Added ceph-exporter to service placement interface

Signed-off-by: utkarsh bhatt <utkarsh.bhatt@canonical.com>

Author: UtkarshBhatthere

microceph/ceph/ceph_exporter.go

@@ -0,0 +1,26 @@
+package ceph
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/canonical/lxd/shared/logger"
+)
+
+func bootstrapCephExporter(hostname string, path string) error {
+	args := []string{
+		"auth",
+		"get-or-create",
+		fmt.Sprintf("client.ceph-exporter.%s", hostname),
+		"mon", "profile ceph-exporter",
+		"-o", filepath.Join(path, "keyring"),
+	}
+
+	_, err := cephRun(args...)
+	if err != nil {
+		logger.Errorf("failed to bootstrap ceph-exporter daemon: %s", err.Error())
+		return err
+	}
+
+	return nil
+}

microceph/ceph/services_placement.go

@@ -26,11 +26,12 @@ type PlacementIntf interface {
 
 func GetServicePlacementTable() map[string](PlacementIntf) {
 	return map[string](PlacementIntf){
-		"mon":        &MonServicePlacement{"mon"},
-		"mgr":        &GenericServicePlacement{"mgr"},
-		"mds":        &GenericServicePlacement{"mds"},
-		"rgw":        &RgwServicePlacement{},
-		"rbd-mirror": &ClientServicePlacement{"rbd-mirror"},
+		"mon":           &MonServicePlacement{"mon"},
+		"mgr":           &GenericServicePlacement{"mgr"},
+		"mds":           &GenericServicePlacement{"mds"},
+		"rgw":           &RgwServicePlacement{},
+		"rbd-mirror":    &ClientServicePlacement{"rbd-mirror"},
+		"ceph-exporter": &ClientServicePlacement{"ceph-exporter"},
 	}
 }
 

microceph/ceph/services_placement_generic.go

@@ -18,10 +18,11 @@ import (
 // Maps the addService function to respective services.
 func GetServiceKeyringTable() map[string](func(string, string) error) {
 	return map[string](func(string, string) error){
-		"mon":        joinMon,
-		"mgr":        bootstrapMgr,
-		"mds":        bootstrapMds,
-		"rbd-mirror": bootstrapRbdMirror,
+		"mon":           joinMon,
+		"mgr":           bootstrapMgr,
+		"mds":           bootstrapMds,
+		"rbd-mirror":    bootstrapRbdMirror,
+		"ceph-exporter": bootstrapCephExporter,
 		// Add more services here, for using the generic Interface implementation.
 	}
 }

snap/snapcraft.yaml

@@ -137,6 +137,16 @@ apps:
       - network
       - network-bind
       - process-control
+  "ceph-exporter":
+    command: commands/ceph-exporter.start
+    daemon: simple
+    install-mode: disable
+    after:
+      - daemon
+    plugs:
+      - network
+      - network-bind
+      - process-control
   # Commands
   ceph:
     command: commands/ceph

snapcraft/commands/ceph-exporter.start

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+. "${SNAP}/commands/common"
+
+limits
+
+exec ceph-exporter -f --cluster ceph --id "ceph-exporter.$(hostname)"