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ELIOT Deployment in X86_64/AMD64 Server with CentOS - 7.5 version.
Pre-Installation steps to be executed on ELIOT Manager and ELIOT Node
Disable SELinux:
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$ setenforce 0 $ sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux |
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b) List and sort specific available in your repo.
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| $ yum install docker-ce --showduplicates | sort -r $ sudo yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io Example : $ yum list docker-ce --showduplicates | sort -r docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable $ sudo yum install docker-ce-18.09.1 docker-ce-cli-18.09.1 containerd.io |
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| $ systemctl start docker && systemctl enable docker $ systemctl start kubelet && systemctl enable kubelet |
Change the cgroup-driver (Need to make sure docker-ce and kubernetes are using same cgroup)
Check docker cgroup
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| $ sed -i 's/cgroup-driver=systemd/cgroup-driver=cgroupfs/g' /etc/systemd/system/kubelet.service.d/10-kubeadm.conf $ systemctl daemon-reload $ systemctl restart kubelet |
Kubernetes Cluster Initialization
Login to ELIOT Manager Server ; Initialize the Kubernetes Master
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| $ mkdir -p $HOME/.kube $ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config $ sudo chown $(id -u):$(id -g) $HOME/.kube/config or (for root user) $ export KUBECONFIG=/etc/kubernetes/admin.conf |
Adding ELIOT Node to the Cluster
Execute the command in the ELIOT Node
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| $ kubeadm join --token <token> <master-ip>:6443 --discovery-token-ca-cert-hash sha256:<hash> [The Kuberadm join command string is displayed after successfull installation of Kubernetes Master (ELIOT Manager)] |
Deploy Flannel network in ELIOT Manager (Kubernetes Cluster)
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| $ kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml |
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| Note : You will get the 'k8s-master' node is running as a 'master' cluster with status 'ready', and you will get all pods that are needed for the cluster, including the 'kube-flannel-ds' for network pod configuration Make sure all kube-system pod status is running. |
ELIOT VM setup on ARM64
This section provides steps about setting the Virtual Machine with Ubuntu OS on ARM64 servers
Environment Details :
- ARM 64 servers with Host OS as Ubuntu 17.10 version.
- QEMU-KVM 2.10
Set up VM on ARM64 servers
Install QEMU-KVM 2.10
(Qemu-kvm is used for creating vms.)
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| $ sudo apt-get install qemu-kvm libvirt-bin |
After qemu-kvm 2.10 is installed successful, install virtinst, followed by qemu-system-arm and qemu-efi
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| $ sudo apt-get install virtinst |
Install QEMU and EFI image for QEMU
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| $ sudo apt-get install qemu-system-arm qemu-efi |
After successfull instalation of qemu-efi, now need to create pflash volumes for UEFI. Two volumes are required, one static one for the UEFI firmware, and another dynamic one to store variables. Both need to be exactly 64M in size
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$ dd if=/dev/zero of=flash0.img bs=1M count=64 |
Set Search Permissions for libvirt:
Change contents of qemu.conf found in below path /etc/libvirt/qemu.conf
uncomment user = "root" and group = "root"
Restart libvirtd
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| $ service libvirtd restart |
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| Note: if you closed the terminal and reopened you need to repeat the previous step once. |
Start QEMU VMs with LIBVIRT:
Download the below image from the internet by executing the below command
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| $ wget http://cdimage.ubuntu.com/releases/16.04/release/ubuntu-16.04.4-server-arm64.iso?_ga=2.265907727.1041693553.1521178200-1580291815.1512480357 |
Rename the ISO file to ubuntu-16.04.4-server-arm64.iso.
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| $ mv ubuntu-16.04.4-server-arm64.iso?_ga=2.265907727.1041693553.1521178200-1580291815.1512480357 ubuntu-16.04.4-server-arm64.iso |
Execute the below command for VM creation:
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$ sudo virt-install --name <VM Name> --ram 8192 --disk path=dut1.img,size=<Storage Space> --vcpus <Number of CPU's> --os-type linux --os-variant generic --cdrom './ubuntu-16.04.4-server-arm64.iso' --network default |
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| Note: In the above command VM name is dut1 , memory = 50 GB and CPUS = 4 After --name attribute will be your VM name. After --ram will be your ram size After --vcpus attribute will be your CPU?s for your VM. After --cdrom attribute within the single quotes will b path for .iso file. (The above step is also suitable with disk image also) Repeat the above step (virt-install) only if you need more than one VM. After creating the VM you can see your IP of your VM by executing command ifconfig. If you unexpectedly closes the terminal before knowing your IP address of VM , execute arp -n in terminal. It will give all the IP addresses of your main machine along with all the VM's you created. |