pipistrello
673d747abd
Telemt's Prometheus endpoint exposes only active-IP counts, while its loopback control API includes both the address list and sensitive proxy links. Add a root systemd timer that enters the Telemt container network namespace, filters the API response in memory, and publishes only username/address rows through the Zabbix agent key telemt.active_ips.list.\n\nThe collector refreshes every 30 seconds, writes atomically with root:zabbix 0640 permissions, and leaves the control API unexposed. Document the host installation and recommend one-day Zabbix history because client IP addresses are sensitive operational data.
53 lines
1.5 KiB
Bash
Executable File
53 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/bash
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set -euo pipefail
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container_name="ts-lan-telemt"
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output_dir="/var/lib/zabbix"
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json_target="${output_dir}/telemt-active-ips.json"
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text_target="${output_dir}/telemt-active-ips.txt"
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install -d -o root -g zabbix -m 0750 "${output_dir}"
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container_pid="$(docker inspect --format '{{.State.Pid}}' "${container_name}")"
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if [[ -z "${container_pid}" || "${container_pid}" == "0" ]]; then
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exit 1
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fi
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json_tmp="$(mktemp "${output_dir}/.telemt-active-ips.json.XXXXXX")"
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text_tmp="$(mktemp "${output_dir}/.telemt-active-ips.txt.XXXXXX")"
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trap 'rm -f "${json_tmp}" "${text_tmp}"' EXIT
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# The API response also contains proxy links and secrets. Filter it in-memory
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# and persist only the username and current active IP address list.
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nsenter -t "${container_pid}" -n \
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curl --fail --silent --show-error --max-time 5 \
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http://127.0.0.1:9091/v1/users |
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jq --compact-output '{
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users: [
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.data[]
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| {
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username,
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active_unique_ips: (.active_unique_ips_list // [])
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}
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]
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}' > "${json_tmp}"
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{
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active_count="$(jq '[.users[].active_unique_ips[]] | length' "${json_tmp}")"
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printf 'Active IP addresses: %s\n' "${active_count}"
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jq --raw-output '
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[
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.users[] as $user
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| $user.active_unique_ips[]
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| "\($user.username) | \(.)"
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]
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| if length == 0 then ["No active IP addresses"] else . end
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| .[]
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' "${json_tmp}"
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} > "${text_tmp}"
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chown root:zabbix "${json_tmp}" "${text_tmp}"
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chmod 0640 "${json_tmp}" "${text_tmp}"
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mv -f "${json_tmp}" "${json_target}"
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mv -f "${text_tmp}" "${text_target}"
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