How to change MTA on Centos5.6 – RHEL based server

Leave a Comment / SysAdmin /

Here you can see, how to change MTA qmail to any other you can set as simple sendmail or postfix, exim or qmail. `[root@JobNix~]#ll /etc/alternatives/mta` lrwxrwxrwx 1 root root 23 Aug 31 03:39 /etc/alternatives/mta -> /var/qmail/bin/sendmail [root@JobNix ~]# alternatives –config mta There are 4 programs which provide ‘mta’. Selection Command ———————————————– *+ 1 /var/qmail/bin/sendmail 2 […]

How to change MTA on Centos5.6 – RHEL based server Read More »

AWS – How to setup an IAM user to access only one s3 Bucket

Leave a Comment / SysAdmin /

Hi, This will explain how you can create an IAM user in AWS, so that you can grant access to only one S3 bucket. – Create an S3 bucket in AWS account. [![](https://res.cloudinary.com/jobnix/image/upload/v1415999956/jobin_2012_02_24_01_vche3d.jpg “AWS_create_s3_bucket”)](https://res.cloudinary.com/jobnix/image/upload/v1415999956/jobin_2012_02_24_01_vche3d.jpg) –  Switch to AWS IAM tab – Click Group >> Create Group [![](https://res.cloudinary.com/jobnix/image/upload/v1415999956/jobin_2012_02_24_02_azzusv.jpg “AWS_create_iam_group”)](https://res.cloudinary.com/jobnix/image/upload/v1415999956/jobin_2012_02_24_02_azzusv.jpg) – Enter a Group Name, Click Continue

AWS – How to setup an IAM user to access only one s3 Bucket Read More »

MySQL Optimization

Leave a Comment / SysAdmin /

Find max connection using the formula:-  memory = keybuffer + (readbuffer + sort buffer ) max connections Open /etc/my.cnf file in your favorite editor (eg: vi, pico etc) max_connections=400 max_user_connections=30 key_buffer=256M (128MB for every 1GB of RAM) myisam_sort_buffer_size=64M join_buffer_size=1M read_buffer_size=1M (1MB for every 1GB of RAM) sort_buffer_size=1M (1MB for every 1GB of RAM) table_cache=1500 thread_concurrency=2

MySQL Optimization Read More »

Apache Optimization

Leave a Comment / SysAdmin /

All the important configuration options are stored by Apache in a config file called httpd.conf that is located at /usr/local/apache/conf/httpd.conf. We will start by opening this file in your favorite text editor. For example: – vi /usr/local/apache/conf/httpd.conf **MaxClients** Total number of concurrent connections. Locate it in the configuration file. This should be set to a

Apache Optimization Read More »

Sample Page

Leave a Comment / SysAdmin /

This is an example page. It’s different from a blog post because it will stay in one place and will show up in your site navigation (in most themes). Most people start with an About page that introduces them to potential site visitors. It might say something like this: > Hi there! I’m a bike

Sample Page Read More »

Scroll to Top