I have an ansible-tower template that I want to run at a specific time in the future. To do this I believe I should run tower-cli schedule create then pass some parameters to the program, however I don't know how to pass the date/time parameter.
I have looked at this document however it doesn't seem to include such a parameter. How does one do this?
It looks like, based on some example issues that they are using the RRULE property from the iCalendar but why they would omit such a crucial detail from every single document in the Internet I can only chalk up to "please buy Tower and pay us all the $$$$$$$$"
Even the help text for schedule.py is abysmally useless.
I hope knowing that it is RFC-5545 compatible helps unstick you from your problem, and I hope you file an issue against tower-cli letting them know that you were not provided very basic information to be successful with their tool.
Related
I am trying to shift from environment files in Chef to using Policyfiles. https://docs.chef.io/policy.html. I really like the concept, especially since you can include a policy from policy into another, but I am trying to understand how do a simple attribute change.
For instance, if I want to change a globally-used attribute that may be an error message for a problem that is happening now. ("The system will be down for 10 minutes. Thanks for your patience"). Or perhaps I want to turn off some AB testing with an attribute working as a flag. From what I can tell, the only way I can do this is to change an attribute in the policyfile, and then I need to create a new version of the policy file.
And if the policyfile is an included in many other policyfiles, like in the case of a base policyfile, then I have a lot of work to do for a simple change.
default['production']['maintenance_message'] = 'We will be down for the next 15 minutes!'
default['production']['start_new_feature'] = true
How do I make a simple change to an attribute that affects an entire policy group? Is there a simple way to change an attribute, or do I have to move all my environment properties to a data bag??
OK, I used Chef Support and got an answer: Nope.
This is their response:
"You've called out one of the main reasons we recommend that people use something like Jenkins pipelines to deliver cookbooks to their infrastructure. All that work can be kicked off by a build system recognizing a change in a dependency and initiating new builds for all the downstream consumer jobs.
For what it's worth, I don't really like putting application configurations like that maintenance message example you used in configuration management, I think something like Habitat is a better system for that kind of rapid-change configuration delivery, although you could also go down the route of storing application configuration like that in a system like Hashicorp Vault, Consul, or etcd, and ensuring that whatever apps need to ingest those changes are able to do so without configuration management fighting with the key-value config store.
If that was just an example to illustrate things, ignore the previous comment and refer only to my recommendation to use pipelines to deliver cookbooks, attributes, etc to your infrastructure (and I would generally recommend against data bags these days, but that's mostly a preference thing)."
I deployed integration edition of document server on windows machine. I want to make many changes on document server as per my suitability. So I wanted to know the meaning of each and every parameter in default.json to achieve my goal. Is there any proper documentation for default.json so that I could thoroughly know the meaning of each parameter and accordingly use those parameter.
No, there is no such doc. You can try to figure it out by looking at changes for https://github.com/ONLYOFFICE/server/blame/master/Common/config/default.json
Unfortunately today we do not have complete documentation for default.json. We already have plans for full refactoring of Document Server configuration
and writing detailed documentation for default.json. We understand the importance of it but any time frames for it could not be specified.
Thank you for the interest in our product.
I'm not sure how to categorize this question, so let me just explain what I would like and hopefully it will make sense.
I'm after a product (with an API) which I can send different numbers to with tags, and it will take care of all the monitoring/logging stuff.
So for example, say I have a program that downloads a file from a website every 10 seconds. I would like to monitor how long each of these downloads is taking. It is quite easy in my application to time how long it takes. I would now like to send this number and tag (e.g., tag='download time', value = '1.234') to a 3rd party product. The 3rd party product will now store this value/tag for me. The product will have a website I can go to, and configure a bunch of things. So in this example, I could setup an alert like "if 'download time' > 5 send me an email". I could also visit a website, and view a graph of the logged values and maybe some random statistics (e.g., how often the value has been in the warning/error zone).
I think that's about it. Sure it wouldn't be too hard to do this myself, but I'm no web designer and it'd end up looking pretty ugly. The more user friendly this kind of product is the more willing users will be to look at the data and actually monitor stuff.
Does such a service exist?
EDIT: Products similar to this: http://dashboard.kpilibrary.com/. This is pretty much exactly what I was after, but am still searching around.
There are many monitoring tools out there. Nagios or RHQ (http://rhq-project.org/) come to mind. Most of the tools work a little different: rather than throwing stuff at them, they have plugins that actively go out and do something to do the measuring. In your example, the plugin would download the file and then report the measurement data to the central server, which can then show you graphs or run alerts on it.
On Windows, you can use this:
http://technet.microsoft.com/en-us/library/cc771692%28WS.10%29.aspx
(Windows Performance Monitor)
It pretty much does what you are looking for:
Passively collects performance data (E.g. CPU Usage)
Can be fed App specific performance metrics (E.g. download time)
Can alert you on various thresholds
Has a reporting interface for analyzing metrics
EDIT : http://technet.microsoft.com/en-us/library/cc749249.aspx , more documentation on this.
This answer is specific to Windows.
If you are looking to analyze events from various systems and you also what the opportunity to create your own events you should consider ETW.
The ETW system allows you to consume data events from any number of sub-systems. You can look at an exhaustive list of built in providers by running the following command:
logman query providers
The beauty of ETW is that you also have the opportunity to create your own providers and push your own data into the resulting report. This is a high-performance logging mechanism and is used by Windows itself for many performance investigations.
The resulting report will be an ETL file. This is a standard file that can be viewed using xPerf, ships with Windows SDK, or the build-in ETL analyzer, tracerpt.exe.
I want to be able to interrupt a running workflow instance, say when a new activity is about to be invoked, and extract information both about the structure of the workflow and the data in the particular instance. Then I will consult with an external system and according to its response I will possibly alter the behaviour of the workflow. The options I would like to have are addition/removal of activities and altering parameters for the activities to be invoked.
I am currently struggling with the engine it's best to go with. I have looked at WWF, Apache ODE, Oracle Workflow and Active BPEL and as far as I understand they can all provide me with the options I need. I would really appreciate any recommendations on which one will be the easiest to work with for my purpose and any restrictions either of the above might have that would prevent me from reaching my goal.
Thanks
I am sorry not to directly answer your question, but you may be interested in a state machine framework called Stateless created by Nicholas Blumhardt (AutoFac). I have used this instead of Windows Workflow where I needed to quickly configure my steps for a work flow. I have one configuration file that I alter and can introduce new steps into the workflow quite easily. See my SO answer here for more details.
Essentially you define a state as State<T> and this allows you to persist your state in a database easily.
I am sure answer for this question will be very subjective, I simply want to know what the options are out there (for building a proxy to load external contents).
Typically I used cURL in php and pass a variable like proxy.url to fetch content. Then make an AJAX call with Javascript to populate the contents.
EDIT:
YQL (Yahoo Query language) seems a very promising solution to me, however, it has a daily usage limit which essentially prevents me from using it for large scale projects.
What other options do I have? I am open to any language, any platform, key criteria are: performance and scalability.
Please share your ideas, thoughts and experience on this topic.
Thanks,
you dont need a proxy server or something else.
Just create a cronjob to fetch the contents every 5 minutes (or whenever you want).
You just need to create a script that grabs the content from the web and saves it (to a file, a database, ...), which will be started by the cronjob.
If somebody requests your page, you just need to send the cached content out and do with it whatever you want to do.
I think scalability and performance will be no problem.
Depending on what you need to do with the content, you might consider Erlang. It's lightening fast, ridiculously reliable, and great for scaling.