Working on the commercial paper example as outlined here:
https://github.com/IBM-Blockchain/cp-web
Works fine until I try to log into my project here:
http://cp-web-jklondon-1411.mybluemix.net/login
Get error saying:
Waiting on the node server to open up so we can talk to the blockchain. This app is likely still starting up. Check the server logs if this message does not go away in 1 minute.
This application cannot run without the blockchain network :(
Whats going on?
Thanks
Rav
Bluemix might have been unstable / the app is still staging. This actually happened quite frequently.
Related
In the JetBrains` page for Code With Me, I can see a paragraph mentioning:
You can use Code With Me for real time collaboration, editing code, sharing a server, and running a debugging session.
However, I cannot see how a server can be shared. For example, if I start API server locally, I cannot find a way to share it through Code With Me.
I am just and only looking for a way of sharing that local server through Code With Me, not any third-party website or so.
I would appreciate any help
If I understand you correctly, you want to share access to your server running locally with a guest.
For this scenario, there is a Code With Me tool-window in the right bottom corner which allows you to forward a port. The tool-window appears when the Code With Me session is active.
Does it fit your needs?
I have a problem with a web service that is installed and started with a .msi that is created with the WiX toolset.
The service can be installed and started on all the machines I tested so far (shown as running in the Services Manager) but on some machines it is not reachable (for example via a browser) and not shown in the list of listening ports on that machine (displayed with 'netstat -a').
I am trying to figure out what's going wrong but I am not really familiar with web service development and configuration. It's a third party service, thus I don't know how it works internally.
A good starting point for me would be to find out, what exactly happens when a service is installed and started during the execution of the .msi-file.
Maybe I could try to tackle the problem on a lower level then.
Below is my code in the ServiceInstall-Element:
<ServiceInstall
Id="ServiceID"
Type="ownProcess"
Vital="yes"
Name="ServiceName"
DisplayName="ServiceDisplayName"
Description="Lorem Ipsum"
Start="auto"
Account="LocalSystem"
ErrorControl="normal"
Interactive="no"
Arguments="action=run">
</ServiceInstall>
The argument is important - without it, the service won't start or run.
Maybe someone else encounterd the same or a similar problem and can help me out.
Thanks already in advance - each hint is appreciated.
EDIT I (15.04.18):
As it might be a problem with the specific service, I will add some further information here:
It's a third party software called CryptoLicensing:
http://www.ssware.com/cryptolicensing/cryptolicensing_net.htm
Part of this software is that specific program, that serves as a License Server and does the license registration, for example in a customer's network.
The service can be run as a Windows application or installed and run as a Windows service. In both cases it should be listening on a (pre-)specified port on the installed machine.
Whenever I start the .exe as an application, everything works as intended. The service is reachable (for example with the browser) and can be accessed from other machines in the network.
When the .exe is installed and started as a service, it does not work as intended on every machine. For example if I install and start the service on my laptop, it is shown as running in the Services Manager, but is not reachable on its assigned URL (not even on the localhost) nor is the specific port displayed in the active listening ports, for example with 'netstat -a'.
The service itself starts without any error messages and does not log any errors or exceptions as it seems to be running without any problems.
I contacted the vendor, but sometimes he doesn't reply quickly and he is not very specific in his replies.
Before asking the question I assumed that it was a problem with the Windows user rights and the WiX installer but during the discussion here I had the feeling that it might a problem with the service itself.
I hope this 'new' piece of information helps in isolating and location the problem.
Thanks to everyone who helped so far!
Hopefully not stating the obvious here, but WiX doesn't do much except populate the ServiceInstall table in the MSI file, so this is about why Windows Installer won't start the service. ServiceInstall table:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa371637(v=vs.85).aspx
Also, this isn't really about ServiceInstall - it's probably about the ServiceControl element in your WiX source, but it's not clear whether that's how you're starting it or if you're starting it manually later on. That does make a difference. What is the error message and where are you getting it, and is it a 1920 or 1921 error (in the context of ServiceControl).
The main reason a service will start on one system but not another is missing dependencies. If your service is C++ based (the post doesn't say) then there are probably dependencies on C runtimes, UCRT runtimes, MFC or ATL runtimes and so on.
First: are you sure this service is intended to run as LocalSystem? (MSDN, SO).
Second: did you check the event logs in detail for anything obvious? If the service is good you should find a hint at least. Something to start with. I find that I sometimes miss the actual logs in the event viewer because it is so "crowded". My take on it: empty the log and stop and restart the service.
Something locking / blocking: If the service installs and runs OK I would suspect other factors such as firewalls (hardware & software), security software in general (anti-virus, malware scanners), network configuration issues (proxies, WINS, DNS and all the complexities involved in networking). Is the service trying to reach an UNC path?
Diverse Machines: What are the target machines? Are they virtual, are they physical, are they test machines, are they operative SOE machines in corporate networks? Are they the same OS version and edition?
Further Ideas: It is not quite related, but maybe skim this list of suggestions for debugging from another answer (I am not sure why it was down-voted, I think it is an OK list to inspire debugging ideas): Windows Application Startup Error Exception code: 0xe0434352 (maybe just skim the bolded words for ideas - Recommended).
sc.exe: And finally, perhaps check the sc.exe tool (Service Control) and see if it can provide you with some useful information for debugging.
sc.exe in the context of killing hung services (sample use).
sc.exe from MSDN
Some further links:
Windows Services Frequently Asked Questions (FAQ). Content seems to be up to date - at face value at least. These guys claim to be experts on services. I have no idea who they are.
Essential Tools for Windows Services: SC.EXE
Run Service Control (sc.exe) command on secure port
After almost 20 months we finally (and accidentally) found a solution to the problem! For the few machines, on which the service did not run properly, setting the NoInteractiveServices value in the registry to 0 did the trick. A value of 1 (which is default) means that no service is allowed to run interactively, regardless of whether it has the SERVICE_INTERACTIVE_PROCESS property. More information on Interactive Services.
I am not completely satisfied with the solution, because on all the other machines NoInteractiveServices is set to 1 AND the service runs properly anyway. However, on the machines where the service did not run interactively this solution worked for us. Thus I will accept this as an answer.
If anyone has more information on this issue and can explain why this works, feel free to
add them - I would be very interested!
I have installed hyperledger composer locally. But on localhost it gives error :
Error : Error trying to ping.
Error: No business network has been
specified for this connection.
I am not able to add model and script file as well.
This is the errors showing in terminal
error: [Hyperledger-Composer] undefined:HLFConnection :ping() Error: Error trying to ping. Error: No business network has been specified for this connection
at _checkRuntimeVersions.then.catch (/usr/local/lib/node_modules/composer-playground/node_modules/composer-connector-hlfv1/lib/hlfconnection.js:787:34)
at <anonymous>
at runMicrotasksCallback (internal/process/next_tick.js:121:5)
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickCallback (internal/process/next_tick.js:180:9) error: [Hyperledger-Composer] undefined:ConnectorServer :Error: Error trying to pi
I think I solved this problem.
About the error
The error reason is No business network has been specified for this connection., this does not happen when you first time to run composer-playground, because that time, you truly do not have a network and you either do not have card too, so there is a modal pop up Let's blockchain.
This only happened when you stop/delete your business network net, or there is no business network running but you also have the business card linked to the network.
Solution
Follow the tutorial to create a new business network locally
restart your farbric tool by stopFabric.sh and startFabric.sh, (* this is not to start your business network but your fabric)
run your playground again composer-playground
probably you will also see the error again (error trying to ping), but no worry
find a button at top right corner which is folded My Business Networks
delete the card without connection or deploy a new network
This worked for me, hope it will work for you too. This kind of process design limitation, the card is still there even you delete your network or your are trying to start your playground even you did not start your network. This is why this error happened I think.
Addition, More about playground
Hyperledger Composer Playground (Playground from now on) uses your
browser's local storage to simulate the blockchain network's state
storage, which means you don't need to run a real validating peer
network to use Playground.
Using browser-only mode, you can model and test the business network
using a mock blockchain ledger that resides in your browser's local
storage.
How to delete cache in browser Chrome
This probably can solve many errors.
In Chrome, for example, under Settings > Advanced > Content Settings >
Cookies > All cookies and site data > localhost, click the trashcan
icon to remove local storage. If you're using a different browser,
follow the instructions specific to that browser, and delete all local
storage.
References
A very good IBM blockchain/ composer tutorial, just old, need to be pay attention to that some commands not working in the same way on new version of composer
I got the same issue here. I'm not sure what's wrong(maybe because I fail to create a business network last time). But since the playground store the data with browser local storage. I simply clear the local storage and fix it.
I had the same issue and it got fixed.
Clear the cache of your browser and refresh the page!
Noticed composer wasnt running in the terminal.
Runcomposer-playgroundin the terminal and retry.
OK, so before I start, full disclosure: I'm pretty new to Nagios (only been using it for 3 weeks), so forgive me for lack of brevity in this explanation.
In my environment which I inherited, I have two redundant Nagios instances running (primary and secondary). On the primary, I added an active check for seeing if Apache is running on a select group of remote hosts (modifying commands.cfg and services.cfg). Unfortunately, it didn't go well so I had to revert the changes back to the previous configuration.
Where my issue comes in is this: after reverting the changes (deleted the added lines, started Nagios back up), the primary instance of Nagios' web UI is showing that a particular service is going critical intermittently with a change in duration, e.g., when the service is showing as OK, it'll be 4 hours but when it's critical, it'll show as 10 days (see here for an example host; the screenshots were taken less than a minute apart). This is only happening when I'm refreshing any of the Current Status pages or going to an individual host to view monitored services and refreshing there as well. Also, to note, this is a passive check for the service with checking freshness enabled.
I've already did a manual check from the primary Nagios server via the CLI and the status comes back as OK every time. I figured that there was a stale state somewhere in retention.dat, status.dat, objects.cache, or objects.precache, but even after stopping Nagios, removing said files, and starting it back up, and restarting NSCA, the same behavior persists. The secondary Nagios server isn't showing this behavior and is showing the correct statuses for all hosts and services and no modifications were made to it either.
Any help would be greatly appreciated and in advance, thanks! I've already posted up on the Nagios Support forums, but to no avail.
EDIT: Never mind. Turns out there were two instances of Nagios running, hence the intermittent nature. Killed off both and started Nagios again and it stabilized.
I know this is similar to a lot of questions on here, but I feel it's worth a new question since I have yet to discover a question that fully encompasses my problem. I've been struggling with this for a couple weeks, read pretty much every answer to every question about it on here, as well as countless blogs, articles and other Q&A forums. So, here goes:
I created a service to monitor several things on our network and update a database with the information. Moved it to a server and went threw a lot of frustration with getting the WMI and DCOM settings right so that it would work.
I recently had my computer crash on me and so I lost my code and had to recreate the service from scratch/memory. It runs perfectly fine on my laptop. I moved it to a server(different than the one that is running the old version of the service). It runs there, but it is unable to reach the PCs I am monitoring. I try running the command line WMI query and can't connect there either. Getting the 'RPC Server is unavailable' error.
I've tried changing settings as per all of the articles/answers I've been able to find and cannot get it to connect.
A few relevant things:
All the RPC/WMI related services are running on both server and
monitored PCs.
The firewall is disabled on both server and monitored PCs.
I know the user and password are correct and have admin rights
on monitored PCs.
Server in question is (I believe, will confirm with someone later)
Windows Server 2008 R2 on a virtual server, if that makes a
difference.
Able to ping PCs and run tracert from server.
Here's where it doesn't make sense to me. I am able to run the wmic command from my laptop to the monitored PC. And from my laptop to the server. Wmic works locally on the server, but whenever I try to make a remote call, it fails with the RPC error.
I don't know much about networking, and we are a small company so we don't really have a Network Admin or anything. So, any and all advice would be appreciated.