http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=AppStream&infra=ec2, specifically with 8-stream as the release.

There's some other instructions on swapping from non-stream to stream on the official pages here: https://www.centos.org/centos-stream/

Also note that if you're using AWS, then you may want to make use of building AMIs to provide stable images to your environment based on stream. It's easy enough to set up a pipeline to build a base image each week that can then be used for testing and deployment. This can mitigate some of the 'risk' with using a stream-based release.

Related Solutions

Amazon S3 – How to Get the Size of an Amazon S3 Bucket

The AWS CLI now supports the --query parameter which takes a JMESPath expressions.

This means you can sum the size values given by list-objects using sum(Contents[].Size) and count like length(Contents[]).

This can be be run using the official AWS CLI as below and was introduced in Feb 2014

 aws s3api list-objects --bucket BUCKETNAME --output json --query "[sum(Contents[].Size), length(Contents[])]"

CentOS – How to Install Node.js on CentOS

su - 
yum install gcc-c++ openssl-devel
cd /usr/local/src
wget http://nodejs.org/dist/node-latest.tar.gz
tar zxvf node-latest.tar.gz
(cd into extracted folder: ex "cd node-v0.10.3")
./configure
make
make install

Note that this requires Python 2.6+ to use ./configure above. You can modify the "configure" file to point to python2.7 in line 1 if necessary.

To create an RPM package, you can use FPM:

# wget http://nodejs.org/dist/node-latest.tar.gz
# tar zxvf node-latest.tar.gz
(cd into extracted folder: ex "cd node-v0.10.3")
# ./configure --prefix=/usr/
# make
# mkdir /tmp/nodejs
# make install DESTDIR=/tmp/nodejs/
# tree -L 3 /tmp/nodejs/
/tmp/nodejs/
└── usr
    ├── bin
    │   ├── node
    │   ├── node-waf
    │   └── npm -> ../lib/node_modules/npm/bin/npm-cli.js
    ├── include
    │   └── node
    ├── lib
    │   ├── dtrace
    │   ├── node
    │   └── node_modules
    └── share
        └── man

Now make the nodejs package:

# fpm -s dir -t rpm -n nodejs -v 0.8.18 -C /tmp/nodejs/ usr/bin usr/lib

Then install and check the version:

# rpm -ivh nodejs-0.8.18-1.x86_64.rpm 
Preparing...                ########################################### [100%]
   1:nodejs                 ########################################### [100%]

# /usr/bin/node --version
v0.8.18

Source: https://github.com/jordansissel/fpm/wiki/PackageMakeInstall

Best Answer

Related Solutions

Amazon S3 – How to Get the Size of an Amazon S3 Bucket

CentOS – How to Install Node.js on CentOS

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