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#!/usr/bin/env bash
#
# Entry point script for netdata
#
# Copyright: 2018 and later Netdata Inc.
# SPDX-License-Identifier: GPL-3.0-or-later
#
# Author : Pavlos Emm. Katsoulakis <paul@netdata.cloud>
# Author : Austin S. Hemmelgarn <austin@netdata.cloud>
set -e
if [ ! -w / ] && [ "${EUID}" -eq 0 ]; then
echo >&2 "WARNING: This Docker host appears to not properly support newer stat system calls. This is known to cause issues with Netdata (most notably, nodes running on such hosts **cannot be claimed**)."
echo >&2 "WARNING: For more information, see https://learn.netdata.cloud/docs/agent/claim#known-issues-on-older-hosts-with-seccomp-enabled"
fi
# Needed to read Proxmox VMs and (LXC) containers configuration files (name resolution + CPU and memory limits)
function add_netdata_to_proxmox_conf_files_group() {
group_guid="$(stat -c %g /host/etc/pve 2>/dev/null || true)"
[ -z "${group_guid}" ] && return
if ! getent group "${group_guid}" >/dev/null; then
echo "Creating proxmox-etc-pve group with GID ${group_guid}"
if ! addgroup -g "${group_guid}" "proxmox-etc-pve"; then
echo >&2 "Failed to add group proxmox-etc-pve with GID ${group_guid}."
return
fi
fi
if ! getent group "${group_guid}" | grep -q netdata; then
echo "Assign netdata user to group ${group_guid}"
if ! usermod -a -G "${group_guid}" "${DOCKER_USR}"; then
echo >&2 "Failed to add netdata user to group with GID ${group_guid}."
return
fi
fi
}
if [ ! "${DISABLE_TELEMETRY:-0}" -eq 0 ] ||
[ -n "$DISABLE_TELEMETRY" ] ||
[ ! "${DO_NOT_TRACK:-0}" -eq 0 ] ||
[ -n "$DO_NOT_TRACK" ]; then
touch /etc/netdata/.opt-out-from-anonymous-statistics
fi
chmod o+rX / 2>/dev/null || echo "Unable to change permissions without errors."
if [ "${EUID}" -eq 0 ]; then
if [ -n "${NETDATA_EXTRA_APK_PACKAGES}" ]; then
echo >&2 "WARNING: Netdata’s Docker images have switched from Alpine to Debian as a base platform. Supplementary package support is now handled through the NETDATA_EXTRA_DEB_PACKAGES variable instead of NETDATA_EXTRA_APK_PACKAGES."
echo >&2 "WARNING: The container will still run, but supplementary packages listed in NETDATA_EXTRA_APK_PACKAGES will not be installed."
echo >&2 "WARNING: To remove these messages, either undefine NETDATA_EXTRA_APK_PACKAGES, or define it to an empty string."
fi
if [ -n "${NETDATA_EXTRA_DEB_PACKAGES}" ]; then
echo "Fetching APT repository metadata."
if ! apt-get update; then
echo "Failed to fetch APT repository metadata."
else
echo "Installing supplementary packages."
export DEBIAN_FRONTEND="noninteractive"
# shellcheck disable=SC2086
if ! apt-get install -y --no-install-recommends ${NETDATA_EXTRA_DEB_PACKAGES}; then
echo "Failed to install supplementary packages."
fi
fi
fi
BALENA_PGID=$(stat -c %g /var/run/balena.sock 2>/dev/null || true)
DOCKER_PGID=$(stat -c %g /var/run/docker.sock 2>/dev/null || true)
re='^[0-9]+$'
if [[ $BALENA_PGID =~ $re ]]; then
echo "Netdata detected balena-engine.sock"
DOCKER_HOST='/var/run/balena-engine.sock'
PGID="$BALENA_PGID"
elif [[ $DOCKER_PGID =~ $re ]]; then
echo "Netdata detected docker.sock"
DOCKER_HOST="/var/run/docker.sock"
PGID="$DOCKER_PGID"
fi
export PGID
export DOCKER_HOST
if [ -n "${PGID}" ]; then
echo "Creating docker group ${PGID}"
addgroup --gid "${PGID}" "docker" || echo >&2 "Could not add group docker with ID ${PGID}, its already there probably"
echo "Assign netdata user to docker group ${PGID}"
usermod --append --groups "docker" "${DOCKER_USR}" || echo >&2 "Could not add netdata user to group docker with ID ${PGID}"
fi
if [ -d "/host/etc/pve" ]; then
add_netdata_to_proxmox_conf_files_group || true
fi
else
echo >&2 "WARNING: Entrypoint started as non-root user. This is not officially supported and some features may not be available."
fi
if mountpoint -q /etc/netdata; then
echo "Copying stock configuration to /etc/netdata"
cp -an /etc/netdata.stock/* /etc/netdata
cp -an /etc/netdata.stock/.[^.]* /etc/netdata
fi
if [ -w "/etc/netdata" ]; then
if mountpoint -q /etc/netdata; then
hostname >/etc/netdata/.container-hostname
else
rm -f /etc/netdata/.container-hostname
fi
fi
if [ -n "${NETDATA_CLAIM_URL}" ] && [ -n "${NETDATA_CLAIM_TOKEN}" ] && [ ! -f /var/lib/netdata/cloud.d/claimed_id ]; then
# shellcheck disable=SC2086
/usr/sbin/netdata-claim.sh -token="${NETDATA_CLAIM_TOKEN}" \
-url="${NETDATA_CLAIM_URL}" \
${NETDATA_CLAIM_ROOMS:+-rooms="${NETDATA_CLAIM_ROOMS}"} \
${NETDATA_CLAIM_PROXY:+-proxy="${NETDATA_CLAIM_PROXY}"} \
${NETDATA_EXTRA_CLAIM_OPTS} \
-daemon-not-running
fi
exec /usr/sbin/netdata -u "${DOCKER_USR}" -D -s /host -p "${NETDATA_LISTENER_PORT}" "$@"
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