You may see the following notice in the system log. You need to raise the max open file in both system limit file and named configuration. Edit /etc/security/limits.conf and add : named soft nofile 4096 Inside the /var/named/chroot/etc/named.conf, add in the option section : files 4096;
On RHEL Linux v5, you may expect the following message in your system log : named[xxxxx]: network unreachable resolving ‘vhost.domain.tld/A/IN’: xxxx:xxx:xx::xxx#53 This is because by default, named try to listen IPv6 even if there is no IPv6 configured on the host. So you need to modify /etc/sysconfig/named and add the following parameter to tell bind… Read More »
You may notify in /var/log/messages the following error about smbd daemon regarding the cupsd printing service : smbd[5955]: [2011/05/13 15:03:59, 0] printing/print_cups.c:cups_connect(69) May 13 15:03:59 neptune smbd[5955]: Unable to connect to CUPS server localhost:631 – Connection refused This occur when the service is disabled. If you do not have a printer and do not want… Read More »
By default, Exchange use the local name for the ReceiveConnecter, which could be problematic with anti-spam measures on most MTA on the Internet. This is recommended to use your reverse dns name (FQDN), which in most case, should or must be the MX record. To do so, open the Exchange Management Shell and use the… Read More »
Using a restricted Webmin account for module “Users and Groups” to create new user, the following error occur : Failed to save user : User root is already using UID 0 This is because permission on User and Groups module for this user are incorrect. The user has no right to increment the UID. To… Read More »
Apache startup failed – look at /var/log/httpd/ssl_error_log and show the following error : Unable to configure RSA server private key SSL Library Error: x509 certificate routines:X509_check_private_key:key values mismatch The private key and the certificate do not match. You can compare the certificate and the key with the following commands : View the certificate modulus using… Read More »
Since Internet Information Server 7, there is no longer a GUI option to achieve this task. To do so, you need to manually proceed with the command line interface. Open a terminal (Run, cmd) ; cd %windir%\system32\inetsrv appcmd add backup <backupname>
To reset the htaccess password for the /admin-toaster control panel, use the following command line to update the password : htpasswd -b /usr/share/toaster/include/admin.htpasswd admin admin *This will update the password for the access file “admin.htpasswd”, the user “admin” with password “admin”.
MySQL start using temp directory when heavy database usage (very large query) are made, so it will start to create temporary tables on disk instead of memory when size will reach the smaller value of tmp_table_size or max_heap_table_size.
There is the procedure to update the free MaxMind GeoIP database : Go to temp directory and get the latest data : cd /tmp wget -q http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz Unpack the data file : gzip -d GeoIP.dat.gz Move the data to the appropriate directory : mv -f GeoIP.dat /usr/share/GeoIP/GeoIP.dat