When installing and configuring Zimbra for the first time on RHEL/CentOS 6, it return that LDAP failed to initialize and then the config script exit. The log file probably indicate the following error : Initializing ldap… *** Running as zimbra user: /opt/zimbra/libexec/zmldapinitsudo: sorry, you must have a tty to run sudo IO::Socket::INET: connect: Connection refused… Read More »
VMware Server performance can be improved in so many ways… there are some recomendation that I’ve discovered when I was using this product at large before moving them to ESXi : Use preallocated virtual disk Use as less virtual hardware as possible – do not add unneeded hardware Use ext4 or XFS filesystem (if host… Read More »
VMware allow four type of virtual disk (vmdk) : 0 : single growable virtual disk 1 : growable virtual disk split in 2Gb files 2 : single preallocated virtual disk 3 : preallocated virtual disk split in 2Gb files vmware-vdiskmanager -r <source-disk> -t <type> <target-disk> Now, if you want to convert your growable disk into… Read More »
Do the following to find and replace text string in a whole file using the Vi text editor : 1. Enter in command mode by typing ” : ” 2. Your command should look like this : :%s/search_for_text/replace_with_this_text/g NOTE : To search & replace a string containing slashes ” / “, use a coma ”… Read More »
In some rare circumstances, your system may boot without network interface and you discover the following message in dmesg : udev: renamed network interface eth0 to eth1 Since RHEL6, kudzu is no longer available since the kernel and udev take care of hardware changes. So, you need to modify using udev to get back you’re… Read More »
To add a static route in Mac OSX, do the following as root in the terminal : route -n add “network/prefix” “gateway” Example : route -n add 10.0.0.0/8 10.16.1.1 To print the routine table, use the following command : netstat -nr
MacOSX run a local named caching server. In some reason you may need to refresh it manually to get a resent updated DNS record. Under Mac OSX 10.8 and above, use the following command using the terminal : sudo killall -HUP mDNSResponder Under Mac OSX 10.5 and 10.6, use : sudo dscacheutil -flushcache Under Mac… Read More »
To permanently disable local dns server on a MacOSX Server simply run the following command as root : sudo /bin/launchctl unload -w /System/Library/LaunchDaemons/org.isc.named.plist You will be prompted to enter the administrative password next and you’re done!
Trying to import a MySQL dump and/or starting mysqld return the following error : [ERROR] bdb: fatal region error detected; run recovery [ERROR] Fatal error: Can’t open and lock privilege tables: Table ‘host’ is read only Probably the MySQL database directory does not have the right privileges. The permission scheme should look like this :… Read More »
Latest VMware Workstation (such as VMware-Workstation-Full-7.1.4-385536.x86_64.bundle) can be uninstalled using the following command on a Linux host : vmware-installer -u vmware-workstation You may have a look at the list of VMware product installed and their version using this command : vmware-installer -l