K3s deploy on Rpis -- Rancher will live in Node

2026-08-05 16:38:28 -05:00
parent 311eb69d33
commit 08f5a533df
9 changed files with 1572 additions and 6 deletions
@@ -0,0 +1,213 @@
+#!/bin/bash
+
+# Downloaded via `curl -sfL https://get.rancher.io`
+
+set -e
+
+if [ "${DEBUG}" = 1 ]; then
+    set -x
+fi
+
+# Usage:
+#   curl ... | ENV_VAR=... sh -
+#       or
+#   ENV_VAR=... ./install.sh
+#
+# Environment variables:
+#
+#   - INSTALL_RANCHERD_CHANNEL
+#     Channel to use for fetching RANCHERD download URL.
+#     Defaults to 'testing'.
+#
+#   - INSTALL_RANCHERD_TYPE
+#     Type of RANCHERD service. Can be either "server" or "agent".
+#     Default is "server".
+#
+#   - INSTALL_RANCHERD_VERSION
+#     Version of RANCHERD to download from github.
+#
+# info logs the given argument at info log level.
+info() {
+    echo "[INFO] " "$@"
+}
+
+# warn logs the given argument at warn log level.
+warn() {
+    echo "[WARN] " "$@" >&2
+}
+
+# fatal logs the given argument at fatal log level.
+fatal() {
+    echo "[ERROR] " "$@" >&2
+    if [ -n "${SUFFIX}" ]; then
+        echo "[ALT] Please visit 'https://github.com/rancher/rancher/releases' directly and download the latest rancherd-installer.${SUFFIX}.run" >&2
+    fi
+    exit 1
+}
+
+# setup_env defines needed environment variables.
+setup_env() {
+    INSTALL_RANCHERD_GITHUB_URL="https://github.com/rancher/rancher"
+    # --- bail if we are not root ---
+    if [ ! $(id -u) -eq 0 ]; then
+        fatal "You need to be root to perform this install"
+    fi
+
+    # --- make sure install channel has a value
+    if [ -z "${INSTALL_RANCHERD_CHANNEL}" ]; then
+        INSTALL_RANCHERD_CHANNEL="v2.5"
+    fi
+
+    # --- make sure install type has a value
+    if [ -z "${INSTALL_RANCHERD_TYPE}" ]; then
+        INSTALL_RANCHERD_TYPE="server"
+    fi
+}
+
+# setup_arch set arch and suffix,
+# fatal if architecture not supported.
+setup_arch() {
+    case ${ARCH:=$(uname -m)} in
+    amd64)
+        ARCH=amd64
+        SUFFIX=${ARCH}
+        ;;
+    x86_64)
+        ARCH=amd64
+        SUFFIX=${ARCH}
+        ;;
+    *)
+        fatal "unsupported architecture ${ARCH}"
+        ;;
+    esac
+}
+
+# verify_downloader verifies existence of
+# network downloader executable.
+verify_downloader() {
+    cmd="$(command -v "${1}")"
+    if [ -z "${cmd}" ]; then
+        return 1
+    fi
+    if [ ! -x "${cmd}" ]; then
+        return 1
+    fi
+
+    # Set verified executable as our downloader program and return success
+    DOWNLOADER=${cmd}
+    return 0
+}
+
+# setup_tmp creates a temporary directory
+# and cleans up when done.
+setup_tmp() {
+    TMP_DIR=$(mktemp -d -t rancherd-install.XXXXXXXXXX)
+    TMP_CHECKSUMS=${TMP_DIR}/rancherd.checksums
+    TMP_TARBALL=${TMP_DIR}/rancherd.tarball
+    cleanup() {
+        code=$?
+        set +e
+        trap - EXIT
+        rm -rf "${TMP_DIR}"
+        exit $code
+    }
+    trap cleanup INT EXIT
+}
+
+# --- use desired rancherd version if defined or find version from channel ---
+get_release_version() {
+    if [ -n "${INSTALL_RANCHERD_VERSION}" ]; then
+        version=${INSTALL_RANCHERD_VERSION}
+    else
+        info "finding release for channel ${INSTALL_RANCHERD_CHANNEL}"
+        INSTALL_RANCHERD_CHANNEL_URL=${INSTALL_RANCHERD_CHANNEL_URL:-'https://update.rancher.io/v1-release/channels'}
+        version_url="${INSTALL_RANCHERD_CHANNEL_URL}/${INSTALL_RANCHERD_CHANNEL}"
+        case ${DOWNLOADER} in
+        *curl)
+            version=$(${DOWNLOADER} -w "%{url_effective}" -L -s -S ${version_url} -o /dev/null | sed -e 's|.*/||')
+            ;;
+        *wget)
+            version=$(${DOWNLOADER} -SqO /dev/null ${version_url} 2>&1 | grep -i Location | sed -e 's|.*/||')
+            ;;
+        *)
+            fatal "Unsupported downloader executable '${DOWNLOADER}'"
+            ;;
+        esac
+        INSTALL_RANCHERD_VERSION="${version}"
+    fi
+    info "using ${INSTALL_RANCHERD_VERSION} as release"
+}
+
+# download downloads from github url.
+download() {
+    if [ $# -ne 2 ]; then
+        fatal "download needs exactly 2 arguments"
+    fi
+
+    case ${DOWNLOADER} in
+    *curl)
+        curl -o "$1" -fsSL "$2"
+        ;;
+    *wget)
+        wget -qO "$1" "$2"
+        ;;
+    *)
+        fatal "downloader executable not supported: '${DOWNLOADER}'"
+        ;;
+    esac
+
+    # Abort if download command failed
+    if [ $? -ne 0 ]; then
+        fatal "download failed"
+    fi
+}
+
+# download_checksums downloads hash from github url.
+download_checksums() {
+
+    CHECKSUMS_URL=${INSTALL_RANCHERD_GITHUB_URL}/releases/download/${INSTALL_RANCHERD_VERSION}/sha256sum.txt
+    info "downloading checksums at ${CHECKSUMS_URL}"
+    download "${TMP_CHECKSUMS}" "${CHECKSUMS_URL}"
+    CHECKSUM_EXPECTED=$(grep "rancherd.${SUFFIX}.tar.gz" "${TMP_CHECKSUMS}" | awk '{print $1}')
+}
+
+# download_tarball downloads binary from github url.
+download_tarball() {
+    TARBALL_URL=${INSTALL_RANCHERD_GITHUB_URL}/releases/download/${INSTALL_RANCHERD_VERSION}/rancherd-${SUFFIX}.tar.gz
+    info "downloading tarball at ${TARBALL_URL}"
+    download "${TMP_TARBALL}" "${TARBALL_URL}"
+}
+
+# verify_tarball verifies the downloaded installer checksum.
+verify_tarball() {
+    info "verifying installer"
+    CHECKSUM_ACTUAL=$(sha256sum "${TMP_TARBALL}" | awk '{print $1}')
+    if [ "${CHECKSUM_EXPECTED}" != "${CHECKSUM_ACTUAL}" ]; then
+        fatal "download sha256 does not match ${CHECKSUM_EXPECTED}, got ${CHECKSUM_ACTUAL}"
+    fi
+}
+
+unpack_tarball() {
+    info "unpacking tarball file"
+    mkdir -p /usr/local
+    tar xzf $TMP_TARBALL -C /usr/local
+}
+
+do_install_tar() {
+    verify_downloader curl || verify_downloader wget || fatal "can not find curl or wget for downloading files"
+    setup_tmp
+    get_release_version
+    download_checksums
+    download_tarball
+    verify_tarball
+    unpack_tarball
+}
+
+do_install() {
+    setup_env
+    setup_arch
+    do_install_tar
+}
+
+do_install
+exit 0