Linux System Admin Blog….
WHM Logins shows error :: plugin error - Analytics: plugin not found
New error has been seen while login to WHM :
plugin error – Analytics: plugin not found
Error logs shows no error.
Here is the fix :
rpm -e --nodeps --justdb cpanel-analytics
yum --disablerepo="*" --enablerepo="cpanel-plugins" install cpanel-analytics
Norton for a long time used to show clients site as blacklisted, I registered for https://safeweb.norton.com/ and sent a review request........ days passed by with no reply.
Scanned site at sitecheck.sucuri.net which too showed clean but blacklisted at Norton.
Later found a quick solution on Norton forums :
Submit category change request with WebPulse:
https://sitereview.symantec.com/#/
Please enter a valid URL for the review process -
> valid URL for review -
https://ecoinsee.org/
> Filtering Service - select 'Norton Safe Web'-
> Your suggested category - 'Select a Category'-
> Comments - add 'Safe Web Orange Caution with 0 Threats'-
After few hours I see the site now clean.
https://safeweb.norton.com/report/show?url=ecoinsee.org
Today I found a cPanel CentOS 7 server with empty log files :
-rw------- 1 root root 0 Aug 18 05:57 cron
-rw------- 1 root root 0 Aug 18 05:57 maillog
-rw------- 1 root root 0 Aug 18 05:57 messages
-rw------- 1 root root 0 Aug 18 05:57 secure
Found a quick solution :
rm -f /var/lib/rsyslog/imjournal.state
service rsyslog restart
Server reboot and service restarts did not help however the above worked..
Voila the logs started working…….
A recently setup Plesk on CentOS 7 Server was showing errors under Backup manager :
Unable to execute SQL: Out of resources when opening file '/tmp/#sql_5226_0.MYI' (Errcode: 24 - Too many open files). SQL query: SHOW FULL COLUMNS IN `catalogindex_minimal_price`The MySQL configured was default and showed limits as below :
mysql> show global variables like 'open%';
+------------------+-------+
| Variable_name | Value |
+------------------+-------+
| open_files_limit | 1000 |
+------------------+-------+
1 row in set (0.00 sec)
mysql>To raise the limits I had to create a directory and create a configuration file as below :
cd /usr/lib/systemd/system
mkdir mysql.service.d
cd mysql.service.d/
nano -w override.conf# cat override.conf
[Service]
LimitNOFILE=5000
#
systemctl daemon-reload
service mysqld restart
Once this was applied the Backups worked fine. You may raise the limits as required.
While upgrading OpenVZ server I got an error as below :
====
--> Finished Dependency Resolution
Error: Package: 10:qemu-kvm-vz-2.9.0-16.3.vz7.8.x86_64 (factory)
Requires: libspice-server.so.1(SPICE_SERVER_0.12.5)(64bit)
You could try using --skip-broken to work around the problem
** Found 1 pre-existing rpmdb problem(s), 'yum check' output follows:
grub2-theme-openvz-1.4-1.vl7.noarch has installed conflicts grub2-theme-openvz: grub2-theme-openvz-1.4-1.vl7.noarch
====
This is a known bug and has been patched by OpenVZ Team and below is the fix :
Update vzlinux-release
yum update vzlinux-release
Enable virtuozzolinux-factory repo – edit /etc/yum.repos.d/vzlinux.repo or launch
yum-config-manager --enable virtuozzolinux-factory
Actually launch “yum update”
yum update
This fixes the bug. 🙂
Reference : https://bugs.openvz.org/browse/OVZ-6924
This morning I was doing some work with one of my website transfer and to see the changes on my MacBook laptop I knew I would need to flush the DNS cache so I wouldn’t have to wait for the cache to expire.
So for anyone else who needs to know the commands here they are:
OS X <= 10.5.1 (Mac OSX versions 10.5.1 and before)
lookupd -flushcache
OS X >= 10.5.2 (Mac OSX Leopard)
dscacheutil -flushcache
In Linux, the nscd daemon manages the DNS cache. To flush the DNS cache, restart the nscd daemon.
To restart the nscd daemon, use the command
/etc/rc.d/init.d/nscd restart
In Microsoft Windows, you can use the command to flush the DNS resolver cache:
C:\>ipconfig /flushdns
Windows IP Configuration
Successfully flushed the DNS Resolver Cache.
You can also use the command to view the DNS resolver cache.
ipconfig /displaydns
Hope that will help anyone out there who needs to flush their dns cache.
* linuxconf – A GUI interactive interface available on Redhat 6.0 or later which includes netconf configuration.
* netconf – A GUI interactive interface available on Redhat 6.0 and later.
* kbdconf – A Redhat Linux tool which configures the /etc/sysconfig/keyboard file which specifies the location of the keyboard map file. This is a GUI based tool.
* mouseconfig – A Redhat Linux tool used to configure the /etc/sysconfig.mouse file. This is a GUI tool.
* timeconfig – A Redhat Linux tool used to configure the /etc/sysconfig/clock file. This is a GUI tool used to set timezone and whether or not the clock is set to GMT time.
* kernelcfg – A Redhat kernel configuration utility to be started from X.
* stty – Used to configure and print the console devices.
* setterm – Set terminal attributes.
* vmstat – Report statistics on virtual memory.
X Configuration
* XF86Setup – A newer X configuration program with a GUI interface which modifies the “/etc/X11/XF86Config” configuration file.
* xf86config – An older X configuration program with a text based interface. It also modifies the “/etc/X11/XF86Config” configuration file.
* Xconfigurator – The Redhat tool used during system setup to configure X.
* SuperProbe – A program that probes the video card to determine its type for use with setting up X.
* xvidtune – This program will test video modes on the fly without modification to your X configuration. Read the usr/X11R6/lib/X11/doc/VideoModes.doc file before running this program.
Library and kernel Dependency Management
Library management:
* ldd – Used to determine shared libraries used by binary files. Type “ldd /bin/ls” to see the shared libraries used by the “ls” command.
* ldconfig – Used to update links and cache for system use of the most recent runtime shared libraries.
Kernel Management:
* lsmod – List currently installed kernel modules.
* depmod – Creates a dependency file, “modules.dep” in the directory “/lib/modules/x.x.x”, later used by modprobe to automatically load the relevant modules.
* insmod – Installs a loadable kernel module into the running kernel.
* rmmod – Unloads modules, Ex: rmmod ftape
* modprobe – Used to load a module or set of modules. Loads all modules specified in the file “modules.dep”.
General Diagnostic
System resources
* free – Show system memory availability and usage
* df – Show the amount of disk free space on each mounted filesystem.
* du – Show disk usage
* lspci – List PCI devices
* pnpdump – Lists ISA PNP device resource information.
* vmstat – Reports virtual memory statistics.
Other:
* env – List the current environment variables.
* printenv – Print a copy of the environment.
* set – Shows how the environment is set up. This command can be very useful when debugging the environment.
* runlevel – List the current and previous runlevel.
* uname – Print system information. In my case, it prints “Linux”.
* dmesg – Show the last kernel messages printed during the last boot.