mirror of https://github.com/k3s-io/k3s
Minion->Name rename: cluster/vagrant, docs and Vagrantfile
Brad Erickson
parent
224aebd2be
commit
88e6cac544
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@ -17,13 +17,13 @@ Calling 'vagrant up' directly is not supported. Instead, please run the followi
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END
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end
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# The number of minions to provision
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$num_minion = (ENV['NUM_NODES'] || 1).to_i
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# The number of nodes to provision
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$num_node = (ENV['NUM_NODES'] || 1).to_i
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# ip configuration
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$master_ip = ENV['MASTER_IP']
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$minion_ip_base = ENV['NODE_IP_BASE'] || ""
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$minion_ips = $num_minion.times.collect { |n| $minion_ip_base + "#{n+3}" }
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$node_ip_base = ENV['NODE_IP_BASE'] || ""
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$node_ips = $num_node.times.collect { |n| $node_ip_base + "#{n+3}" }
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# Determine the OS platform to use
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$kube_os = ENV['KUBERNETES_OS'] || "fedora"
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@ -105,7 +105,7 @@ end
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# When doing Salt provisioning, we copy approximately 200MB of content in /tmp before anything else happens.
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# This causes problems if anything else was in /tmp or the other directories that are bound to tmpfs device (i.e /run, etc.)
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$vm_master_mem = (ENV['KUBERNETES_MASTER_MEMORY'] || ENV['KUBERNETES_MEMORY'] || 1280).to_i
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$vm_minion_mem = (ENV['KUBERNETES_NODE_MEMORY'] || ENV['KUBERNETES_MEMORY'] || 1024).to_i
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$vm_node_mem = (ENV['KUBERNETES_NODE_MEMORY'] || ENV['KUBERNETES_MEMORY'] || 1024).to_i
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Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
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def setvmboxandurl(config, provider)
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@ -221,21 +221,21 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
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c.vm.network "private_network", ip: "#{$master_ip}"
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end
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# Kubernetes minion
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$num_minion.times do |n|
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minion_vm_name = "minion-#{n+1}"
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minion_prefix = ENV['INSTANCE_PREFIX'] || 'kubernetes' # must mirror default in cluster/vagrant/config-default.sh
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minion_hostname = "#{minion_prefix}-#{minion_vm_name}"
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# Kubernetes node
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$num_node.times do |n|
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node_vm_name = "node-#{n+1}"
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node_prefix = ENV['INSTANCE_PREFIX'] || 'kubernetes' # must mirror default in cluster/vagrant/config-default.sh
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node_hostname = "#{node_prefix}-#{node_vm_name}"
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config.vm.define minion_vm_name do |minion|
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customize_vm minion, $vm_minion_mem
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config.vm.define node_vm_name do |node|
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customize_vm node, $vm_node_mem
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minion_ip = $minion_ips[n]
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node_ip = $node_ips[n]
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if ENV['KUBE_TEMP'] then
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script = "#{ENV['KUBE_TEMP']}/minion-start-#{n}.sh"
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minion.vm.provision "shell", run: "always", path: script
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script = "#{ENV['KUBE_TEMP']}/node-start-#{n}.sh"
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node.vm.provision "shell", run: "always", path: script
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end
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minion.vm.network "private_network", ip: "#{minion_ip}"
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node.vm.network "private_network", ip: "#{node_ip}"
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end
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end
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end
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@ -10,6 +10,6 @@ This is a work-in-progress; not all options are documented yet!
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**NUM_NODES**
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The number of minion instances to create. Most providers default this to 4.
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The number of node instances to create. Most providers default this to 4.
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[]()
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@ -16,7 +16,7 @@
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## Contains configuration values for interacting with the Vagrant cluster
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# Number of minions in the cluster
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# Number of nodes in the cluster
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NUM_NODES=${NUM_NODES-"1"}
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export NUM_NODES
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@ -30,7 +30,7 @@ export MASTER_NAME="${INSTANCE_PREFIX}-master"
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# Should the master serve as a node
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REGISTER_MASTER_KUBELET=${REGISTER_MASTER:-false}
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# Map out the IPs, names and container subnets of each minion
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# Map out the IPs, names and container subnets of each node
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export NODE_IP_BASE=${NODE_IP_BASE-"10.245.1."}
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NODE_CONTAINER_SUBNET_BASE="10.246"
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MASTER_CONTAINER_NETMASK="255.255.255.0"
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@ -39,11 +39,11 @@ MASTER_CONTAINER_SUBNET="${NODE_CONTAINER_SUBNET_BASE}.0.1/24"
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CONTAINER_SUBNET="${NODE_CONTAINER_SUBNET_BASE}.0.0/16"
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for ((i=0; i < NUM_NODES; i++)) do
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NODE_IPS[$i]="${NODE_IP_BASE}$((i+3))"
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NODE_NAMES[$i]="${INSTANCE_PREFIX}-minion-$((i+1))"
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NODE_NAMES[$i]="${INSTANCE_PREFIX}-node-$((i+1))"
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NODE_CONTAINER_SUBNETS[$i]="${NODE_CONTAINER_SUBNET_BASE}.$((i+1)).1/24"
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NODE_CONTAINER_ADDRS[$i]="${NODE_CONTAINER_SUBNET_BASE}.$((i+1)).1"
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NODE_CONTAINER_NETMASKS[$i]="255.255.255.0"
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VAGRANT_NODE_NAMES[$i]="minion-$((i+1))"
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VAGRANT_NODE_NAMES[$i]="node-$((i+1))"
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done
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SERVICE_CLUSTER_IP_RANGE=10.247.0.0/16 # formerly PORTAL_NET
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@ -58,46 +58,46 @@ cd "${KUBE_ROOT}"
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echo All verbose output will be redirected to $logfile, use --logfile option to change.
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printf "Start the cluster with 2 minions .. "
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printf "Start the cluster with 2 nodes .. "
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export NUM_NODES=2
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export KUBERNETES_PROVIDER=vagrant
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(cluster/kube-up.sh >>"$logfile" 2>&1) || true
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echoOK $?
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printf "Check if minion-1 can reach kubernetes master .. "
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vagrant ssh minion-1 -- ping -c 10 kubernetes-master >>"$logfile" 2>&1
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printf "Check if node-1 can reach kubernetes master .. "
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vagrant ssh node-1 -- ping -c 10 kubernetes-master >>"$logfile" 2>&1
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echoOK $?
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printf "Check if minion-2 can reach kubernetes master .. "
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vagrant ssh minion-2 -- ping -c 10 kubernetes-master >>"$logfile" 2>&1
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printf "Check if node-2 can reach kubernetes master .. "
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vagrant ssh node-2 -- ping -c 10 kubernetes-master >>"$logfile" 2>&1
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echoOK $?
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printf "Pull an image that runs a web server on minion-1 .. "
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vagrant ssh minion-1 -- 'sudo docker pull kubernetes/serve_hostname' >>"$logfile" 2>&1
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printf "Pull an image that runs a web server on node-1 .. "
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vagrant ssh node-1 -- 'sudo docker pull kubernetes/serve_hostname' >>"$logfile" 2>&1
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echoOK $?
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printf "Pull an image that runs a web server on minion-2 .. "
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vagrant ssh minion-2 -- 'sudo docker pull kubernetes/serve_hostname' >>"$logfile" 2>&1
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printf "Pull an image that runs a web server on node-2 .. "
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vagrant ssh node-2 -- 'sudo docker pull kubernetes/serve_hostname' >>"$logfile" 2>&1
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echoOK $?
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printf "Run the server on minion-1 .. "
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vagrant ssh minion-1 -- sudo docker run -d kubernetes/serve_hostname >>"$logfile" 2>&1
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printf "Run the server on node-1 .. "
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vagrant ssh node-1 -- sudo docker run -d kubernetes/serve_hostname >>"$logfile" 2>&1
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echoOK $?
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printf "Run the server on minion-2 .. "
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vagrant ssh minion-2 -- sudo docker run -d kubernetes/serve_hostname >>"$logfile" 2>&1
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printf "Run the server on node-2 .. "
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vagrant ssh node-2 -- sudo docker run -d kubernetes/serve_hostname >>"$logfile" 2>&1
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echoOK $?
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printf "Run ping from minion-1 to docker bridges and to the containers on both minions .. "
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vagrant ssh minion-1 -- 'ping -c 20 10.246.0.1 && ping -c 20 10.246.1.1 && ping -c 20 10.246.0.2 && ping -c 20 10.246.1.2' >>"$logfile" 2>&1
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printf "Run ping from node-1 to docker bridges and to the containers on both nodes .. "
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vagrant ssh node-1 -- 'ping -c 20 10.246.0.1 && ping -c 20 10.246.1.1 && ping -c 20 10.246.0.2 && ping -c 20 10.246.1.2' >>"$logfile" 2>&1
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echoOK $?
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printf "Same pinch from minion-2 .. "
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vagrant ssh minion-2 -- 'ping -c 20 10.246.0.1 && ping -c 20 10.246.1.1 && ping -c 20 10.246.0.2 && ping -c 20 10.246.1.2' >>"$logfile" 2>&1
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printf "Same pinch from node-2 .. "
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vagrant ssh node-2 -- 'ping -c 20 10.246.0.1 && ping -c 20 10.246.1.1 && ping -c 20 10.246.0.2 && ping -c 20 10.246.1.2' >>"$logfile" 2>&1
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echoOK $?
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printf "tcp check, curl to both the running webservers from minion-1 .. "
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vagrant ssh minion-1 -- 'curl -sS 10.246.0.2:9376 && curl -sS 10.246.1.2:9376' >>"$logfile" 2>&1
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printf "tcp check, curl to both the running webservers from node-1 .. "
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vagrant ssh node-1 -- 'curl -sS 10.246.0.2:9376 && curl -sS 10.246.1.2:9376' >>"$logfile" 2>&1
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echoOK $?
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printf "tcp check, curl to both the running webservers from minion-2 .. "
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vagrant ssh minion-2 -- 'curl -sS 10.246.0.2:9376 && curl -sS 10.246.1.2:9376' >>"$logfile" 2>&1
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printf "tcp check, curl to both the running webservers from node-2 .. "
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vagrant ssh node-2 -- 'curl -sS 10.246.0.2:9376 && curl -sS 10.246.1.2:9376' >>"$logfile" 2>&1
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echoOK $?
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printf "All good, destroy the cluster .. "
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@ -48,13 +48,13 @@ function release_not_found() {
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exit 1
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}
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# Setup hosts file to support ping by hostname to each minion in the cluster from apiserver
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# Setup hosts file to support ping by hostname to each node in the cluster from apiserver
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for (( i=0; i<${#NODE_NAMES[@]}; i++)); do
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minion=${NODE_NAMES[$i]}
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node=${NODE_NAMES[$i]}
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ip=${NODE_IPS[$i]}
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if [ ! "$(cat /etc/hosts | grep $minion)" ]; then
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echo "Adding $minion to hosts file"
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echo "$ip $minion" >> /etc/hosts
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if [ ! "$(cat /etc/hosts | grep $node)" ]; then
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echo "Adding $node to hosts file"
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echo "$ip $node" >> /etc/hosts
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fi
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done
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echo "127.0.0.1 localhost" >> /etc/hosts # enables cmds like 'kubectl get pods' on master.
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@ -14,10 +14,10 @@
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# provision-network-minion configures flannel on the minion
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function provision-network-minion {
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# provision-network-node configures flannel on the node
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function provision-network-node {
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echo "Provisioning network on minion"
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echo "Provisioning network on node"
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FLANNEL_ETCD_URL="http://${MASTER_IP}:4379"
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@ -46,18 +46,18 @@ if [ ! "$(cat /etc/hosts | grep $MASTER_NAME)" ]; then
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fi
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echo "$NODE_IP $NODE_NAME" >> /etc/hosts
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# Setup hosts file to support ping by hostname to each minion in the cluster
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# Setup hosts file to support ping by hostname to each node in the cluster
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for (( i=0; i<${#NODE_NAMES[@]}; i++)); do
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minion=${NODE_NAMES[$i]}
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node=${NODE_NAMES[$i]}
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ip=${NODE_IPS[$i]}
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if [ ! "$(cat /etc/hosts | grep $minion)" ]; then
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echo "Adding $minion to hosts file"
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echo "$ip $minion" >> /etc/hosts
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if [ ! "$(cat /etc/hosts | grep $node)" ]; then
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echo "Adding $node to hosts file"
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echo "$ip $node" >> /etc/hosts
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fi
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done
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# Configure network
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provision-network-minion
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provision-network-node
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write-salt-config kubernetes-pool
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@ -25,7 +25,7 @@ function detect-master () {
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echo "KUBE_MASTER_IP: ${KUBE_MASTER_IP}" 1>&2
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}
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# Get minion IP addresses and store in KUBE_NODE_IP_ADDRESSES[]
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# Get node IP addresses and store in KUBE_NODE_IP_ADDRESSES[]
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function detect-nodes {
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echo "Nodes already detected" 1>&2
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KUBE_NODE_IP_ADDRESSES=("${NODE_IPS[@]}")
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@ -114,7 +114,7 @@ function ensure-temp-dir {
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fi
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}
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# Create a set of provision scripts for the master and each of the minions
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# Create a set of provision scripts for the master and each of the nodes
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function create-provision-scripts {
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ensure-temp-dir
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@ -139,9 +139,9 @@ function create-provision-scripts {
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echo "CONTAINER_ADDR='${NODE_CONTAINER_ADDRS[$i]}'"
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echo "CONTAINER_NETMASK='${NODE_CONTAINER_NETMASKS[$i]}'"
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awk '!/^#/' "${KUBE_ROOT}/cluster/vagrant/provision-utils.sh"
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awk '!/^#/' "${KUBE_ROOT}/cluster/vagrant/provision-network-minion.sh"
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awk '!/^#/' "${KUBE_ROOT}/cluster/vagrant/provision-minion.sh"
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) > "${KUBE_TEMP}/minion-start-${i}.sh"
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awk '!/^#/' "${KUBE_ROOT}/cluster/vagrant/provision-network-node.sh"
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awk '!/^#/' "${KUBE_ROOT}/cluster/vagrant/provision-node.sh"
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) > "${KUBE_TEMP}/node-start-${i}.sh"
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done
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}
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@ -211,7 +211,7 @@ function verify-cluster {
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done
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done
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# verify each minion has all required daemons
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# verify each node has all required daemons
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local i
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for (( i=0; i<${#NODE_NAMES[@]}; i++)); do
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echo "Validating ${VAGRANT_NODE_NAMES[$i]}"
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@ -231,12 +231,12 @@ function verify-cluster {
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done
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echo
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echo "Waiting for each minion to be registered with cloud provider"
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echo "Waiting for each node to be registered with cloud provider"
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for (( i=0; i<${#NODE_NAMES[@]}; i++)); do
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local validated="0"
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until [[ "$validated" == "1" ]]; do
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local minions=$("${KUBE_ROOT}/cluster/kubectl.sh" get nodes -o name --api-version=v1)
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validated=$(echo $minions | grep -c "${NODE_NAMES[i]}") || {
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local nodes=$("${KUBE_ROOT}/cluster/kubectl.sh" get nodes -o name --api-version=v1)
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validated=$(echo $nodes | grep -c "${NODE_NAMES[i]}") || {
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printf "."
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sleep 2
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validated="0"
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@ -324,34 +324,34 @@ function test-teardown {
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kube-down
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}
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# Find the minion name based on the IP address
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# Find the node name based on the IP address
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function find-vagrant-name-by-ip {
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local ip="$1"
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local ip_pattern="${NODE_IP_BASE}(.*)"
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# This is subtle. We map 10.245.2.2 -> minion-1. We do this by matching a
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# This is subtle. We map 10.245.2.2 -> node-1. We do this by matching a
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# regexp and using the capture to construct the name.
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[[ $ip =~ $ip_pattern ]] || {
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return 1
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}
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echo "minion-$((${BASH_REMATCH[1]} - 1))"
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echo "node-$((${BASH_REMATCH[1]} - 1))"
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}
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# Find the vagrant machine name based on the host name of the minion
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function find-vagrant-name-by-minion-name {
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# Find the vagrant machine name based on the host name of the node
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function find-vagrant-name-by-node-name {
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local ip="$1"
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if [[ "$ip" == "${INSTANCE_PREFIX}-master" ]]; then
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echo "master"
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return $?
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fi
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local ip_pattern="${INSTANCE_PREFIX}-minion-(.*)"
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local ip_pattern="${INSTANCE_PREFIX}-node-(.*)"
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[[ $ip =~ $ip_pattern ]] || {
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return 1
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}
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echo "minion-${BASH_REMATCH[1]}"
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echo "node-${BASH_REMATCH[1]}"
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}
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@ -362,7 +362,7 @@ function ssh-to-node {
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local machine
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machine=$(find-vagrant-name-by-ip $node) || true
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[[ -n ${machine-} ]] || machine=$(find-vagrant-name-by-minion-name $node) || true
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[[ -n ${machine-} ]] || machine=$(find-vagrant-name-by-node-name $node) || true
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[[ -n ${machine-} ]] || {
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echo "Cannot find machine to ssh to: $1"
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return 1
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@ -47,7 +47,7 @@ Running kubernetes with Vagrant (and VirtualBox) is an easy way to run/test/deve
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### Setup
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By default, the Vagrant setup will create a single master VM (called kubernetes-master) and one node (called kubernetes-minion-1). Each VM will take 1 GB, so make sure you have at least 2GB to 4GB of free memory (plus appropriate free disk space). To start your local cluster, open a shell and run:
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By default, the Vagrant setup will create a single master VM (called kubernetes-master) and one node (called kubernetes-node-1). Each VM will take 1 GB, so make sure you have at least 2GB to 4GB of free memory (plus appropriate free disk space). To start your local cluster, open a shell and run:
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```sh
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cd kubernetes
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@ -74,14 +74,14 @@ To access the master or any node:
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```sh
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vagrant ssh master
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vagrant ssh minion-1
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vagrant ssh node-1
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```
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If you are running more than one nodes, you can access the others by:
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```sh
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vagrant ssh minion-2
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vagrant ssh minion-3
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vagrant ssh node-2
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vagrant ssh node-3
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```
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To view the service status and/or logs on the kubernetes-master:
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@ -101,11 +101,11 @@ $ vagrant ssh master
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To view the services on any of the nodes:
|
||||
|
||||
```console
|
||||
$ vagrant ssh minion-1
|
||||
[vagrant@kubernetes-minion-1] $ sudo systemctl status docker
|
||||
[vagrant@kubernetes-minion-1] $ sudo journalctl -r -u docker
|
||||
[vagrant@kubernetes-minion-1] $ sudo systemctl status kubelet
|
||||
[vagrant@kubernetes-minion-1] $ sudo journalctl -r -u kubelet
|
||||
$ vagrant ssh node-1
|
||||
[vagrant@kubernetes-node-1] $ sudo systemctl status docker
|
||||
[vagrant@kubernetes-node-1] $ sudo journalctl -r -u docker
|
||||
[vagrant@kubernetes-node-1] $ sudo systemctl status kubelet
|
||||
[vagrant@kubernetes-node-1] $ sudo journalctl -r -u kubelet
|
||||
```
|
||||
|
||||
### Interacting with your Kubernetes cluster with Vagrant.
|
||||
|
|
@ -139,9 +139,9 @@ You may need to build the binaries first, you can do this with `make`
|
|||
$ ./cluster/kubectl.sh get nodes
|
||||
|
||||
NAME LABELS STATUS
|
||||
kubernetes-minion-0whl kubernetes.io/hostname=kubernetes-minion-0whl Ready
|
||||
kubernetes-minion-4jdf kubernetes.io/hostname=kubernetes-minion-4jdf Ready
|
||||
kubernetes-minion-epbe kubernetes.io/hostname=kubernetes-minion-epbe Ready
|
||||
kubernetes-node-0whl kubernetes.io/hostname=kubernetes-node-0whl Ready
|
||||
kubernetes-node-4jdf kubernetes.io/hostname=kubernetes-node-4jdf Ready
|
||||
kubernetes-node-epbe kubernetes.io/hostname=kubernetes-node-epbe Ready
|
||||
```
|
||||
|
||||
### Interacting with your Kubernetes cluster with the `kube-*` scripts.
|
||||
|
|
@ -206,9 +206,9 @@ Your cluster is running, you can list the nodes in your cluster:
|
|||
$ ./cluster/kubectl.sh get nodes
|
||||
|
||||
NAME LABELS STATUS
|
||||
kubernetes-minion-0whl kubernetes.io/hostname=kubernetes-minion-0whl Ready
|
||||
kubernetes-minion-4jdf kubernetes.io/hostname=kubernetes-minion-4jdf Ready
|
||||
kubernetes-minion-epbe kubernetes.io/hostname=kubernetes-minion-epbe Ready
|
||||
kubernetes-node-0whl kubernetes.io/hostname=kubernetes-node-0whl Ready
|
||||
kubernetes-node-4jdf kubernetes.io/hostname=kubernetes-node-4jdf Ready
|
||||
kubernetes-node-epbe kubernetes.io/hostname=kubernetes-node-epbe Ready
|
||||
```
|
||||
|
||||
Now start running some containers!
|
||||
|
|
@ -245,11 +245,11 @@ my-nginx-kqdjk 1/1 Waiting 0 33s
|
|||
my-nginx-nyj3x 1/1 Waiting 0 33s
|
||||
```
|
||||
|
||||
You need to wait for the provisioning to complete, you can monitor the minions by doing:
|
||||
You need to wait for the provisioning to complete, you can monitor the nodes by doing:
|
||||
|
||||
```console
|
||||
$ sudo salt '*minion-1' cmd.run 'docker images'
|
||||
kubernetes-minion-1:
|
||||
$ sudo salt '*node-1' cmd.run 'docker images'
|
||||
kubernetes-node-1:
|
||||
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
|
||||
<none> <none> 96864a7d2df3 26 hours ago 204.4 MB
|
||||
kubernetes/pause latest 6c4579af347b 8 weeks ago 239.8 kB
|
||||
|
|
@ -258,8 +258,8 @@ kubernetes-minion-1:
|
|||
Once the docker image for nginx has been downloaded, the container will start and you can list it:
|
||||
|
||||
```console
|
||||
$ sudo salt '*minion-1' cmd.run 'docker ps'
|
||||
kubernetes-minion-1:
|
||||
$ sudo salt '*node-1' cmd.run 'docker ps'
|
||||
kubernetes-node-1:
|
||||
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
|
||||
dbe79bf6e25b nginx:latest "nginx" 21 seconds ago Up 19 seconds k8s--mynginx.8c5b8a3a--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1.etcd--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1--fcfa837f
|
||||
fa0e29c94501 kubernetes/pause:latest "/pause" 8 minutes ago Up 8 minutes 0.0.0.0:8080->80/tcp k8s--net.a90e7ce4--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1.etcd--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1--baf5b21b
|
||||
|
|
@ -346,7 +346,7 @@ It's very likely you see a build error due to an error in your source files!
|
|||
|
||||
#### I have brought Vagrant up but the nodes won't validate!
|
||||
|
||||
Are you sure you built a release first? Did you install `net-tools`? For more clues, login to one of the nodes (`vagrant ssh minion-1`) and inspect the salt minion log (`sudo cat /var/log/salt/minion`).
|
||||
Are you sure you built a release first? Did you install `net-tools`? For more clues, login to one of the nodes (`vagrant ssh node-1`) and inspect the salt minion log (`sudo cat /var/log/salt/minion`).
|
||||
|
||||
#### I want to change the number of nodes!
|
||||
|
||||
|
|
|
|||
|
|
@ -322,9 +322,9 @@ export KUBERNETES_PROVIDER=vagrant
|
|||
During provision of the cluster, you may see the following message:
|
||||
|
||||
```sh
|
||||
Validating minion-1
|
||||
Validating node-1
|
||||
.............
|
||||
Waiting for each minion to be registered with cloud provider
|
||||
Waiting for each node to be registered with cloud provider
|
||||
error: couldn't read version from server: Get https://10.245.1.2/api: dial tcp 10.245.1.2:443: i/o timeout
|
||||
```
|
||||
|
||||
|
|
@ -334,9 +334,9 @@ To debug, first verify that the master is binding to the proper IP address:
|
|||
|
||||
```
|
||||
$ vagrant ssh master
|
||||
$ ifconfig | grep eth1 -C 2
|
||||
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.245.1.2 netmask
|
||||
255.255.255.0 broadcast 10.245.1.255
|
||||
$ ifconfig | grep eth1 -C 2
|
||||
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.245.1.2 netmask
|
||||
255.255.255.0 broadcast 10.245.1.255
|
||||
```
|
||||
|
||||
Then verify that your host machine has a network connection to a bridge that can serve that address:
|
||||
|
|
|
|||
Loading…
Reference in New Issue