User contributions for Saurabh
From Notes_Wiki
- 05:38, 9 November 2012 diff hist +764 N Booting machine after removing hard-disks from software raid array Created page with "=Booting machine after removing hard-disk from software raid array= When we try to boot after removing one hard-disk in some cases the system may boot properly. In other case..."
- 05:38, 9 November 2012 diff hist +72 m Software raid configuration
- 05:36, 9 November 2012 diff hist +5,046 N Basic mdadm configuration and commands Created page with "=Basic mdadm configuration and commands= ==Seeing information on running array== To see information on currently configured and running raid arrays and also status of differ..."
- 05:35, 9 November 2012 diff hist +74 N Software raid configuration Created page with "=Software raid configuration= *Basic mdadm configuration and commands"
- 05:34, 9 November 2012 diff hist +32 m Main Page
- 05:33, 9 November 2012 diff hist +436 N Tidy-rpm-cache Created page with "=tidy-rpm-cache.py (previous rm_obsolete_rpms.py)= We can download latest version of tidy-rpm from internet and then use it to delete obsolete packages from yum-cahce. This s..."
- 05:33, 9 November 2012 diff hist +47 N Package management tools Created page with "=Package management tools= *tidy-rpm-cache"
- 05:32, 9 November 2012 diff hist +60 N System administration tools Created page with "=System administration tools= *Package management tools"
- 05:32, 9 November 2012 diff hist +52 m Main Page
- 04:59, 9 November 2012 diff hist +415 N Configuring cisco switch as SNMP server Created page with "=Configuring cisco switch as SNMP server= Steps: #Go to '<tt>config t</tt>' and use #:<pre> #:: snmp-server enable informs #:: snmp-server community public ro #:</pre> Note..."
- 04:58, 9 November 2012 diff hist +45 m Switch configuration notes
- 04:58, 9 November 2012 diff hist +1,116 N Spanning tree configuration for Cisco switches Created page with "=Spanning-tree configuration for cisco switches= *Configure layer 3 switches as STP root *:Go to global configuration mode and use '<tt>spanning-tree vlan <vlan_id> ro..."
- 04:57, 9 November 2012 diff hist +52 m Switch configuration notes
- 04:57, 9 November 2012 diff hist +2,187 N Configuring manageable switch port to behave as unmanageable switch port Created page with "=Configuring manageable switch port to behave as unmanageable switch port= Sometimes manageable switches when connected to a port may not work because of security settings do..."
- 04:56, 9 November 2012 diff hist +78 m Switch configuration notes
- 04:56, 9 November 2012 diff hist +1,231 N Mirroring ports on Cisco switches Created page with "=Mirroring ports on cisco switches (SPAN) = ==Creating monitor session== To mirror ports (use SPAN) on Cisco 2950, 4503, etc. switches we can use '<tt>monitor session</tt>'..."
- 04:55, 9 November 2012 diff hist +39 m Switch configuration notes
- 04:54, 9 November 2012 diff hist +4,665 N Configuring basic Access Control List (ACL) on Cisco switches Created page with "=Configuring basic access control list (ACL) on Cisco switches= ==Limiting access to vty lines based on source IP with access list== To configure basic access control on sw..."
- 04:53, 9 November 2012 diff hist +67 m Switch configuration notes
- 04:52, 9 November 2012 diff hist +3 m Shifting Linksys switch to management VLAN 2
- 04:52, 9 November 2012 diff hist +1,659 N Shifting Linksys switch to management VLAN 2 Created page with "=Shifting linksys switch to management vlan 2= #Configure up-link port as trunk with native vlan 2. That is for Cisco switches use #:<pre> #:switchport mode trunk #:switchpo..."
- 04:52, 9 November 2012 diff hist +50 m Switch configuration notes
- 04:51, 9 November 2012 diff hist +970 N Enabling SSH and disabling telnet to Cisco switch Created page with "=Enabling SSH and disabling telnet to Cisco switch= First one should upgrade to latest crypto IOS available. Crypto IOS files generally have letter 'k' in their names. Then w..."
- 04:51, 9 November 2012 diff hist +55 m Switch configuration notes
- 04:50, 9 November 2012 diff hist +2,988 N Simple Cisco switch commands, tips and tricks Created page with "=Simple Cisco switch commands, tips and tricks= ==To see all ip addresses of switch== To see all ip addresses of switch use command `<tt>show ip aliases</tt>'. This can be v..."
- 04:50, 9 November 2012 diff hist +51 m Switch configuration notes
- 04:49, 9 November 2012 diff hist +3,157 N Configuring storm control on Cisco switch Created page with "=Configuring storm control on cisco switch= ==Configuring storm control on 2950+ switch== For 2950+ switch we can also specify values in percentage rather than packets per s..."
- 04:49, 9 November 2012 diff hist +47 m Switch configuration notes
- 04:48, 9 November 2012 diff hist +1,791 N Configuring privilege levels on Cisco switch Created page with "=Configuring privilege levels on Cisco switch= We can configure different command access based on priviledge level of user logged in. Hence, the commands available would depe..."
- 04:48, 9 November 2012 diff hist +50 m Switch configuration notes
- 04:46, 9 November 2012 diff hist +2,353 N Configuring etherchannel on Cisco switches Created page with "=Configuring etherchannel on Cisco switches= ==Configuring etherchannel on 2950+ switches with latest IOS== To configure etherchannel on 2950+ switches with latest IOS: #Go..."
- 04:46, 9 November 2012 diff hist +48 m Switch configuration notes
- 04:44, 9 November 2012 diff hist +1,457 N Tracing physical location of IP address in network using switches Created page with "=Tracing physical location of IP address in network using switches= To trace where is particular IP switch port by switch port we can make use of two different types of table..."
- 04:42, 9 November 2012 diff hist +71 m Switch configuration notes
- 04:41, 9 November 2012 diff hist +1,550 N Loading IOS on Cisco switch which has no existing IOS Created page with "=Loading IOS on Cisco switch which has no existing IOS= It is possible while upgrading IOS on switch that we upload some corrupted / wrong version of image. In that case swit..."
- 04:40, 9 November 2012 diff hist +59 m Switch configuration notes
- 04:40, 9 November 2012 diff hist +1,014 N Upgrading Cisco switch IOS using tftp server Created page with "=Upgrading switch IOS from telnet and tftp server= Normally if the previous image of switch IOS has web interface (flash:/html directory present) then we can use Cisco Networ..."
- 04:38, 9 November 2012 diff hist +50 m Switch configuration notes
- 04:36, 9 November 2012 diff hist +1,007 N Reset enable password on Cisco switch Created page with "=Reset enable password on Cisco switch= If we do not know enable / console / telnet etc. password of switch and have physical access to switch then, we can reset the password..."
- 04:36, 9 November 2012 diff hist +72 N Switch configuration notes Created page with "=Switch configuration notes= *Reset enable password on Cisco switch"
- 04:35, 9 November 2012 diff hist +71 m Main Page
- 10:02, 8 November 2012 diff hist +960 N Backing up and restoring MySQL database Created page with "=Backing up and restoring MySQL database= ==MySQL database backup== To backup MySQL database one can use '<tt>mysqldump</tt>' program. Syntax for mysqldump is: <pre> mysqldu..."
- 09:56, 8 November 2012 diff hist +45 m Mariadb configuration
- 09:55, 8 November 2012 diff hist +969 N Restoring mediawiki from database backup Created page with "=Restoring mediawiki from database backup= Most of the times during restore the latest version of mediawiki available would be never then version of mediawiki from which back..."
- 09:54, 8 November 2012 diff hist +626 N Installing PdfExport extension for mediawiki Created page with "=Installing PdfExport extension for mediawiki= *First install `<tt>htmldoc</tt>' package using yum. *You can get the source code for extension from http://www.mediawiki.org/..."
- 09:53, 8 November 2012 diff hist +2,397 N Enabling and using file uploads with mediawiki Created page with "=Enabling and using file uploads with mediawiki= ==Configuring mediawiki== You can add following lines to LocalSettings.php file to enable uploads quicky <pre> #Setting local..."
- 09:53, 8 November 2012 diff hist +490 N Changing logo displayed by mediawiki Created page with "=Changing logo displayed by mediawiki= To change logo displayed by mediawiki, change value of '$wgLogo' variable in file 'LocalSettings.php'. Sample value is listed below. <p..."
- 09:52, 8 November 2012 diff hist +1,691 N Blocking registration on mediawiki Created page with "=Blocking registration on mediawiki= There are various user groups in MediaWiki. One of the groups is '*' which includes all users (including anonymous users). Registered use..."
- 09:52, 8 November 2012 diff hist +2,430 N Configuring new mediawiki Created page with "=Configuring new mediawiki= #Download latest mediawiki source code from Internet #Extract mediawiki source in some folder (preferably <tt>/usr/share/mediawiki-<name></tt>) #O..."
- 09:51, 8 November 2012 diff hist +29 m Mediawiki configuration
- 09:50, 8 November 2012 diff hist +372 N Mediawiki configuration Created page with "=mediawiki configuration= *Configuring new mediawiki *Blocking registration on mediawiki *Changing logo displayed by mediawiki *[[Enabling and using file uploads]..."
- 09:49, 8 November 2012 diff hist +29 m Main Page
- 09:49, 8 November 2012 diff hist +980 N Removing banned IP from denyhosts Created page with "=Removing banned IP from denyhosts= To remove banned IP from denyhosts follow these steps: Check whether IP is present in "/etc/hosts.deny" or not. If IP is not present in t..."
- 09:48, 8 November 2012 diff hist +1,297 N Configuring new denyhosts server from source Created page with "=Configuring new denyhosts server from source= # Download latest source code for denyhosts from Internet. # Extract file using something like '<tt>tar xzf DenyHosts-2.6.tar.g..."
- 09:48, 8 November 2012 diff hist +12 m Denyhosts configuration
- 09:48, 8 November 2012 diff hist +103 N Denyhosts configuration Created page with "=Denyhosts configuration= *Configuring new denyhosts server *Removing banned IP from denyhosts"
- 09:47, 8 November 2012 diff hist +29 m Main Page
- 09:46, 8 November 2012 diff hist +1,017 N Troubleshooting zimbra issues Created page with "=Troubleshooting zimbra issues= ==ldap fails to start== Zimbra ldap may fail to start if domain to IP address mapping is incorrect. Ensure that if primary domain in example...."
- 09:46, 8 November 2012 diff hist +4,442 N Basic zimbra configuration Created page with "=Zimbra= ==Installation== #Zimbra setup can be downloaded from http://www.zimbra.com/downloads/os-downloads.html #Verify md5sum and then extract download archive #<tt>servic..."
- 09:46, 8 November 2012 diff hist +97 N Zimbra server configuration Created page with "=Zimbra server configuration= *Basic zimbra configuration *Troubleshooting zimbra issues"
- 09:45, 8 November 2012 diff hist +33 m Main Page
- 09:44, 8 November 2012 diff hist +2,997 N SNMP server configuration for Linux hosts Created page with "=SNMP server configuration for Linux hosts= Steps: #Ensure that packages '<tt>net-snmp</tt>' and '<tt>net-snmp-utils</tt>' are installed. #Start snmpd service and enable it o..."
- 09:44, 8 November 2012 diff hist +75 N SNMP server configuration Created page with "=SNMP server configuration= *SNMP server configuration for Linux hosts"
- 09:44, 8 November 2012 diff hist +31 m Main Page
- 09:43, 8 November 2012 diff hist +801 N Cache peer configuration for squid Created page with "=Cache peer configuration for squid= ==Configuring cache peer for some specific domains== We can configure parent proxy for few specific domains. This can be useful if paren..."
- 09:42, 8 November 2012 diff hist +732 N Squid ACL notes Created page with "=Squid ACL notes= ==Blocking domains== We can use following lines to block domains youtube.com, youtube.co.uk, etc. from 10.2.48.0/24 IP range: <pre> acl youtube_facebook_s..."
- 09:41, 8 November 2012 diff hist +1,142 N Using encrypted channels to communicate with squid proxy server Created page with "=Using encrypted channels to communicate with squid proxy server= We can use <pre> https_port 8081 cert=/etc/squid/squid.pem </pre> in '<tt>squid.conf</tt>' to allow clients ..."
- 09:41, 8 November 2012 diff hist +1,602 N Configuring proxy authentication for squid Created page with "=Configuring proxy authentication for squid= ==Enabling proxy authentication using custom plugin== We can configure a program for basic authentication using lines like: <pre..."
- 09:40, 8 November 2012 diff hist +3,332 N Configuring squid cache Created page with "=Configuring squid cache= ==Configurable parameters related to squid cache== ===Configuring structure of squid_cache directory and amount of data stored=== We can configure..."
- 09:40, 8 November 2012 diff hist +1,643 N Configuring squid cache manager Created page with "=Configuring squid cache manager= ==Configure web interface of squid cache manager== Squid comes with cache manager CGI application which can be used to see cache statistics..."
- 09:39, 8 November 2012 diff hist +279 N Squid proxy server configuration Created page with "=squid proxy server configuration= *Configuring squid cache manager *Configuring squid cache *Configuring proxy authentication for squid *[[Using encrypted channe..."
- 09:39, 8 November 2012 diff hist +38 m Main Page
- 10:30, 7 November 2012 diff hist +153 N Generating new ssh host keys for openSSH server Created page with "=Generating new SSH host keys for openSSH server= To generate new SSH host keys use command: <pre> ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key </pre>"
- 10:30, 7 November 2012 diff hist +1,198 N Improving openSSH server performance Created page with "=Improving SSH server performance= There are various ways of improving SSH server performance. For example on local LAN disabling all types of DNS checks both on server and o..."
- 10:29, 7 November 2012 diff hist +675 N Disabling reverse DNS lookup for openSSH Created page with "=Disabling reverse DNS lookup for openSSH= Sometimes SSH to servers takes considerable time. This can be due to delay problems with DNS servers. If we are on local LAN and th..."
- 10:29, 7 November 2012 diff hist +1,117 N Passphrase for ssh-keys Created page with "=Passphrase for ssh-keys= When our public key, private key etc. can be used to access some sensitive information that it makes sense to protect our keys with some passphrase...."
- 10:28, 7 November 2012 diff hist +844 N Sharing multiple ssh connections Created page with "=Sharing multiple ssh connections= It is possible that once ssh connection is established with the machine, the same gets used for all additional ssh, scp, rsync etc. connect..."
- 10:28, 7 November 2012 diff hist +2,854 N Chrooting sftp users to home directory with openSSH Created page with "=Chrooting sftp users to home directory with openSSH= In shared hosting environment it might be desired that users can only do sftp and cannot execute shell commands. Also it..."
- 10:27, 7 November 2012 diff hist +577 N Configuring idle timeout for openSSH Created page with "=Configuring idle timeout for openSSH= We can configure idle timeout for ssh so that if there is no activity for given period, the user is automatically logged out. To config..."
- 10:27, 7 November 2012 diff hist +2 m OpenSSH server configuration
- 10:26, 7 November 2012 diff hist +336 N OpenSSH server configuration Created page with "=OpenSSH server configuration= *Configuring idle timeout for shell *Chrooting sftp users to home directory with openSSH *Sharing multiple ssh connections *[[Passp..."
- 10:25, 7 November 2012 diff hist +34 m Main Page
- 10:24, 7 November 2012 diff hist +904 N Configuring basic tftp server Created page with "=Configuring basic tftp server= To create a tftp server use: # <tt>yum install tftp tftp-server</tt> # Edit '<tt>/etc/xinetd.d/tftp</tt>', change disable to no # Start xinetd..."
- 10:24, 7 November 2012 diff hist +63 N Tftp server configuration Created page with "=tftp server configuration= *Configuring basic tftp server"
- 10:23, 7 November 2012 diff hist +31 m Main Page
- 10:22, 7 November 2012 diff hist +12,669 N Basic samba server configuration Created page with "=Basic samba server configuration= ==On Windows XP== # Either disable windows firewall or Create exception for file and printer sharing in windows firewall. # Disable all vi..."
- 10:22, 7 November 2012 diff hist +67 N Samba server configuration Created page with "=Samba server configuration= *Basic samba server configuration"
- 10:22, 7 November 2012 diff hist +32 m Main Page
- 10:21, 7 November 2012 diff hist +4,649 N Configuring basic pxeboot server Created page with "=Configuring basic pxeboot server= To configure a basic pxeboot server we can use following steps: #Install packages '<tt>dhcp</tt>', '<tt>tftp-server</tt>' and '<tt>syslinux..."
- 10:20, 7 November 2012 diff hist +69 N Pxeboot server configuration Created page with "=pxeboot server configuration= *Configuring basic pxeboot server"
- 10:20, 7 November 2012 diff hist +34 m Main Page
- 10:18, 7 November 2012 diff hist +1,372 N Configuring LDAP based authentication for apache Created page with "=Configuring LDAP based authentication for apache= To configure LDAP based authentication for apache use: #Install mod_authz_ldap package using '<tt>yum -y install mod_authz_..."
- 10:17, 7 November 2012 diff hist +669 N Host resolution using openLDAP Created page with "=Host resolution using ldap= To use ldap for host resolution use following steps: #Verify that '<tt>nis</tt>' schema is included in slapd configuratiodn #Create an ou for hos..."
- 10:17, 7 November 2012 diff hist +6,507 N Configuring authentication with openLDAP server Created page with "=Configuring authentication with openLDAP server= ==LDAP server configuration== ===User accounts=== First user accounts or groups should be created on ldap server. A sample ..."
- 10:16, 7 November 2012 diff hist +2,750 N Configuring openLDAP replica server Created page with "=Configuring openLDAP replica server= ==Primary server configuration== ===Enable syncronization module=== To configure replica server on primay node add following global c..."
- 10:16, 7 November 2012 diff hist +624 N Database wide operations such as backup or restore for openLDAP Created page with "=Database wide operations such as backup or restore for openLDAP= ==Backing up ldap database== To backup ldap database use: <pre> slapcat -l <backup_file> -f /etc/openldap/s..."
- 10:15, 7 November 2012 diff hist +1,397 N Converting old slapd.conf file to cn=config format Created page with "=Converting old slapd.conf file to cn=config format= To convert slapd.conf file to new format start slapd once using '<tt>-F</tt>' option with an empty directory such as: <pr..."
- 10:15, 7 November 2012 diff hist +2,340 N OpenLDAP client configuration Created page with "=ldap client configuration= ==Configuring thunderbird to use LDAP address book== We can use following values to create LDAP address book in thunderbird that uses IIIT ldap s..."
- 10:14, 7 November 2012 diff hist +5,690 N Securing openLDAP SASL authentication Created page with "=Securing openLDAP SASL authentication= ==Managing password stored in DIT== To modify or set ldap passwords using slapd.conf (rootpw) or ldapmodify/ldapadd (userPassword) on..."
- 10:13, 7 November 2012 diff hist +7,435 N Configuring TLS or SSL security for openLDAP server Created page with "=Configuring TLS or SSL security for openLDAP server= ==Certificate generation== ''All certificate generation related steps can also be done using '<tt>easy-rsa</tt>' script..."