If you have to deal with a CentOS server, there are some specific solutions, that should be known by a Linux administrator. Today I will post the solution for yum error.
You can get this error on software update. For example, when trying to update the installed packages:
root@srv [~]# yum update Loading “installonlyn” plugin error: no dbpath has been set error: cannot open Packages database in /%_dbpath Traceback (most recent call last): File “/usr/bin/yum”, line 29, in ? yummain.main(sys.argv[1:]) File “/usr/share/yum-cli/yummain.py”, line 82, in main base.getOptionsConfig(args) File “/usr/share/yum-cli/cli.py”, line 206, in getOptionsConfig errorlevel=opts.errorlevel) File “/usr/lib/python2.4/site-packages/yum/__init__.py”, line 132, in doConfigSetup self.conf = config.readMainConfig(startupconf) File “/usr/lib/python2.4/site-packages/yum/config.py”, line 598, in readMainConfig yumvars['releasever'] = _getsysver(startupconf.installroot, startupconf.distroverpkg) File “/usr/lib/python2.4/site-packages/yum/config.py”, line 661, in _getsysver idx = ts.dbMatch(‘provides’, distroverpkg) TypeError: rpmdb open failed
Let’s see the error message. It tells us: error: no dbpath has been set. How should we proceed?
First of all, you need to try to clear the database. Here is the set of commands that should help you to do this:
#yum clean all #rm -f /var/lib/rpm/__db* #rpm –rebuilddb #yum update
If this doesn’t help, here is another set:
#rm /dev/urandom #mknod -m 644 /dev/urandom c 1 9
After that, run
#yum clean all
This should do the trick.
