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// based loosely on https://github.com/prometheus/node_exporter/blob/master/collector/watchdog.go
const SC_WATCHDOG_PATH = "/sys/class/watchdog/";
const metrics = {
bootstatus: gauge("node_watchdog_bootstatus",
"Value of /sys/class/watchdog/<watchdog>/bootstatus"),
fw_version: gauge("node_watchdog_fw_version",
"Value of /sys/class/watchdog/<watchdog>/fw_version"),
nowayout: gauge("node_watchdog_nowayout",
"Value of /sys/class/watchdog/<watchdog>/nowayout"),
timeleft: gauge("node_watchdog_timeleft_seconds",
"Value of /sys/class/watchdog/<watchdog>/timeleft"),
timeout: gauge("node_watchdog_timeout_seconds",
"Value of /sys/class/watchdog/<watchdog>/timeout"),
pretimeout: gauge("node_watchdog_pretimeout_seconds",
"Value of /sys/class/watchdog/<watchdog>/pretimeout"),
access_cs0: gauge("node_watchdog_access_cs0",
"Value of /sys/class/watchdog/<watchdog>/access_cs0"),
};
const info_gauge = gauge("node_watchdog_info",
"Info of /sys/class/watchdog/<watchdog>");
const avail_gauge = gauge("node_watchdog_available",
"Info of /sys/class/watchdog/<watchdog>/pretimeout_available_governors");
const wd_paths = [];
for (let wd_path in fs.lsdir(SC_WATCHDOG_PATH, "watchdog*")) {
push(wd_paths, wd_path);
}
// watchdog metrics
for (let m in metrics) {
for (let wd_path in wd_paths)
if(fs.access(`${SC_WATCHDOG_PATH}/${wd_path}/${m}`))
metrics[m]({ name: `${wd_path}` }, oneline(`${SC_WATCHDOG_PATH}/${wd_path}/${m}`));
}
// watchdog summary info properties
for (let wd_path in wd_paths) {
const path = `${SC_WATCHDOG_PATH}/${wd_path}`;
const opts = oneline(`${path}/options`);
const iden = oneline(`${path}/identity`);
const stat = oneline(`${path}/state`);
const stus = oneline(`${path}/status`);
const prtg = oneline(`${path}/pretimeout_governor`);
const labels = { name: wd_path };
if (opts) labels.options = opts;
if (iden) labels.identity = iden;
if (stat) labels.state = stat;
if (stus) labels.status = stus;
if (prtg) labels.pretimeout_governor = prtg;
info_gauge(labels, 1);
}
for (let wd_path in wd_paths) {
if (!fs.access(`${SC_WATCHDOG_PATH}/${wd_path}/pretimeout_available_governors`))
continue;
const pa = split(oneline(`${SC_WATCHDOG_PATH}/${wd_path}/pretimeout_available_governors`), ' ');
for (let gov in pa) {
if (!gov) continue;
avail_gauge({ available: gov, device: `${wd_path}` }, 1)
}
}
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