The iPhone has some amazing features, and, sadly, it is lacking in some key ones. Jailbreaking is always an option, but, really, shouldn’t this amazing phone do the most simplistic of tasks without having to go around the entire system?
For example, the iPhone has limited vibration functions. Compared to a Blackberry in this regard, where the typical IT professional needs to be discrete in meetings but still needs to know the difference between an email (one vibration), a blackberry message (two quick vibrations), or an SMS message (three quick vibrations) in order to judge the urgency. The iPhone just does a short vibrate.. once.
With that aside, the phone is still amazing. Fix the alert options, and it could be a real contender in the office environment.
SMS message conversations blow the doors off of any other phone. But how does one back these up? Low-and-behold, iTunes syncs these up behind the scenes, but it doesn’t provide an interface to them. Say you want to preserve them, but don’t want them piling up on the phone.
A small script in perl on a linux box will happily take that file and format it for you. However, it does not have a way to determine who each party is. It will display all conversations to/from a particular person. Re-run it for preserved conversations with others.
The ESX console and the VI Client (newly re-branded as vSphere) the two ways to get in to an ESX server. When you have ‘multiple cooks’, it becomes a requirement to be able to track who has done what on the system, and this is where ESX can be tweaked to provide granular authentication.
The ESX console, honestly, should be avoided at all costs. It is very easy to completely disrupt your VM’s if you make a mistake in the console. However, the console is key in the event administrative steps are necessary, like importing a VMDK to a vmfs volume, enabling ssh, enabling monitoring, etc.
To enable LDAP authentication, log on to the console and enter the following command:
ul
liesxcfg-auth –enableldap –ldapserver=your.ldap.server.com –ldapbasedn=dc=yourdomain,dc=com/li
/ul
What this does it is enables the console to get user information from ldap as well as enable user authentication via LDAP.
A few services now need to be restart in order to reflect the new authentication scheme:
ul
li/etc/init.d/sshd restart/li
lifont style=position: absolute;overflow: hidden;height: 0;width: 0a href=http://www.videnov.com/#1084;#1077;#1073;#1077;#1083;#1080; #1074;#1072;#1088;#1085;#1072;/a/font/etc/init.d/vmware-vmkauthd restart/li
li/etc/init.d/mgmt-vmware restart/li
/ul
span style=text-decoration: underline;strongVI Client / vSphere Client
/strong/span
Now that the underlying system recognizes LDAP users and passwords, you have to enable them within the GUI and provide them with an access level.
ul
liStart up the VI Client and log in as root./li
liUnder File-gt;New select Add Permission.. and a new window will pop up./li
liOn the left side of the screen, toward the bottom, select Add../li
liFollow the prompts to add users and/or groups to the list on the left./li
liOn the right side, select the permission level you wish to grant them./li
/ul
Linux has made great strides in recent years. One of the main pains was when the root volume needs to be extended because so many steps are needed in order to make it work properly and the system is off-line during the entire time. Not any longer. With ext3, it is not only possible to extend the volume live, it is easy, but typical GUI’s, like system-config-lvm under Fedora, won’t let you.
This is not the recommended procedure, but it is safe to run. If something gets hosed, you are on your own. You have been warned.
The commands are:
Run pvdisplay to determine the number of Free extents that are available.
Run lvextend -l <extents> /dev/VolGroup00/LogVol00 to extend the volume.
And, finally, run resize2fs /dev/VolGroup00/LogVol00 to resize the ext3 filesystem out over the new space. This will take a very long time to complete, depending on, of course, the size of the old filesystem and the size of the newly available space.