Category Archives: Servers

Linux : Zimbra backup return error ServiceException: system failure: exception during auth

Having this error with Zimbra backups? 2013-11-13 11:26:32,788 INFO [qtp1377413258-164433:https://0.0.0.0:7071/service/admin/soap/GetMailQueueInfoRequest] [name=user@domain.tld;mid=15;ip=0.0.0.0;ua=ZimbraWebClient – GC30 (Mac);] SoapEngine – handler exception com.zimbra.common.service.ServiceException: system failure: exception during auth {RemoteManager: mail.domain.tld->zimbra@mail.domain.tld:22} ExceptionId:qtp1377413258-164433:https://0.0.0.0:7071/service/admin/soap/GetMailQueueInfoRequest:1384359992787:2ad736ecb0b90e52 Code:service.FAILURE This might be caused by the Zimbra user cannot establish a loopback SSH connection to the server. Zimbra rely on the network interface IP to establish the… Read More »

Linux : Apache fail to start Invalid command ‘SSLEngine’

Get this error message while trying to start Apache? Invalid command ‘SSLEngine’, perhaps misspelled or defined by a module not included in the server configuration Make sure you are loading mod_SSL by having this statement in your configuration file (such as httpd.conf, ssl.conf, vhost.conf) : LoadModule ssl_module modules/mod_ssl.so

Windows : Exchange 2013 ActiveSync unable to verify account information

Having issue connecting mobile devices to your new Exchange 2013 server and get “unable to verify account information” error message? Well there is several possible causes, however I find out that Windows Authentication is disabled by default in IIS and is the root cause if the issue with Exchange 2013. First, make sure the external… Read More »

Windows : Complete certificate request denied with IIS8

I recently end up with the following error while completing a certificate request on Windows Server 2012 and IIS 8 : Execption from HRESULT: 0x8007005(E_ACCESSDENIED) The workaround I’ve found is to manually install the certificate. Follow theses steps to proceed with a manual SSL certificate installation : 1. Open the Microsoft Management Console (well known… Read More »

Linux : Cacti the image cache directory does not exist

Getting this error trying to use the real time graph usage with Cacti? The Image Cache Directory directory does not exist. Please first create it and set permissions and then attempt to open another realtime graph. OR : The Image Cache Directory is not writable. Please set permissions and then attempt to open another realtime… Read More »

Linux : How to speedtest your connection from CLI

NOTE : This article has been edited since the initial post due to change on the script and latests wget updates [22/12/2016]. If you are used to the popular “SpeedTest.net” Web site to test your bandwidth connection, then here is how to use the same tool but using your Linux terminal. 1. Download the python… Read More »

Linux : Could not get shadow information for user

Having problems connecting to your server with SSH and get this error messages in the system logs? sshd[0000]: input_userauth_request: invalid user <user> sshd[0000]: error: Could not get shadow information for <user> sshd[0000]: Failed password for invalid user <user> from 0.0.0.0 port 00000 ssh2 This mean you are missing “UsePAM” directive and/or the directive is set… Read More »

Windows : Active Directory “The network path was not found”

Ending up with this error while trying to join a workstation to Active Directory domain? Computer Name/Domain Changes The following error occured attempting to join the domain “domain.local”: The network path was not found. The possible cause is one of the required services for Active Directory client computer is not started. Make sure those two… Read More »

Windows : The computer restarted unexpectedly error while doing SysPrep

Got this error while your deployed Windows Server 2008 start up for the first time doing SysPrep? The computer restarted unexpectedly or encountered an unexpected error. Windows installation cannot proceed. To install Windows, click “OK” to restart the computer, and then restart the installation. Well, you can get rid of this by editing the registry and… Read More »

Linux : How to reallocate swap into memory

Use the following script if you want to reallocate the content of your swap area back to RAM. Before doing this, make sure you have enough free memory. #!/bin/bash echo -e “\nOutput of free before:” free swapoff -a ; swapon -a echo -e “\nOutput of free after:” free echo “”