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• Create new partition on live production CentOS server

  - by Kimmel

  I have a production server that is running on CentOS. I'd like to create a partition on the server without having to reinstall everything. I have CLI and VNC access to the remote server. Is there anyway that I can create a partition safely? Here's my output from fdisk -l Disk /dev/sda: 85.9 GB, 85899345920 bytes 255 heads, 63 sectors/track, 10443 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00033d5e Device Boot Start End Blocks Id System /dev/sda1 * 1 10444 83885056 83 Linux Thanks.

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• how to best config for synflood setup in csf but web response still fast

  - by Binh Nguyen

  my server down random every day 4-5 time cause get high load very quick.. I have install csf and with some config server now stable.. load around 5. BUT the big isuse is : the real user very hard to access website specially from IE browser you can test at xaluan.com the flowing is config using in csf: SYNFLOOD = "1" SYNFLOOD_RATE = "100/s" SYNFLOOD_BURST = "10" CONNLIMIT = "80;30" PORTFLOOD = "80;tcp;70;5" CT_LIMIT = "29" # other config may same as default i playing around with this config for a week but still not work around.. If increase the rate SYNFLOOD_RATE = "140/s" or more.. the website response very fast.. be side have bad effect of server load increase so fast normal 20 and may be up to few hundred in peck time .. my need is response time fast but load still low.. please help thanks ps: server runing nginx frontend, apache, mysql, php ,, the home page has around 70 elements which will cached in browser in fist time access..

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• Failed to bring up eth1 in a dual ips solution in ubuntu

  - by lxyu

  I'm using ubuntu 12.04. I tried to assign two ips to two ethernet cards in my server. The content of /etc/network/interfaces is like this: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 114.80.156.a netmask 255.255.255.224 gateway 114.80.156.b auto eth1 iface eth1 inet static address 114.80.156.c netmask 255.255.255.240 gateway 114.80.156.d a b c d have different values, which means the two ips are in different vlans. But I can only bring up eth0 with this command: $ /etc/init.d/networking restart RTNETLINK answers: File exists Failed to bring up eth1. ...done. I have checked the question here which shows the same problem like the one I encountered: Can only bring up one of two interfaces But it seems it's not really solved. And in my situation, I need the 2 ips to use 2 different gateways. So how to fix this problem? Edit1, changed the example config ip from 192.168.0.0/16 subnet to another 'real' subnet. Edit2, the purpose of doing this is fairly simple. Because the ip range I previous in don't have more room for new servers, and I have to move to another ip range. So I want to make the public servers bind to 2 ips for the transition period. I only have really limited knowledge about routing and subnet. @BillThor @rackandboneman, would you please give me some keywords or links on how to setup route for 2 ips? and @Mike Pennington, how do you know I speak chinese?

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• How to get more NFS packet details from Wireshark?

  - by Joe Swanson

  How can I get Wireshark to give me details about NFS packets at this level of granularity? (as exemplified here here) Specifically, I am interesting in looking at the the "Stable" option toward the bottom. When I analyze captured packets (whether by capturing directly via Wireshark, importing from a tshark dump, or importing from a tcpdump dump), I do not see a "Network File System" section in the packet details. I only get general TCP information. It recognizes that a packet is destined for a NFS port, but I am not able to see these details. Any ideas?

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• ShareWebDb_log.ldf is 97GB - How to reduce?

  - by pierre

  We run an SBS 2008 server with WSS. On the drive I have set aside for WSS, I'm fast running out of space due to the ShareWebDb_log.ldf file: I've tried doing to do what I've read online - change the recovery mode, backup and truncate - but I can't actually see how I do this via the SQL Server Management Studio tool. Can anyone shed any light? The database for this file does not show in the list, and I cannot expand Management SQL Server Logs (because it's too large?).

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• Proxy via Telnet

  - by Vreality2007

  I know telnet is insecure and all, but I'm stuck using it because ssh is blocked. I know how to setup ssh to bind the connection to a local port, is there a way to do this with telnet? For example, if I am using an ssh connection, I would bind it to port 999 like this: ssh -D 999 [email protected] -N -C I've tried using the -b command in linux, but to no avail. Is this even possible? This is what I've tried: telnet host.com -b 999 I'm sorry if the answer is obvious, but I've done a lot of research and testing and I can't seem to figure this out. NOTE: I plan on telling the admin if I can find a way to get this to work, this is based off of simple curiosity and not malicious intent. If I can't bind a telnet port, is there a way to tunnel an ssh connection through telnet?

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• Internet Sharing via router

  - by mak4pi

  Question: How to setup Internet Sharing among two computers (one Mac 10.5.6, one Ubuntu 9.10) via a router? Situation: The Mac is using AirPort (wireless interface) to connect to router as 192.168.1.101. The Ubuntu is using an ethernet cable to connect to router as 192.168.1.104. Visual: Mac )))))) Router ======= Ubuntu Any ideas are greatly appreciated. Thanks.

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• Some DHCP clients end up with wrong DNS server

  - by Nic Waller

  The scenario: DC running Windows Server 2008 R2 providing DNS + DHCP Cisco 1811 Router as the gateway 30 Windows XP DHCP clients on the LAN The problem: Some workstations are spontaneously switching to an incorrect DNS server. Specifically, ipconfig /all shows that they start using the gateway as a DNS server. This happens about 5-10 times a day to various computers, sometimes more than once per day. The workaround: Repairing the connection on the XP client always fixes the problem, and the correct DNS server address is obtained. We lost our main DNS/DHCP machine a week ago, and had to bring this one online as a spare. We've been having this issue since then. DHCP leases on the old and new servers are configured for "wired" (8 day) duration. There are definitely no other DHCP servers active on the LAN. So far there is no discernible pattern about which clients will show this problem, or when. When I ran DCDIAG /test:DNS it came back clean. Manual inspection of the DNS zone shows that all the records are appearing as expected, with no traces of the previous machine in there. Update Feb 27: Added screenshots. Here is a screenshot of the DHCP scope options on the 2008 R2 server. And here is a screenshot of ipconfig /all running on a healthy host. I don't have any ailing hosts at the moment, but will grab a screencap next time it happens. Update Feb 28: More screenshots. Here's a screenshot of DHCP and DNS traffic from a healthy client when repairing the local area connection. There's definitely only one server responding, but it does seem strange that the negotiation takes place twice. I'll try to get a similar capture from a sick machine this coming week. Update Mar 01: Caught a bad ipconfig. Here's a screenshot of ipconfig /all from a client that had this issue. It says the lease was issued this morning, but it doesn't even have an entry for the secondary DNS I set up yesterday. Both DNS servers were discovered properly when repairing the connection. Update Mar 01: It even got the sysadmin! This issue finally affected my personal workstation this morning. Unfortunately I had just rebooted and wasn't running a packet dump at the time. I set up a secondary server yesterday, and was logging all DNS traffic to it. My machine had not contacted the secondary DNS in over half an hour, so that says to me that it's just spontaneously reverting to the gateway without even failing over to secondary DNS first. Today I swapped the order of the DNS servers in DHCP, so the secondary is primary and vice versa. I will update again once I know how that goes.

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• How to handle certificates on a Apache reverse-proxy

  - by Helder

  Ok, so I was able to assemble an Apache for reverse proxy a bunch of internal sites. However, those sites use SSL. For the moment, and for testing purposes, I'm using self-signed certificates from the Apache box. I'm proxying a couple of OWA sites, and 2 https management consoles for a couple of appliances. I'm using name-based vhosts, and it's working fine (using Apache 2.2.14). However, I want to use the original, correct certificates. I have the original "3rd-party" certificates for all the sites, in .cer and .p7b format, and my question is: can I convert the certificates into something Apache will accept? Or will I need to generate new certificates, from the Apache box? Thanks!

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• What is a good ratio of consultant to full time employees?

  - by Andre

  We are looking at significantly increasing our development next year and we are wondering how many consultants we could support without alienating long term employees and remaining relatively efficient? Any thoughts? Thanks, Andre

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• sbs2008 -no incoming mail

  - by akram

  i have sbs2008 with exchange with it and sharepoint i want to configure incoming mail on it i tried but the mail keeps inside the exchange what might be the problem? can anyone give me step by step ,how to make the mail goes to the document library?

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• Drupal install and permissions

  - by Richard

  So I'm really stuck on this issue. An install process is complaining about write permission on settings.php and sites/default/files/. However, I've moved these files temporarily to write/read (chmod 777) and changed the owner/group to "apache" as shown below. -bash-4.1$ ls -hal total 28K drwxrwxrwx. 3 richard richard 4.0K Aug 23 15:03 . drwxr-xr-x. 4 richard richard 4.0K Aug 18 14:20 .. -rwxrwxrwx. 1 apache apache 9.3K Mar 23 16:34 default.settings.php drwxrwxrwx. 2 apache apache 4.0K Aug 23 15:03 files -rwxrwxrwx. 1 apache apache 0 Aug 23 15:03 settings.php However, the install is still complaining about write permissions. I followed steps one and two of the INSTALL.txt but no luck. Update: To further explore the situation, I created sites/default/richard.php with the following code: <?php error_reporting(E_ALL); ini_set('display_errors', '1'); mkdir('files'); print("<hr> User is "); passthru("whoami"); passthru("pwd"); ?> Run from the command line (under user "richard"), no problem. The folder is created everything is a go. Run from the web, I get the following: Warning: mkdir(): Permission denied in /var/www/html/sites/default/richard.php on line 9 User is apache /var/www/html/sites/default Update 2: Safe mode appears to be off... -bash-4.1$ cat /etc/php.ini | grep safe | grep mode | grep -v \; safe_mode = Off safe_mode_gid = Off safe_mode_include_dir = safe_mode_exec_dir = safe_mode_allowed_env_vars = PHP_ safe_mode_protected_env_vars = LD_LIBRARY_PATH sql.safe_mode = Off

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• What are some good hosted issue tracking systems for non-developers?

  - by Knox

  This question is similar to Good Open Source issue tracking systems for non-developers but in our case, we would prefer a hosted solution. The users are end-users, on the low end of computer literate, non developers. We have around 5 support people and 50 or so end users. We are interested in simple issue tracking, like a printer being down, as opposed to project or bug tracking. Email integration is desired.

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• How to point a Wordpress registered domain to github pages?

  - by Dave Castillo

  I'm trying to use a CNAME file in my git hub project to point to my wordpress registered domain name. E.g. example.com to point to myusername.github.com. I read Github-Setting up a custom domain and it tells me to point the domain to their servers: For a TLD like example.com, you should use an A record pointing to 204.232.175.78: But in the wordpress domain manager I only get the option to specify a nameserver like this: NS1.WORDPRESS.COM NS2.WORDPRESS.COM Inputting 204.232.175.78 in the wordpress manager give me an "invalid TLD." What am I doing wrong and how can I troubleshoot this issue?

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• Can't connect to Sql Server 2008 named instance

  - by eidylon

  I just installed Sql 2008 Express on a new server running Windows Server 2008. I know Sql is working properly, because I can connect to the db fine locally, on the server. I cannot connect to it from a client machine though, neither by IP address nor by machine name (iporname\instance). I know I have the correct IP address, because I am RDCing into the server to perform all this configuration and setup, and if I ping the server name, it is resolving to the correct IP address as well. On the server, I have set up an inbound firewall exception allowing all traffic on any port on any protocol to sqlservr.exe. In SSMS, in server > Properties > Connections Allow remote connections to this server is enabled. In Sql Server Configuration Manager, TCP/IP is enabled in both the Protocols for <instance> and the Client Protocols sections. I looked in the Windows logs, but don't see anything about connections being denied or dropped. As far as I can see, I have everything set right, but cannot connect from a client machine. The client CAN connect to other Sql 2008 Express servers okay, so I know the client configuration is correct. Any ideas where else I can look for info of what/where/how this connection is dropping, greatly apprecaited! The error being returned by the client is: **TITLE: Connect to Server** Cannot connect to [MY.IP.ADD.RSS]\[MYINSTNAME]. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)

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• standart packages list

  - by Valintinr

  Im learning puppet system and now need to do next task. So we have few servers with same OS (Altlinux p6,t6) - puppet-agents and have puppet-master. On agents installed some packages, eg. 200 packages on first, 300 on second .... But necessary only 180 installed. We know names of necessary packages but dont know names of other (unnecessary packages) So task: Have i can check or install (if not installed yet) necessary packages and delete other packages (we dont know names of other installed packages) Help please WBR Valentin

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• Certificate Template Missing from "Certificate Template to Issue"

  - by Adam Robinson

  I'm having a problem similar to that posted in this question: Missing Certificate template From certificate to issue The short version is that I've created a duplicate certificate template and I'm trying to add it to my domain CA so that I can issue certificates with it. However, when I go into the Certification Authority MMC and go to "Certificate Templates - New - Certificate Template To Issue", my template is missing (along with quite a number of other templates that are present in the domain). Unlike the previous question, however, my CA is running on Server 2008 R2 Enterprise. Our organization has a single DC and a single CA, so I'm not seeing where there could be propagation delay. Any ideas how to get my template to show so that I can issue certificates?

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• Windows 2003 Cluster: Failover Delay

  - by Ramon Marco Navarro

  I am testing the failover policies of our test failover cluster system. When I shutdown the node who is currently controlling the cluster (NODE1), it takes about 2 mins and 40 seconds before the next node on the preferred list (NODE2) takes control of the cluster. I tried changing the looksAlive and isAlive interval to 5000ms to all resources, but that didn't help. Looking at the Event Viewer of the remaining nodes, it shows that it was almost instantly detected that NODE1 was down. But it took another ~2:40 minutes for it to be removed from the live cluster list and for NODE2 to take over. Is there anyway of changing or shortening this "failover delay"? This is the setup of the cluster: (1) One ClusterDC connected to the public network (3) Three nodes running Win2003 with a quorum type of MNS Private network is connected to network hub ________________ _________________ (ClusterDC)=------=| |=------=(Node1)=------=| | |Public Network|=------=(Node2)=------=|Private Network| | (Switch) |=------=(Node3)=------=| (Hub) | ---------------- -----------------

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• Slow upload speeds with pfsense virtual appliance

  - by Justin Shin

  I have a pfSense virtual appliance set up in front of a Windows server. The pfSense appliance has been configured with two L2L IPSec VPN sites and not too much else. The appliance has two vNics which both exist on the same VLAN, but one is "WAN" and the other is "LAN." When I run speedtest.net on my Windows server when I have configured it to use a static WAN address and gateway, I get great speeds - maybe around 50 down, 15 up. However, when I configure it with a private IP address, I get similar download speeds but terrible upload speeds - around 2 or 3 Mbps consistently. I used Wireshark to see what gives but there didn't appear to be too much helpful information there, or I just could not find it. Besides the L2L VPNs, other configurations include: Automatic Outbound NAT Virtual P-ARP IP for the Windows Server WAN Firewall rule to allow * to * on RDP WAN Firewall rule to allow * to * (enabled this just for testing... didn't help!) No DHCP or any other services besides IPSec VPN No Errors LAN or WAN No collisions LAN or WAN I would be happy to post the full config file if it would help. I've been scratching my head at this one all day!

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• Postfix - How to alias some [email protected] to another user, but only for certain values of "host.com"

  - by Rory McCann

  I have a Postfix email setup. It's handle a few domains (i.e. I have them in my mynetworks in my main.cf). I have a normal unix account and use that to log in, and get my mail. My personal email account is of the form [email protected]. I have a new domain new.com, and I want to forward [email protected] to [email protected], however I don't want to forward [email protected]. Someone has suggested just forwarding all 'info' to 'user', and then using procmail on my user@ account to remove the [email protected] The server is Ubuntu.

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• Can I use my existing SSL certificates on a new server with Plesk?

  - by Wil

  We are migrating to a Virtual Private Server running on Ubuntu 8.04 LTS and with a Plesk configuration panel. We have some valid SSL certificates on the old server, which I would like to use on the new configuration. I have the CSR, private key, certificate and CA-certificate. I cannot find a way to change the CSR and private key in the Plesk configuration panel. Anyone know, if this is possible and how?

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• Lock down Wiki access to password only but remain open to a subnet via .htaccess

  - by Treffynnon

  Basically we have a Wiki that has some sensitive information stored in it - not the best I know but my predecessor set it up. I want to be able to request password access from any one who is not on the local network subnet. Those on the local subnet should be able to proceed without entering a password. The following .htaccess does not seem to work any more as it is letting non-local access without requiring the password: AuthName "Our Wiki" AuthType Basic AuthUserFile /path/to/passwd/file AuthGroupFile /dev/null Require valid-user Allow from 192.168 Satisfy Any order deny,allow And I cannot work out why. The WikkaWiki it is supposed to be protecting was recently upgraded, which clobbered the .htaccess file so I restored the above from memory/googling. Maybe I am missing an important directive? The full .htaccess is as follows: AuthName "Our Wiki" AuthType Basic AuthUserFile /path/to/passwd/file AuthGroupFile /dev/null Require valid-user Allow from 192.168 Satisfy Any SetEnvIfNoCase Referer ".*($LIST_OF_ADULT_WORDS).*" BadReferrer order deny,allow deny from env=BadReferrer <IfModule mod_rewrite.c> # turn on rewrite engine RewriteEngine on RewriteBase / # if request is a directory, make sure it ends with a slash RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^(.*/[^/]+)$ $1/ # if not rewritten before, AND requested file is wikka.php # turn request into a query for a default (unspecified) page RewriteCond %{QUERY_STRING} !wakka= RewriteCond %{REQUEST_FILENAME} wikka.php RewriteRule ^(.*)$ wikka.php?wakka= [QSA,L] # if not rewritten before, AND requested file is a page name # turn request into a query for that page name for wikka.php RewriteCond %{QUERY_STRING} !wakka= RewriteRule ^(.*)$ wikka.php?wakka=$1 [QSA,L] </IfModule>

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• Limiting bandwidth on internal interface on Linux gateway

  - by Jack Scott

  I am responsible for a Linux-based (it runs Debian) branch office router that takes a single high-speed Internet connection (eth2) and turns it into about 20 internal networks, each with a seperate subnet (192.168.1.0/24 to 192.168.20.0/24) and a seperate VLAN (eth0.101 to eth0.120). I am trying to restrict bandwidth on one of the internal subnets that is consistently chewing up more bandwidth than it should. What is the best way to do this? My first try at this was with wondershaper, which I heard about on SuperUser here. Unfortunately, this is useful for exactly the opposite situation that I have... it's useful on the client side, not on the Internet side. My second attempt was using the script found at http://www.topwebhosts.org/tools/traffic-control.php, which I modified so the active part is: tc qdisc add dev eth0.113 root handle 13: htb default 100 tc class add dev eth0.113 parent 13: classid 13:1 htb rate 3mbps tc class add dev eth0.113 parent 13: classid 13:2 htb rate 3mbps tc filter add dev eth0.113 protocol ip parent 13:0 prio 1 u32 match ip dst 192.168.13.0/24 flowid 13:1 tc filter add dev eth0.113 protocol ip parent 13:0 prio 1 u32 match ip src 192.168.13.0/24 flowid 13:2 What I want this to do is restrict the bandwidth on VLAN 113 (subnet 192.168.13.0/24) to 3mbit up and 3mbit down. Unfortunately, it seems to have no effect at all! I'm very inexperienced with the tc command, so any help getting this working would be appreciated.

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• maillog "No route to host" error

  - by Sherwood Hu

  I have a CentOS server. It has sendmail installed but not used for a mail server. I forwarded the root email to another email address. However, I keep getting errors in maillog: Dec 6 08:49:16 server1 sm-msp-queue[16191]: qB6601et005433: to=root, ctladdr=root (0/0), delay=08:49:15, xdelay=00:00:00, mailer=relay, pri=883224, relay=[127.0.0.1], dsn=4.0.0, stat=Deferred: [127.0.0.1]: No route to host Dec 6 08:49:16 server1 sendmail[16190]: qB39nDfQ014062: to=<[email protected]>, delay=3+05:00:02, xdelay=00:00:00, mailer=esmtp, pri=6965048, relay=subdomain.example.com., dsn=4.0.0, stat=Deferred: subdomain.example.com.: No route to host Dec 6 08:49:16 server1 sendmail[16190]: qB39nDfR014062: to=<[email protected]>, delay=3+05:00:02, xdelay=00:00:00, mailer=esmtp, pri=7004959, relay=subdomain.example.com., dsn=4.0.0, stat=Deferred: subdomain.example.com.: No route to host In the forwarded email address, I received notification "it can't deliver email to [email protected]. subdoamin.example.com does have a MX record, and I do not want to add one. Is there any configuration that I can change to prevent this error? I want all emails to the root to be forwarded to the forward address.

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• Nagios Statistics for Notifications/Alerts

  - by bread555

  We have had our Nagios installation up for a year, and we are now required to give some statistics on how much it has worked and what it has done in the environment. As such, I was wondering if anyone knows if Nagios also holds data records on how many alerts and notifications it sends out? I am not necessarily looking for reports on what it alerted on, but just some raw statistics for a powerpoint. TL:DR Can I extract how many notifications and alerts Nagios has produced in it's existence or between certain dates?

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