When debugging in VS by IIS Express (Google Chrome), virtual directories are created. Sometimes I have an error like below:
Failed to register URL "http://localhost:60000/" for site "Floow.Admin.UI.Web(1)" application "/". Error description: The process cannot access the file because it is being used by another process. (0x80070020)
The step I take is changing the portnumber, so I can proceed.
But meanwhile I have a lot of these virtual directories. Can I delete the Virtual Directories somehow? I can't find them in IIS.
[EDIT]
This image is sometimes shown too and belongs to the issue.
[/EDIT]
Error code 0x80070020 means ERROR_SHARING_VIOLATION, which in the case of IIS Express means that the port that it is attempting to listen on is being used by another process.
Use the netstat command to find out which application is using the port and then solve the problem.
netstat -ao | findstr <port_number_to_search_for>
The a parameter tells netstat to display all connections and listening ports.
The o parameter tells netstat to display the process ID associated with the connection.
Related
I created the 3 necessary containers for NuoDB using the NuoDB instructions.
My Docker environment runs on a virtual Ubuntu Linux environment (VMware).
Afterwards I tried to access the database using a console application (C# .Net Framework 4.8) and the Ado.Net technology. For this I used the Nuget "NuoDb.Data.Client" from Nuget.org.
Unfortunately the connection does not work.
If I choose port 8888, my thread disappears to infinity when I open the connection.
For this reason I tried to open the port 48004 to get to the admin container.
On this way I get an error message.
"System.IO.IOException: A connection attempt failed because the remote peer did not respond properly after a certain period of time, or the established connection was faulty because the connected host did not respond 172.18.0.4:48006, 172.18.0.4"
Interestingly, if I specify a wrong database name, it throws an error:
No suitable transaction engine found for database.
This tells me that it connects to the admin container.
Does anyone have any idea what I am doing wrong?
The connection works when I establish a connection with the tool "dbvisualizer".
This tool accesses the transaction engine directly. For this reason I have opened the port 48006 in the corresponding container.
But even with these settings it does not work with my console application.
Thanks in advance.
Port 8888 is the REST port that you would use from the administration tool such as nuocmd: it allows you to start/stop engines and perform other administrative commands. You would not use this port for SQL clients (as you discovered). The correct port to use for SQL clients is 48004.
Port 48004 allows a SQL client to connect to a "load balancer" facility that will redirect it to one of the running TEs. It's not the case that the SQL traffic is routed through this load balancer: instead, the load balancer replies to the client with the address/port of one of the TEs then the client will disconnect from the load balancer and re-connect directly to the TE at that address/port. For this reason, all the ports that TEs are listening on must also be open to the client, not just 48004.
You did suggest you opened these ports but it's not clear from your post whether you followed all the instructions on the doc page you listed. In particular, were you able to connect to the database using the nuosql command line tool as described here? I strongly recommend that you ensure that simple access like this works correctly, before you attempt to try more sophisticated client access such as using Ado.Net.
I have installed Jenkins in Windows server 2012 64-bit machine and want to make it available in internal network.
I have added --httpListenAddress to 0.0.0.0 and restarted Jenkins and tried to access it with http://hostname:8080 but no page shows up(though It showing Jenkins icon in URL bar). However http://localhost:8080 works fine.
Further I checked the firewall inbound rule for the Jenkins but seems it has no issues.
I tried to catch the listening ports with "netstat -aon | find /i "8080" and found <host ip address>:8080 FIN_WAIT_2 which sign towards that the request is stuck(May be I am wrong).
I am clueless what exactly is blocking to use hostname with jenkins. Please share your solution if you already fixed this issue.
You might try adding a Windows Firewall rule. Go to Windows Firewall, Advanced Configuration, Inbound Rules rule and create an Allow rule for the specific version of java.exe you have installed.
This worked for us with the drawback that every time you upgrade Java, you must also modify the firewall rule. This is because Java creates a new subfolder for every version. We've tried using %JAVA_HOME% in firewall rules but it doesn't seem to work. We were on Windows Server 2012R2 at the time.
Similar answer here: https://stackoverflow.com/a/17479566/7752
On the server open a new command prompt and type
ipconfig
You should get a list of ips. Open a browser and type each up followed by 8080 for e.g.
http://202.123.2.1:8080
If Jenkins opens up, from another computer ping the ip and see if you can get a ping reply
ping 202.123.2.1
If you get a ping reply, you can access jenkins from any pc on the network by typing in the ip and port number.
Now to get to the hostname,you need to edit your host file
c:\Windows\System32\Drivers\etc\hosts
Type in the ip followed by the hostname
202.123.2.1 jenkins
If you can't get through, you need to open port 8080. See https://www.vultr.com/docs/how-to-open-a-port-in-windows-firewall-on-windows-server-2012
You cannot access from outside the machine because Jenkins Service does not have credentials to use that machine, only from localhost is accessible.
This is how to enter the credentials in Jenkins service.
In the Windows search bar, type services then enter.
Then scroll down to Jenkins and double-click on it.
In Jenkins Properties, select the tab "Log On".
Select Check box "This account"
Update your username and password.
Voila! Now Jenkins web can connect to the Jenkins machine via Jenkins service.
I'm trying to debug my application but any URLs which contain localhost (I've tried IIS Express, Local IIS, a simple Node server, and a Python development server) are redirected to the IIS welcome screen.
Examples:
localhost:xxxx/MyController
localhost:xxxx/SomeFolder/SomeFile.html
localhost/MyApp/MyController
localhost/MyApp/SomeFolder/SomeFile.html
The URL changes from the full url to my external IP address (i.e., URL changes from localhost:xxxx/MyController to simply XX.XX.XX.XX)
I just tried launching with a brand new ASP.NET "Empty Web Site," just loading the index.html file, and same situation.
There are no entries in my hosts file and it appears that this is only happening in Chrome. Any ideas?
This works in php, so it may help you with ASP:
Run Notepad as administrator
Open C:\Windows\System32\drivers\etc\hosts file
add the following line to hosts file
127.0.0.1:123 yourserver.com
Save
Run command prompt using CMD in run or type it in start menu
Type this command and hit enter
ipconfig /flushdns
Close
go to yourserver.com
I hope this help you. Again, this works fine with PHP.
It sounds like your DNS is resolving the localhost hostname. If you're using your ISP's DNS, this may happen. You could change the DNS to Google's Public DNS. By pointing the DNS server to IP's 8.8.8.8 and 8.8.4.4. See the link for details on how to configure your computer.
I have a server and I know that there is an Informix installed on it, but I don't know who installed it. There is closed source client connecting to this server but I cannot get anything about it apart from username and password. I have no idea how to connect it, I don't know what would be the port number and server name of it. I have downloaded SQuirreL with JDBC Informix drivers.
How can I connect to JDBC Informix server without knowing the port and server name?
In short, you will need the port number, server name (and database name as well) to connect to Informix.
Assuming that you have permissions to hunt around on the box where Informix is installed, there are a few places where the details about your Informix server are likely to be found. Since I don't see any details as to the platform on which IDS (Informix) is installed in your case, I'll try to provide info for both Unix and Windows platforms. But first, a bit of background:
There are not too many parameters needed to set up a connection to Informix. Typically, all you would need are:
username
password
Server IP Address
Port
Server Name (the name of the Informix instance)
Database Name (the name of the db on [Server Name] to which you want to connect)
It sounds like you need to find out the last three.
Linux:
On a Linux platform (as well as Windows, I believe), there are environment variables that point the way to where on your system Informix is installed. The most important of these is %INFORMIXDIR%, which points to the root directory of your Informix installation. A lot of the time however, Informix is installed in /opt, so try there.
In %INFORMIXDIR%/etc on typical installs is a file called sqlhosts (it may have a suffix for your specific server instance, but it'll start with sqlhosts). In this file is the server name, and possibly the port number. %INFORMIXDIR%/etc/sqlhosts contains plaintext data in the following format:
ServerName NetType HostName Port/ServicesName
The first value is the server name you seek. The fourth value (Port/ServicesName) is either the port number, or the name of the entry in /etc/services which references the port number. If you don't see a port number, look in /etc/services.
For example, sqlhosts will probably contain something like this:
myservername onsoctcp informix.mydomain.com 12345
In this case, your server name is "myservername" and the port is 12345
Alternatively, it could look like this:
myservername onsoctcp informix.mydomain.com informixservice
in which case you would have to go look in /etc/services for a line that says
informixservice 12345/tcp
which will tell you the port.
Windows
Caveat: I've never dealt with Informix servers installed on Windows, however based on the IBM documentation, it doesn't seem much different in regards to the task at hand.
Instead of the file %INFORMIXDIR/etc/sqlhosts, the information you seek is contained in the registry key
HKEY_LOCAL_MACHINE\SOFTWARE\INFORMIX\SQLHOSTS
Use regedit.exe to read the values stored in this entry.
If you don't find a port number in that reg key, the Windows equivalent of Unix's /etc/services file is
C:\Windows\System32\drivers\etc\services
Examine this file with a text editor (notepad works fine).
Hopefully this helps. Good luck.
*Short answer: You can not .*
This kind of situation involves security issues , so , the database doesn't "publish" it self at your network for everyone knows it's there.
If you need discovery without contact the administrator of your (your?) environment, will need to use hackers techniques (nmap utility already help here) to discover some informations (IP, Port) and you still missing informations like servername, protocol ,username and password.
Just caution, because attempt of connection at Informix database listener will be logged.
Now, if you have access at the server where the database is you can look for sqlhosts file and get all this.
Another alternative, more reasonable is just ask to your DBA/Admin the configurations justifying why you want the access.
You CAN find servers on a host:
onstat -g dis
will listed servers even if they are offline (or potentially decommissioned).
Server information is in /INFORMIXTMP on UNIX/Linux and I would expect a simlar folder under C:\ in Windows.
You should add more information about working environment: what platform your client is, what platform your server is, do you have access to server machine etc.
If you know that something from your computer connects to other machine then you can use netstat to discover it. If you work on Linux then there is -p option that shows pid and application name to each connection.
At first we have to discover pid of closed source client:
[root#test1 ~]# ps aux | grep my_app
root 12457 0.0 3.2 3342440 333336 ? Sl Mar06 21:01 java -cp /usr/local/bin/my_app...
Now when I know pid I can use netstat:
[root#test1 ~]# netstat -tnp | grep 12457
tcp 0 0 ::ffff:169.0.1.71:55850 ::ffff:169.0.1.74:9088 ESTABLISHED 12457/java
From this output I can see that Infomix probably works on port 9088 of 169.0.1.74 machine.
On Windows you can use TCPView from SysInternals to see similar things.
On Windows you can also check ODBC Data Source Administrator (both 32 and 64 bit) to see if there is Informix driver in use.
I m trying setup a cassandra cluster as a test bed but gave the JMX remote connection error. I seem to found the answer for my error from cassandra FAQ page
Nodetool says "Connection refused to host: 127.0.1.1" for any remote host. What gives?
Nodetool relies on JMX, which in turn relies on RMI, which in turn sets up it's own listeners and connectors as needed on each end of the exchange. Normally all of this happens behind the scenes transparently, but incorrect name resolution for either the host connecting, or the one being connected to, can result in crossed wires and confusing exceptions.
If you are not using DNS, then make sure that your /etc/hosts files are accurate on both ends. If that fails try passing the -Djava.rmi.server.hostname=$IP option to the JVM at startup (where $IP is the address of the interface you can reach from the remote machine).
But can somebody help me on how to do -Djava.rmi.server.hostname=$IP
Or what to add is hosts file, i know that in hosts normally we add "IP Alias", but whose ip and alias.
I dont know much java or either linux
I m currently working on ubuntu v10.04 and cassandra v0.74
Sudesh
For JMX you need to enable JMX-remoting:
java -Dcom.sun.management.jmxremote
Depending on from where you want to access the jmx-server, you also need to specify a port:
-Dcom.sun.management.jmxremote.port=12345
and set or disable passwords.
Have a look at http://download.oracle.com/javase/1.5.0/docs/guide/management/agent.html for more details.