Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.

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Connecting to screen

How do I attach a screen? I can see a screen is running in the following output, but can not connect to it. [root@vishnuvm6 ~]# screen -ls There is a screen on: 15941.pts-18.vishnuvm6 ...
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1answer
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'Memory read error',Sever hardware error?

hello I got a error about my server which is running CentOS5.5. MCE 20 HARDWARE ERROR. This is *NOT* a software problem! Please contact your hardware vendor CPU 1 BANK 8 TSC 6ab9ff9745f62 [at 2394 ...
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6answers
474 views

How to Minimize Linux Server Reboots

Last week there were a fair few comments on a slashdot article about whether Unix (or Linux) machines ever need to be rebooted. More than a few of the commenters mentioned having machines with ...
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1answer
40 views

Tool for purging unneeded backups

I'm in the common situation where the one of the linux servers I use for storing backups is filling up. I'm wondering what tools are available for doing this. Ideally, what I would like is something ...
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3answers
284 views

Experience with Intel X25-M 160GB and Oracle

We're considering building an Oracle database with 12 Intel X25-M G2 160GB drives in software RAID10. It'd be running Linux. Database gets some very heavy write activity during the early morning data ...
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1answer
413 views

MySQL not appearing in PHPInfo

So I installed mysql on my linux box and I can login into it using the command line I can create a database, table, all that I made a phpinfo() script and ran it, but it doesn't seem to recognize ...
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2answers
460 views

How do I enable SELinux when booting a ramdisk from a CD/DVD?

I have a bootable DVD which boots the same Kernel as the Hard Drive (which uses SELinux). I have copied /etc/selinux and all kernel modules to my ramdisk, and have tried various combinations of ...
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1answer
211 views

Can not upgrade to python-2.4.3-43 on Red Hat Linux 5

I'm trying to upgrade using package python-2.4.3-43.el5.x86_64.rpm, but everything I do so I get a failed dependency requirement for libpython2.4.so.1.0, but I've checked /usr/lib64 and the file is ...
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2answers
461 views

Fedora: How to migrate production web server to new server box?

Our company has a co-located production web server hosting multiple websites and other applications running on Fedora 13. We want to move everything on that server over to an internally-hosted box ...
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5answers
2k views

How to route all traffic to one host trough one of two nic's on linux

Setup as follows: One gateway/firewall One switch Two servers behind firewall with 2 NICs each. Each NIC is connected to the switch. The servers are running Ubuntu server. One of the two NICs ...
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5answers
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How to log commands/logins in linux?

I'm feeling that some people are using the root, how i can log all commands and connections times including ips made to the server (ssh) from all users? history command is not enough
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5answers
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after installing monit when i do monit status myproc i get “error connecting to the monit daemon”

after installing monit when i do monit status myproc i get "error connecting to the monit daemon" I read somewhere that The status command won't work in the case that monit is running indaemon ...
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1answer
170 views

Best OS for an old HP Netserver LH 6000/r Server?

I've an old HP Netserver LH 6000/r server and would like to know which linux distribution will be best suited for it. We plan to use it as a development server (running tomcat instances, and some ...
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4answers
615 views

Solution to Manage and Monitor (Ubuntu) Machines

I'm looking for a tool like Canonical (system management and monitoring for Ubuntu) that is Open Source and free. The goal is to manage a dozen or so KVM machines for private testing purposes. I know ...
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2answers
105 views

What web server / plat form should I use? (Cloud / virtual / dedicated / shared)

Hi I am an experienced website developer but have not had much experiences of hardware server con fig. I am starting a new job and need to sort out the companies website requirements. They need php ...
3
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1answer
149 views

bind commands to an ssh

I'm new to this, wondering if someone could help. I need to ssh to a server and bind commands to it, which copies a directory, zips it up etc.. ssh user@123.45.67.89 ; cd /to/directory/ ; zip these ...
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3answers
216 views

Connect Wireless and Wired network

What is the best solution to connect a wireless to a wired network, so that both get their IP from one DHCP server and can communicate with each other as if they were the same network? The wireless ...
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1answer
178 views

iptables with non_transparent squid proxy

iptables has been working well with squid transparent. but with squid authentication method, its has some problems. due to documents i found that, because suid in authentication mode, is destiation ...
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5answers
4k views

Do you know any Linux based CCTV solution?

I'm looking for CCTV solution. I found this http://www.zoneminder.com/ but last version has been released about 2 years ago.
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1answer
212 views

Fedora 14 - Error 5 - No space on Disk - After installation

I am new to Fedora, am still figure my way through it. I was going about tweaking it and preparing it to my needs, While installing through yum I dont have much other than the fact that I have to ...
4
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5answers
2k views

DHCPDISCOVER requests from an off-by-one MAC address

In a Linux DHCP server I'm getting a bunch of these log lines: dhcpd: DHCPDISCOVER from 00:30:48:fe:5c:9c via eth1: network 192.168.2.0/24: no free leases I don't have any machines with ...
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5answers
517 views

Scratch files in /tmp getting mysteriously deleted

I have certain files in a /tmp subdirectory that a script I wrote uses for scratch. The opens and closes these file perfectly fine for a few hours. Then, out of nowhere, the files are no longer found. ...
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2answers
2k views

MongoDB Sharding on single linux machine

Let's say I wanna have a MongoDB Server with 5 shards on one machine and each shard having replica set of 3 servers. Would that increase performance? What are downsides of this?
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2answers
81 views

basic Apache configuration

In a fresh linux instalation, apache's document root points to /var/www/html user apache group apache DocumentRoot /var/www/html <Directory /var/www/html> # ... </Directory> I want my ...
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2answers
2k views

Bind apparently receives responses from queries but then does nothing with them

Basically, I'm attempting to set up a DNS server that points to two other internal DNS servers. Internal DNS servers: 192.168.0.4 // 192.168.0.5 My box: 192.168.97.6 .. name is kerrigan.zipp I've ...
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1answer
1k views

Mount cifs share anonymously

I have a Windows 2003 Server sharing out a few folders as read-only to "Everyone". The server is a domain member, so I'm not able to connect to the share on computers that aren't on the domain ...
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1answer
379 views

Blank screen after grub menu

I just rebooted an Ubuntu Server 10.04. After choosing boot options in the grub menu, though, it just displays a black screen with the blinking white underscore in the upper-left corner. The machine ...
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2answers
2k views

Best practice, or generally best way to set up web-hosting server, permissions, etc

I'm about to set up a server upon which a friend and I will be hosting web sites, and I'll be using Debian. I've set up a LAMP solution many times just to using for local testing purposes, but never ...
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4answers
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Is there a way to do a remote “ls” much like “scp” does a remote copy?

Is there a way to do a remote "ls" much like "scp" does a remote copy in a standard linux shell?
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2answers
821 views

How can i get more user debug logging related to kerberos for alfresco?

I am running alfresco community edition 3.4c on a debian linux. I have problems getting the kerberos authentication in order. The biggest problem is that do not seem to have any sort of user logs. ...
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3answers
1k views

linux, set affinity for init

What is a most convenient way to set affinity mask for init process in linux (debian) on the startup the system? I know about taskset, but i want set affinity mask for init on it's startup, so all ...
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2answers
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dynamic routing between openvpn tunnels

i'm thinking about using dynamic routing [ OSPF or RIP ] via OpenVPN tunnels. right now i have few offices connected in full mesh, but this is not scalable solution as we add more locations. i would ...
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1answer
71 views

When does Apache creates new processes?

We have a situation - we have a lot of webapps on the server and some cron jobs. We are suspecting that perhaps one of the cron jobs is causing growth of number of apache processes. I know Apache ...
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5answers
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Which hard drive corresponds to ata1.00 and ata12.00?

I have an Ubuntu installation which has a lot of hard drives. Two of these drives have hiccups and SMART is reporting errors. However, I cannot figure out how to determine which drive is ata1.00 and ...
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1answer
268 views

Why does dstat show zeroes for disk activity on my virtual private server running Ubuntu?

I'm trying to monitor the number of disk reads and writes on my VPS (Rackspace in this case) running Ubuntu 9.04. I realize there are many tools to do this, but when using dstat 0.7 I tried the ...
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2answers
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Give apache user permission to read directory

UPDATE: Saw this question: Why can't my apache process write to my world-writeable file? Could this be SELinux related, currently /etc/sysconfig/selinux is setting to permissive: ...
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2answers
160 views

self healing of linux servers

I have two identical servers. one is main server which responds to the clients request. Other server will constantly check whether main server in up or not. If main server is down then this identical ...
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2answers
1k views

Customize Red Hat installation - /mnt/runtime directory

I am installing a RHEL 5.5. I have seen one DVD that have a complex %pre script in ks.cfg and it used some customized python scripts in /mnt/runtime. It's cool and I wish to customize installation ...
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2answers
1k views

What's the Busybox default shell?

My guess is this defaults to Bash, but would like to know for sure. Thanks.
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4answers
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SuperMicro BMC on OpenSuSE Linux --cannot access from LAN

I have an (old) SMC-001 IPMI device on an (old) X6DVL-EG2 motherboard. My problem is that I cannot access the BMC from LAN. I'm also getting some interesting output from ipmitool. First, the setup. ...
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3answers
6k views

How can I prevent squid from being detected?

I've set up a proxy server on AWS in the US in order to allow me to browse the american internet from the UK, however I would like to hide this so that the reverse end cannot detect I am using squid. ...
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1answer
229 views

Redis 2.0.3 would not let go of deleted appendonly.aof file after BGREWRITEAOF

Ubuntu 10.04.2, Redis 2.0.3 (more details at the end of the question). My AOF file for Redis is getting too large, to the point where it soon would threaten to take whole free disk space on my ...
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1answer
172 views

How to implement BIND and MSDNS in one Domain

We are about to setup a new web platform with a mix of Linux servers and MS servers, we are planning to utilise MSDNS for our AD domain and MS servers and will use Bind for our root nameservers for ...
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1answer
438 views

Connections stuck in ESTABLISHED state

On a Debian machine I'm having several connections hanging for about 8 hours: tcp6 0 0 192.168.1.35:56312 88.191.79.XXX:25 ESTABLISHED tcp6 0 0 192.168.1.35:43352 ...
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1answer
527 views

After setting new ulimit it comes back to 0

A client of ours running Red Hat is setting ulimit to unlimited in /etc/profile to: ulimit -c unlimited But after a while it goes back to ulimit -S -c 0 Therefore he cannot generate a core dump ...
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2answers
6k views

Sun Grid Engine set memory requirements per jobs

I want to be able to set up memory requirements per job. For instance: to run 5 jobs, for which I know each will need 4 GB memory. I have 16 GB RAM on the Ubuntu server and 16 GB swap. I want to ...
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1answer
82 views

Configuring a network interface as a IO port on Linux Fedora [duplicate]

Possible Duplicate: Configuring a network interface as a IO port on Linux Fedora I was wondering if it is possible to configure a network interface port to be used as a I/O Serial port in ...
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1answer
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OpenVPN tunnel created, but no data seems to be being transferred

I have several Amazon EC2 instances, running Ubuntu, which need to communicate (web servers and a MySQL server). I'd like to use OpenVPN to ensure their communication is secure and to reduce the ...
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1answer
715 views

Heartbeat not taking its resource

So I have heartbeat installed, I followed a config guide where I literally changed the IP's of the guide and it's not working as it should :(. The reason the eth numbers are obviously different. I ...
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2answers
1k views

2nd drive in RAID 1 keeps failing

I have a bit of a problem here. I have a Ubuntu Linux server set up with 2 SAS drives in a software RAID 1 (created with mdadm). The RAID will run fine for a day, I can do cat /proc/mdstat and it ...