Servers :: Need A VPN / Nagios Box - Ubuntu Right Choice For This?
Jun 24, 2011
I have a bunch of Windows servers and they all connect to 2 networks. One of them is all public IPs (an entire /24) which is protected by a pfsense firewall. The other network is just a 48 port gigabit switch that each machine accesses using a private (192.16 static IP on a separate nic. There is no gateway/DNS/DHCP server on this private network and we want to keep it that way.
I want to deploy a ubuntu server that will connect to both networks. This server will not sit behind our firewall. It will have a public IP address from our /24 and be connected to the switch that feeds our firewall and a second nic with a static private IP that will be connected to our private network. This server will need to run nagios, run a few command line items that grep log files and serve the output via apache, and act as a VPN to allow an outside machine secure access to the private network. Sitting on this private network are various web based GUIs for the switches, UPS boxes, etc that we do not want exposed directly to the Internet. Both of these networks are mission critical so I can't change any existing settings and I can't add anything to the existing firewall. There would only be a couple of VPN connections at a time.
Do you think that ubuntu 10.04 LTS server (32 bit) would be able to handle this? I am looking at running it on a supermicro Atom D525 box with 3G of ram and a small SSD for storage.
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Apr 7, 2011
I'm installing Ubuntu 10.04 server on a HP MediaSmart server. Attached is an eSATA multi-bay with four hotswap disks.Since these disks are rotating on a daily basis I'm looking for the best filesystem for hot swapping purposes. If there is no choice I'll just stick to ext4 with safe unmount. But if its possible I'd like something so I could pull the disk out without damage. In my case it would be safe to assume that the disk hasn't been written to in the last 5 minutes before rotating.
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Jul 20, 2010
I have been running a webserver for a time now. And for fun I thought I would use Nagios for monitoring it. But the installation instruction says install this on webserver01 and that on webserver02. I only have one server and want to monitor it remotely from a simple browser. Is this possible or does Nagios need at least two separate servers? Can't it just run it on my one server?
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Dec 2, 2010
i have configured nagios NMS on ubuntu 10.10 server edthe same is accessible with [URL]but i am unable to access it over the LAN ....have turned off the system firewall and changed iptable rules to accept all ...however after doing so gave error while starting the apache server itself
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Jul 21, 2010
I need to set Nagios and permissions. I get one critical error in Nagios regarding disk. It says:
DISK CRITICAL - /home/administrator/.gvfs is not accessible: Permission denied
I guess Nagios need a permission to access the administrator folder. How can I set up a permission to fix this error?
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Jul 25, 2010
I'm trying to setup nagios, and I've looked at several guides but none of them seem to address my problem.Here's the clearest guide that I followed URl...I followed all the instructions on that basica guide, except disabling SELinux. I changed SELinux rules based on URL...I'm not getting any AVC Denials, so that's not the problem. Nagios and Apache both start fine. If I go to my local IP, I get the standard Apache test page. URl...(address from all the guides I read) doesn't resolve.I know that Nagios is at least running from "service nagios status," and I have gotten two alerts emailed to me: swap alert (I don't have swap configured) and disk space.
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Jul 9, 2011
Error: Cannot open log file '/usr/local/nagios/var/archives/nagios-07-08-2011-00.log' for reading!
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Aug 4, 2010
How to see the code behind the nagios plugin: Nagios Checker? I opened the folder which i have downloaded. After that where do i have to go to see the codes? Is it in App_Codes?
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Jul 15, 2011
So we monitor all of our disk space, but only get pages for critical. What we would like to do is have one email sent to our team every month with all the "Warnings" for our disk. I have been searching and haven't found a way to do this. Any suggestions?
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Aug 4, 2010
I installed Nagios on my Ubuntu 10.04 server using apt-get and when I accessed the web console, everything was OK. I made some changes to apache (creating some new virtual sites) and since then Nagios gives me a warning message for HTTP with the message, HTTP WARNING: HTTP/1.1 404 Not Found. The sites that I created are working perfectly. I noticed that the attemps are 4/4. Does this need to be reset or does Nagios automatically reset that once it detects the issue is resolved?
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Aug 6, 2010
When would ftp be a better choice than sftp?
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Apr 22, 2010
I've got a machine with P4 1.6GHz and 512M ram. It's a bit laggy when running ubuntu 9.10. Especially after i open up Eclipse, things start to get very slow. I'm thinking about installing Xubuntu, but am wondering if installing debian(or arch) then xfce would be equivalent to installing Xubuntu, or would it be faster when using debian(or arch)+xfce combination?
Reason why I'm thinking about this is that the Ubuntu family including Xubuntu, tendd to integrate too much stuff for ease of use, while installing system from scratch and then building up from that could avoid those unnecessary extra features. What do you guys think?
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Jul 27, 2010
I want VLC to be the default media player in my Ubuntu 10.04 installation. However, even though I right click on a media file and select it to open with VLC and ticks the "Remember this application for ..." box, files of this type still keep opening in the "Movie Player" application. It seems the "Remember this application for ..." box has no effect what-so-ever. Anyone know what might be wrong? Some configuration file somewhere that I don't have the right to or something?
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Nov 15, 2010
According to some info I've been given that helped solve a video flicker, I'm in need of a replacement graphics card for my new machine. can I have working flicker free video and CCSM effects? or is it a case of one or the other?
Quote:It is hardware dependent...in my experience it varies from card to card.Current Machine spec: Asus M4A87TD/USB3 870 Socket AM3 8 Channel Audio ATX Motherboard Corsair 4GB (2x2GB) DDR3 1333MHz Memory Kit Unbuffered CL9 AMD Athlon II X2 250 3.00GHz Socket AM3 2MB L2 Cache Retail Boxed Processor Asus GeForce G210 512MB DVI VGA HDMI Out PCI-E Low Profile Graphics Card I want to get rid of the graphics card anyway, for something passive (very annoying fan on the current one), but was planning to just get a passive g210. Does anyone have any other suggestions that might allow me to have desktop effects and reasonable flicker free video playback? similar in budget to the original would be good.
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Jan 22, 2011
When Starting Up My Computer It Automatically starts up Windows 7 Home Premium I didn't see a choice for which one to boot up with. I have it fully installed.
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May 23, 2011
How could i have the choice between KDE, Unity, and Gnome ?
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Feb 9, 2010
When im trying to open ubuntu there displaying.error : initrd is too big press any key to continue..if i press any key going back to the operating choice
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Mar 2, 2010
I am new Ubuntu. I have a new Dell Mini10 running that I have configured and running. I want to clone or backup the system at it's current state. I have been looking at the options and Clonezilla seems to be recommended often. Are there other choices that are easer or better? My real goal is to make a bootable DVD that will restore my system back to the point it was cloned.
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Mar 25, 2010
I tried searching forums before posting, but it was hard to search due to the specific nature of what I want to do.
I have one hard drive with windows XP on it. Another with Ubuntu. As it stands there is no link between them. Is it possible to create a dual boot using these disks? - I do not want to reinstall any of them.
Preferably, I would like the boot choice (or booter? - not really sure what I'm talking about) to be on the newer Ubuntu drive.
It is on an old machine with 256MB Ram. So slow in fact, I'm going to change the desktop environment to Xubuntu - but that's mostly irrelevant.
As I understand it, I should make the Ubuntu drive master, XP as slave... but then what?
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Jun 3, 2010
This morning I had 10 updates for my system including a new kernel 2.6.28-19 During install I was asked a question as to which menu.lst to use. I was completely confused as there was no documentation explaining the choices, so I took the default, keep my current menu.list. I did that because I have a modification to my menu.lst having added acpi-noirq I was afraid I would loose that and not be able to boot. Anyhow I ended up with my same menu.lst without the new kernel. So it booted the old kernel 2.6.28-18.Where is some documentation to give one some idea of which of the about 8 choices to make? I can't be the first with this problem. I have another computer to undate that has a different mod to menu list.I would like to know the correct way to choose the proper choice. If I don't get an answer I will try to document in more detail the choices.
I got around the problem by editing menu.list and copying the entries for 2.6.28-18 and changing them to 2.6.28-19 Many folks might not even realise they were running on the old kernel.
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Jun 9, 2010
I converted my parents to use Ubuntu on their laptop, and they seem to like it. One minor issue though is that the microphone input preference keeps reverting, so every time they want to use an internet phone, they have to reset it manually by going to System/Preferences/Sound/Input and choosing the external USB microphone. Then they can launch the phone program (Skype in this case, but it doesn't matter which one.) My Dad asked me that he doesn't have to do this on Windows so why does he have to with Ubuntu? I am hoping there is a way for me to fix it so he doesn't have to. (We don't have a microphone that plugs into the "internal audio analog stereo" line.)
When they finish talking, they unplug the external microphone and this is when the preference seems to revert to the "internal audio analog stereo" setting, which makes sense, but when the external microphone gets plugged back in, it would be great if it "remembered" it. Is there a way to make this happen automatically?
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Jul 5, 2010
Running 10.04 Ubuntu desktop. When on a website that requires flash, it gives me the choice of three.
Adobe Flash
Swfdec SWF player
Gnash SWF Player
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Jul 7, 2010
I put windows 7 on my desktop which is a dell E521. I had windows vista on their previously and had a dual boot setup on it. When I installed win 7 on I just did the upgrade so I wouldn't have to reformat my hardrive and now when I boot up it will not show the option to boot into windows or ubuntu.
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Oct 10, 2010
Just got a new laptop with Win7 and downloaded Ubuntu 10.10 to do a dual boot. Ran through the graphical installer setup my partitions and either I missed it or it did not give a choice of where to install Grub2.
Everything is working fine but of course Grub is my boot loader for Windows and Ubuntu which I do not like and never install that way. I have just had too many problems so I normally use EasyBCD.
So the question is, did I just miss the option to install Grub2 on the partition where my root is or did this option change? The last version I used was 9.10.
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May 18, 2011
While I'm a fan of Gnome, I'd prefer if the user "kids" logs in as KDE by default. Is there any way to toggle which desktop environment it automatically logs in to?
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Apr 25, 2010
I am having the problem of intermittent wireless connectivity
When I run this comman:
dmesg | grep wlan
Results:
[ 19.209113] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 48.657772] wlan0: authenticate with AP 00:22:3f:96:ff:06
[ 48.662285] wlan0: authenticated
[ 48.662292] wlan0: associate with AP 00:22:3f:96:ff:06
[Code]...
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May 19, 2010
I installed Lucid Lynx in my p4:2.66 hz machine with XP sp3 pre-installed and the system booted just fine with dual boot option. Then I updated my Lucid. All updates were downloaded. But during update installation a power failure caused PC reboot. Again I started update manager and it gave me option for "Partial Upgrade". I did the same and it instructed me to reboot. The the real damn thing happens now when I rebooted, In the GRUB menu it showed only Memorytest options. I see no OS choice there, I tried to reinstall GRUB from live CD with mount options. And it showed no errors during the procedure. I rebooted but the same problem exists.
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Sep 14, 2010
Linksys WUSB54G. Used to work. Installed Lucid. Drivers are installed, I can see my access point. Try to connect, it times out. dmesg gives me deauthenticating from [MAC ADDRESS] by local choice (reason=3).
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Mar 4, 2011
I am dual booting Windows and Ubuntu 10.10. I installed StartUp-Manager so that I could easily make Windows my default OS upon Startup.I did a sudo apt-get update / sudo apt-get upgrade and now I have a new kernel. This moved Windows down in the list, so now MemTest86 is the default OS upon Startup.I want to make Windows the default always, not just until the next Kernel upgrade comes through.
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May 11, 2011
I spent a good amount of time setting up 11.04 the way i like it to run in classic mode with my firewire soundcard acting right and the apps i like. I added some new repositories yesterday and did an update and after that i restarted and all of the sudden ubuntu classic mode isn't even a choice any longer and unity is acting really strange and doesn't look right.
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