CentOS 5 Networking :: Active UNIX Domain Sockets Necessary To Use
Jun 28, 2009Did a netstat -an got this
Active UNIX domain sockets (servers and established)
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Ubuntu :: Active UNIX Domain Sockets?
Jul 27, 2010After my first installation/ version of Ubuntu 64, I performed a netstat and noticed I did NOT have any Active UNIX domain sockets as I do now. After doing some research, I found this is related to MYSQL and server services which I am in no need of running and nor do I want to run if not needed. So exactly what are these services used for, which app is creating this and why?
Is it possible to remove the app or processes if they are not needed? Killing these connections every time they attempt to establish would be rhetorical.
~$ uname -a
Linux panda 2.6.32-24-generic #38-Ubuntu SMP Mon Jul 5 09:20:59 UTC 2010 x86_64 GNU/Linux
:~$ netstat | more
Active Internet connections (w/o servers)
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General :: Netstat Command - Active Internet Connections / Domain Sockets?
Oct 12, 2010When I typed netstat -lna, the output:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:580 0.0.0.0:* LISTEN
...
...
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node
unix 2 [ ACC ] STREAM LISTENING 23581
...
...
Can anyone explain to me:
1. What is "Active Internet connections" & "Active UNIX domain sockets"?
2. What is unix Proto?
3. Difference between LISTEN and LISTENING state.
Fedora :: Attach A RHEL/CentOS System To An Active Directory Domain?
Mar 22, 2009Attach a Fedora/RHEL/CentOS system to an Active Directory DomainBelow is a step by step outline of how to configure a Linux Samba fileserver to use an Active Directory domain for authentication and authorization in place of flat files. Note that this configuration has been replicated using Fedora 10, RHEL 5.3 and CentOS 5 since they all more or less share the same code base.me of the example server in this document is erver1.domain.forest.org, substitute correctly where appropriate. At the very least following packages must also be installed:
sambasamba-commonsamba-clientkrb5-workstationopenldap-clientsIt would be prudent to understand the underlying concepts of how Kerberos and Samba work prior to deploying this type of server. I find that SE-Linux will interfere with Samba services, particularly with winbind. I usually set SE-Linux to be in a permissive mode. It is possible to update the SE-Linux policies but that is outside the scope of this document, i.e you're on your own. In some cases I turned SE-Linux off since it was causing winbind to stop responding.
1. Set NTP to use the correct server for your Active Directory domain:shell> system-config-timeSet the primary NTP server to be your domain/forest NTP server2. Make backups of and edit the following system configuration files:a. shell> cp /etc/resolv.conf /etc/resolv.conf.bakb. shell> vi /etc/resolv.conf
nameserver dns_server1_ip_address
nameserver dns_server2_ip_address
search domain.forest.org
Networking :: Kill/disconnect Unix Domain Socket?
Jan 5, 2010I have described my issue in detail here: [URL] basically, I am having a mysql server which keeps piling up on it's unix domain socket connections.
here's a small example of netstat as it looks now (count about 80-100 connections paired with httpd):
Code:
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 3521428 12429/mysqld /tmp/mysql.sock
[Code].....
This is indeed a mysql server issue as far as I managed to debug it but until a workaround/fix is found I need to have my server responsive and the first idea that comes to my mind is to somehow kill those stray connections. as described in the mysql topic mentioend above, killing from mysql will not work. I need to kill them from outside mysql. I have setup a crontab script to kill and restart the mysql server when it cannot connect and it runs every 5 min. however this only lead to mysql being down sooner rather than later because in many cases just kill -9 and then service start mysql does not do the job (it's either part of the same issue of mysql or another issue). basically I need to manually kill mysqld instances a bunch of times until it's ok, OR, if that doesn't work, stop everything that is using mysql, wait a few minutes, and then start mysql. so I ditched that script and now I am manually restarting mysql server every ~ 24 hours.
so basically it's a pain. if I were to kill the stray connections however, I will not have to bother every day with restarting mysql.
Ubuntu Servers :: Active Directory Domain Integration - Allow Domain Users To Authenticate Server And Access File Shares Using Samba
May 13, 2010The company I work for, as usual, is Microsoft-centric. I'm attempting to integrate my Ubuntu server into the domain to allow domain users to authenticate to the server and access file shares using Samba. Here's my current configuration:
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Red Hat :: Join A System On Active Directory Domain?
Mar 4, 2010i have installed RHEL5 on my system.i want to join my system on my organisation s active directory domain.how can i do it?suppose domain name is "abc-xyz"
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Jun 22, 2010I am testing CentOS 5.4 on a virtual machine before deploying to a server.I am trying to get authentication through our Active Directory server, without actually joining the machine to the domain.I tried multiple tutorials, including this one: URL...Basically I enabled authentication through kerberos and modified my ldap.conf file.
View 1 Replies View RelatedCentOS 5 Networking :: Intel 3945 Everything Active However Wireless Just Would Not Connect?
Mar 12, 2009working to sort out the damn wireless for too long. Mine in cent05 5.2 . network manager is on and I can see the icon on tray. It list all the wireless connections too, but just won't connect. WPA encry is disabled. further details below:
# lspci | grep Wireless 0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
# ethtool -i eth1
driver: ipw3945
version: 1.2.1dm
firmware-version: 14.2 1:0 ()
bus-info: 0000:0c:00.0
[Code]...
Ubuntu Servers :: Adding Server To Microsoft Active Directory Domain?
Mar 11, 2010When i try to join my Ubuntu server to Microsoft Active Directory domain, i get the error message below.
Kinit failed: Clock skew too great Failed to join domain: Time difference at domain controller I know the reason is because of the time difference between my domain controller and the Ubuntu server. But what i want to know is that possible to join a domain without time synchronisation? Because my domain controller is working for another time zone, for another Country, so i can not synchronise it with my Ubuntu server.
General :: How To Prepare Suse 11 Server To Join Active Directory Domain?
Jun 29, 2011I need to bring my Suse 11 server into active directory domain using samba and winbind. Please let me know the procedure how to do this.
View 3 Replies View RelatedCentOS 5 Networking :: Link Domain To VPS?
Nov 15, 2009So I recently purchased a VPS and had CentOS strongly recommended by a friend for my servers OS. I have a server, and one IP.
My /etc/resolv.conf reads...
nameserver 203.98.68.110
nameserver 203.98.68.210
CentOS 5 Networking :: How To Connect To A Windows Domain
Jul 20, 2009way to connect my CentOS server to my Windows domain.
View 2 Replies View RelatedCentOS 5 :: Epoll - Sockets And Threads ?
May 20, 2009There is a transient bug in my code which I just can't catch.
The basic idea is this. I have a multithreaded server and two thread pools, the IO pool and Worker pool. The main server thread listens to incoming connections. When it gets one, it dispatches a thread from the IO pool to read the socket. An IO thread reads the socket. If there is data, it invokes a thread from the Worker pool. This thread then finishes off the processing including closing the socket. The code follows.
Before I show the code, let me tell you what's happening when I am testing it. I have a client program which has about 30 threads, each opening a separate socket connection with the server. Each sends a request which the server responds to. Sometimes I have all the threads finish in a zip. Sometimes both the client and the server hangs. And yet at other times, the client gets a connection refused message.
Now the code. I have omitted some of the nitty-gritties, including possibly variable declarations. I'll post them if it's required.
CentOS 5 Networking :: VMware ESXi - E1000 Network Adapter Is Not Active And Not Pick Up An IP Address?
Feb 28, 2011Installed CentOS 5.5 on VMware ESXi server running vsphere 4.1. Installed fine and picked the E1000 network adapter. But can't get the adapter to become active and pick up an IP address. Has anyone done this before? I can't get it to work. When i was testing CentOS out i used VirtualBox and worked fine using bridged networking but just can't seem to get this network card working.I've put some pictures of the config i've got.http:[url]....
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Mar 9, 2009I want to join my centos 5 to my windows 2000 Active Directory domain and can not figure it out.
View 1 Replies View RelatedCentOS 5 Networking :: Wget To Domain Hosted On Same Server?
Sep 23, 2009I'm debugging some kind of a SOAP problem. I can use wget for any domain I want, besides domains that are hosted on the server itself.
What could it be? Centos firewall & selinux are turned off.
(domains / ips removed from code)
[root@http1 ~]# wget http://www.google.com
--12:09:53-- http://www.google.com/
Resolving www.google.com... 74.125.93.103, 74.125.93.104, 74.125.93.105, ...
Connecting to www.google.com|74.125.93.103|:80... connected.
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CentOS 5 Networking :: DHCP: Option Domain-search (119) Not Supported?
Oct 14, 2009I have an issue with the DHCP clients in a lab environment I am building. The lab is in a dns subdomain but the clients should be able to resolve any machine in the lab subdomain or the parent by using just the hostname. According to everything I have read, the client resolver should do this automagically, trying first the naked hostname, then the FQDN, then walking up the tree of parent domains. But it doesn't.
So I thought I'd just have the dhcp server set the domain search list to include both the local and parent domain. But adding "option domain-search" to dhcpd.conf causes dhcpd to fail on start up. Does the current version of dhcpd in CentOS 5.3 really not support this option?
CentOS 5 Networking :: Binding Domain Names To A Folder Below The Web Root?
Sep 1, 2010I have a centOS 5 server running apache 2 with it's web root at /var/www/html. By setting up a dns entry to point to the computer's IP, I was able to go to testing.myservername.com and reach the contents of that directory.My question is, how can I go about mapping multiple future domain names to folders that are under this webroot?For example how would i bind www.temporarydomain.com to the /var/www/html/temporarydomain/ folder and also be able to map www.anotherdomain.com to /var/www/html/anotherdomain/?
View 1 Replies View RelatedCentOS 5 Networking :: Internet Connection Sharing Domain Name Resolution Not Working
Jan 4, 2011I am setting up a Beowulf Cluster using CentOS 5.5. I have the head node with two NIC devices eth0 and eth1. eth0 is the one that is connected to the WAN while eth1 provides the internal LAN connection. I am trying to configure internet connection sharing with the slave nodes on the network so that I can update/install software as needed via ssh sessions using yum. I have set up the master node with the requisite changes to iptables to enable IPv4 forwarding. From my slave nodes I can ping ip address from the terminal, but my domain name resolution is not working. i.e. if I ping [URL] it can not resolve, but if I ping 74.125.224.50 (one of google's IP's) I can communicate with the machine without a problem. I also ran the configuration tool provided in the README section of the forum on the slave node and the master node. The links are:
[URL]
CentOS 5 Networking :: Filter Access Server Through The Net Only To Authenticated Users From Domain Controller (Win2k)?
Jul 17, 2009Filter access server through the net only to authenticated users from domain controller (Win2k). Server (Centos)(Firewall with 2 nic), which makes access to the net, with only 196MB RAM (PIII500Mhz), so I do not want a solution based on proxy or what resources it uses large I want a solution with a script that runs at login on windows this check series HDD and to communicate with Linux server that's open accessor another simple solutionNow just use only MAC filtering on
View 1 Replies View RelatedFedora Networking :: Can Access Unix Machine From Another Unix Machine?
Feb 23, 2009i have been using samba to gain access into windows computer through my pc which has fedora 8 ..can i access the unix machine from another unix machine? is yes then what is the procedures ?
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Jan 24, 2011What's the total no. that the OS can create? Does this differ from 32-bit?
View 1 Replies View RelatedCentOS 5 Networking :: Bonding With 2.6.18-194.11.4.el5PAE - "bond Bond0 Has No Active Aggregator"
Sep 30, 2010I 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:
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Networking :: How To Send A File Using Sockets ?
Jun 25, 2010Hi ,
I created a socket.port no 21 meaning ftp client.
I am sending some stings and receviing some data from server.Fine.
But I want to send a file some x.c to host using socket.
Please can someone help me whether we can do it or not.
If we can how can we send a file.I was only able to send buffer and data but not a file.Please if possible can you help me with example.
Regards,
shaiva
Networking :: Cannot Open Sockets In Computer
Sep 14, 2010The problem started when I noticed I couldn't upload to people using a torrent downloading program, the program listened on port X and when I sniffed on the same port I saw that syn's are forwarded correctly from my nat to that port but the program doesn't relate to those packets. Then I listened with NC, and even on another port nothing is being answered to those syns packets.
View 3 Replies View RelatedNetworking :: Bad: Two Sockets Of Different Ports In A Single Program?
Mar 4, 2011I am trying to make a file proxy server...that is any request of file a client makes goes to the proxy server...it checks it in cache if not there then asks main server for the file. to act as a server for client and as client for server...how to do it in a single program. I tried with 2sockets with different ports one for client-proxy server and one for proxyserver-main server.But it does not workAm i doing something wrong or is there any other method
View 2 Replies View RelatedNetworking :: How To Receive ICMP Messages In UDP Sockets
Jul 9, 2009I have a C program which does.
1. Creates a UDP socket
2. Send the UDP Request packet to the TFTP server.
3. If the TFTP server is not listening in the 69 port, the remote machine send an ICMP ("Port Unreachable") message.
Is there a way to receive a notification from the Linux kernel on receipt of an ICMP packet to the created UDP socket.
Networking :: HTTPD Not Starting - No Listening Sockets Available
Sep 29, 2010root@HOST [~]# /etc/init.d/httpd start
Starting httpd: no listening sockets available, shutting down
Unable to open log [FAILED]
root@HOST [~]# /etc/init.d/httpd restart
Stopping httpd: [FAILED]
Starting httpd: no listening sockets available, shutting down
Unable to open logs [FAILED]
root@HOST [~]# tail -n 10 /var/log/messages
Sep 29 17:59:30 localhost avahi-daemon[2870]: New relevant interface wlan0.IPv4 for mDNS.
Sep 29 17:59:30 localhost avahi-daemon[2870]: Joining mDNS multicast group on interface wlan0.IPv4 with address 196.219.240.236.
Sep 29 17:59:30 localhost avahi-daemon[2870]: Registering new address record for 196.219.240.236 on wlan0.
Sep 29 17:59:31 localhost avahi-daemon[2870]: New relevant interface wlan0.IPv6 for mDNS.
Sep 29 17:59:31 localhost avahi-daemon[2870]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::223:cdff:fecb:9c5e.
Sep 29 17:59:31 localhost avahi-daemon[2870]: Registering new address record for fe80::223:cdff:fecb:9c5e on wlan0.
Sep 29 17:59:31 localhost NetworkManager: <info> (wlan0): device state change: 7 -> 8
Sep 29 17:59:31 localhost NetworkManager: <info> Policy set 'Sunsoft1' (wlan0) as default for routing and DNS.
Sep 29 17:59:31 localhost NetworkManager: <info> Activation (wlan0) successful, device activated.
Sep 29 17:59:31 localhost NetworkManager: <info> Activation (wlan0) Stage 5 of 5 (IP Configure Commit) complete.
What is the problem I have a local server
CentOS Linux
Networking :: Sending Frames Of Size 1518 Using Raw Sockets
Aug 19, 2010I wrote an application that receives packets on one interface and sends them to another interface after it added a vlan header. Both the sending and the receiving is done using raw sockets. Everything seems to work fine until I get TCP packets that are of size 1514 (MTU). Once I add a vlan header to the packet, its size becomes 1518 and when I try to send it I get the returned value -1 and errno=90 (message too long). I tried to change the MTU of the NIC to a value that is bigger than 1500 but that fails. If I create a bridge using brctl and vconfig between the NICs I can see that my NIC does sends packets of size 1518. What do I need to in order to make my NIC to send packets of size 1518?
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