Notes

I have this old PC Dell Inspiron 1525 with 2GB RAM and 32 bit dual core processor and I wanted to install fedora on it, but I cam accross few problems which I am documenting for further reference. Wifi device not detected The wifi drivers are not loaded by default, so followed this blog, basically do following: export FIRMWARE_INSTALL_DIR="/lib/firmware" wget http://mirror2.openwrt.org/sources/broadcom-wl-5.100.138.tar.bz2 tar xjf broadcom-wl-5.100.138.tar.bz2 cd broadcom-wl-5.100.138/linux/ sudo b43-fwcutter -w /lib/firmware wl_apsta.o Slow boot problem Since the boot process is very slow so add this line to /etc/default/grub ...

It’s always a hassle creating certificates and lot of technical jargons involved. This can be simplified, using mkcert. Install by following one of the steps mentioned in the docs. Once installed just run: $ mkcert -install Created a new local CA at "/home/hummer/.local/share/mkcert" 💥 [sudo] password for hummer: The local CA is now installed in the system trust store! ⚡ The local CA is now installed in the Firefox and/or Chrome/Chromium trust store (requires browser restart)! 🦊 This has installed the local CA. Now all you need to do is create a new certificate. ...

This post has shortcuts that are generic and golang specific as well. This post will edited from time to time. Shortcuts Toggle side bar Ctrl + B Project explorer in side bar Ctrl + Shift + E Project wide search in side bar Ctrl + Shift + F Source control in side bar Ctrl + Shift + G Copy entire line Ctrl + C (without any selection) Delete entire line Ctrl + Shift + K ...

I wanted to try out Standalone Kubelet Tutorial of Kelsey Hightower by myself but I could not follow it as it is, because it was firstly on GCE and secondly it uses CoreOS, but since I am very familiar to Fedora I thought of following that tutorial on it. To get a quick setup of a fresh Fedora machine use Vagrant. I have used Vagrantfile available here. This blog is only replacement of section Install the Standalone Kubelet in tutorial. ...

Make sure you have npm installed. $ sudo dnf -y install npm Package npm-1:3.10.10-1.6.10.3.1.fc25.x86_64 is already installed, skipping. Dependencies resolved. Nothing to do. Complete! Taken from this post. mkdir "${HOME}/.npm-packages" echo 'prefix=${HOME}/.npm-packages' | tee -a ~/.npmrc echo ' #====================================== # npm related stuff NPM_PACKAGES="${HOME}/.npm-packages" PATH="$NPM_PACKAGES/bin:$PATH" # Unset manpath so we can inherit from /etc/manpath via the `manpath` command unset MANPATH # delete if you already modified MANPATH elsewhere in your config export MANPATH="$NPM_PACKAGES/share/man:$(manpath)" #====================================== ' | tee -a ~/.bashrc Ref: npm throws error without sudo - Stack Overflow question Install npm packages globally without sudo on macOS and Linux

I do lot of Kubernetes related work either on minikube or local OpenShift cluster setup in a VM. Often I need to create a PersistentVolumeClaim a.k.a. pvc. But to use pvc you have to have a PersistentVolume or pv defined. Enter into the machine running k8s If using minikube you can do minikube ssh Create a local directory for storage mkdir /tmp/pv0001 chmod 777 /tmp/pv0001 If you are on a machine that has SELinux enabled do the following ...

Here is a single node Kubernetes on CRI-O. This setup is done on Fedora 25. Installing OS dependencies dnf -y install \ go \ git \ btrfs-progs-devel \ device-mapper-devel \ glib2-devel \ glibc-devel \ glibc-static \ gpgme-devel \ libassuan-devel \ libgpg-error-devel \ libseccomp-devel \ libselinux-devel \ pkgconfig \ wget \ etcd \ iptables Creating go environment cd ~ mkdir -p ~/go export GOPATH=~/go export GOBIN=$GOPATH/bin export PATH=$PATH:$GOBIN echo 'GOPATH=~/go' >> ~/.bashrc echo 'GOBIN=$GOPATH/bin' >> ~/.bashrc echo 'PATH=$PATH:$GOBIN' >> ~/.bashrc Pull all the code dependencies go get -d k8s.io/kubernetes go get -u github.com/cloudflare/cfssl/cmd/... Install runc go get -d github.com/opencontainers/runc cd $GOPATH/src/github.com/opencontainers/runc git reset --hard v1.0.0-rc3 make BUILDTAGS='seccomp selinux' && make install Build cri-o cd go get -d github.com/kubernetes-incubator/cri-o cd $GOPATH/src/github.com/kubernetes-incubator/cri-o make install.tools make && make install make install.config Set up CNI go get -d github.com/containernetworking/cni cd $GOPATH/src/github.com/containernetworking/cni ./build.sh mkdir -p /opt/cni/bin cp bin/* /opt/cni/bin/ mkdir -p /etc/cni/net.d/ cat > /etc/cni/net.d/10-ocid-bridge.conf <<EOF { "cniVersion": "0.2.0", "name": "ocid-bridge", "type": "bridge", "bridge": "cni0", "isGateway": true, "ipMasq": true, "ipam": { "type": "host-local", "subnet": "10.88.0.0/16", "routes": [ { "dst": "0.0.0.0/0" } ] } } EOF cat > /etc/cni/net.d/99-loopback.conf <<EOF { "cniVersion": "0.2.0", "type": "loopback" } EOF Create policy.json mkdir -p /etc/containers cat > /etc/containers/policy.json <<EOF { "default": [ { "type": "insecureAcceptAnything" } ] } EOF Make SELinux happy mkdir -p /var/lib/containers/ chcon -Rt svirt_sandbox_file_t /var/lib/containers/ Start ocid service export PATH=$PATH:/usr/local/bin/ echo 'PATH=$PATH:/usr/local/bin/' >> ~/.bashrc ocid --runtime /usr/local/sbin/runc --log /root/ocid.log --debug --selinux true Start k8s cluster with crio cd $GOPATH/src/k8s.io/kubernetes/ CONTAINER_RUNTIME=remote CONTAINER_RUNTIME_ENDPOINT='/var/run/ocid.sock --runtime-request-timeout=15m' ./hack/local-up-cluster.sh To use kubectl (in new terminal) ...

This post will get you through all the steps needed for doing RPM packaging. Setup of the system for building rpms $ dnf -y install fedora-packager fedora-review $ sudo usermod -a -G mock vagrant $ fedora-packager-setup $ kinit surajd@FEDORAPROJECT.ORG My Notes Start reading from: Fedora packager’s guide Some macros come from redhat-rpm-config and fedora-rpm-macros. $ sudo rpm -ql redhat-rpm-config-45-1.fc25.noarch To see all macros on the system: $ rpm --showrc Koji - fedora build system fedora uses fedpkg for doing builds, while rpmbuild is for CentOS To get general info about the package $ rpm -qip ./x86_64/namaskar-1-1.fc25.x86_64.rpm OR ...

Note: This is a living document and will be updated as I discover new things. Shortcuts Ctrl + Shift + A Find any action in IDE Ctrl + Shift + F Find in Path Alt + 1 Open project navigator. You can search here, just start typing here, after the project navigator window is opened. Shift + Insert in Project window Here you can add new file to the project. The filename could be the entire path, so the intermediate directories will be created for you. ...

Note: This is a living document and will be updated from time to time. Following are steps to package kompose for CentOS PAAS SIG. CentOS PAAS SIG is a repository of packages where rpms related to OpenShift and eco-system around it are delivered. Setup your machine Install packages needed sudo yum update -y && \ sudo yum install -y epel-release && \ sudo yum install -y rpm-build go redhat-rpm-config make koji \ gcc byobu rpmlint rpmdevtools centos-packager Setup certs ...