I am currently gathering some information for a blog on Octopus roles, envs and targets and have a question. While I was thinking of all the possible roles, I thought of a load balancer.
I have never seen a tentacle installed on the machine hosting an s/w load balancer. Is there anyone in this group who has seen such a scenario.
Pardon me if my question is silly but my knowledge of Load balancers is not great.
Thanks in advance.
Regards Tarun
There's nothing special about a machine that runs a load balancer that would preclude putting a Tentacle on that machine. The only question is, what are you going to deploy to that machine hosting the load balancer?
New load balancer software might make sense. Or frameworks or other support software (.NET, node-js, whatever). But ordinarily you would not put web applications on this machine; the load balancing machine would not itself have the web applications that it load balances. (Of course you could run web apps on the same machine; the load balancer just needs to be told the URL to get to the app on its own machine. But it's not a usual configuration.)
And most other management tasks are easily accomplished with other tools like ansible, chocolatey, etc. So unless you're well invested in OctopusDeploy already, installing a tentacle on the load-balancing machine seems questionable.
Related
So I have installed netdata on my machine using this tutorial https://www.how2shout.com/how-to/how-to-install-netdata-on-windows-10-wsl.html
I started it in my browser via the provided command 127.0.0.1:19999 and it only monitors and sends performance of my local machine (the laptop I'm using)
I own a website so I tried to enter my website IP + 19999 at the end but of course that did not work.
I'd like to set it up so I can measure live performance from my website.
Any idea how I can do that?
Your website runs on a server that your hosting provider owns. To use Netdata, Netdata would have to already be installed on your provider's hosting infrastructure, or you would require sufficient (effectively administrator) access to your hosting server (or servers) to install it yourself, which many hosting services would be unlikely to provide. If you are using a hosting provider that manages your website hosting you likely don't need Netdata to monitor your website performance - monitoring then is considered to be part of what you pay for.
On the other hand, if you are managing your own cloud infrastructure, it should be easy (and a good idea) to install Netdata to monitor any website servers that run on top of it.
I've inherited a couple of web servers - one linux, one windows - with a few sites on them - nothing too essential and I'd like to test out setting up back-ups for the servers to both a local machine and a cloud server, and then also use the cloud server to access business documents and the local machine as a back-up for these business documents.
I'd like to be able to access all data wherever I am via an internet connection. I can imagine it running as follows,
My PC <--> Cloud server - access by desktop VPN or Web UI
My PC <--> Web Servers - via RDP, FTP, Web UI (control panels) or SSH
My PC <--> Local Back-up - via RDP, FTP, SSH or if I'm in the office, Local Network
Web servers --> Local Back-up - nightly via FTP or SSH
Cloud Server --> Local Back-up - nightly via FTP or SSH
Does that make sense? If so, what would everyone recommend for a cloud server and also how best to set up the back-up server?
I have a couple of spare PC's that could serve as local back-up machines - would that work? I'm thinking they'd have to be online 24/7.
Any help or advice given or pointed to would be really appreciated. Trying to understand this stuff to improve my skill set.
Thanks for reading!
Personally I think you should explore using AWS's S3. The better (S)FTP clients can all handle S3 (Cyberduck, Transmit, etc.), the API is friendly if you want to write a script, there is a great CLI suite that you could use in a cron job, and there are quite a few custom solutions to assist with the workflow you describe. s3tools being one of the better known ones. The web UI is fairly decent as well.
Automating the entire lifecycle like you described would be a fairly simple process. Here's one process for windows, another general tutorial, another windows, and a quick review of some other S3 tools.
I personally use a similar workflow with S3/Glacier that's full automated, versions backups, and migrates them to Glacier after a certain timeframe for long-term archival.
My boss wants me to test our web application to demonstrate how much traffic the web site can handle.
The app is a JSF/JPA/Oracle application, everything is running on one rack mounted server at a local hosting company's data centre.
The truth is, we don't know how much traffic it can handle before it gets unresponsive or shuts down altogether.
What would be a good way to pound on the web app from the internet, simulating tonnes of traffic? I was thinking of setting up a number of different Amazon EC2 virtual machines and getting them to pretend to be web visitors, but is there some kind of software I can run on these machines so they behave like lots of web visitors?
Also, it doesn't have to be free, I'd be willing to apy for a solution or a tool.
Any suggestions or help is greatly appreciated!
Thanks, Rob
Try this, mate:
http://httpd.apache.org/docs/1.3/programs/ab.html
Did you try setting up Selenium-Grid to run tests in parallel. This will simulate actual user actions on the application and in-turn can stress the app server. You can install a performance monitoring utility on the server to monitor the load generated.
Or you could also use J Meter to simulate multiple users accessing your application. You can talk to your network admin team to route this traffic via internet instead of your local internet.
I'm trying to setup a server based on our needs for a new website. Basically, I need to build a website based on social engine, and according to the platform's requirements (found here: http://www.socialengine.net/support/documentation/article?q=152&question=SocialEngine-Requirements) it requires the webserver to be Apache based.
Now my issue comes with the addition of a web application that needs to be included in the site. The web application requires the server to be capable of Asynchronous Request Processing, and is currently only supported by Tomcat or GlassFish.
I found a couple tutorials such as this one http://www.serverwatch.com/tutorials/article.php/2203891/Integrating-Tomcat-with-Apache.htm that explain how to "integrate" Tomcat into Apache. Would a server running Tomcat alone be able to handle the applet needs as well as serve the Apache (assuming HTTP) needs from the Social Engine platform? Are there any hosting providers any of you would reccomend?
Although I've done alot of front end stuff before, this is the first time i have to deal with any of the back end details, so my knowledge of server side functionality is really garbage. Please let me know if I'm not asking the right questions.
Thanks
You wouldn't really be able to use Tomcat for both apps, since the other one needs PHP. It's pretty common to have both Tomcat and Apache running on the same server. You might want to look up more recent documentation on mixing them, even this but definitely have a look at mod_proxy_ajp.
What's the other application? It's a little tricky to set up Asynchronous Request Processing if you are new to server apps, but there is also a lot of documentation, so if you're game, you can probably figure it out OK. You might also want to see if that app would work with node.js (hosting info here)
If you want to set it all up yourself, you could get a virtual private server from Rackspace Cloud or similar host or get a shared host that has the required apps already set up, which would limit your ability to customize the environment and may require 2 hosting plans, but would be easier to set up. It also somewhat depends on if both apps need to be on the same machine for any reason and/or on the same domain.
A regular LAMP stack will run SE4 just fine, however, you will need to do some tuning to get the page loads under 3 seconds. You will want to remove any Apache modules that you aren't using with a2dismod. For instance, if you're not using any Ruby on the site, a2dismod ruby. This will help get memory usage under control. APC is a must.
For a much more in depth read on tuning php/apache, please read this: Performance tuning on Apache, PHP, MySQL, WordPress v1.1 – Updated
Sorry for my ignorance here, but when I hear the word webserver, I immediately imagine Apache, although I know people use Microsoft's IIS too. However since I've been hanging out here at Stackoverflow I've noticed lots of people use Glassfish.
Which made me wonder, why would I want to use Glassfish (in the sense that I'm interested, but I don't really understand why it might make my life easier). From what I read it's Sun's open-source derivate of Apache's Tomcat, thus I imagine it's a good (or great) quality product. But since I don't know its strengths and weaknesses, I don't know when it would be wise to choose Glassfish over another server. Could anyone elaborate ?
GlassFish is an Application Server which can also be used as a Web Server (Http Server).
A web Server means: Handling HTTP requests (usually from browsers).
A Servlet Container (e.g. Tomcat) means: It can handle servlets & JSP.
An Application Server (e.g. GlassFish) means: It can manage Java EE applications (usually both servlet/JSP and EJBs).
You should use GlassFish for Java EE enterprise applications.
The need for a seperate Web server is mostly needed in a production environment. You would normally find a Application server to be suffice most of your development needs. A web server is capable of holding larger number of active sessions and connections, thus providing the necessary balance without performance costs.
Stick to a simple web server if you are only working with servlets/jsps. It is also to be noted that in a netbeans environment, glassfish has better support than other App servers. In the context of eclipse though, WSAD and JBoss seem to the preferred options.
Glassfish will soon release the modular kernel.
This means that the containers you need start up and shutdown as you need them. I.e no EAR deployed, EJB container won;t start up. This seems to have made it very good for development as it can start and stop very quickly. This takes it a lot closer to development environments like Rails (where redeployment is a massive part of your development)
I have used GlassFish server for developing Web Services.
It provides a very interactive Admin Console where admin can test the Web Services.
I really find it helpful while developing Web Services