Dear Community,
I found myself in need of help, because I cannot log in my Blynk Local Server administration page. I can access the webpage, but any combinations of credentials won’t complete the login.
My setup is Raspberry Pi 4 connected to LAN via ethernet, static IP.
I am using duckdns to access the local server through WAN.
I can enter the admin page using “mylink.duckdns.org:9443/admin”, which is the same address inside my Blynk app to access the server, but cannot using “10.0.0.237:9443/admin”, where [10.0.0.237] is the local address given by my router.
I have setup server.properties in the same folder where the blynk server .jar is located. I have even tried erasing data folder, without success. From what I recall, I’ve never entered the admin UI before, therefore never had the chance to change the password. First time entering, the credentials should be username [admin@blynk.cc] and password [admin], but they won’t work. It just reloads the blank login page.
The server.properties is as follow:
#hardware mqtt port
hardware.mqtt.port=8440
#http, plain web sockets and plain hardware port
http.port=8080
#if this property is true csv download url will use port 80 and will ignore http.port
force.port.80.for.csv=false
#if this property is true redirect_command will use 80 port and will ignore http.port
force.port.80.for.redirect=true
#secured https, web sockets and app port
https.port=9443
#address to bind to. by default bounded to all interfaces
listen.address=
#by default server uses embedded in jar cert to simplify local server installation.
#WARNNING DO NOT USE THIS CERTIFICATES ON PRODUCTION OR IN WHERE ENVIRNOMENTS REAL SECURITY REQUIRED.
#provide either full path to files either use '.' for specifying current directory. For instance "./myfile.crt"
server.ssl.cert=
server.ssl.key=
server.ssl.key.pass=
#by default System.getProperty("java.io.tmpdir")/blynk used
data.folder=
#folder for logs.
logs.folder=./logs
#log debug level. trace|debug|info|error. Defines how precise logging will be.
log.level=info
#maximum number of devices allowed per account
user.devices.limit=50
#maximum number of tags allowed per account
user.tags.limit=100
#defines maximum allowed number of user dashboards. Needed to limit possible number of tokens.
user.dashboard.max.limit=100
#defines maximum allowed widget size in KBs as json string.
user.widget.max.size.limit=20
#user is limited with 100 messages per second.
user.message.quota.limit=100
#maximum allowed number of notification queue. Queue responsible for processing email, pushes, twits sending.
#Because of performance issue - those queue is processed in separate thread, this is required due
#to blocking nature of all above operations. Usually limit shouldn't be reached.
notifications.queue.limit=2000
#Number of threads for performing blocking operations - push, twits, emails, db queries.
#Recommended to hold this value low unless you have to perform a lot of blocking operations.
blocking.processor.thread.pool.limit=6
#this setting defines how often we can send mail/tweet/push or any other notification. Specified in seconds
notifications.frequency.user.quota.limit=5
#this setting defines how often we can send webhooks. Specified in miliseconds
webhooks.frequency.user.quota.limit=1000
#this setting defines how big could be response for webhook GET request. Specified in kbs
webhooks.response.size.limit=96
#maximum size of user profile in kb's
user.profile.max.size=256
#number of strings to store in terminal widget
terminal.strings.pool.size=25
#number of strings to store in map widget
map.strings.pool.size=25
#number of strings to store in lcd widget
lcd.strings.pool.size=6
#maximum number of rows allowed
table.rows.pool.size=100
#period in millis for saving all user DB to disk.
profile.save.worker.period=60000
#period in millis for saving stats to disk.
stats.print.worker.period=60000
#max size of web request in bytes, 256 kb (256x1024) is default
web.request.max.size=524288
#maximum number of points that are fetched during CSV export
#43200 == 60 * 24 * 30 - minutes points for 1 month
csv.export.data.points.max=43200
#specifies maximum period of time when hardware socket could be idle. After which
#socket will be closed due to non activity. In seconds. Default value 10 if not provided.
#leave it empty for infinity timeout
hard.socket.idle.timeout=10
#enable DB
enable.db=false
#enable raw data storage to DB
enable.raw.db.data.store=false
#size of async logger ring buffer. should be increased for loads >2-3k req/sec
async.logger.ring.buffer.size=2048
#when true - allows reading worker to trigger hardware even app is offline
allow.reading.widget.without.active.app=false
#when enabled server will also store hardware and app IP
allow.store.ip=true
#initial amount of energy
initial.energy=100000
#ADMINISTRATION SECTION
admin.rootPath=/admin
#used for reset password page and certificate generation.
#by default current server IP is taken. could be replaced with more friendly hostname.
#it is recommended to override this property with your server IP to avoid possible problems of host resolving
server.host=10.0.0.237
#used for fallback page for reset user password, in most cases it should be the same as server.host
#IP is not allowed here, it should be blynk-cloud.com for Blynk app
#or *.blynk.cc for private servers with own apps
restore.host=*.blynk.cc
product.name=Blynk
#email used for certificate registration, could be omitted in case you already specified it in mail.properties
#contact.email=
#network interface to determine server's current IP.
#only the first characters of the interface's name are needed.
#the default setting eth will use the first ethX interface found (i.e. eth0)
net.interface=eth0
#comma separated list of administrator IPs. allow access to admin UI only for those IPs.
#you may set it for 0.0.0.0/0 to allow access for all.
#you may use CIDR notation. For instance, 192.168.0.53/24
allowed.administrator.ips=0.0.0.0/0
# default admin name and password. that will be created on initial server start
admin.email=admin@blynk.cc
admin.pass=
The server is launched through auto launch on reboot with [crontab -e], the line used is:
@reboot java -jar /home/pi/Blynk/server-0.41.16-java8.jar -serverConfig /home/pi/Blynk/server.properties -dataFolder /home/pi/Blynk &
Any help would be appreciated, thanks a lot for your time.
XZ
P.S. Sorry to have disturbed privately Pete. 