2022-03-13 12:29:53 +00:00
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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rke2_channel="$1"; shift
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rke2_version="$1"; shift
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rke2_server_url="$1"; shift
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ip_address="$1"; shift
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cat >/etc/motd <<'EOF'
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_ ____ _
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_ __| | _____|___ \ __ _ __ _ ___ _ __ | |_
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| '__| |/ / _ \ __) | / _` |/ _` |/ _ \ '_ \| __|
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| | | < __// __/ | (_| | (_| | __/ | | | |_
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|_| |_|\_\___|_____(_)__,_|\__, |\___|_| |_|\__|
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|___/
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EOF
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2022-10-09 17:59:09 +00:00
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h1 "Install NFS libs"
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apt-get install -y nfs-common
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2022-03-13 12:29:53 +00:00
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h1 "Install rke2 agent"
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h2 "Version: ${rke2_version}"
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h2 "Server: ${rke2_server_url}"
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# install rke2 agent.
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# see https://docs.rke2.io/install/install_options/install_options/
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# see https://docs.rke2.io/install/install_options/linux_agent_config/
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install -d -m 700 /etc/rancher/rke2
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install /dev/null -m 600 /etc/rancher/rke2/config.yaml
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cat >>/etc/rancher/rke2/config.yaml <<EOF
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server: $rke2_server_url
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token: $(cat /vagrant/tmp/node-token)
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node-ip: $ip_address
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EOF
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curl -sfL https://raw.githubusercontent.com/rancher/rke2/$rke2_version/install.sh \
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| \
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INSTALL_RKE2_CHANNEL="$rke2_channel" \
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INSTALL_RKE2_VERSION="$rke2_version" \
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INSTALL_RKE2_TYPE="agent" \
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sh -
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h2 "Start rke2 agent service"
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systemctl cat rke2-agent
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systemctl enable rke2-agent.service
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systemctl start rke2-agent.service
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h2 "Configure system path for rke2"
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# symlink the utilities and setup the environment variables to use them.
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# NB kubectl should not be available in worker nodes as rke2 does not
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# install a kubeconfig.
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ln -fs /var/lib/rancher/rke2/bin/{kubectl,crictl,ctr} /usr/local/bin/
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cat >/etc/profile.d/01-rke2.sh <<'EOF'
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export CONTAINERD_ADDRESS=/run/k3s/containerd/containerd.sock
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export CONTAINERD_NAMESPACE=k8s.io
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export CRI_CONFIG_FILE=/var/lib/rancher/rke2/agent/etc/crictl.yaml
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EOF
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source /etc/profile.d/01-rke2.sh
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# NB do not try to use kubectl on a agent node, as kubectl does not work on a
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# agent node without a proper kubectl configuration (which you could copy
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# from the server, but we do not do it here).
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# install the bash completion scripts.
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h2 "Bash configure"
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crictl completion bash >/usr/share/bash-completion/completions/crictl
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kubectl completion bash >/usr/share/bash-completion/completions/kubectl
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# list runnnig pods.
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crictl pods
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# list running containers.
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crictl ps
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ctr containers ls
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# show listening ports.
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ss -n --tcp --listening --processes
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# show network routes.
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ip route
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# show memory info.
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free
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# show versions.
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crictl version
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ctr version
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