VictoriaMetrics/app/vmalert/notifier/init.go
Roman Khavronenko 852a895b70
vmalert: make notifier.Addr optional (#1870)
For a long time notifier.Addr flag was required. The assumption was that vmalert will
be always used for alerting. However, practice shows that some users need only
recording rules. In this case, requirement of notifier.Addr is ambigious.

The change verifies if loaded config contains recording or alerting rules and
if there are corresponding flags set. This is true for initial config load
and hot reload.

Signed-off-by: hagen1778 <roman@victoriametrics.com>
2021-11-30 01:18:48 +02:00

41 lines
2.1 KiB
Go

package notifier
import (
"fmt"
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/utils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
)
var (
addrs = flagutil.NewArray("notifier.url", "Prometheus alertmanager URL, e.g. http://127.0.0.1:9093")
basicAuthUsername = flagutil.NewArray("notifier.basicAuth.username", "Optional basic auth username for -notifier.url")
basicAuthPassword = flagutil.NewArray("notifier.basicAuth.password", "Optional basic auth password for -notifier.url")
tlsInsecureSkipVerify = flagutil.NewArrayBool("notifier.tlsInsecureSkipVerify", "Whether to skip tls verification when connecting to -notifier.url")
tlsCertFile = flagutil.NewArray("notifier.tlsCertFile", "Optional path to client-side TLS certificate file to use when connecting to -notifier.url")
tlsKeyFile = flagutil.NewArray("notifier.tlsKeyFile", "Optional path to client-side TLS certificate key to use when connecting to -notifier.url")
tlsCAFile = flagutil.NewArray("notifier.tlsCAFile", "Optional path to TLS CA file to use for verifying connections to -notifier.url. "+
"By default system CA is used")
tlsServerName = flagutil.NewArray("notifier.tlsServerName", "Optional TLS server name to use for connections to -notifier.url. "+
"By default the server name from -notifier.url is used")
)
// Init creates a Notifier object based on provided flags.
func Init(gen AlertURLGenerator) ([]Notifier, error) {
var notifiers []Notifier
for i, addr := range *addrs {
cert, key := tlsCertFile.GetOptionalArg(i), tlsKeyFile.GetOptionalArg(i)
ca, serverName := tlsCAFile.GetOptionalArg(i), tlsServerName.GetOptionalArg(i)
tr, err := utils.Transport(addr, cert, key, ca, serverName, tlsInsecureSkipVerify.GetOptionalArg(i))
if err != nil {
return nil, fmt.Errorf("failed to create transport: %w", err)
}
user, pass := basicAuthUsername.GetOptionalArg(i), basicAuthPassword.GetOptionalArg(i)
am := NewAlertManager(addr, user, pass, gen, &http.Client{Transport: tr})
notifiers = append(notifiers, am)
}
return notifiers, nil
}