We have an Ubuntu VM with a MAAS controller and only 1 node. We are not able to install juju.   Is there a minimum node requirement for MAAS?
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I've browsed through so many different sites and found so much contradictory information. As I am getting tired of this and do belive this question affects many other users, so I would like to collect the "once and for all times" answer. Unfortunately, the documentation on MaaS and Juju is ... well, not the best, sorry to say that.  What are the minimum system requirements for setting up a MaaS cluster, which is going to be orchestrated with juju-jitsu?  Do they need to have the exact system specifications or can I just combine different hardware?  What are the minimum requirements for the master machine?  E.g. "You need at least 8GB of RAM, a dual core CPU with at least 3.0 GHz."  How many machines to I need to deploy MaaS on?  I've read six machines, nine machines, and so on. I clearly want to know: "You need one for the Master and e.g. five nodes."  Do I need to attach as many NICs (network interface cards) to my master machine as there are nodes, or can I simply attach two NICs and a switch?   One NIC for connecting to the internet, one for handling the MaaS tasks, connected to a switch, which connects my nodes to the master?  Is Juju now ready for local deployment?  The last time I experimented with juju and had to reboot my machine, the services orchestrated by juju were gone. This was an issue I also found on the official juju site. Unfortunately, as mentioned above, the documentation is not the best, so I could not find the necessary info on that again. So:  Can I use juju on a local environment or will a reboot break my setup?
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I need to increase the default java heap size to get OpenNMS Linkd service running smoothly, and fortunately I have 4/5 of my total installed memory free at any given time even when their is maximum load on the server. still java is not performing to it's bast. hence I need to increase the default java heap size.  Can anyone tell me how to do it?  I'm using Ubuntu 12.04 lts &amp; total memory installed is 16 GB out of which generally 2GB to 4GB is used.  I have already checked below questions and they did not help me resolve my issue.        Please feel free to edit or comment for any additional details required.
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Is there a way to run Linux operating system on a virtual machine which aggregates the resources of physical machines on the local network and acts as a single super-computer? If possible, how?  Thanks.
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I'm trying to update my vmware player Ubuntu vm to Saucy Salamander via the Software Updater app. Sadly while it was installing packages vmware player gave this really weird error I've never seen before. I can't remember what it was, but I could either proceed by clicking retry or pass onto vm, or similar options. The pass onto vm option caused the vm to crash completely.   Upon trying to boot up the vm again, I got this strange error saying I can either take ownership of the vm or cancel the boot. Really weird, but the take ownership option said it could damage my vm.  I decided to shut down Windows 7 instead. Upon restarting my pc, I can boot up my vm fine, and while Software Updater starts up okay, it keeps greying out when it finishes checking for updates.  Launching Software Updater from the command line by running   $ sudo update-manager   reveals these errors are occuring:  Error loading .desktop file /usr/share/applications/gnomine.desktop: constructor returned NULL Error loading .desktop file /usr/share/app-install/desktop/gnome-mines:gnome-mines.desktop: constructor returned NULL Error loading .desktop file /usr/share/applications/gnome-sudoku.desktop: constructor returned NULL Error loading .desktop file /usr/share/app-install/desktop/gnome-sudoku:gnome-sudoku.desktop: constructor returned NULL Error loading .desktop file /usr/share/applications/mahjongg.desktop: constructor returned NULL Error loading .desktop file /usr/share/app-install/desktop/gnome-control-center-signon:update-accounts.desktop: constructor returned NULL   No idea how to proceed, but this is my third boot now and it's the same story.   Ubuntu working perfectly, but Software Updater/update-manager is completely fried. Any advice guys? Ubuntu nooby talking here, but does this mean the problem is superficial? It's just something to do with the GUI and can be easily fixed? It's not like I was attempting anything mental for goodness sake.   Could this fix the error?  sudo apt-get install -f   Before I run it, what does the f flag do exactly?   Update  Left it running for about 60 minutes, and it resolved itself! It says I can only do a partial update though, and that problem can be caused by damaged or unofficial software. Is this damage caused by the error before? Full message:  Not all Updates can be installed Run a partial upgrade, to install as many updates as possible.  This can be caused by: * A previous upgrade which didn't complete * Problems with some of the installed software * Inofficial software packages not provided by Ubuntu * Normal changes of a pre-release version of Ubuntu  Partial Upgrade Close   Should I be worried? The update is still in process so I don't know if I'll run into the same error again.
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Beside our internal IT infrastructure, we've got around 500 Linux machines hosting our services for the on-line world. They are grouped in a bunch of clusters like Database A-n, Product A-n, NFS, Backoffice and so on. Furthermore, they are administered by an external provider, according to our specifications and requirements.  However, we face a lot of trouble during (web-) software development, roll-out and deploy - especially because the dev- and staging-environments have almost nothing in common with the live systems (I spare out the nasty details..).  Thus, I've tried to create virtual machines, copied the various live-systems as exactly as possible and prepared them to connect to e.g. the development-databases instead of the "real" ones transparently for developers (they aren't root). This works pretty well, but...  I was wondering how one could administer those systems remotely and in bulk? Is there some software family I'm not aware of? Or, at least, some techniques or principles one should be familiar with?  We would provide every developer with a bunch of images to be run locally (VirtualBox). The QA dept. would get virtual clusters (XEN or Hyper-V). If I need to provide an additional server-module, re-route a new database connection or just want to update everything provided by the package manager... how could I possibly do that without being forced to log on to every system and/or ask my colleagues to download and run some fixture-script?  I believe there are plenty of solutions. Well, somehow I'm too stupid to enter the correct keywords into the search engines... Or isn't this issue as trivial as it sounds?  For the record:   Almost all systems are running Debian GNU/Linux 6.x "squeeze" No developer is forced to use a particular OS at his/her workstation The budget is limited, of course, but not too small to buy proprietary software A solution that would involve our aforementioned provider is preferred
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One of the local college in my home town in India is planning to implement mass distribution and usage of Ubuntu Linux for the purpose of education. I have been asked by my CTO to look into the matter and bring out some valuable suggestions with which we can roll out multiple installations on more than 450 computers!  I have know a way in Windows that uses the Ghost technique to address this issue. Our purpose is similar in this case but don't know how to proceed further. I have been using Ubuntu for the past six months to get the feel and understanding of the OS and I have to admit it that from the very first day, I was almost into it learning, reading, learning and asking others to use it too. Just amazing!  Help in any form is appreciated.  Note: All the 450 computers are of different configurations/variety of different motherboards, hard drives, ram, etc. But they all meet the minimum criteria for Ubuntu installation's hardware requirement.
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(quote from chat)     Got a PPA on launchpad for source packages for an IRC bot project I'm associated with (since its all the intermediate packaging for the stuff between releases, it's classified as an "experimental" PPA). Question: I've already packaged the stuff for a lucid build. Any clue how I'd be able to create the same packaging, except package it for maverick, and put it up to the same PPA that I've put the lucid packaging to?
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I am trying to get Juju working on Windows 8 but I am running in to some errors when trying to get juju to see my ssh keys:  C:\Users\username&gt; juju bootstrap error: error parsing environment "azure":     read C:\Users\user\SkyDrive\Documents\Azure\ssh\: The handle is invalid.   I've added a public key I generated with putty to the directory above called azure  My environments.yaml file has this in it:  authorized-keys-path: C:\Users\user\SkyDrive\Documents\Azure\ssh\   Any ideas?
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I am currently running Ubuntu Server 10.10 through a virtual machine to use as a stack for web development and a chance to get to grips with the Ubuntu command line, however I'd really like to set up a clean, minimal install with only the bare minimum of core utilities so I can get only what I need as I go along.  The Ubuntu Server iso seems to install a lot of extras already and I'd prefer just the bare minimum so I can spend more time aquainting myself with the installation and set up of the packages I need. Can I obtain an image that does this?
18017
I want to install metasploit and armitage on my ubuntu 16.04 LTS laptop running kernel 4.6  I've read blogs and posts on how to install it but the problem is is that they are outdated. The packages are not there anymore and or the commands dont work.  If anyone can give me an updated tutorial on how to install it that would be great. I also think other users that see this post and want to install it will also be thankful. Thanks.
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I'm wanting to do a minimal install of Ubuntu 20.04 LTS on a VM I'm making.  My original thought was to use either the network installer or the minimal CD, but both of those seem to be gone right now.  How would I be able to get that kind of install on 20.04 LTS?
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I tried sudo yum update but it just keeps java "1.7.0_75". I need 1.8 for it to work with another application but can't figure out how to upgrade it. Do I need to manually install it somehow? There's not much information on this on the internet as far as I can see. Specs:   java version "1.7.0_75" OpenJDK Runtime Environment (amzn-2.5.4.0.53.amzn1-x86_64 u75-b13) OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)   When I try update now:     [ec2-________]$ sudo yum update Loaded plugins: priorities, update-motd, upgrade-helper amzn-main/latest                                         | 2.1 kB     00:00 amzn-updates/latest                                      | 2.3 kB     00:00 No packages marked for update   Is there anything else I need to do? Thanks.
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I'm on a new computer and I haven't downloaded Data Loader in years but now, I'm having all kinds if issues.  So apparently, I have to download Zulu JDK 11 (msi) first, Then download and unzip Data Loaded and install. Which opens a command prompt... After I follow all of the command prompt steps, then I get an error.  Am I supposed to install Java too? And if so, do I download Java or Zulu first?  Apparently a lot of people are having this same problem with no resolve.  Any help would be much appreciated.
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I have multiple Ubuntu machines at home and a pretty slow internet connection, and sometimes multiple machines need to be updated at once (especially during new Ubuntu releases.)  Is there a way where only one of my machines needs to download the packages, and the other machines can use the first machine to get the debs?  Does it involve setting up my own local mirror?  Or a proxy server?  Or can it be made simpler?
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I've deployed Openstack using juju, and everything looks normal except that I cannot browse to openstack-dashboard. I get error 500 Internal Server Error.  I looked through apache2 logs at that node and found  repeated every couple of minutes.  I tried to destroy the service and deploy it on other nodes; co-located with keystone node, then glance node, then by it self. Yet I get the same errors.  It looks like it needs deep python debugging which is weird since this is the typical charm deployment on a normal server. And someone must had tried to deploy this and succeeded!  I'm deploying openstack Essex version 2012.1.4-dev , Ubuntu server version 13.10 , django version is: (1, 5, 4, 'final', 0) And   Please help me :)
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Based on some excellent feedback by Mark here (), today I was able to use the vmware converter to clone my production server for a staging server.  However the nic won't come up no matter what I do. I attempted to inistall vmware tools, as I suspect that the fact that it is not installed might prevent the nic from working. (I have the nic set as a vmxnet3 card in the vm settings). The install failed because there were several dependencies missing as well as the Linux headers. Given that Ubuntu 9.04 has been EOL'd, the packages I need to install to get the vmware tools to install are no longer available. I doubt the ubuntu 9.04 install CD has the packages on it.   What are my options? I'd rather not upgrade the version of Ubuntu yet, as the point of the vm right now is to maintain parity with the production server. Might I have better luck resetting the driver to use vmxnet2 instead of the vmxnet3?  Thanks in advance!  Chris
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I am having an issue with installing Juju and bootstrapping. I have the Swift storage setup, and the new bucket gets created. The tools have been synced, and all that looks fine.   However when I attempt to bootstrap I get the error: "Cannot start bootstrap instance: no "precise images in RegionOne with arches."   In another bucket [Glance] I do have the Percise AMD64 image within it. I've even added the line for the "public bucket url." However, juju is still having this same issue.  Error:   juju -v bootstrap 2013-07-31 22:08:05 INFO juju provider.go:115 environs/openstack: opening environment "openstack" 2013-07-31 22:08:06 INFO juju provider.go:417 environs/openstack: bootstrapping environment "openstack" 2013-07-31 22:08:16 INFO juju tools.go:26 environs: reading tools with major version 1 2013-07-31 22:08:16 INFO juju tools.go:53 environs: filtering tools by series: precise 2013-07-31 22:08:16 INFO juju tools.go:76 environs: picked newest version: 1.10.0 2013-07-31 22:08:28 ERROR juju supercommand.go:235 command failed: cannot start bootstrap instance: no "precise" images in RegionOne with arches [amd64 i386] error: cannot start bootstrap instance: no "precise" images in RegionOne with arches [amd64 i386]   The version that I am using is: 1.11.4-raring-amd64  My entire environments file is: [I removed all of the bits about MAAS, Amazon, and local]  default: openstack  environments:   openstack:     type: openstack     admin-secret: f[...]2     control-bucket: juj[..]2a     auth-url: http://127.0.0.1:5000/v2.0/     # default-series: precise     auth-mode: userpass     username: admin     password: [XXXX]     tenant-name: admin     region: RegionOne     public-bucket-url: https://swift.canonistack.canonical.com/v1/AUTH_526ad877f3e3464589dc1145dfeaac60