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securityonion/salt/elasticfleet/tools/sbin/so-elastic-agent-install
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#!/bin/bash
# Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
# https://securityonion.net/license; you may not use this file except in compliance with the
# Elastic License 2.0.
. /usr/sbin/so-elastic-fleet-common
# passed in as arg from elasticfleet/install_agent_grid.sls, else pulled from pillar later
GRIDNODETOKEN="$1"
LOGFILE="/opt/so/SO-Elastic-Agent_Installer_Health.log"
check_agent_health() {
timeout=300
interval=10
start=$SECONDS
truncate -s 0 "$LOGFILE"
while (( SECONDS - start < timeout )); do
agent_status=$(elastic-agent status 2>&1)
echo -e "\n$(date)\n$agent_status\n" >> "$LOGFILE"
if echo "$agent_status" | grep -A1 'elastic-agent$' | grep -q 'status: (HEALTHY)'; then
return 0
fi
echo "The Elastic Agent is not yet healthy. Waiting for ${interval} seconds before checking again..."
sleep "$interval"
done
echo "The Elastic Agent did not become healthy within ${timeout} seconds"
return 1
}
uninstall_agent() {
if command -v elastic-agent >/dev/null 2>&1; then
elastic-agent uninstall -f
fi
}
if [[ -z "$GRIDNODETOKEN" ]]; then
noderole=$(so-yaml.py get -r /etc/salt/grains role)
if [[ "$noderole" == "so-heavynode" ]]; then
GRIDNODETOKEN=$(salt-call pillar.get global:fleet_grid_enrollment_token_heavy --out=newline_values_only)
else
GRIDNODETOKEN=$(salt-call pillar.get global:fleet_grid_enrollment_token_general --out=newline_values_only)
fi
fi
if [[ -z "$GRIDNODETOKEN" ]]; then
echo "Unable to determine Elastic Fleet enrollment token. Exiting."
exit 1
fi
if [[ ! -x /opt/so/so-elastic-agent_linux_amd64 ]]; then
echo "Downloading so-elastic-agent installer... This could take a while if another Salt job is running."
# When running outside of elasticfleet/install_agent_grid.sls we need to download the installer independently.
# PYTHONWARNINGS="ignore" to avoid messages like the following when running salt-call:
# '/opt/saltstack/salt/lib/python3.10/site-packages/salt/transport/base.py:129: TransportWarning: Unclosed transport! <salt.transport.zeromq.RequestClient object at 0x7fc5f0ee7a30>
# File "/bin/salt-call", line 12, in <module>
# sys.exit(salt_call())'
PYTHONWARNINGS="ignore" salt-call state.single file.managed name=/opt/so/so-elastic-agent_linux_amd64 source=salt://elasticfleet/files/so_agent-installers/so-elastic-agent_linux_amd64 mode=755 makedirs=True queue=True
fi
if [[ -x /opt/so/so-elastic-agent_linux_amd64 ]]; then
attempts=0
cd /opt/so/ || exit 1
uninstall_agent
while [[ $attempts -lt 3 ]]; do
if ./so-elastic-agent_linux_amd64 -token="$GRIDNODETOKEN" -force && echo "Verifying Elastic Agent health..." && check_agent_health; then
rm -f /opt/so/so-elastic-agent_linux_amd64
elastic-agent status
exit 0
fi
attempts=$((attempts + 1))
if [[ $attempts -lt 3 ]]; then
echo "Unable to verify Elastic Agent health... Retrying in 20 seconds..."
sleep 20
fi
done
uninstall_agent
rm -f /opt/so/so-elastic-agent_linux_amd64
echo "The so-elastic-agent installer failed after 3 attempts. Exiting."
exit 1
else
echo "Unable to locate so-elastic-agent installer. Exiting."
exit 1
fi