Got 4 onbards nics and would like to bond them into a single 4GB pipe. It is running a number of VM's. I can set up a link in my switch but I am stumped on ubuntu side. I think I have to make a file with entries but not sure where or how.
I am trying to setup a 5 monitors setup using 3 cards, but I am stuck at 3 monitors for now. The third card is not plugged yet, so the current setup is:
NVIDIA 8800GT (binary driver 195.***) --->1680x1050 LCD (VGA) --->1680x1050 LCD (DVI) ATI HD5450 (3 output, but I think the OSS driver only support 2, corrdct me if I am wrong) (OSS driver) --->1280x1024 LCD (DVI) ---> 1366x768 TV (VGA)
I have just bought 2 monitors to be used as a x3 multi setup and 2 graphics cards the same make and model (ATI Sapphire Radeon HD5450). This all works in Windows 7 but I have just booted into Ubuntu and removed the old nVidia drivers and got the supported driver. The problem is only 2 monitors are detected as it would seem that it's only picking up 1 card.
Wan (mail) is by way of wireless internet into a linksys (PPPoE) 192.168.1.1 router and then only to the mailserver into etho0 192.168.1.3. Mailserver also has etho2 192.168.1.2 connected to a switch that has 3 pc's attached and an adsl router for pc internet access. Server does not provide proxy for pc's. Just mail. Linksys is 192.168.1.1 and can be seen by the isp provider. The server wan is 192.168.1.1 and can ping to 192.168.1.1 and can browse the net via linksys. The lan connection is 192.168.1.2 and this should be visible to the pc's but it doesn't appear to be and can't ping a pc although the switch lights show it is connected.
DNS is blank for hostname and primary dns is 192.168.1.1. secondary, tertiary and dns search path are all blank. Should there be a default gateway for etho2 even though it only has a lan connection ? If I gave it the adsl gateway then how would the server know which card to use for outside access?
Migrating whole Corporate Windows stations to Ubuntu which is a huge thing so I'd like to do it right and as painless as possible to users.
Here's how it's done now: Main server are already running Linux for years with DHCP, DNS, IMAP, Postgres and SAMBA.
Windows machines are part of Samba PDC and when user logs in, Windows connects to the user profile on Samba server. When user logs out and logs to another computer, he/she has the same files and settings. Basically, nothing is held on local stations.
All printers on the network are printers with network cards, so they are not attached to any computer. The right printer is set with cmd script when user logs in, which makes it possible to make other printer as default if one is faulty.
I am currently reviewing what it means to switch over to Ubuntu and I have the following scenario. If I was to switch all the windows servers over to an Ubuntu solution. I already understand that file servers/ mail servers and resources can be provided Ubuntu 10.04. The issue comes with the user accounts access and control. In a windows environment, I have a domain with sub domain sites. I am able to control passwords in each site separately thought Active directory. I need the instructions on how to setup an LDAP server so that I can control access rights to different services located on different servers.
Example 1. I have 5 mail servers and on the HR side, I have 2 email administrators. I wish to provide them access to only the relevant resources centrally. With out having to add users to different users repeatedly. For example, if I wanted to grant the two administrators access to all five servers. As I understand it, I would have to create the same user on every server and add a public key on every server, as well as set the administration rights for that user on each server individually.
I want to be capable of doing this like I am in a windows environment from some sort of domain controller equivalent. Things that I must be able to do, manage users public keys on each server centrally. Add and remove user's access to each server centrally. Finite control on what each user can do on each server. (i.e., add them to the sudo group or any other group for specific servers/server class I specify). To a lesser extent of requirement, I also need to be able to inform users they have to change there password every 3 months from when they change it. As well as enforce password rules, such as characters complication.
Have a couple of very annoying problems. I recently did a re-install of Kubuntu Maverick on my HTPC/fileserver box.It has an onboard (Realtek?) audio card, recognized as... I think, ALC888... Yeah, not sure, KInfoCenter lists a bunch:ALSA Sequencer DeviceUSB 2881 Device ALSA Control Device (my DVB-T stick)ALSA Timer Device
HDA Intel ALSA hardware specific Device ALC888 Analog ALSA Capture Device ALC888 Analog ALSA Capture Device
We are organizing an event for Open Source technology in college for 100 students and want to provide them access our corporate PC. Our aim is to provide them remote access to few 10-20 machines in our corporate to try out our product which runs on specific hardware.Anyone who can suggest me any secure colloborative tool which will let those students access concurrently.
I can not open the corporate intranet portal, runnnig on windows server 2008 with domain users. In Centos I could login just fine - firefox/konqueror just prompted me for my NTLM windows domain username and password - I typed those in and browers sucessfully loggem me in and I could surf the corporate portal. Note that NTLM authentication is configured as a fallback from kerberos authentication (so told me our portal admin)
However, in Fedora11 when I try to open the corporate (intra(not inter)net) portal, browsers just give me "Bad Request (Invalid Hostname)" error instead of prompting me for my domain username/password. I'm logged in on my F11 box as a local (not domain) user - as I did also previously on Centos Box.
I disabled SELinux, I disabled the firewall but still no luck. Not being able to open the corporate portal is a major showstopper for me, as I can not access many applications hosted there.
I'm familiar with load balancing.. but Is it possible to actually bond multiple DSL lines together? I hear of ways to bond using MLPPP but that requires support from an ISP. Is there a way to actually bond without support from my ISP, or use say a cable modem and a DSL line together for faster speed / diversity?
I have been googling for three days, and I though posting to a forum would be more helpful than throwing my box out the window.
I was able to bond eth1 and eth2 together as bond0, but I am having problems with setting up two gateways on bond0. I can set one (eg ISP1) and all the traffic always routes through that ISP. Thus defeating the purpose of bonding. eth1 and eth2 pull an ip just fine and were able to ping the internet before bonding. Originally, I set the bond0 ip to the same subnet at my internal network, but I read that in order to set up nat you need to have the adapters on two seperate subnets.
Every time I fix one issue with this scenario something else breaks. I have tried dozens of different configurations. I am relatively sure that it is just a routing table issue, but I was wondering if anyone could point me in the right direction.
In my company, they provide linux machines which has a 4 yr old Gentoo linux. Also the OS is loaded through Yukon PXE/netboot environment, and the users directory is mounted from an network location. Also they dont provide root access in these machines.
I would love to use the latest Ubuntu in this machine. Please let me know if it is possible to configure a ubuntu/xubuntu in this machine. I need to be able to login with my corporate user_id/passwd, because many of the tools use this for authentication. so just doing a ubuntu installation in this machine and mounting the n/w location would not help.
I would have presumed that you have 2 x agregates giving 2 x 2gig links and the resilience is that if one nic fails in either bond you carry on with that bond running a 1 gig link until fixed. But, our architect wants to have an active/passive (mode 1) accross bond2 and bond3. I have setup tons of mode 1 bonds and mode 4 bonds but never tried bonding 2 x mode 4 bonds!
I have several servers that we have bonded some NICs for rundancy and they will of course switch from primary to secondary NIC if connection state is lost to the switches they are physically connected to, but is there any way to be able to sense upstream connectivity (off switch) for each NIC and failover even though the NIC itself has a connection state to the switch it is plugged into? We are using Dell managed switches on VLANs with trunking.
We are trying to set up a NIS server on a CentOS system. We need to have a NIS server which can provide NIS authentication to a couple of clients. We are practically new to all this stuff.
Just googled to find some ideas about installing ypserv and ypbind and portmapper. We did all that and also started them successfully. But now the clients are not able to join to the NIS domain . The error log states "YP_DOMAIN NOT BOUND".
I guess we have not entered the /etc/yp.conf, /etc/hosts files properly. Please let us know the detailed steps to setup a NIS server .
Also, please let us know what entries should go into the different /etc/<file_names>? What is meant by HOSTNAME in the /etc/hosts file?
Is there any other files which need to be changed? Are we missing any steps?
Also to add-on, while executing the ypinit command we faced the following error:
At this point, we have to construct a list of the hosts which will run NIS servers. localhost.localdomain is in the list of NIS server hosts. Please cont inue to add the names for the other hosts, one per line. When you are done with the list, type a <control D>. next host to add: localhost.localdomain next host to add:
I am looking for solution that would allow multiple users distributed over several offices in several countries to access one corporate file depository. The features I am looking for, are as follows:
- There should be the way to establish user groups and then define for each folder access level (read/write) for every user/group. Every users is given his login and password. - This file depository should be accessed from both Linux and Windows clients - There should be a way how to sync certain folders/files on one's PC so that it is possible to work off-line and then sync back to the common depository.
Then I plan to launch some regular backup routine on that folder where all the files of depository are kept. I can imagine that the solution could be involving several tools, ie access for Windows users might involve setting up samba server, but I don't know how to establish all the limited access stuff for Win clients via samba.
i had just went out and got some older blade servers and put ubuntu server on it and when i was installing it it asked if i wanted to set an ip because it didnt get a dhcp responce i said no then because i was going to do it later when i do a ifconfig now all i get is a lo interface but if i do sudo lspci i get 2 ethernet controllers and they show as follows 2:03.0 Ethernet controller: Broadcom corporation NetXtreme BCM5702X Gigabit Ethernet (rev 02) 2:04.0 Ethernet controller: Broadcom Corporation NetXtreme Bcm57j02x Gigabit Ethernet (rev 02)
I want to setup a FAI server for which I was looking for the best method of mirroring the Debian Lenny. I want to setup a local mirror with the best method available for mirroring. If it is ftpsync, please provide me some best ways of doing it. I tried ftpsync mirroring but that was not getting properly working due to insufficient I want this mirror to be accessible in my FAI setup so that I can start the installation on multiple machines and start the updates and package installation to be done from the same local mirror.
I recently bought a used Server (FSC RX200 S4) and set it up running Debian 7. Being used to Ubuntu, that was no big deal. It works as it should out of the box. This magic computing machine has four Network cards (eth0 - eth3). Now, I want to set it up as a multi-purpose server. On the one hand, it shall provide a Apache2 webserve, a SQL Server, a File/Streaming Server and so on. I have no problems setting up these.
On the other hand, it should work as a DHCP server in my local lan with some PCs and a printer/scanner. Until now, my cheap router did that job including to connecting me to the internet. Since I can't really set up a proper firewall with that box, I want to use my server for that.
Thats's my desired setup I want to achieve:  Router provides internet connection to Server --> cable goes into eth0  Server therefore has a internet connection --> Some internal magic routes the internet from eth0 to eth1 (preferably as a iptables setup) and does the Firwall & DHCP Service --> cable goes from eth1 to a switch --> switch connects the PCs and printer  PCs have internet and I can use the printer
So far so good, here's what I've come up with. I installed dnsmasq and isc-dhcp-server. I got some config files for both. I got a script to set up my iptables
Iptables script: Code: Select all#!/bin/sh # # rc.firewall # firewall with iptables ... stronger version # FWVER=0.88s
echo -e " Loading STRONGER rc.firewall - version $FWVER..
When starting up the services, I don't see any errors. Still, it doesn't work. My Server loses its internet connection and the PCs connected to the network are unreachable.
I'm wondering a couple of things about my LAMP stacks:
1) How do I get a list of all the network cards installed in a linux box? I've run this command and it shows 2 network cards which is probably all of them: Code: mii-tool -v
2) How can I check the percent utilization of a given network card? I.e., at any given time, what linux command will tell me the how much of a network card's bandwidth is being consumed? I've checked both ethtool and mii-tool and I don't really see any helpful stats.
3) How can I make sure that a linux box will optimally use both network cards? I'm a bit fuzzy on how IP addresses and network cards and hostnames work together.
I have two servers that have been running link aggregation and VLAN trunking for years. I've installed larger drives in one and done a fresh minimal install. In spite of configuring as before the network will not come up. I did discover that a minimal install will not install vconfig which was causing one particular error when the VLANs tried to come up and this has been solved by installing vconfig. However, at this point the problem appears to be not bonding eth0 and eth1. /proc/net/bonding/bond0 indicates: "bond bond0 has no active aggregator"
If I put the old drives back in and boot the old OS everything starts up fine. I was even able to get it working with:
modprobe bonding ip link set dev bond0 up ifenslave bond0 eth0 eth1 service network restart
however, it does not survive a reboot. Is the a bug in the 2.6.18-194.11.4.el5PAE kernel or the network scripts? The the previous kernel I am running is 2.6.18-128.1.10.el5PAE For what its worth, these are the configurations:
I have a load balancer with 2 web servers behind it. The web servers rsync with cloud storage to update their apache directories 1 time every hour. Apache is just running php pages that pull/push data to a DB so they dont need to be updated that often. However I need to figure out how to implement a Master/Master MySQL setup to have my web servers point to for the PHP stuff. I need to implement it without having a single point of failure. The Load balancers are useless for failover as they only detect availability based on Ping request. So putting a master/master setup behind a Load Balancer is out. what is the best way to setup the master/master mysql in a HA setup without the use of a load balancer provided by the host?