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Showing posts from September 25, 2011

Mysql Scripts in Linux Command Line Terminal

In MySQL user always tries to connect with the server via command line interface such as remote login like 'ssh' then they troubled themselves in using graphical interface and get the required output quickly. So they need to automate that task. In this Blog I am going to suggest you a way to do this ... First of all we need to know that a MySQL service is kept in /etc/init.d/mysqld and we need to invoke that in order to use mysql server and client. To do this use following command in terminal : service /etc/init.d/mysqld start or service mysqld start When mysql server is started make a directory like /home/anduril/shubham_Script and after entering into that directory use this command in your terminal. vi connect_string.sh It will create a file with the name connect_string.sh you can give any name you want. Press 'i' to edit and enter the following text : mysqlshow -u root -proot mysqladmin version -u root -proot mysqladmin variables -u root -proot mysqladmin ping -u roo...
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Add user in Sudoer file

The command sudo provides other users to run a command as a root. To use sudo user must have their level of privilege in /etc/sudoer file. In some cases this file is set for read only and others can edit that file and add their user name in Sudoer for this case such as Fedora 12 users need to provide this syntax as a root on their terminal. Syntax for adding a user in Sudoer file is: echo "username ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers And to gain the writing privilege you can use the following code in your terminal : chmod 755 /etc/sudoers This code will be enough to give permissions to the user and his user group. If you are an ubuntu user you can easily add your user in this file like: vi /etc/sudoers And you will get a text file. Afterward you need to press 'i' for edit and edit by adding your username just below "root ALL=(ALL) ALL" "username ALL=(ALL) ALL"
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Allowing users to have ssh access

Allowing users to have ssh access Hi Readers, It is one of the tasks we need to complete in order to allow users to log-in into your server without compromising your security. We are going to accomplish the following tasks, 1.) Allow the users for given domain only 2.) Must allow access to a given domain 3.) Block access for a specific domain. These questions are asked in RedHat certification examination RHCE6 We are going to complete the above mention task using iptables To give proper example we are taking 192.168.20.0/255.255.255.0 as our domain and 192.168.21.0/255.255.255.0 as other domain. Assuming that your system is a fresh installation we can remove all rules previously applied. # iptables -F  The above mention command will flush all the previously applied rules. Insert a rule in your input chain by below mention command, # iptables -I INPUT -s <ip of your domain>/<subnet mask> -p <protocal tcp/udp> --dport <port> -...
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Hipchat and Icinga

Hipchat Notify 2.0 Hipchat notification with API 2.0 to be used with ICINGA/Nagios Table of Contents Table of Contents Author Audience Introduction Ruby Script Script used on server Service notification Host notification Change in command.conf for Icinga server Example notification Roadmap Author Shubhamkr619@gmail.com Audience System Engineers and operation engineers Introduction Change the default mail notification of Icinga server to hipchat notification using ruby code. This will allow a single place of management of all the notification and alerts across organization. Let that be service,host or business level alerts all can be managed and monitored using hipchat and hubot will give certain advantage over traditional alerting system. Proactive and reactive alerting Managed monitoring Single place of all the alerts Better communication and collaboration Integration with multiple tools in CI cycle Jenkins Chef ...
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