Merge pull request #210 from oliver006/oh_bring_back_persistence_metrics

bring back some accidentally dropped commits

README.md

@@ -100,6 +100,7 @@ namespace          | Namespace for the metrics, defaults to `redis`.
 web.listen-address | Address to listen on for web interface and telemetry, defaults to `0.0.0.0:9121`.
 web.telemetry-path | Path under which to expose metrics, defaults to `metrics`.
 use-cf-bindings    | Enable usage of Cloud Foundry service bindings. Defaults to `false`
+separator          | Separator used to split redis.addr, redis.password and redis.alias into several elements. Defaults to `,`
 Redis node addresses can be tcp addresses like `redis://localhost:6379`, `redis.example.com:6379` or unix socket addresses like `unix:///tmp/redis.sock`. <br>
 SSL is supported by using the `rediss://` schema, for example: `rediss://azure-ssl-enabled-host.redis.cache.windows.net:6380` (note that the port is required when connecting to a non-standard 6379 port, e.g. with Azure Redis instances).

contrib/grafana_prometheus_redis_dashboard.json

@@ -108,11 +108,11 @@
             "fillColor": "rgba(31, 118, 189, 0.18)",
             "full": false,
             "lineColor": "rgb(31, 120, 193)",
-            "show": false
+            "show": true
           },
           "targets": [
             {
-              "expr": "redis_uptime_in_seconds{addr=\"$addr\"}",
+              "expr": "max(max_over_time(redis_uptime_in_seconds{addr=\"$addr\"}[$__interval]))", 
               "intervalFactor": 2,
               "legendFormat": "",
               "metric": "",
@@ -131,7 +131,7 @@
               "value": "null"
             }
           ],
-          "valueName": "avg"
+          "valueName": "current"
         },
         {
           "cacheTimeout": null,

contrib/grafana_prometheus_redis_dashboard_alias.json

@@ -104,11 +104,11 @@
             "fillColor": "rgba(31, 118, 189, 0.18)",
             "full": false,
             "lineColor": "rgb(31, 120, 193)",
-            "show": false
+            "show": true
           },
           "targets": [
             {
-              "expr": "redis_uptime_in_seconds{instance=\"$host\",alias=\"$alias\"}",
+              "expr": "max(max_over_time(redis_uptime_in_seconds{instance=\"$host\",alias=\"$alias\"}[$__interval]))", 
               "intervalFactor": 2,
               "legendFormat": "",
               "metric": "",
@@ -127,7 +127,7 @@
               "value": "null"
             }
           ],
-          "valueName": "avg"
+          "valueName": "current"
         },
         {
           "cacheTimeout": null,

exporter/redis.go

@@ -83,21 +83,27 @@ var (
 		// # Persistence
 		"rdb_changes_since_last_save":  "rdb_changes_since_last_save",
+		"rdb_bgsave_in_progress":       "rdb_bgsave_in_progress",
+		"rdb_last_save_time":           "rdb_last_save_timestamp_seconds",
+		"rdb_last_bgsave_status":       "rdb_last_bgsave_status",
 		"rdb_last_bgsave_time_sec":     "rdb_last_bgsave_duration_sec",
 		"rdb_current_bgsave_time_sec":  "rdb_current_bgsave_duration_sec",
+		"rdb_last_cow_size":            "rdb_last_cow_size_bytes",
 		"aof_enabled":                  "aof_enabled",
 		"aof_rewrite_in_progress":      "aof_rewrite_in_progress",
 		"aof_rewrite_scheduled":        "aof_rewrite_scheduled",
 		"aof_last_rewrite_time_sec":    "aof_last_rewrite_duration_sec",
 		"aof_current_rewrite_time_sec": "aof_current_rewrite_duration_sec",
-		"aof_last_cow_size":            "aof_last_cow_size",
-		"aof_current_size":             "aof_current_size",
-		"aof_base_size":                "aof_base_size",
+		"aof_last_cow_size":            "aof_last_cow_size_bytes",
+		"aof_current_size":             "aof_current_size_bytes",
+		"aof_base_size":                "aof_base_size_bytes",
 		"aof_pending_rewrite":          "aof_pending_rewrite",
 		"aof_buffer_length":            "aof_buffer_length",
 		"aof_rewrite_buffer_length":    "aof_rewrite_buffer_length",
 		"aof_pending_bio_fsync":        "aof_pending_bio_fsync",
 		"aof_delayed_fsync":            "aof_delayed_fsync",
+		"aof_last_bgrewrite_status":    "aof_last_bgrewrite_status",
+		"aof_last_write_status":        "aof_last_write_status",
 		// # Stats
 		"total_connections_received": "connections_received_total",

main.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"runtime"
+	"strconv"
 	"github.com/oliver006/redis_exporter/exporter"
 	"github.com/prometheus/client_golang/prometheus"
@@ -18,18 +19,18 @@ var (
 	redisFile        = flag.String("redis.file", getEnv("REDIS_FILE", ""), "Path to file containing one or more redis nodes, separated by newline. NOTE: mutually exclusive with redis.addr")
 	redisPassword    = flag.String("redis.password", getEnv("REDIS_PASSWORD", ""), "Password for one or more redis nodes, separated by separator")
 	redisAlias       = flag.String("redis.alias", getEnv("REDIS_ALIAS", ""), "Redis instance alias for one or more redis nodes, separated by separator")
-	namespace        = flag.String("namespace", "redis", "Namespace for metrics")
-	checkKeys        = flag.String("check-keys", "", "Comma separated list of key-patterns to export value and length/size, searched for with SCAN")
-	checkSingleKeys  = flag.String("check-single-keys", "", "Comma separated list of single keys to export value and length/size")
-	scriptPath       = flag.String("script", "", "Path to Lua Redis script for collecting extra metrics")
-	separator        = flag.String("separator", ",", "separator used to split redis.addr, redis.password and redis.alias into several elements.")
-	listenAddress    = flag.String("web.listen-address", ":9121", "Address to listen on for web interface and telemetry.")
-	metricPath       = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
-	isDebug          = flag.Bool("debug", false, "Output verbose debug information")
-	logFormat        = flag.String("log-format", "txt", "Log format, valid options are txt and json")
+	namespace        = flag.String("namespace", getEnv("REDIS_EXPORTER_NAMESPACE", "redis"), "Namespace for metrics")
+	checkKeys        = flag.String("check-keys", getEnv("REDIS_EXPORTER_CHECK_KEYS", ""), "Comma separated list of key-patterns to export value and length/size, searched for with SCAN")
+	checkSingleKeys  = flag.String("check-single-keys", getEnv("REDIS_EXPORTER_CHECK_SINGLE_KEYS", ""), "Comma separated list of single keys to export value and length/size")
+	scriptPath       = flag.String("script", getEnv("REDIS_EXPORTER_SCRIPT", ""), "Path to Lua Redis script for collecting extra metrics")
+	separator        = flag.String("separator", getEnv("REDIS_EXPORTER_SEPARATOR", ","), "separator used to split redis.addr, redis.password and redis.alias into several elements.")
+	listenAddress    = flag.String("web.listen-address", getEnv("REDIS_EXPORTER_WEB_LISTEN_ADDRESS", ":9121"), "Address to listen on for web interface and telemetry.")
+	metricPath       = flag.String("web.telemetry-path", getEnv("REDIS_EXPORTER_WEB_TELEMETRY_PATH", "/metrics"), "Path under which to expose metrics.")
+	isDebug          = flag.Bool("debug", getEnvBool("REDIS_EXPORTER_DEBUG"), "Output verbose debug information")
+	logFormat        = flag.String("log-format", getEnv("REDIS_EXPORTER_LOG_FORMAT", "txt"), "Log format, valid options are txt and json")
 	showVersion      = flag.Bool("version", false, "Show version information and exit")
-	useCfBindings    = flag.Bool("use-cf-bindings", false, "Use Cloud Foundry service bindings")
-	redisMetricsOnly = flag.Bool("redis-only-metrics", false, "Whether to export go runtime metrics also")
+	useCfBindings    = flag.Bool("use-cf-bindings", getEnvBool("REDIS_EXPORTER_USE-CF-BINDINGS"), "Use Cloud Foundry service bindings")
+	redisMetricsOnly = flag.Bool("redis-only-metrics", getEnvBool("REDIS_EXPORTER_REDIS_ONLY_METRICS"), "Whether to export go runtime metrics also")
 	// VERSION, BUILD_DATE, GIT_COMMIT are filled in by the build script
 	VERSION     = "<<< filled in by build >>>"
@@ -44,6 +45,13 @@ func getEnv(key string, defaultVal string) string {
 	return defaultVal
 }
+func getEnvBool(key string) (envValBool bool) {
+	if envVal, ok := os.LookupEnv(key); ok {
+		envValBool, _ = strconv.ParseBool(envVal)
+	}
+	return
+}
+
 func main() {
 	flag.Parse()