CODEWITHSUNDEEP
gobosunscollector
krish7919
krish7919

Reputation: 942

Bosun - Get IP address of host using .GetMeta

I am trying to create a (golang) struct for handling bosun alerts sent over http. It holds alert details, most importantly, about the eth0 IP address of the corresponding host.

/* This struct is defined as per the notification defined in bosun config */
type BosunAlert struct {
    AckUrl       string   `json:"ack"`
    AlertName    string   `json:"alert_name"`
    LastStatus   string   `json:"last_status"`
    IpMac        []string `json:"ip,omitempty"`
}

The corresponding template looks as follows:

template template.bosun_listener {
    subject = `{
        "ack":"{{.Ack}}",
        "alert_name":"{{.Alert.Name}}",
        "last_status":"{{.Last.Status}}",
        "ip":{{ .GetMeta "" "addresses" (printf "host=%s,iface=eth0" .Group.host) }}
    }`
    body = ``
}

However, I get this error:

info: check.go:305: alert.network{host=147210308125790,ifName=server-1609}:
template: template.bosun_listener:6:12: executing "template.bosun_listener" at 
<.GetMeta>: error calling GetMeta: redigo: nil returned

I am using a []string for IpMac field as I cannot isolate the eth0 IP from it's ethernet address.

Any way to do this?

EDIT: This is the output I get:

"ack":"http://localhost:8070/action?
key=alert.network%7Bhost%3D147210308125790%2CifName%3server-1609%7D&type=ack",
"alert_name":"alert.network", "last_status":"critical", "ip":
["172.31.40.31/20","fe80::61:adff:feb1:1f5b/64"] }

This is the alert I have configured:

alert alert.network {
    runEvery = 5
    $ip = ""
    template = template.bosun_listener
    $usage = avg(q("avg:rate:container.net.bytes{host=*,ifName=server*}", "5m", ""))
    crit = $usage > 100
    critNotification = notification.test
}

Upvotes: 1

Views: 111

Answers (1)

Kyle Brandt
Kyle Brandt

Reputation: 28457

Are you sure that the host in question as an eth0 device (and bosun has indexed that metadata)? nil means it couldn't find the entry.

The following works for me:

template test {
    subject = {{ .GetMeta "" "addresses" (printf "host=%s,iface=eth0" .Group.host) }}
}

Upvotes: 2

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