control-api is hosted outside the cloud and validators reach it directly,
so it sees the floating IP as the connection's source address. New open
route GET /api/v1/agents/{id}/observed-ip returns that address (taken only
from the TCP peer; forwarding headers are ignored so a validator cannot
forge it).
The agent gets self_check.methods, a priority-ordered list of ip_echo
(unchanged) and control_api; the default stays [ip_echo]. The self-check
passes when any method confirms the address; the next method is tried on
no answer and on a mismatch. Each method has its own timeout so a hung
first method cannot starve the fallback, and control_api uses a new TCP
connection per call (a connection opened before the floating IP was
attached would keep reporting the old address).
Also: docker agent template/env, example config, docs, plan in
docs/changes, e2e script switch E2E_SELF_CHECK_METHODS, rebuilt
bin/control-api and bin/validator-agent.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
24 lines
1.7 KiB
Bash
Executable File
24 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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: "${VALIDATOR_AGENT_VALIDATOR_ID:?VALIDATOR_AGENT_VALIDATOR_ID is required}"
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: "${VALIDATOR_AGENT_CONTROL_API_URL:?VALIDATOR_AGENT_CONTROL_API_URL is required}"
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export VALIDATOR_AGENT_POLL_INTERVAL_SECONDS="${VALIDATOR_AGENT_POLL_INTERVAL_SECONDS:-5}"
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export VALIDATOR_AGENT_SELF_CHECK_TIMEOUT_SECONDS="${VALIDATOR_AGENT_SELF_CHECK_TIMEOUT_SECONDS:-10}"
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export VALIDATOR_AGENT_SELF_CHECK_METHODS="${VALIDATOR_AGENT_SELF_CHECK_METHODS:-[ip_echo]}"
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export VALIDATOR_AGENT_HTTPS_TIMEOUT_SECONDS="${VALIDATOR_AGENT_HTTPS_TIMEOUT_SECONDS:-10}"
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export VALIDATOR_AGENT_ICMP_TIMEOUT_SECONDS="${VALIDATOR_AGENT_ICMP_TIMEOUT_SECONDS:-5}"
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export VALIDATOR_AGENT_ICMP_COUNT="${VALIDATOR_AGENT_ICMP_COUNT:-3}"
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export VALIDATOR_AGENT_SSH_ENABLED="${VALIDATOR_AGENT_SSH_ENABLED:-false}"
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export VALIDATOR_AGENT_SSH_TIMEOUT_SECONDS="${VALIDATOR_AGENT_SSH_TIMEOUT_SECONDS:-5}"
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# Tokens/passwords (CONTROL_API_AGENT_TOKEN, ADMIN_DASHBOARD_*) are deliberately
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# NOT templated into the YAML: the binary reads them straight from this
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# container's environment (names default in the config loader), so secrets
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# never land in a file inside the container.
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envsubst '${VALIDATOR_AGENT_VALIDATOR_ID} ${VALIDATOR_AGENT_CONTROL_API_URL} ${VALIDATOR_AGENT_POLL_INTERVAL_SECONDS} ${VALIDATOR_AGENT_SELF_CHECK_TIMEOUT_SECONDS} ${VALIDATOR_AGENT_SELF_CHECK_METHODS} ${VALIDATOR_AGENT_HTTPS_TIMEOUT_SECONDS} ${VALIDATOR_AGENT_ICMP_TIMEOUT_SECONDS} ${VALIDATOR_AGENT_ICMP_COUNT} ${VALIDATOR_AGENT_SSH_ENABLED} ${VALIDATOR_AGENT_SSH_TIMEOUT_SECONDS}' \
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< /etc/validator-agent/validator-agent.yaml.tmpl > /etc/validator-agent/validator-agent.yaml
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exec /usr/local/bin/validator-agent -config /etc/validator-agent/validator-agent.yaml
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