- 1 Hyper-V 2012 R2: Pros and Cons of Generation 1 vs. Generation 2 VMs
- 2 Harnessing the Power of Hyper-V Network Virtual Switches
- 3 Working with SSH and Secure FTP Servers in Windows
- 4 Discover Windows 8's Hidden Server Features
- 5 Server Virtualization Customer Reviews: VMware, Hyper-V, XenServer and More
Enterprise Unix Roundup: Rent-to-Own, Sun Style Page 2
|Main||In Other News||Recent Updates||Tips of the Trade|
» In addition to its attempts to conquer the desktop terrain, Sun's JavaOne developer conference could almost be described as Open Source gone wild. The systems vendor open sourced its Java System Application Server Platform Edition 9.0 and the Java System Enterprise Server Bus (ESB) under the CDDL license, as well as introduced a new spec for business integration. Executives promise more code will follow.
Sun also made nice with Big Blue. The two vendors set aside their differences over Open Source and extended their technology agreement for another 10 years. Under the terms of the agreement, IBM will license and use Java Platform Enterprise, Standard, and Micro Editions, along with Java Card, in its software products.
As a result, IBM will port its WebSphere middleware to Solaris 10 for x86 hardware, while adding support for the operating system to its DB2, Rational, and Tivoli products.
The two companies will also continue to work together in the Java Community Process.
» Novell's attempt to make SCO's claims of malicious and falsely claimed Unix copyrights go away has been quashed. U.S. District Judge Dale Kimball ruled Monday that the court could not dismiss the case on matters of law, as matters of fact in the case have not yet been determined.
Onward and upward. The case moves forward into the discovery phase.
» In other Novell news, GroupWise 7, codenamed "Sequoia," is on the march. It reached public beta status earlier this week and is expected to go gold later in the summer. New features in the collaboration server include integrated e-mail and instant messaging and enhanced Outlook support. More importantly, it is the first version of GroupWise to run on SUSE Linux. For companies still wavering on Linux, Novell is sweetening the deal by bundling the product with a free copy of SUSE Linux Enterprise Server. Enterprises concerned Novell might flake on its support for the once-leading collaboration software should rest easy: The vendor has pledged support for the product through 2015.
» Enterprises lukewarm on the in-the-trenches-approach Apache often requires may find Covalent Enterprise Ready Server a perfect solution. The latest version supports Apache 1.3 and 2.0, both separately and simultaneously. ServerWatch took the souped-up enterprise server out for a test drive.
The Apache Foundation released version 2.1.6-alpha of its Web server. This particular release addresses a vulnerability in the manner in which Apache handles proxy keepalives. A more complete feature list for the eventual 2.2 release of the server is available on the Apache Web site.
Several vulnerabilities in ClamAV have been discovered and disclosed in the past week: a pair of file-handling denial of service vulnerabilities, a database update DoS a>, and a Quantum archive decompression DoS.
Tips of the Trade
Apache admins, like most Linux/Unix sysadmins, know how to monitor logs in real time with the tail command:
|# tail -f /var/log/apache2/access_log|
This is nice, and it works. But, of course, most admins prefer newer, shinier, and better, like apachetop. apachetop provides a real-time snapshot of everything the Apache server is doing, in a top-style format.
apachetop compiles and installs on any Linux, BSD, Solaris, or Mac OS X system. It must be run as root. This example specifies which file to watch, and refreshes the data every 10 seconds:
|# apachetop -f /var/log/apache2/access_log -d 10|
In a strict sense, apachetop is not real time because it's reading the logfiles. But it should be close enough for most admins. Another useful option is -l, which lowercases all filenames, so that /FILENAME and /filename are counted as the same, instead of generating separate statistics.
To sort the display, press 's to get to the sort submenu, then choose:
r Sort by REQUESTS R Sort by REQUESTS/SECOND b Sort by BYTES B Sort by BYTES/SECOND
You may also sort by return codes, URLs, Referrers, and IPs. apachetop has a lot more useful sorting options; see the readme for more information.
Carla Schroder writes the Tips of the Trade section of Enterprise Unix Roundup. She also appears on Enterprise Networking Planet and Linux Planet, covering Linux from the desktop to the server room, and is the author of the Linux Cookbook.
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