packaging: fixed issue with pid file on systemd systems, fixes #9133

packaging/deb/control/postinst

@@ -6,6 +6,7 @@ set -e
 
 IS_UPGRADE=false
 
+
 case "$1" in
 	configure)
 	[ -z "$GRAFANA_USER" ] && GRAFANA_USER="grafana"
@@ -41,6 +42,12 @@ case "$1" in
     IS_UPGRADE=true
   fi
 
+  # make sure there is a /var/run/grafana dir on systemd systems
+  if [ -x /bin/systemctl ] ; then
+    mkdir -p $PID_FILE_DIR
+    chown -R $GRAFANA_USER:$GRAFANA_GROUP $PID_FILE_DIR
+  fi
+
   if [ "x$IS_UPGRADE" != "xtrue" ]; then
     if command -v systemctl >/dev/null; then
       echo "### NOT starting on installation, please execute the following statements to configure grafana to start automatically using systemd"

packaging/deb/default/grafana-server

@@ -17,3 +17,6 @@ CONF_FILE=/etc/grafana/grafana.ini
 RESTART_ON_UPGRADE=true
 
 PLUGINS_DIR=/var/lib/grafana/plugins
+
+# Only used on systemd systems
+PID_FILE_DIR=/var/run/grafana

packaging/deb/systemd/grafana-server.service

@@ -14,7 +14,7 @@ Restart=on-failure
 WorkingDirectory=/usr/share/grafana
 ExecStart=/usr/sbin/grafana-server                                        \
                             --config=${CONF_FILE}                         \
-                            --pidfile=${PID_FILE}                 \
+                            --pidfile=${PID_FILE_DIR}/grafana-server.pid  \
                             cfg:default.paths.logs=${LOG_DIR}             \
                             cfg:default.paths.data=${DATA_DIR}            \
                             cfg:default.paths.plugins=${PLUGINS_DIR}

packaging/rpm/control/postinst

@@ -25,6 +25,7 @@ stopGrafana() {
 	fi
 }
 
+
 # Initial installation: $1 == 1
 # Upgrade: $1 == 2, and configured to restart on upgrade
 if [ $1 -eq 1 ] ; then
@@ -55,6 +56,12 @@ if [ $1 -eq 1 ] ; then
 	find /etc/grafana -type f -exec chmod 640 {} ';'
 	find /etc/grafana -type d -exec chmod 755 {} ';'
 
+  # make sure there is a /var/run/grafana dir on systemd systems
+  if [ -x /bin/systemctl ] ; then
+    mkdir -p $PID_FILE_DIR
+    chown -R $GRAFANA_USER:$GRAFANA_GROUP $PID_FILE_DIR
+  fi
+
   if [ -x /bin/systemctl ] ; then
     echo "### NOT starting on installation, please execute the following statements to configure grafana to start automatically using systemd"
     echo " sudo /bin/systemctl daemon-reload"
@@ -68,6 +75,12 @@ if [ $1 -eq 1 ] ; then
     echo " sudo service grafana-server start"
   fi
 elif [ $1 -ge 2 ] ; then
+  # make sure there is a /var/run/grafana dir on systemd systems
+  if [ -x /bin/systemctl ] ; then
+    mkdir -p $PID_FILE_DIR
+    chown -R $GRAFANA_USER:$GRAFANA_GROUP $PID_FILE_DIR
+  fi
+
   if [ "$RESTART_ON_UPGRADE" == "true" ]; then
     stopGrafana
     startGrafana

packaging/rpm/sysconfig/grafana-server

@@ -17,3 +17,6 @@ CONF_FILE=/etc/grafana/grafana.ini
 RESTART_ON_UPGRADE=true
 
 PLUGINS_DIR=/var/lib/grafana/plugins
+
+# Only used on systemd systems
+PID_FILE_DIR=/var/run/grafana

packaging/rpm/systemd/grafana-server.service

@@ -14,7 +14,7 @@ Restart=on-failure
 WorkingDirectory=/usr/share/grafana
 ExecStart=/usr/sbin/grafana-server                                        \
                             --config=${CONF_FILE}                         \
-                            --pidfile=${PID_FILE}                 \
+                            --pidfile=${PID_FILE_DIR}/grafana-server.pid  \
                             cfg:default.paths.logs=${LOG_DIR}             \
                             cfg:default.paths.data=${DATA_DIR}            \
                             cfg:default.paths.plugins=${PLUGINS_DIR}

pkg/cmd/grafana-server/main.go

@@ -3,10 +3,8 @@ package main
 import (
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/signal"
-	"path/filepath"
 	"runtime"
 	"runtime/trace"
 	"strconv"
@@ -16,7 +14,6 @@ import (
 	"net/http"
 	_ "net/http/pprof"
 
-	"github.com/grafana/grafana/pkg/log"
 	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/setting"
@@ -87,46 +84,11 @@ func main() {
 	server.Start()
 }
 
-func initRuntime() {
-	err := setting.NewConfigContext(&setting.CommandLineArgs{
-		Config:   *configFile,
-		HomePath: *homePath,
-		Args:     flag.Args(),
-	})
-
-	if err != nil {
-		log.Fatal(3, err.Error())
-	}
-
-	logger := log.New("main")
-	logger.Info("Starting Grafana", "version", version, "commit", commit, "compiled", time.Unix(setting.BuildStamp, 0))
-
-	setting.LogConfigurationInfo()
-}
-
 func initSql() {
 	sqlstore.NewEngine()
 	sqlstore.EnsureAdminUser()
 }
 
-func writePIDFile() {
-	if *pidFile == "" {
-		return
-	}
-
-	// Ensure the required directory structure exists.
-	err := os.MkdirAll(filepath.Dir(*pidFile), 0700)
-	if err != nil {
-		log.Fatal(3, "Failed to verify pid directory", err)
-	}
-
-	// Retrieve the PID and write it.
-	pid := strconv.Itoa(os.Getpid())
-	if err := ioutil.WriteFile(*pidFile, []byte(pid), 0644); err != nil {
-		log.Fatal(3, "Failed to write pidfile", err)
-	}
-}
-
 func listenToSystemSignals(server models.GrafanaServer) {
 	signalChan := make(chan os.Signal, 1)
 	ignoreChan := make(chan os.Signal, 1)

pkg/cmd/grafana-server/server.go

@@ -2,7 +2,12 @@ package main
 
 import (
 	"context"
+	"flag"
+	"io/ioutil"
 	"os"
+	"path/filepath"
+	"strconv"
+	"time"
 
 	"golang.org/x/sync/errgroup"
 
@@ -45,8 +50,9 @@ type GrafanaServerImpl struct {
 func (g *GrafanaServerImpl) Start() {
 	go listenToSystemSignals(g)
 
-	writePIDFile()
-	initRuntime()
+	g.initLogging()
+	g.writePIDFile()
+
 	initSql()
 	metrics.Init()
 	search.Init()
@@ -74,6 +80,22 @@ func (g *GrafanaServerImpl) Start() {
 	g.startHttpServer()
 }
 
+func (g *GrafanaServerImpl) initLogging() {
+	err := setting.NewConfigContext(&setting.CommandLineArgs{
+		Config:   *configFile,
+		HomePath: *homePath,
+		Args:     flag.Args(),
+	})
+
+	if err != nil {
+		g.log.Error(err.Error())
+		os.Exit(1)
+	}
+
+	g.log.Info("Starting Grafana", "version", version, "commit", commit, "compiled", time.Unix(setting.BuildStamp, 0))
+	setting.LogConfigurationInfo()
+}
+
 func (g *GrafanaServerImpl) startHttpServer() {
 	g.httpServer = api.NewHttpServer()
 
@@ -101,3 +123,23 @@ func (g *GrafanaServerImpl) Shutdown(code int, reason string) {
 	log.Close()
 	os.Exit(code)
 }
+
+func (g *GrafanaServerImpl) writePIDFile() {
+	if *pidFile == "" {
+		return
+	}
+
+	// Ensure the required directory structure exists.
+	err := os.MkdirAll(filepath.Dir(*pidFile), 0700)
+	if err != nil {
+		g.log.Error("Failed to verify pid directory", "error", err)
+		os.Exit(1)
+	}
+
+	// Retrieve the PID and write it.
+	pid := strconv.Itoa(os.Getpid())
+	if err := ioutil.WriteFile(*pidFile, []byte(pid), 0644); err != nil {
+		g.log.Error("Failed to write pidfile", "error", err)
+		os.Exit(1)
+	}
+}