WP Contact Form III – You do not have sufficient permissions to access this page Error
One of my WordPress blog page show me an error message “You do not have sufficient permissions to access this page” when I was try to click on Contact Form under my WordPress Settings page as example URL: http://www.MYBLOGsite.com/blog/wp-admin/options-general.php?page=wp-contact-form-iii/wp-contactform-iii-options.php.
In fact, I have try changed the files and folder permission to “777” and I’m still not able to access it.
If you refer to WP Contact Form III WordPress Plugins page, you should be able to noticed it’s only “Compatible up to: 2.7-bleeding”.
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WP Cache Error “semget() failed: Permission denied” Solved
For some reason, the Planet MY Blog WordPress was not accessible due to WP Cache Error “semget() failed: Permission denied” for the past few days.
After some investigation, I found the problem and you can easily solve by opening the wp-cache config file “wp-cache-config.php” which you should be found in the /wp-content/ directory.
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How to create full right permission on Samba share
Samba is an Open Source/Free Software suite that has, since 1992, provided file and print services to all manner of SMB/CIFS clients, including the numerous versions of Microsoft Windows operating systems. Samba is freely available under the GNU General Public License.
Samba comes with different types of permissions for share and for some reason you may require creating new files and directory with full right permission 777.
The example show as below will guide you how to configure Samba share drive with 777 full right permission for any new files or folders created in /data/shared(example)?
[SHARED]
comment = SHARED data
path = /data/shared
valid users = user1, user2, planetmy
writeable = yes
create mask = 0777
force create mode = 0777
directory mask = 777
max connections = 10
veto files = .??*/.ssh/.profile/.mailrc
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SSH Remote Access Authentication Tips
My friend was try to setup Linux SSH public key authentication without password and he’s keep getting password prompt. I will not going to go through how to setup SSH public key authentication here and I just would like to share few troubleshoot tips in order to fix the similar problem here:
1. Checking /var/log/messages file
Basically SSH hints are written to “/var/log/messages” file, you should be able to see any error messages here. For an example “Authentication refused: bad ownership or
modes for directory /root cannot set to 775“. Perhaps you’re require to change /root folder permission to make it work (may apply to other /home folder as well).
Type #chmod 755 /root or #chmod 700 /root can solve authentication problem.
2. Permissions
Please make sure you have correct file and folder permission as suggested below.
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SSH problem
I can’t login to the server using SSH and the TELNET service is NOT enable by default. Thanks god, I have DELL DRAC enable, I managed to login using console.
I’m getting an error messages in /var/log/messages and SSH connection refused error on one of my SuSE Linux box as below:
Aug 2 16:20:05 planetmy sshd[22531]: fatal: /var/lib/empty must be owned by root and not group or world-writable.
Aug 20 16:20:06 planetmy sshd[22546]: fatal: /var/lib/empty must be owned by root and not group or world-writable.
Aug 20 16:20:19 planetmy sshd[22797]: fatal: /var/lib/empty must be owned by root and not group or world-writable.
Aug 20 16:20:47 planetmy sshd[22838]: fatal: /var/lib/empty must be owned by root and not group or world-writable.
Aug 20 16:21:37 planetmy sshd[23598]: fatal: /var/lib/empty must be owned by root and not group or world-writable.
I found one of the stupid guy issue chmod 755 command in /var/log/messages:
Aug 20 16:15:37 planetmy sudo: username1 : TTY=pts/63 ; PWD=/ ; USER=root ; COMMAND=/usr/bin/ find ./ -type d -exec chmod 775 {}
Basically he try to changed all folder with permission 775(rwxrwxr-x) on Linux server.
Looking at man 8 sshd:
/var/lib/empty
chroot(2) directory used by sshd during privilege separation in the pre-authentication phase. The directory should not contain any files and must be owned by root and not group or world- writable.
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