January 2015
« Dec   Feb »

How do I monitor uptime of my bulk smtp server externally


Here is my challenge, I have configured a highly reputed email server using Postfix MTA for sending bulk emails. So it’s a crucial for us to monitor the uptime of this service. So I decided to use nagios system to verify the SMTP authentication in 3 mts interval along with 2 failure checks and can [...]

How do I enable huge TLB on MySQL server


To get maximum hardware acceleration via reducing Tranaction Lockside Buffer (TLB) ie Applications that perform a lot of memory accesses may obtain performance improvements by using large pages due to reduced Translation Lookaside Buffer (TLB) misses.

Here is the quick guide to setup this one for a single core 3.7G RAM AWS instance for [...]

How do I disable RC4 cipher in Apache/ disable RC4 cipher in Amazon load balencer


One of the site security scan report shows me that our webserver has vulnerabilities as it is supporting RC4 cipher in SSL/TLS encryption. So I need to disable it. Google shows me few links how to do it and i’d done it one webservers easily. But still I’m getting same report. I’m running my projects [...]

s3cmd Error : The difference between the request time and the current time is too large


While I’m setting up the s3cmd CLI tool and try to list the remote bucket, I got the following error,

[root@streamhost yum.repos.d]# s3cmd ls ERROR: S3 error: 403 (RequestTimeTooSkewed): The difference between the request time and the current time is too large.

Reason : The reason for this problem is that Amazon S3 allows only [...]

How do I re-new code signing Certificate, extracting private key from .pfx


I had a requirement to re-new code signing certificate for a project which is using a MS window client application. Certificate renewal procedure was simple since GOdaddy support previous used CSR for renewing the SSL. So I could able to complete process and got the certificate downloaded.

While I’m opening the Cert zip file, I [...]