github
/
k3s
mirror of https://github.com/k3s-io/k3s
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Merge pull request #382 from erikwilson/add-openrc-support 

Add OpenRC support to installer
pull/402/head
Darren Shepherd 6 years ago committed by GitHub
parent
875ba289de fa673468ce
commit
977ba6f512
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 144 additions and 31 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 175
      install.sh

175
install.sh
Unescape View File

@ -22,6 +22,9 @@ set -e
# - INSTALL_K3S_SKIP_DOWNLOAD
# If set to true will not download k3s hash or binary.
#
# - INSTALL_K3S_SKIP_START
# If set to true will not start k3s service.
#
# - INSTALL_K3S_VERSION
# Version of k3s to download from github. Will attempt to download the
# latest version if not specified.
@ -30,6 +33,10 @@ set -e
# Directory to install k3s binary, links, and uninstall script to, or use
# /usr/local/bin as the default
#
# - INSTALL_K3S_BIN_DIR_READ_ONLY
# If set to true will not write files to INSTALL_K3S_BIN_DIR, forces
# setting INSTALL_K3S_SKIP_DOWNLOAD=true
#
# - INSTALL_K3S_SYSTEMD_DIR
# Directory to install systemd service and environment files to, or use
# /etc/systemd/system as the default
@ -68,11 +75,17 @@ fatal()
exit 1
}
# --- fatal if no systemd ---
verify_systemd() {
if [ ! -d /run/systemd ]; then
fatal "Can not find systemd to use as a process supervisor for k3s"
# --- fatal if no systemd or openrc ---
verify_system() {
if [ -x /sbin/openrc-run ]; then
HAS_OPENRC=true
return
fi
if [ -d /run/systemd ]; then
HAS_SYSTEMD=true
return
fi
fatal "Can not find systemd or openrc to use as a process supervisor for k3s"
}
# --- define needed environment variables ---
@ -102,16 +115,16 @@ setup_env() {
# --- use systemd name if defined or create default ---
if [ -n "${INSTALL_K3S_NAME}" ]; then
SYSTEMD_NAME=k3s-${INSTALL_K3S_NAME}
SYSTEM_NAME=k3s-${INSTALL_K3S_NAME}
else
if [ "${CMD_K3S}" = "server" ]; then
SYSTEMD_NAME=k3s
SYSTEM_NAME=k3s
else
SYSTEMD_NAME=k3s-${CMD_K3S}
SYSTEM_NAME=k3s-${CMD_K3S}
fi
fi
SERVICE_K3S=${SYSTEMD_NAME}.service
UNINSTALL_K3S_SH=${SYSTEMD_NAME}-uninstall.sh
SERVICE_K3S=${SYSTEM_NAME}.service
UNINSTALL_K3S_SH=${SYSTEM_NAME}-uninstall.sh
# --- use systemd type if defined or create default ---
if [ -n "${INSTALL_K3S_TYPE}" ]; then
@ -138,11 +151,26 @@ setup_env() {
SYSTEMD_DIR="/etc/systemd/system"
fi
# --- use servive or environment location depending on systemd/openrc ---
if [ "${HAS_SYSTEMD}" = "true" ]; then
FILE_K3S_SERVICE=${SYSTEMD_DIR}/${SERVICE_K3S}
FILE_K3S_ENV=${SYSTEMD_DIR}/${SERVICE_K3S}.env
elif [ "${HAS_OPENRC}" = "true" ]; then
$SUDO mkdir -p /etc/rancher/k3s
FILE_K3S_SERVICE=/etc/init.d/${SYSTEM_NAME}
FILE_K3S_ENV=/etc/rancher/k3s/${SYSTEM_NAME}.env
fi
# --- use sudo if we are not already root ---
SUDO=sudo
if [ `id -u` = 0 ]; then
SUDO=
fi
PRE_INSTALL_HASHES=`get_installed_hashes`
if [ "${INSTALL_K3S_BIN_DIR_READ_ONLY}" = "true" ]; then
INSTALL_K3S_SKIP_DOWNLOAD=true
fi
}
# --- check if skip download environment variable set ---
@ -300,6 +328,7 @@ download_and_verify() {
# --- add additional utility links ---
create_symlinks() {
[ "${INSTALL_K3S_BIN_DIR_READ_ONLY}" = "true" ] && return
if [ ! -e ${BIN_DIR}/kubectl ]; then
info "Creating ${BIN_DIR}/kubectl symlink to k3s"
$SUDO ln -s k3s ${BIN_DIR}/kubectl
@ -313,23 +342,26 @@ create_symlinks() {
# --- create uninstall script ---
create_uninstall() {
[ "${INSTALL_K3S_BIN_DIR_READ_ONLY}" = "true" ] && return
info "Creating uninstall script ${BIN_DIR}/${UNINSTALL_K3S_SH}"
$SUDO tee ${BIN_DIR}/${UNINSTALL_K3S_SH} >/dev/null << EOF
#!/bin/sh
set -x
systemctl kill ${SYSTEMD_NAME}
systemctl disable ${SYSTEMD_NAME}
systemctl reset-failed ${SYSTEMD_NAME}
systemctl daemon-reload
rm -f ${SYSTEMD_DIR}/${SERVICE_K3S}
rm -f ${SYSTEMD_DIR}/${SERVICE_K3S}.env
if which systemctl; then
systemctl kill ${SYSTEM_NAME}
systemctl disable ${SYSTEM_NAME}
systemctl reset-failed ${SYSTEM_NAME}
systemctl daemon-reload
fi
rm -f ${FILE_K3S_SERVICE}
rm -f ${FILE_K3S_ENV}
remove_uninstall() {
rm -f ${BIN_DIR}/${UNINSTALL_K3S_SH}
}
trap remove_uninstall EXIT
if ls ${SYSTEMD_DIR}/k3s*.service >/dev/null 2>&1; then
if (ls ${SYSTEMD_DIR}/k3s*.service || ls /etc/init.d/k3s*) >/dev/null 2>&1; then
set +x; echo "Additional k3s services installed, skipping uninstall of k3s"; set -x
exit
fi
@ -369,22 +401,22 @@ EOF
systemd_disable() {
$SUDO rm -f /etc/systemd/system/${SERVICE_K3S} || true
$SUDO rm -f /etc/systemd/system/${SERVICE_K3S}.env || true
$SUDO systemctl disable ${SYSTEMD_NAME} >/dev/null 2>&1 || true
$SUDO systemctl disable ${SYSTEM_NAME} >/dev/null 2>&1 || true
}
# --- capture current env and create file containing k3s_ variables ---
create_env_file() {
info "systemd: Creating environment file ${SYSTEMD_DIR}/${SERVICE_K3S}.env"
info "env: Creating environment file ${FILE_K3S_ENV}"
UMASK=`umask`
umask 0377
env | grep '^K3S_' | $SUDO tee ${SYSTEMD_DIR}/${SERVICE_K3S}.env >/dev/null
env | grep '^K3S_' | $SUDO tee ${FILE_K3S_ENV} >/dev/null
umask $UMASK
}
# --- write service file ---
create_service_file() {
info "systemd: Creating service file ${SYSTEMD_DIR}/${SERVICE_K3S}"
$SUDO tee ${SYSTEMD_DIR}/${SERVICE_K3S} >/dev/null << EOF
# --- write systemd service file ---
create_systemd_service_file() {
info "systemd: Creating service file ${FILE_K3S_SERVICE}"
$SUDO tee ${FILE_K3S_SERVICE} >/dev/null << EOF
[Unit]
Description=Lightweight Kubernetes
Documentation=https://k3s.io
@ -392,7 +424,7 @@ After=network.target
[Service]
Type=${SYSTEMD_TYPE}
EnvironmentFile=${SYSTEMD_DIR}/${SERVICE_K3S}.env
EnvironmentFile=${FILE_K3S_ENV}
ExecStartPre=-/sbin/modprobe br_netfilter
ExecStartPre=-/sbin/modprobe overlay
ExecStart=${BIN_DIR}/k3s ${CMD_K3S_EXEC}
@ -409,19 +441,100 @@ WantedBy=multi-user.target
EOF
}
# --- write openrc service file ---
create_openrc_service_file() {
LOG_FILE=/var/log/${SYSTEM_NAME}.log
info "openrc: Creating service file ${FILE_K3S_SERVICE}"
$SUDO tee ${FILE_K3S_SERVICE} >/dev/null << EOF
#!/sbin/openrc-run
depend() {
after net-online
need net
}
start_pre() {
rm -f /tmp/k3s.*
}
supervisor=supervise-daemon
name="${SYSTEM_NAME}"
command="${BIN_DIR}/k3s"
command_args="${CMD_K3S_EXEC} >>${LOG_FILE} 2>&1"
pidfile="/var/run/${SYSTEM_NAME}.pid"
respawn_delay=5
set -o allexport
if [ -f /etc/environment ]; then source /etc/environment; fi
if [ -f ${FILE_K3S_ENV} ]; then source ${FILE_K3S_ENV}; fi
set +o allexport
EOF
$SUDO chmod 0755 ${FILE_K3S_SERVICE}
$SUDO tee /etc/logrotate.d/${SYSTEM_NAME} >/dev/null << EOF
${LOG_FILE} {
missingok
notifempty
copytruncate
}
EOF
}
# --- write systemd or openrc service file ---
create_service_file() {
[ "${HAS_SYSTEMD}" = "true" ] && create_systemd_service_file
[ "${HAS_OPENRC}" = "true" ] && create_openrc_service_file
}
# --- get hashes of the current k3s bin and service files
get_installed_hashes() {
sha256sum ${BIN_DIR}/k3s ${FILE_K3S_SERVICE} ${FILE_K3S_ENV} 2>&1 || true
}
# --- enable and start systemd service ---
systemd_enable_and_start() {
info "systemd: Enabling ${SYSTEMD_NAME} unit"
$SUDO systemctl enable ${SYSTEMD_DIR}/${SERVICE_K3S} >/dev/null
systemd_enable() {
info "systemd: Enabling ${SYSTEM_NAME} unit"
$SUDO systemctl enable ${FILE_K3S_SERVICE} >/dev/null
$SUDO systemctl daemon-reload >/dev/null
}
systemd_start() {
info "systemd: Starting ${SYSTEM_NAME}"
$SUDO systemctl restart ${SYSTEM_NAME}
}
# --- enable and start openrc service ---
openrc_enable() {
info "openrc: Enabling ${SYSTEM_NAME} service for default runlevel"
$SUDO rc-update add ${SYSTEM_NAME} default >/dev/null
}
openrc_start() {
info "openrc: Starting ${SYSTEM_NAME}"
$SUDO ${FILE_K3S_SERVICE} restart
}
# --- startup systemd or openrc service ---
service_enable_and_start() {
[ "${HAS_SYSTEMD}" = "true" ] && systemd_enable
[ "${HAS_OPENRC}" = "true" ] && openrc_enable
[ "${INSTALL_K3S_SKIP_START}" = "true" ] && return
POST_INSTALL_HASHES=`get_installed_hashes`
if [ "${PRE_INSTALL_HASHES}" = "${POST_INSTALL_HASHES}" ]; then
info "No change detected so skipping service start"
return
fi
info "systemd: Starting ${SYSTEMD_NAME}"
$SUDO systemctl restart ${SYSTEMD_NAME}
[ "${HAS_SYSTEMD}" = "true" ] && systemd_start
[ "${HAS_OPENRC}" = "true" ] && openrc_start
}
# --- run the install process --
{
verify_systemd
verify_system
setup_env ${INSTALL_K3S_EXEC} $@
download_and_verify
create_symlinks
@ -429,5 +542,5 @@ systemd_enable_and_start() {
systemd_disable
create_env_file
create_service_file
systemd_enable_and_start
service_enable_and_start
}

Write Preview
Loading…
Cancel
Save