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|
{pkgs, config, ...}:
with import <stockholm/lib>;
let
collectd-port = 25826;
influx-port = 8086;
grafana-port = 3000; # TODO nginx forward
db = "collectd_db";
logging-interface = config.makefu.server.primary-itf;
in {
services.grafana.enable = true;
services.grafana.addr = "0.0.0.0";
services.influxdb.enable = true;
# forward these via nginx
services.influxdb.extraConfig = {
meta.hostname = config.krebs.build.host.name;
# meta.logging-enabled = true;
http.bind-address = ":${toString influx-port}";
admin.bind-address = ":8083";
monitoring = {
enabled = false;
# write-interval = "24h";
};
collectd = [{
enabled = true;
typesdb = "${pkgs.collectd}/share/collectd/types.db";
database = db;
port = collectd-port;
}];
};
krebs.kapacitor =
let
echoToIrc = pkgs.writeDash "echo_irc" ''
set -euf
data="$(${pkgs.jq}/bin/jq -r .message)"
export LOGNAME=malarm
${pkgs.irc-announce}/bin/irc-announce \
irc.freenode.org 6667 malarm \#krebs-bots "$data" >/dev/null
'';
in {
enable = true;
alarms = {
cpu_deadman.database = db;
cpu_deadman.text = ''
var data = batch
|query(${"'''"}
SELECT mean("value") AS mean
FROM "collectd_db"."default"."cpu_value"
WHERE "type_instance" = 'idle' AND "type" = 'percent' fill(0)
${"'''"})
.period(10m)
.every(1m)
.groupBy('host')
data |alert()
.crit(lambda: "mean" < 50)
.stateChangesOnly()
.exec('${echoToIrc}')
data |deadman(1.0,5m)
.stateChangesOnly()
.exec('${echoToIrc}')
'';
};
};
networking.firewall.extraCommands = ''
iptables -A INPUT -i retiolum -p udp --dport ${toString collectd-port} -j ACCEPT
iptables -A INPUT -i retiolum -p tcp --dport ${toString influx-port} -j ACCEPT
iptables -A INPUT -i retiolum -p tcp --dport ${toString grafana-port} -j ACCEPT
iptables -A INPUT -i ${logging-interface} -p udp --dport ${toString collectd-port} -j ACCEPT
iptables -A INPUT -i ${logging-interface} -p tcp --dport ${toString influx-port} -j ACCEPT
iptables -A INPUT -i ${logging-interface} -p tcp --dport ${toString grafana-port} -j ACCEPT
ip6tables -A INPUT -i retiolum -p udp --dport ${toString collectd-port} -j ACCEPT
ip6tables -A INPUT -i retiolum -p tcp --dport ${toString influx-port} -j ACCEPT
ip6tables -A INPUT -i retiolum -p tcp --dport ${toString grafana-port} -j ACCEPT
ip6tables -A INPUT -i ${logging-interface} -p udp --dport ${toString collectd-port} -j ACCEPT
ip6tables -A INPUT -i ${logging-interface} -p tcp --dport ${toString influx-port} -j ACCEPT
ip6tables -A INPUT -i ${logging-interface} -p tcp --dport ${toString grafana-port} -j ACCEPT
'';
}
|
