Archive for the 'Troubleshooting' Category

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Viewing 31-40 of 225 FAQ -

Display Apache Server Status with mod_status
How do I display Apache server status such as current server activity and performance under Red Hat Enterprise Linux?
Linux tar: /dev/st0: Cannot write: Invalid argument error and solution
Q. When I run tar command it fails with an error that read as follows:
tar: /dev/st0: Cannot write: Invalid argument
How do I fix this error under CentOS / Debian / Fedora / RHEL Linux HP server systems?
How To Secure Apache Proxy Server (mod_proxy)
I’ve proxy (mod_proxy) enabled for Apache under Debian Linux 4.0 server. I’d like to use this to improve performance, but I don’t want an open proxy that can be used by anyone on the Internet? How do I secure my proxy as limiting access is essential as I’m using a forward proxy?
Linux Find Out If the PCIe / AGP / VGA Driver IS Installed OR NOT [ Radeon X1550 64 bit ]
I’ve ATI Radeon VGA [X1550 64 bit] card. How do I find find out if driver is installed or not under Linux distribution?
Postfix SASL ERROR: Password not accepted from server: 535 5.7.0 Error: authentication failed: authentication failure
Q. I’ve recently changed email user account password using passwd command, for one my postfix email server which requires SMTP authentication before sending an email. Now following error is logged into my /var/log/maillog file:
ERROR: Password not accepted from server: 535 5.7.0 Error: authentication failed: authentication failure
How do I solve this problem under Red Hat [...]
Best Method To Reboot Remote Linux / Windows / UNIX Server
Q. I’ve couple of Linux / Windows server hosted in remote data center? My ISP provides following option for rebooting the box:
a) Graceful shutdown command
b) An IPMI reboot
c) A power strip
Which one is the best way to reboot server and why?
How To Find and Overcome Shell Command Line Length Limitations
While using mv or rm command I get command line length error (Argument list too long error). How do I find out current running shell command line length limitations? How do I overcomes these limitations while writing UNIX / BSD / Linux shell utilities?
Ubuntu Linux Configure Gateway / Default Routing IP Address
How do I configure default router or gateway IP address under Ubuntu Linux / Debian Linux? How do I change default router / gateway IP under Ubuntu Linux?
Linux yum command skip updating packages
How can I skip any packages updating while using yum update command in CentOS / RedHat / RHEL / Fedora Linux server system?
Linux LVM error VG meta data inconsistent and Solution

Q. How do I fix the following error under CentOS Enterprise Linux:

LVM error VG meta data inconsistent

How do I fix this error?