diff --git a/.goreleaser.yml b/.goreleaser.yml
index d09cc43206..7fbc61ca4a 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -90,6 +90,9 @@ nfpms:
       - src: builder/files/genesis-testnet-v4.json
         dst: /etc/bor/genesis-testnet-v4.json
         type: config
+      - src: builder/files/config.toml
+        dst: /var/lib/bor/config.toml
+        type: config
 
     overrides:
       rpm:
diff --git a/builder/files/bor.service b/builder/files/bor.service
index da0338368c..4b628cbf6e 100644
--- a/builder/files/bor.service
+++ b/builder/files/bor.service
@@ -6,34 +6,7 @@
 [Service]
   Restart=on-failure
   RestartSec=5s
-  ExecStart=/usr/local/bin/bor server \
-    --chain=mumbai \
-    # --chain=mainnet \
-    --datadir /var/lib/bor/data \
-    --metrics \
-    --metrics.prometheus-addr="127.0.0.1:7071" \
-    --syncmode 'full' \
-    --miner.gasprice '30000000000' \
-    --miner.gaslimit '20000000' \
-    --miner.gastarget '20000000' \
-    --txpool.nolocals \
-    --txpool.accountslots 16 \
-    --txpool.globalslots 32768 \
-    --txpool.accountqueue 16 \
-    --txpool.globalqueue 32768 \
-    --txpool.pricelimit '30000000000' \
-    --txpool.lifetime '1h30m0s' \
-    --bootnodes "enode://0cb82b395094ee4a2915e9714894627de9ed8498fb881cec6db7c65e8b9a5bd7f2f25cc84e71e89d0947e51c76e85d0847de848c7782b13c0255247a6758178c@44.232.55.71:30303,enode://88116f4295f5a31538ae409e4d44ad40d22e44ee9342869e7d68bdec55b0f83c1530355ce8b41fbec0928a7d75a5745d528450d30aec92066ab6ba1ee351d710@159.203.9.164:30303"
-    # Validator params
-    # Uncomment and configure the following lines in case you run a validator. Don't forget to add backslash (\) 
-    # to previous command line.
-    # --keystore /var/lib/bor/keystore \
-    # --unlock [VALIDATOR ADDRESS] \
-    # --password /var/lib/bor/password.txt \
-    # --allow-insecure-unlock \
-    # --nodiscover --maxpeers 1 \
-    # --miner.etherbase [VALIDATOR ADDRESS] \
-    # --mine
+  ExecStart=/usr/local/bin/bor server -config="/var/lib/bor/config.toml"
   Type=simple
   User=ubuntu
   KillSignal=SIGINT
diff --git a/builder/files/config.toml b/builder/files/config.toml
new file mode 100644
index 0000000000..c55a143ed7
--- /dev/null
+++ b/builder/files/config.toml
@@ -0,0 +1,44 @@
+# chain = "mumbai"
+chain = "mainnet"
+datadir = "/var/lib/bor/data"
+syncmode = "full"
+
+[telemetry]
+metrics = true
+prometheus-addr = "127.0.0.1:7071"
+
+[miner]
+# *** Validator params
+# *** Uncomment and configure the following lines in case you run a validator.
+# mine = true
+# etherbase = "VALIDATOR ADDRESS"
+gasprice = "30000000000"
+gasceil = 20000000
+
+
+[txpool]
+accountqueue = 16
+accountslots = 16
+globalqueue = 32768
+globalslots = 32768
+lifetime = "1h30m0s"
+nolocals = true
+pricelimit = 30000000000
+
+[p2p]
+# *** Validator params
+# *** Uncomment and configure the following lines in case you run a validator.
+# nodiscover = true
+# maxpeers = 1
+  [p2p.discovery]
+  bootnodes = ["enode://0cb82b395094ee4a2915e9714894627de9ed8498fb881cec6db7c65e8b9a5bd7f2f25cc84e71e89d0947e51c76e85d0847de848c7782b13c0255247a6758178c@44.232.55.71:30303", "enode://88116f4295f5a31538ae409e4d44ad40d22e44ee9342869e7d68bdec55b0f83c1530355ce8b41fbec0928a7d75a5745d528450d30aec92066ab6ba1ee351d710@159.203.9.164:30303"]
+
+# *** Validator params
+# *** Uncomment and configure the following lines in case you run a validator.
+
+# keystore = "/var/lib/bor/keystore"
+
+# [accounts]
+# allow-insecure-unlock = true
+# password = "/var/lib/bor/password.txt"
+# unlock = ["VALIDATOR ADDRESS"]
\ No newline at end of file
diff --git a/docs/cli/README.md b/docs/cli/README.md
index d92a7b5a05..3bc3daddc5 100644
--- a/docs/cli/README.md
+++ b/docs/cli/README.md
@@ -26,6 +26,8 @@
 
 - [```debug pprof```](./debug_pprof.md)
 
+- [```dumpconfig```](./dumpconfig.md)
+
 - [```fingerprint```](./fingerprint.md)
 
 - [```peers```](./peers.md)
diff --git a/docs/cli/dumpconfig.md b/docs/cli/dumpconfig.md
new file mode 100644
index 0000000000..0383c47310
--- /dev/null
+++ b/docs/cli/dumpconfig.md
@@ -0,0 +1,3 @@
+# Dumpconfig
+
+The ```bor dumpconfig <your-favourite-flags>``` command will export the user provided flags into a configuration file
\ No newline at end of file
diff --git a/docs/config.md b/docs/config.md
index 4f4dec157b..196a0bf388 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -1,133 +1,144 @@
 
 # Config
 
-Toml files format used in geth are being deprecated.
-
-Bor uses uses JSON and [HCL](https://github.com/hashicorp/hcl) formats to create configuration files. This is the format in HCL alongside the default values:
-
+- The `bor dumpconfig` command prints the default configurations, in the TOML format, on the terminal.
+    - One can `pipe (>)` this to a file (say `config.toml`) and use it to start bor.
+        - Command to provide a config file: `bor server -config config.toml`
+- Bor uses TOML, HCL, and JSON format config files.
+- This is the format of the config file in TOML:
+    - **NOTE: The values of these following flags are just for reference**
+    - `config.toml` file:
 ```
 chain = "mainnet"
-log-level = "info"
-data-dir = ""
-sync-mode = "fast"
-gc-mode = "full"
+identity = "myIdentity"
+log-level = "INFO"
+datadir = "/var/lib/bor/data"
+keystore = "path/to/keystore"
+syncmode = "full"
+gcmode = "full"
 snapshot = true
 ethstats = ""
-whitelist = {}
-
-p2p {
-    max-peers = 30
-    max-pend-peers = 50
-    bind = "0.0.0.0"
-    port = 30303
-    no-discover = false
-    nat = "any"
-    discovery {
-        v5-enabled = false
-        bootnodes = []
-        bootnodesv4 = []
-        bootnodesv5 = []
-        staticNodes = []
-        trustedNodes = []
-        dns = []
-    }
-}
-
-heimdall {
-    url = "http://localhost:1317"
-    without = false
-}
-
-txpool {
-    locals = []
-    no-locals = false
-    journal = ""
-    rejournal = "1h"
-    price-limit = 1
-    price-bump = 10
-    account-slots = 16
-    global-slots = 4096
-    account-queue = 64
-    global-queue = 1024
-    lifetime = "3h"
-}
-
-sealer {
-    enabled = false
-    etherbase = ""
-    gas-ceil = 8000000
-    extra-data = ""
-}
-
-gpo {
-    blocks = 20
-    percentile = 60
-}
-
-jsonrpc {
-    ipc-disable = false
-    ipc-path = ""
-    modules = ["web3", "net"]
-    cors = ["*"]
-    vhost = ["*"]
-    
-    http {
-        enabled = false
-        port = 8545
-        prefix = ""
-        host = "localhost"
-    }
-
-    ws {
-        enabled = false
-        port = 8546
-        prefix = ""
-        host = "localhost"
-    }
-
-    graphqh {
-        enabled = false
-    }
-}
-
-telemetry {
-    enabled = false
-    expensive = false
-
-    influxdb {
-        v1-enabled = false
-        endpoint = ""
-        database = ""
-        username = ""
-        password = ""
-        v2-enabled = false
-        token = ""
-        bucket = ""
-        organization = ""
-    }
-}
-
-cache {
-    cache = 1024
-    perc-database = 50
-    perc-trie = 15
-    perc-gc = 25
-    perc-snapshot = 10
-    journal = "triecache"
-    rejournal = "60m"
-    no-prefetch = false
-    preimages = false
-    tx-lookup-limit = 2350000
-}
-
-accounts {
-    unlock = []
-    password-file = ""
-    allow-insecure-unlock = false
-    use-lightweight-kdf = false
-}
-
-grpc {
-    addr = ":3131"
-}
+
+[p2p]
+maxpeers = 30
+maxpendpeers = 50
+bind = "0.0.0.0"
+port = 30303
+nodiscover = false
+nat = "any"
+
+[p2p.discovery]
+v5disc = false
+bootnodes = ["enode://d860a01f9722d78051619d1e2351aba3f43f943f6f00718d1b9baa4101932a1f5011f16bb2b1bb35db20d6fe28fa0bf09636d26a87d31de9ec6203eeedb1f666@18.138.108.67:30303", "enode://22a8232c3abc76a16ae9d6c3b164f98775fe226f0917b0ca871128a74a8e9630b458460865bab457221f1d448dd9791d24c4e5d88786180ac185df813a68d4de@3.209.45.79:30303"]
+bootnodesv4 = []
+bootnodesv5 = ["enr:-KG4QOtcP9X1FbIMOe17QNMKqDxCpm14jcX5tiOE4_TyMrFqbmhPZHK_ZPG2Gxb1GE2xdtodOfx9-cgvNtxnRyHEmC0ghGV0aDKQ9aX9QgAAAAD__________4JpZIJ2NIJpcIQDE8KdiXNlY3AyNTZrMaEDhpehBDbZjM_L9ek699Y7vhUJ-eAdMyQW_Fil522Y0fODdGNwgiMog3VkcIIjKA", "enr:-KG4QDyytgmE4f7AnvW-ZaUOIi9i79qX4JwjRAiXBZCU65wOfBu-3Nb5I7b_Rmg3KCOcZM_C3y5pg7EBU5XGrcLTduQEhGV0aDKQ9aX9QgAAAAD__________4JpZIJ2NIJpcIQ2_DUbiXNlY3AyNTZrMaEDKnz_-ps3UUOfHWVYaskI5kWYO_vtYMGYCQRAR3gHDouDdGNwgiMog3VkcIIjKA"]
+static-nodes = ["enode://8499da03c47d637b20eee24eec3c356c9a2e6148d6fe25ca195c7949ab8ec2c03e3556126b0d7ed644675e78c4318b08691b7b57de10e5f0d40d05b09238fa0a@52.187.207.27:30303"]
+trusted-nodes = ["enode://2b252ab6a1d0f971d9722cb839a42cb81db019ba44c08754628ab4a823487071b5695317c8ccd085219c3a03af063495b2f1da8d18218da2d6a82981b45e6ffc@65.108.70.101:30303"]
+dns = []
+
+[heimdall]
+url = "http://localhost:1317"
+"bor.without" = false
+
+[txpool]
+locals = ["$ADDRESS1", "$ADDRESS2"]
+nolocals = false
+journal = ""
+rejournal = "1h0m0s"
+pricelimit = 30000000000
+pricebump = 10
+accountslots = 16
+globalslots = 32768
+accountqueue = 16
+globalqueue = 32768
+lifetime = "3h0m0s"
+
+[miner]
+mine = false
+etherbase = ""
+extradata = ""
+gaslimit = 20000000
+gasprice = "30000000000"
+
+[jsonrpc]
+ipcdisable = false
+ipcpath = "/var/lib/bor/bor.ipc"
+gascap = 50000000
+txfeecap = 5e+00
+
+[jsonrpc.http]
+enabled = false
+port = 8545
+prefix = ""
+host = "localhost"
+api = ["eth", "net", "web3", "txpool", "bor"]
+vhosts = ["*"]
+corsdomain = ["*"]
+
+[jsonrpc.ws]
+enabled = false
+port = 8546
+prefix = ""
+host = "localhost"
+api = ["web3", "net"]
+vhosts = ["*"]
+corsdomain = ["*"]
+
+[jsonrpc.graphql]
+enabled = false
+port = 0
+prefix = ""
+host = ""
+api = []
+vhosts = ["*"]
+corsdomain = ["*"]
+
+[gpo]
+blocks = 20
+percentile = 60
+maxprice = "5000000000000"
+ignoreprice = "2"
+
+[telemetry]
+metrics = false
+expensive = false
+prometheus-addr = ""
+opencollector-endpoint = ""
+
+[telemetry.influx]
+influxdb = false
+endpoint = ""
+database = ""
+username = ""
+password = ""
+influxdbv2 = false
+token = ""
+bucket = ""
+organization = ""
+
+[cache]
+cache = 1024
+gc = 25
+snapshot = 10
+database = 50
+trie = 15
+journal = "triecache"
+rejournal = "1h0m0s"
+noprefetch = false
+preimages = false
+txlookuplimit = 2350000
+
+[accounts]
+unlock = ["$ADDRESS1", "$ADDRESS2"]
+password = "path/to/password.txt"
+allow-insecure-unlock = false
+lightkdf = false
+disable-bor-wallet = false
+
+[grpc]
+addr = ":3131"
+
+[developer]
+dev = false
+period = 0
 ```
diff --git a/go.mod b/go.mod
index 1b452a67a1..3f90695d47 100644
--- a/go.mod
+++ b/go.mod
@@ -83,6 +83,7 @@ require (
 require (
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v0.21.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v0.8.3 // indirect
+	github.com/BurntSushi/toml v1.1.0 // indirect
 	github.com/Masterminds/goutils v1.1.0 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/Masterminds/sprig v2.22.0+incompatible // indirect
diff --git a/go.sum b/go.sum
index 374ab3066e..fc58b621e6 100644
--- a/go.sum
+++ b/go.sum
@@ -25,6 +25,8 @@ github.com/Azure/azure-sdk-for-go/sdk/internal v0.8.3/go.mod h1:KLF4gFr6DcKFZwSu
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.3.0 h1:Px2UA+2RvSSvv+RvJNuUB6n7rs5Wsel4dXLe90Um2n4=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.3.0/go.mod h1:tPaiy8S5bQ+S5sOiDlINkp7+Ef339+Nz5L5XO+cnOHo=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v1.1.0 h1:ksErzDEI1khOiGPgpwuI7x2ebx/uXQNw7xJpn9Eq1+I=
+github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg=
@@ -456,6 +458,10 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.2/go.mod h1:R6va5+xMeoiuVRoj+gSkQ7d3FALtqAAGI1FQKckRals=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 h1:epCh84lMvA70Z7CTTCmYQn2CKbY8j86K7/FAIr141uY=
 github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7/go.mod h1:q4W45IWZaF22tdD+VEXcAWRA037jwmWEB5VWYORlTpc=
 github.com/tinylib/msgp v1.0.2/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
diff --git a/internal/cli/command.go b/internal/cli/command.go
index 1ff95b410f..06127a9823 100644
--- a/internal/cli/command.go
+++ b/internal/cli/command.go
@@ -82,6 +82,11 @@ func Commands() map[string]MarkDownCommandFactory {
 				UI: ui,
 			}, nil
 		},
+		"dumpconfig": func() (MarkDownCommand, error) {
+			return &DumpconfigCommand{
+				Meta2: meta2,
+			}, nil
+		},
 		"debug": func() (MarkDownCommand, error) {
 			return &DebugCommand{
 				UI: ui,
diff --git a/internal/cli/dumpconfig.go b/internal/cli/dumpconfig.go
new file mode 100644
index 0000000000..3e4688fc24
--- /dev/null
+++ b/internal/cli/dumpconfig.go
@@ -0,0 +1,82 @@
+package cli
+
+import (
+	"reflect"
+	"strings"
+
+	"github.com/naoina/toml"
+
+	"github.com/ethereum/go-ethereum/internal/cli/server"
+)
+
+// These settings ensure that TOML keys use the same names as Go struct fields.
+var tomlSettings = toml.Config{
+	NormFieldName: func(rt reflect.Type, key string) string {
+		return key
+	},
+	FieldToKey: func(rt reflect.Type, field string) string {
+		return field
+	},
+}
+
+// DumpconfigCommand is for exporting user provided flags into a config file
+type DumpconfigCommand struct {
+	*Meta2
+}
+
+// MarkDown implements cli.MarkDown interface
+func (p *DumpconfigCommand) MarkDown() string {
+	items := []string{
+		"# Dumpconfig",
+		"The ```bor dumpconfig <your-favourite-flags>``` command will export the user provided flags into a configuration file",
+	}
+
+	return strings.Join(items, "\n\n")
+}
+
+// Help implements the cli.Command interface
+func (c *DumpconfigCommand) Help() string {
+	return `Usage: bor dumpconfig <your-favourite-flags>
+
+  This command will will export the user provided flags into a configuration file`
+}
+
+// Synopsis implements the cli.Command interface
+func (c *DumpconfigCommand) Synopsis() string {
+	return "Export configuration file"
+}
+
+// TODO: add flags for file location and format (toml, json, hcl) of the configuration file.
+
+// Run implements the cli.Command interface
+func (c *DumpconfigCommand) Run(args []string) int {
+	// Initialize an empty command instance to get flags
+	command := server.Command{}
+	flags := command.Flags()
+
+	if err := flags.Parse(args); err != nil {
+		c.UI.Error(err.Error())
+		return 1
+	}
+
+	userConfig := command.GetConfig()
+
+	// convert the big.Int and time.Duration fields to their corresponding Raw fields
+	userConfig.TxPool.RejournalRaw = userConfig.TxPool.Rejournal.String()
+	userConfig.TxPool.LifeTimeRaw = userConfig.TxPool.LifeTime.String()
+	userConfig.Sealer.GasPriceRaw = userConfig.Sealer.GasPrice.String()
+	userConfig.Gpo.MaxPriceRaw = userConfig.Gpo.MaxPrice.String()
+	userConfig.Gpo.IgnorePriceRaw = userConfig.Gpo.IgnorePrice.String()
+	userConfig.Cache.RejournalRaw = userConfig.Cache.Rejournal.String()
+
+	// Currently, the configurations (userConfig) is exported into `toml` file format.
+	out, err := tomlSettings.Marshal(&userConfig)
+	if err != nil {
+		c.UI.Error(err.Error())
+		return 1
+	}
+
+	c.UI.Output(string(out))
+
+	return 0
+}
diff --git a/internal/cli/flagset/flagset.go b/internal/cli/flagset/flagset.go
index 0c19fa9758..d9e204f0e4 100644
--- a/internal/cli/flagset/flagset.go
+++ b/internal/cli/flagset/flagset.go
@@ -180,14 +180,15 @@ func (b *BigIntFlag) Set(value string) error {
 	var ok bool
 	if strings.HasPrefix(value, "0x") {
 		num, ok = num.SetString(value[2:], 16)
+		*b.Value = *num
 	} else {
 		num, ok = num.SetString(value, 10)
+		*b.Value = *num
 	}
 
 	if !ok {
 		return fmt.Errorf("failed to set big int")
 	}
-	b.Value = num
 
 	return nil
 }
@@ -209,6 +210,19 @@ type SliceStringFlag struct {
 	Group   string
 }
 
+// SplitAndTrim splits input separated by a comma
+// and trims excessive white space from the substrings.
+func SplitAndTrim(input string) (ret []string) {
+	l := strings.Split(input, ",")
+	for _, r := range l {
+		if r = strings.TrimSpace(r); r != "" {
+			ret = append(ret, r)
+		}
+	}
+
+	return ret
+}
+
 func (i *SliceStringFlag) String() string {
 	if i.Value == nil {
 		return ""
@@ -219,7 +233,7 @@ func (i *SliceStringFlag) String() string {
 
 func (i *SliceStringFlag) Set(value string) error {
 	// overwritting insted of appending
-	*i.Value = strings.Split(value, ",")
+	*i.Value = SplitAndTrim(value)
 	return nil
 }
 
diff --git a/internal/cli/server/command.go b/internal/cli/server/command.go
index a0b8a6d87c..2995f10f69 100644
--- a/internal/cli/server/command.go
+++ b/internal/cli/server/command.go
@@ -7,8 +7,9 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/ethereum/go-ethereum/log"
 	"github.com/mitchellh/cli"
+
+	"github.com/ethereum/go-ethereum/log"
 )
 
 // Command is the command to start the sever
@@ -21,7 +22,7 @@ type Command struct {
 	// final configuration
 	config *Config
 
-	configFile []string
+	configFile string
 
 	srv *Server
 }
@@ -50,34 +51,57 @@ func (c *Command) Synopsis() string {
 	return "Run the Bor server"
 }
 
-// Run implements the cli.Command interface
-func (c *Command) Run(args []string) int {
+func (c *Command) extractFlags(args []string) error {
+	config := *DefaultConfig()
+
 	flags := c.Flags()
 	if err := flags.Parse(args); err != nil {
 		c.UI.Error(err.Error())
-		return 1
+		c.config = &config
+
+		return err
 	}
 
-	// read config file
-	config := DefaultConfig()
-	for _, configFile := range c.configFile {
-		cfg, err := readConfigFile(configFile)
+	// TODO: Check if this can be removed or not
+	// read cli flags
+	if err := config.Merge(c.cliConfig); err != nil {
+		c.UI.Error(err.Error())
+		c.config = &config
+
+		return err
+	}
+	// read if config file is provided, this will overwrite the cli flags, if provided
+	if c.configFile != "" {
+		log.Warn("Config File provided, this will overwrite the cli flags.", "configFile:", c.configFile)
+		cfg, err := readConfigFile(c.configFile)
 		if err != nil {
 			c.UI.Error(err.Error())
-			return 1
+			c.config = &config
+
+			return err
 		}
 		if err := config.Merge(cfg); err != nil {
 			c.UI.Error(err.Error())
-			return 1
+			c.config = &config
+
+			return err
 		}
 	}
-	if err := config.Merge(c.cliConfig); err != nil {
+
+	c.config = &config
+
+	return nil
+}
+
+// Run implements the cli.Command interface
+func (c *Command) Run(args []string) int {
+	err := c.extractFlags(args)
+	if err != nil {
 		c.UI.Error(err.Error())
 		return 1
 	}
-	c.config = config
 
-	srv, err := NewServer(config)
+	srv, err := NewServer(c.config)
 	if err != nil {
 		c.UI.Error(err.Error())
 		return 1
@@ -112,3 +136,8 @@ func (c *Command) handleSignals() int {
 	}
 	return 1
 }
+
+// GetConfig returns the user specified config
+func (c *Command) GetConfig() *Config {
+	return c.cliConfig
+}
diff --git a/internal/cli/server/command_test.go b/internal/cli/server/command_test.go
new file mode 100644
index 0000000000..9006559d0f
--- /dev/null
+++ b/internal/cli/server/command_test.go
@@ -0,0 +1,50 @@
+package server
+
+import (
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestFlags(t *testing.T) {
+	t.Parallel()
+
+	var c Command
+
+	args := []string{
+		"--txpool.rejournal", "30m0s",
+		"--txpool.lifetime", "30m0s",
+		"--miner.gasprice", "20000000000",
+		"--gpo.maxprice", "70000000000",
+		"--gpo.ignoreprice", "1",
+		"--cache.trie.rejournal", "40m0s",
+		"--dev",
+		"--dev.period", "2",
+		"--datadir", "./data",
+		"--maxpeers", "30",
+		"--requiredblocks", "a=b",
+		"--http.api", "eth,web3,bor",
+	}
+	err := c.extractFlags(args)
+
+	require.NoError(t, err)
+
+	txRe, _ := time.ParseDuration("30m0s")
+	txLt, _ := time.ParseDuration("30m0s")
+	caRe, _ := time.ParseDuration("40m0s")
+
+	require.Equal(t, c.config.DataDir, "./data")
+	require.Equal(t, c.config.Developer.Enabled, true)
+	require.Equal(t, c.config.Developer.Period, uint64(2))
+	require.Equal(t, c.config.TxPool.Rejournal, txRe)
+	require.Equal(t, c.config.TxPool.LifeTime, txLt)
+	require.Equal(t, c.config.Sealer.GasPrice, big.NewInt(20000000000))
+	require.Equal(t, c.config.Gpo.MaxPrice, big.NewInt(70000000000))
+	require.Equal(t, c.config.Gpo.IgnorePrice, big.NewInt(1))
+	require.Equal(t, c.config.Cache.Rejournal, caRe)
+	require.Equal(t, c.config.P2P.MaxPeers, uint64(30))
+	require.Equal(t, c.config.RequiredBlocks, map[string]string{"a": "b"})
+	require.Equal(t, c.config.JsonRPC.Http.API, []string{"eth", "web3", "bor"})
+}
diff --git a/internal/cli/server/config.go b/internal/cli/server/config.go
index fdf253a37e..819ab1aca5 100644
--- a/internal/cli/server/config.go
+++ b/internal/cli/server/config.go
@@ -14,6 +14,11 @@ import (
 
 	godebug "runtime/debug"
 
+	"github.com/hashicorp/hcl/v2/hclsimple"
+	"github.com/imdario/mergo"
+	"github.com/mitchellh/go-homedir"
+	gopsutil "github.com/shirou/gopsutil/mem"
+
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/accounts/keystore"
 	"github.com/ethereum/go-ethereum/common"
@@ -28,360 +33,356 @@ import (
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/params"
-	"github.com/hashicorp/hcl/v2/hclsimple"
-	"github.com/imdario/mergo"
-	"github.com/mitchellh/go-homedir"
-	gopsutil "github.com/shirou/gopsutil/mem"
 )
 
 type Config struct {
 	chain *chains.Chain
 
 	// Chain is the chain to sync with
-	Chain string `hcl:"chain,optional"`
+	Chain string `hcl:"chain,optional" toml:"chain,optional"`
 
 	// Identity of the node
-	Identity string `hcl:"identity,optional"`
+	Identity string `hcl:"identity,optional" toml:"identity,optional"`
 
 	// RequiredBlocks is a list of required (block number, hash) pairs to accept
-	RequiredBlocks map[string]string `hcl:"requiredblocks,optional"`
+	RequiredBlocks map[string]string `hcl:"requiredblocks,optional" toml:"requiredblocks,optional"`
 
 	// LogLevel is the level of the logs to put out
-	LogLevel string `hcl:"log-level,optional"`
+	LogLevel string `hcl:"log-level,optional" toml:"log-level,optional"`
 
 	// DataDir is the directory to store the state in
-	DataDir string `hcl:"data-dir,optional"`
+	DataDir string `hcl:"datadir,optional" toml:"datadir,optional"`
 
 	// KeyStoreDir is the directory to store keystores
-	KeyStoreDir string `hcl:"keystore-dir,optional"`
+	KeyStoreDir string `hcl:"keystore,optional" toml:"keystore,optional"`
 
 	// SyncMode selects the sync protocol
-	SyncMode string `hcl:"sync-mode,optional"`
+	SyncMode string `hcl:"syncmode,optional" toml:"syncmode,optional"`
 
 	// GcMode selects the garbage collection mode for the trie
-	GcMode string `hcl:"gc-mode,optional"`
+	GcMode string `hcl:"gcmode,optional" toml:"gcmode,optional"`
 
 	// Snapshot disables/enables the snapshot database mode
-	Snapshot bool `hcl:"snapshot,optional"`
+	Snapshot bool `hcl:"snapshot,optional" toml:"snapshot,optional"`
 
 	// Ethstats is the address of the ethstats server to send telemetry
-	Ethstats string `hcl:"ethstats,optional"`
+	Ethstats string `hcl:"ethstats,optional" toml:"ethstats,optional"`
 
 	// P2P has the p2p network related settings
-	P2P *P2PConfig `hcl:"p2p,block"`
+	P2P *P2PConfig `hcl:"p2p,block" toml:"p2p,block"`
 
 	// Heimdall has the heimdall connection related settings
-	Heimdall *HeimdallConfig `hcl:"heimdall,block"`
+	Heimdall *HeimdallConfig `hcl:"heimdall,block" toml:"heimdall,block"`
 
 	// TxPool has the transaction pool related settings
-	TxPool *TxPoolConfig `hcl:"txpool,block"`
+	TxPool *TxPoolConfig `hcl:"txpool,block" toml:"txpool,block"`
 
 	// Sealer has the validator related settings
-	Sealer *SealerConfig `hcl:"sealer,block"`
+	Sealer *SealerConfig `hcl:"miner,block" toml:"miner,block"`
 
 	// JsonRPC has the json-rpc related settings
-	JsonRPC *JsonRPCConfig `hcl:"jsonrpc,block"`
+	JsonRPC *JsonRPCConfig `hcl:"jsonrpc,block" toml:"jsonrpc,block"`
 
 	// Gpo has the gas price oracle related settings
-	Gpo *GpoConfig `hcl:"gpo,block"`
+	Gpo *GpoConfig `hcl:"gpo,block" toml:"gpo,block"`
 
 	// Telemetry has the telemetry related settings
-	Telemetry *TelemetryConfig `hcl:"telemetry,block"`
+	Telemetry *TelemetryConfig `hcl:"telemetry,block" toml:"telemetry,block"`
 
 	// Cache has the cache related settings
-	Cache *CacheConfig `hcl:"cache,block"`
+	Cache *CacheConfig `hcl:"cache,block" toml:"cache,block"`
 
 	// Account has the validator account related settings
-	Accounts *AccountsConfig `hcl:"accounts,block"`
+	Accounts *AccountsConfig `hcl:"accounts,block" toml:"accounts,block"`
 
 	// GRPC has the grpc server related settings
-	GRPC *GRPCConfig
+	GRPC *GRPCConfig `hcl:"grpc,block" toml:"grpc,block"`
 
 	// Developer has the developer mode related settings
-	Developer *DeveloperConfig
+	Developer *DeveloperConfig `hcl:"developer,block" toml:"developer,block"`
 }
 
 type P2PConfig struct {
 	// MaxPeers sets the maximum number of connected peers
-	MaxPeers uint64 `hcl:"max-peers,optional"`
+	MaxPeers uint64 `hcl:"maxpeers,optional" toml:"maxpeers,optional"`
 
 	// MaxPendPeers sets the maximum number of pending connected peers
-	MaxPendPeers uint64 `hcl:"max-pend-peers,optional"`
+	MaxPendPeers uint64 `hcl:"maxpendpeers,optional" toml:"maxpendpeers,optional"`
 
 	// Bind is the bind address
-	Bind string `hcl:"bind,optional"`
+	Bind string `hcl:"bind,optional" toml:"bind,optional"`
 
 	// Port is the port number
-	Port uint64 `hcl:"port,optional"`
+	Port uint64 `hcl:"port,optional" toml:"port,optional"`
 
 	// NoDiscover is used to disable discovery
-	NoDiscover bool `hcl:"no-discover,optional"`
+	NoDiscover bool `hcl:"nodiscover,optional" toml:"nodiscover,optional"`
 
 	// NAT it used to set NAT options
-	NAT string `hcl:"nat,optional"`
+	NAT string `hcl:"nat,optional" toml:"nat,optional"`
 
 	// Discovery has the p2p discovery related settings
-	Discovery *P2PDiscovery `hcl:"discovery,block"`
+	Discovery *P2PDiscovery `hcl:"discovery,block" toml:"discovery,block"`
 }
 
 type P2PDiscovery struct {
 	// V5Enabled is used to enable disc v5 discovery mode
-	V5Enabled bool `hcl:"v5-enabled,optional"`
+	V5Enabled bool `hcl:"v5disc,optional" toml:"v5disc,optional"`
 
 	// Bootnodes is the list of initial bootnodes
-	Bootnodes []string `hcl:"bootnodes,optional"`
+	Bootnodes []string `hcl:"bootnodes,optional" toml:"bootnodes,optional"`
 
 	// BootnodesV4 is the list of initial v4 bootnodes
-	BootnodesV4 []string `hcl:"bootnodesv4,optional"`
+	BootnodesV4 []string `hcl:"bootnodesv4,optional" toml:"bootnodesv4,optional"`
 
 	// BootnodesV5 is the list of initial v5 bootnodes
-	BootnodesV5 []string `hcl:"bootnodesv5,optional"`
+	BootnodesV5 []string `hcl:"bootnodesv5,optional" toml:"bootnodesv5,optional"`
 
 	// StaticNodes is the list of static nodes
-	StaticNodes []string `hcl:"static-nodes,optional"`
+	StaticNodes []string `hcl:"static-nodes,optional" toml:"static-nodes,optional"`
 
 	// TrustedNodes is the list of trusted nodes
-	TrustedNodes []string `hcl:"trusted-nodes,optional"`
+	TrustedNodes []string `hcl:"trusted-nodes,optional" toml:"trusted-nodes,optional"`
 
 	// DNS is the list of enrtree:// URLs which will be queried for nodes to connect to
-	DNS []string `hcl:"dns,optional"`
+	DNS []string `hcl:"dns,optional" toml:"dns,optional"`
 }
 
 type HeimdallConfig struct {
 	// URL is the url of the heimdall server
-	URL string `hcl:"url,optional"`
+	URL string `hcl:"url,optional" toml:"url,optional"`
 
 	// Without is used to disable remote heimdall during testing
-	Without bool `hcl:"without,optional"`
+	Without bool `hcl:"bor.without,optional" toml:"bor.without,optional"`
 }
 
 type TxPoolConfig struct {
 	// Locals are the addresses that should be treated by default as local
-	Locals []string `hcl:"locals,optional"`
+	Locals []string `hcl:"locals,optional" toml:"locals,optional"`
 
 	// NoLocals enables whether local transaction handling should be disabled
-	NoLocals bool `hcl:"no-locals,optional"`
+	NoLocals bool `hcl:"nolocals,optional" toml:"nolocals,optional"`
 
 	// Journal is the path to store local transactions to survive node restarts
-	Journal string `hcl:"journal,optional"`
+	Journal string `hcl:"journal,optional" toml:"journal,optional"`
 
 	// Rejournal is the time interval to regenerate the local transaction journal
-	Rejournal    time.Duration
-	RejournalRaw string `hcl:"rejournal,optional"`
+	Rejournal    time.Duration `hcl:"-,optional" toml:"-,optional"`
+	RejournalRaw string        `hcl:"rejournal,optional" toml:"rejournal,optional"`
 
 	// PriceLimit is the minimum gas price to enforce for acceptance into the pool
-	PriceLimit uint64 `hcl:"price-limit,optional"`
+	PriceLimit uint64 `hcl:"pricelimit,optional" toml:"pricelimit,optional"`
 
 	// PriceBump is the minimum price bump percentage to replace an already existing transaction (nonce)
-	PriceBump uint64 `hcl:"price-bump,optional"`
+	PriceBump uint64 `hcl:"pricebump,optional" toml:"pricebump,optional"`
 
 	// AccountSlots is the number of executable transaction slots guaranteed per account
-	AccountSlots uint64 `hcl:"account-slots,optional"`
+	AccountSlots uint64 `hcl:"accountslots,optional" toml:"accountslots,optional"`
 
 	// GlobalSlots is the maximum number of executable transaction slots for all accounts
-	GlobalSlots uint64 `hcl:"global-slots,optional"`
+	GlobalSlots uint64 `hcl:"globalslots,optional" toml:"globalslots,optional"`
 
 	// AccountQueue is the maximum number of non-executable transaction slots permitted per account
-	AccountQueue uint64 `hcl:"account-queue,optional"`
+	AccountQueue uint64 `hcl:"accountqueue,optional" toml:"accountqueue,optional"`
 
 	// GlobalQueueis the maximum number of non-executable transaction slots for all accounts
-	GlobalQueue uint64 `hcl:"global-queue,optional"`
+	GlobalQueue uint64 `hcl:"globalqueue,optional" toml:"globalqueue,optional"`
 
-	// Lifetime is the maximum amount of time non-executable transaction are queued
-	LifeTime    time.Duration
-	LifeTimeRaw string `hcl:"lifetime,optional"`
+	// lifetime is the maximum amount of time non-executable transaction are queued
+	LifeTime    time.Duration `hcl:"-,optional" toml:"-,optional"`
+	LifeTimeRaw string        `hcl:"lifetime,optional" toml:"lifetime,optional"`
 }
 
 type SealerConfig struct {
 	// Enabled is used to enable validator mode
-	Enabled bool `hcl:"enabled,optional"`
+	Enabled bool `hcl:"mine,optional" toml:"mine,optional"`
 
 	// Etherbase is the address of the validator
-	Etherbase string `hcl:"etherbase,optional"`
+	Etherbase string `hcl:"etherbase,optional" toml:"etherbase,optional"`
 
 	// ExtraData is the block extra data set by the miner
-	ExtraData string `hcl:"extra-data,optional"`
+	ExtraData string `hcl:"extradata,optional" toml:"extradata,optional"`
 
 	// GasCeil is the target gas ceiling for mined blocks.
-	GasCeil uint64 `hcl:"gas-ceil,optional"`
+	GasCeil uint64 `hcl:"gaslimit,optional" toml:"gaslimit,optional"`
 
 	// GasPrice is the minimum gas price for mining a transaction
-	GasPrice    *big.Int
-	GasPriceRaw string `hcl:"gas-price,optional"`
+	GasPrice    *big.Int `hcl:"-,optional" toml:"-,optional"`
+	GasPriceRaw string   `hcl:"gasprice,optional" toml:"gasprice,optional"`
 }
 
 type JsonRPCConfig struct {
 	// IPCDisable enables whether ipc is enabled or not
-	IPCDisable bool `hcl:"ipc-disable,optional"`
+	IPCDisable bool `hcl:"ipcdisable,optional" toml:"ipcdisable,optional"`
 
 	// IPCPath is the path of the ipc endpoint
-	IPCPath string `hcl:"ipc-path,optional"`
+	IPCPath string `hcl:"ipcpath,optional" toml:"ipcpath,optional"`
 
 	// GasCap is the global gas cap for eth-call variants.
-	GasCap uint64 `hcl:"gas-cap,optional"`
+	GasCap uint64 `hcl:"gascap,optional" toml:"gascap,optional"`
 
 	// TxFeeCap is the global transaction fee cap for send-transaction variants
-	TxFeeCap float64 `hcl:"tx-fee-cap,optional"`
+	TxFeeCap float64 `hcl:"txfeecap,optional" toml:"txfeecap,optional"`
 
 	// Http has the json-rpc http related settings
-	Http *APIConfig `hcl:"http,block"`
+	Http *APIConfig `hcl:"http,block" toml:"http,block"`
 
 	// Ws has the json-rpc websocket related settings
-	Ws *APIConfig `hcl:"ws,block"`
+	Ws *APIConfig `hcl:"ws,block" toml:"ws,block"`
 
 	// Graphql has the json-rpc graphql related settings
-	Graphql *APIConfig `hcl:"graphql,block"`
+	Graphql *APIConfig `hcl:"graphql,block" toml:"graphql,block"`
 }
 
 type GRPCConfig struct {
 	// Addr is the bind address for the grpc rpc server
-	Addr string
+	Addr string `hcl:"addr,optional" toml:"addr,optional"`
 }
 
 type APIConfig struct {
 	// Enabled selects whether the api is enabled
-	Enabled bool `hcl:"enabled,optional"`
+	Enabled bool `hcl:"enabled,optional" toml:"enabled,optional"`
 
 	// Port is the port number for this api
-	Port uint64 `hcl:"port,optional"`
+	Port uint64 `hcl:"port,optional" toml:"port,optional"`
 
 	// Prefix is the http prefix to expose this api
-	Prefix string `hcl:"prefix,optional"`
+	Prefix string `hcl:"prefix,optional" toml:"prefix,optional"`
 
 	// Host is the address to bind the api
-	Host string `hcl:"host,optional"`
+	Host string `hcl:"host,optional" toml:"host,optional"`
 
-	// Modules is the list of enabled api modules
-	API []string `hcl:"modules,optional"`
+	// API is the list of enabled api modules
+	API []string `hcl:"api,optional" toml:"api,optional"`
 
 	// VHost is the list of valid virtual hosts
-	VHost []string `hcl:"vhost,optional"`
+	VHost []string `hcl:"vhosts,optional" toml:"vhosts,optional"`
 
 	// Cors is the list of Cors endpoints
-	Cors []string `hcl:"cors,optional"`
+	Cors []string `hcl:"corsdomain,optional" toml:"corsdomain,optional"`
 }
 
 type GpoConfig struct {
 	// Blocks is the number of blocks to track to compute the price oracle
-	Blocks uint64 `hcl:"blocks,optional"`
+	Blocks uint64 `hcl:"blocks,optional" toml:"blocks,optional"`
 
 	// Percentile sets the weights to new blocks
-	Percentile uint64 `hcl:"percentile,optional"`
+	Percentile uint64 `hcl:"percentile,optional" toml:"percentile,optional"`
 
 	// MaxPrice is an upper bound gas price
-	MaxPrice    *big.Int
-	MaxPriceRaw string `hcl:"max-price,optional"`
+	MaxPrice    *big.Int `hcl:"-,optional" toml:"-,optional"`
+	MaxPriceRaw string   `hcl:"maxprice,optional" toml:"maxprice,optional"`
 
 	// IgnorePrice is a lower bound gas price
-	IgnorePrice    *big.Int
-	IgnorePriceRaw string `hcl:"ignore-price,optional"`
+	IgnorePrice    *big.Int `hcl:"-,optional" toml:"-,optional"`
+	IgnorePriceRaw string   `hcl:"ignoreprice,optional" toml:"ignoreprice,optional"`
 }
 
 type TelemetryConfig struct {
 	// Enabled enables metrics
-	Enabled bool `hcl:"enabled,optional"`
+	Enabled bool `hcl:"metrics,optional" toml:"metrics,optional"`
 
 	// Expensive enables expensive metrics
-	Expensive bool `hcl:"expensive,optional"`
+	Expensive bool `hcl:"expensive,optional" toml:"expensive,optional"`
 
 	// InfluxDB has the influxdb related settings
-	InfluxDB *InfluxDBConfig `hcl:"influx,block"`
+	InfluxDB *InfluxDBConfig `hcl:"influx,block" toml:"influx,block"`
 
 	// Prometheus Address
-	PrometheusAddr string `hcl:"prometheus-addr,optional"`
+	PrometheusAddr string `hcl:"prometheus-addr,optional" toml:"prometheus-addr,optional"`
 
 	// Open collector endpoint
-	OpenCollectorEndpoint string `hcl:"opencollector-endpoint,optional"`
+	OpenCollectorEndpoint string `hcl:"opencollector-endpoint,optional" toml:"opencollector-endpoint,optional"`
 }
 
 type InfluxDBConfig struct {
 	// V1Enabled enables influx v1 mode
-	V1Enabled bool `hcl:"v1-enabled,optional"`
+	V1Enabled bool `hcl:"influxdb,optional" toml:"influxdb,optional"`
 
 	// Endpoint is the url endpoint of the influxdb service
-	Endpoint string `hcl:"endpoint,optional"`
+	Endpoint string `hcl:"endpoint,optional" toml:"endpoint,optional"`
 
 	// Database is the name of the database in Influxdb to store the metrics.
-	Database string `hcl:"database,optional"`
+	Database string `hcl:"database,optional" toml:"database,optional"`
 
 	// Enabled is the username to authorize access to Influxdb
-	Username string `hcl:"username,optional"`
+	Username string `hcl:"username,optional" toml:"username,optional"`
 
 	// Password is the password to authorize access to Influxdb
-	Password string `hcl:"password,optional"`
+	Password string `hcl:"password,optional" toml:"password,optional"`
 
 	// Tags are tags attaches to all generated metrics
-	Tags map[string]string `hcl:"tags,optional"`
+	Tags map[string]string `hcl:"tags,optional" toml:"tags,optional"`
 
 	// Enabled enables influx v2 mode
-	V2Enabled bool `hcl:"v2-enabled,optional"`
+	V2Enabled bool `hcl:"influxdbv2,optional" toml:"influxdbv2,optional"`
 
 	// Token is the token to authorize access to Influxdb V2.
-	Token string `hcl:"token,optional"`
+	Token string `hcl:"token,optional" toml:"token,optional"`
 
 	// Bucket is the bucket to store metrics in Influxdb V2.
-	Bucket string `hcl:"bucket,optional"`
+	Bucket string `hcl:"bucket,optional" toml:"bucket,optional"`
 
 	// Organization is the name of the organization for Influxdb V2.
-	Organization string `hcl:"organization,optional"`
+	Organization string `hcl:"organization,optional" toml:"organization,optional"`
 }
 
 type CacheConfig struct {
 	// Cache is the amount of cache of the node
-	Cache uint64 `hcl:"cache,optional"`
+	Cache uint64 `hcl:"cache,optional" toml:"cache,optional"`
 
 	// PercGc is percentage of cache used for garbage collection
-	PercGc uint64 `hcl:"perc-gc,optional"`
+	PercGc uint64 `hcl:"gc,optional" toml:"gc,optional"`
 
 	// PercSnapshot is percentage of cache used for snapshots
-	PercSnapshot uint64 `hcl:"perc-snapshot,optional"`
+	PercSnapshot uint64 `hcl:"snapshot,optional" toml:"snapshot,optional"`
 
 	// PercDatabase is percentage of cache used for the database
-	PercDatabase uint64 `hcl:"perc-database,optional"`
+	PercDatabase uint64 `hcl:"database,optional" toml:"database,optional"`
 
 	// PercTrie is percentage of cache used for the trie
-	PercTrie uint64 `hcl:"perc-trie,optional"`
+	PercTrie uint64 `hcl:"trie,optional" toml:"trie,optional"`
 
 	// Journal is the disk journal directory for trie cache to survive node restarts
-	Journal string `hcl:"journal,optional"`
+	Journal string `hcl:"journal,optional" toml:"journal,optional"`
 
 	// Rejournal is the time interval to regenerate the journal for clean cache
-	Rejournal    time.Duration
-	RejournalRaw string `hcl:"rejournal,optional"`
+	Rejournal    time.Duration `hcl:"-,optional" toml:"-,optional"`
+	RejournalRaw string        `hcl:"rejournal,optional" toml:"rejournal,optional"`
 
 	// NoPrefetch is used to disable prefetch of tries
-	NoPrefetch bool `hcl:"no-prefetch,optional"`
+	NoPrefetch bool `hcl:"noprefetch,optional" toml:"noprefetch,optional"`
 
 	// Preimages is used to enable the track of hash preimages
-	Preimages bool `hcl:"preimages,optional"`
+	Preimages bool `hcl:"preimages,optional" toml:"preimages,optional"`
 
 	// TxLookupLimit sets the maximum number of blocks from head whose tx indices are reserved.
-	TxLookupLimit uint64 `hcl:"tx-lookup-limit,optional"`
+	TxLookupLimit uint64 `hcl:"txlookuplimit,optional" toml:"txlookuplimit,optional"`
 }
 
 type AccountsConfig struct {
 	// Unlock is the list of addresses to unlock in the node
-	Unlock []string `hcl:"unlock,optional"`
+	Unlock []string `hcl:"unlock,optional" toml:"unlock,optional"`
 
 	// PasswordFile is the file where the account passwords are stored
-	PasswordFile string `hcl:"password-file,optional"`
+	PasswordFile string `hcl:"password,optional" toml:"password,optional"`
 
 	// AllowInsecureUnlock allows user to unlock accounts in unsafe http environment.
-	AllowInsecureUnlock bool `hcl:"allow-insecure-unlock,optional"`
+	AllowInsecureUnlock bool `hcl:"allow-insecure-unlock,optional" toml:"allow-insecure-unlock,optional"`
 
 	// UseLightweightKDF enables a faster but less secure encryption of accounts
-	UseLightweightKDF bool `hcl:"use-lightweight-kdf,optional"`
+	UseLightweightKDF bool `hcl:"lightkdf,optional" toml:"lightkdf,optional"`
 
 	// DisableBorWallet disables the personal wallet endpoints
-	DisableBorWallet bool `hcl:"disable-bor-wallet,optional"`
+	DisableBorWallet bool `hcl:"disable-bor-wallet,optional" toml:"disable-bor-wallet,optional"`
 }
 
 type DeveloperConfig struct {
 	// Enabled enables the developer mode
-	Enabled bool `hcl:"dev,optional"`
+	Enabled bool `hcl:"dev,optional" toml:"dev,optional"`
 
 	// Period is the block period to use in developer mode
-	Period uint64 `hcl:"period,optional"`
+	Period uint64 `hcl:"period,optional" toml:"period,optional"`
 }
 
 func DefaultConfig() *Config {
@@ -419,14 +420,14 @@ func DefaultConfig() *Config {
 			Locals:       []string{},
 			NoLocals:     false,
 			Journal:      "",
-			Rejournal:    time.Duration(1 * time.Hour),
+			Rejournal:    1 * time.Hour,
 			PriceLimit:   30000000000,
 			PriceBump:    10,
 			AccountSlots: 16,
 			GlobalSlots:  32768,
 			AccountQueue: 16,
 			GlobalQueue:  32768,
-			LifeTime:     time.Duration(3 * time.Hour),
+			LifeTime:     3 * time.Hour,
 		},
 		Sealer: &SealerConfig{
 			Enabled:   false,
@@ -526,7 +527,7 @@ func (c *Config) fillBigInt() error {
 	}{
 		{"gpo.maxprice", &c.Gpo.MaxPrice, &c.Gpo.MaxPriceRaw},
 		{"gpo.ignoreprice", &c.Gpo.IgnorePrice, &c.Gpo.IgnorePriceRaw},
-		{"sealer.gasprice", &c.Sealer.GasPrice, &c.Sealer.GasPriceRaw},
+		{"miner.gasprice", &c.Sealer.GasPrice, &c.Sealer.GasPriceRaw},
 	}
 
 	for _, x := range tds {
@@ -582,13 +583,7 @@ func (c *Config) fillTimeDurations() error {
 func readConfigFile(path string) (*Config, error) {
 	ext := filepath.Ext(path)
 	if ext == ".toml" {
-		// read file and apply the legacy config
-		data, err := ioutil.ReadFile(path)
-		if err != nil {
-			return nil, err
-		}
-
-		return readLegacyConfig(data)
+		return readLegacyConfig(path)
 	}
 
 	config := &Config{
@@ -1076,7 +1071,7 @@ func Hostname() string {
 func MakePasswordListFromFile(path string) ([]string, error) {
 	text, err := ioutil.ReadFile(path)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to read password file: %v", err)
+		return nil, fmt.Errorf("failed to read password file: %v", err)
 	}
 
 	lines := strings.Split(string(text), "\n")
diff --git a/internal/cli/server/config_legacy.go b/internal/cli/server/config_legacy.go
index 0d96b2e023..50508a58b6 100644
--- a/internal/cli/server/config_legacy.go
+++ b/internal/cli/server/config_legacy.go
@@ -1,33 +1,33 @@
 package server
 
 import (
-	"bytes"
+	"fmt"
+	"io/ioutil"
 
-	"github.com/naoina/toml"
+	"github.com/BurntSushi/toml"
 )
 
-type legacyConfig struct {
-	Node struct {
-		P2P struct {
-			StaticNodes  []string
-			TrustedNodes []string
-		}
+func readLegacyConfig(path string) (*Config, error) {
+	data, err := ioutil.ReadFile(path)
+	tomlData := string(data)
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to read toml config file: %v", err)
 	}
-}
 
-func (l *legacyConfig) Config() *Config {
-	c := DefaultConfig()
-	c.P2P.Discovery.StaticNodes = l.Node.P2P.StaticNodes
-	c.P2P.Discovery.TrustedNodes = l.Node.P2P.TrustedNodes
-	return c
-}
+	var conf Config
+
+	if _, err := toml.Decode(tomlData, &conf); err != nil {
+		return nil, fmt.Errorf("failed to decode toml config file: %v", err)
+	}
 
-func readLegacyConfig(data []byte) (*Config, error) {
-	var legacy legacyConfig
+	if err := conf.fillBigInt(); err != nil {
+		return nil, err
+	}
 
-	r := toml.NewDecoder(bytes.NewReader(data))
-	if err := r.Decode(&legacy); err != nil {
+	if err := conf.fillTimeDurations(); err != nil {
 		return nil, err
 	}
-	return legacy.Config(), nil
+
+	return &conf, nil
 }
diff --git a/internal/cli/server/config_legacy_test.go b/internal/cli/server/config_legacy_test.go
index 399481fc9b..6fb662d62b 100644
--- a/internal/cli/server/config_legacy_test.go
+++ b/internal/cli/server/config_legacy_test.go
@@ -1,21 +1,50 @@
 package server
 
 import (
+	"math/big"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestConfigLegacy(t *testing.T) {
-	toml := `[Node.P2P]
-StaticNodes = ["node1"]
-TrustedNodes = ["node2"]`
 
-	config, err := readLegacyConfig([]byte(toml))
-	if err != nil {
-		t.Fatal(err)
+	readFile := func(path string) {
+		config, err := readLegacyConfig(path)
+		assert.NoError(t, err)
+
+		assert.Equal(t, config, &Config{
+			DataDir: "./data",
+			RequiredBlocks: map[string]string{
+				"a": "b",
+			},
+			P2P: &P2PConfig{
+				MaxPeers: 30,
+			},
+			TxPool: &TxPoolConfig{
+				Locals:    []string{},
+				Rejournal: 1 * time.Hour,
+				LifeTime:  1 * time.Second,
+			},
+			Gpo: &GpoConfig{
+				MaxPrice:    big.NewInt(100),
+				IgnorePrice: big.NewInt(2),
+			},
+			Sealer: &SealerConfig{
+				Enabled:  false,
+				GasCeil:  20000000,
+				GasPrice: big.NewInt(30000000000),
+			},
+			Cache: &CacheConfig{
+				Cache:     1024,
+				Rejournal: 1 * time.Hour,
+			},
+		})
 	}
 
-	assert.Equal(t, config.P2P.Discovery.StaticNodes, []string{"node1"})
-	assert.Equal(t, config.P2P.Discovery.TrustedNodes, []string{"node2"})
+	// read file in hcl format
+	t.Run("toml", func(t *testing.T) {
+		readFile("./testdata/test.toml")
+	})
 }
diff --git a/internal/cli/server/config_test.go b/internal/cli/server/config_test.go
index c1c6c4ef4a..bf7787ac2e 100644
--- a/internal/cli/server/config_test.go
+++ b/internal/cli/server/config_test.go
@@ -115,7 +115,7 @@ func TestConfigLoadFile(t *testing.T) {
 				MaxPeers: 30,
 			},
 			TxPool: &TxPoolConfig{
-				LifeTime: time.Duration(1 * time.Second),
+				LifeTime: 1 * time.Second,
 			},
 			Gpo: &GpoConfig{
 				MaxPrice: big.NewInt(100),
@@ -127,12 +127,12 @@ func TestConfigLoadFile(t *testing.T) {
 
 	// read file in hcl format
 	t.Run("hcl", func(t *testing.T) {
-		readFile("./testdata/simple.hcl")
+		readFile("./testdata/test.hcl")
 	})
 
 	// read file in json format
 	t.Run("json", func(t *testing.T) {
-		readFile("./testdata/simple.json")
+		readFile("./testdata/test.json")
 	})
 }
 
diff --git a/internal/cli/server/flags.go b/internal/cli/server/flags.go
index e85428b9ee..bbc7f44036 100644
--- a/internal/cli/server/flags.go
+++ b/internal/cli/server/flags.go
@@ -38,7 +38,7 @@ func (c *Command) Flags() *flagset.Flagset {
 		Usage: "Path of the directory to store keystores",
 		Value: &c.cliConfig.KeyStoreDir,
 	})
-	f.SliceStringFlag(&flagset.SliceStringFlag{
+	f.StringFlag(&flagset.StringFlag{
 		Name:  "config",
 		Usage: "File for the config file",
 		Value: &c.configFile,
diff --git a/internal/cli/server/proto/server.pb.go b/internal/cli/server/proto/server.pb.go
index 5512d83b72..3e928ac170 100644
--- a/internal/cli/server/proto/server.pb.go
+++ b/internal/cli/server/proto/server.pb.go
@@ -7,11 +7,12 @@
 package proto
 
 import (
+	reflect "reflect"
+	sync "sync"
+
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
-	reflect "reflect"
-	sync "sync"
 )
 
 const (
diff --git a/internal/cli/server/proto/server_grpc.pb.go b/internal/cli/server/proto/server_grpc.pb.go
index 63f1fa6187..bd4ecb660d 100644
--- a/internal/cli/server/proto/server_grpc.pb.go
+++ b/internal/cli/server/proto/server_grpc.pb.go
@@ -8,6 +8,7 @@ package proto
 
 import (
 	context "context"
+
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
diff --git a/internal/cli/server/service_test.go b/internal/cli/server/service_test.go
index 7850525686..86cf68e75e 100644
--- a/internal/cli/server/service_test.go
+++ b/internal/cli/server/service_test.go
@@ -4,8 +4,9 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/ethereum/go-ethereum/internal/cli/server/proto"
 	"github.com/stretchr/testify/assert"
+
+	"github.com/ethereum/go-ethereum/internal/cli/server/proto"
 )
 
 func TestGatherBlocks(t *testing.T) {
diff --git a/internal/cli/server/testdata/simple.json b/internal/cli/server/testdata/simple.json
deleted file mode 100644
index 6270ee6d13..0000000000
--- a/internal/cli/server/testdata/simple.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-    "data-dir": "./data",
-    "requiredblocks": {
-        "a": "b"
-    },
-    "p2p": {
-        "max-peers": 30
-    },
-    "txpool": {
-        "lifetime": "1s"
-    },
-    "gpo": {
-        "max-price": "100"
-    }
-}
\ No newline at end of file
diff --git a/internal/cli/server/testdata/simple.hcl b/internal/cli/server/testdata/test.hcl
similarity index 57%
rename from internal/cli/server/testdata/simple.hcl
rename to internal/cli/server/testdata/test.hcl
index 5afc091859..208fdc51c1 100644
--- a/internal/cli/server/testdata/simple.hcl
+++ b/internal/cli/server/testdata/test.hcl
@@ -1,11 +1,11 @@
-data-dir = "./data"
+datadir = "./data"
 
 requiredblocks = {
 	a = "b"
 }
 
 p2p {
-	max-peers = 30
+	maxpeers = 30
 }
 
 txpool {
@@ -13,5 +13,5 @@ txpool {
 }
 
 gpo {
-	max-price = "100"
-}
+	maxprice = "100"
+}
\ No newline at end of file
diff --git a/internal/cli/server/testdata/test.json b/internal/cli/server/testdata/test.json
new file mode 100644
index 0000000000..467835e755
--- /dev/null
+++ b/internal/cli/server/testdata/test.json
@@ -0,0 +1,15 @@
+{
+  "datadir": "./data",
+  "requiredblocks": {
+      "a": "b"
+  },
+  "p2p": {
+      "maxpeers": 30
+  },
+  "txpool": {
+      "lifetime": "1s"
+  },
+  "gpo": {
+      "maxprice": "100"
+  }
+}
\ No newline at end of file
diff --git a/internal/cli/server/testdata/test.toml b/internal/cli/server/testdata/test.toml
new file mode 100644
index 0000000000..81fc4c4630
--- /dev/null
+++ b/internal/cli/server/testdata/test.toml
@@ -0,0 +1,25 @@
+datadir = "./data"
+
+[requiredblocks]
+a = "b"
+
+[p2p]
+maxpeers = 30
+
+[txpool]
+locals = []
+rejournal = "1h0m0s"
+lifetime = "1s"
+
+[miner]
+mine = false
+gaslimit = 20000000
+gasprice = "30000000000"
+
+[gpo]
+maxprice = "100"
+ignoreprice = "2"
+
+[cache]
+cache = 1024
+rejournal = "1h0m0s"