Posts Tagged linux
when we open user_dir in apache, we should change the /home as 711
i changed it to 711 no,but still have some problems
the developer use Ruby , it shows the following in apache error log.
Permission denied: xsendfile: cannot open file:
change the directory that store the file, it works well.
so seldom use /home/user to store some files that apache will visit.
at the title, benefits in short
1. the Google use CDN, so the clients can browser faster than your own server.
2. use it can save ur bandwidth and network usage
3. Increases Number Of Parallel Downloads
but in China, maybe not well enough, because the Google is f**ked sometimes.
The programmers met a problem when use Typo3, the clients can’t login with IE but can login with Firefox/Opera.
After the investigation , we find the problem is the cookies. Typo3 can set the domain for the cookies. change the setting to “.domain.com” it works.
btw, close the browers and clean the cookies the most right way.
In order to do this properly, remember to close your browser first. This is because all your cookies are held in memory until you close your browser. So, if you delete the file with your browser open, it will make a new file when you close it, and your cookies will be back.
Refer of the cookies.
So excellent articles, but the blogspot.com is blocked by STH. so i paste it here.
Original Link: http://0xfe.blogspot.com/2006/03/troubleshooting-unix-systems-with-lsof.html
One of the least-talked-about tools in a UNIX sysadmin’s toolkit is lsof. Lsof lists information about files opened by processes. But that’s really an understatement.
Most people forget that, in UNIX, (almost) everything is a file. The OS makes hardware available to applications by way of files in /dev. Kernel, system, memory, device etc. information in made available inside files in /proc. TCP/UDP sockets are sometimes represented internally as files. Even directories are really just files containing other filenames.
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there are lots of articles on Linux/Vim/Others.
they dig depth of the linux commands.
lshw -class memory
lshw -class disk
1. create ur own packages, put it into www home directory. let clients can visit from network
such as /var/www/html/my_repo
http://my_ip/my_repo even ftp://my_ip/my_repo
2. create u repo files on clients
name=My Cluster Repo $basearch
gpgcheck=0 # if u read further, we should change it to “1″ for security.
3. yum search some_pkgs
u should get ur repo now.
I met the problem when i rebuild the ceph
Q: RPM build errors:
Installed (but unpackaged) file(s) found:
A: add the files to
ur files that unpacked
Bacula is good tools for backup the linux system.
bacula-dir is for director and set the client and backup themes here.(Run on the server)
bacula-sd is storage daemon (Run on the server)
bacula-fd is file daemon (Run on the clients)
Enable two important repo for CentOS 5
Rpmforge ( many packages )
warning: Certificate validation failed; consider using the certname configuration option
err: Could not retrieve catalog: Certificates were not trusted: certificate verify failed
warning: Not using cache on failed catalog
ip puppet puppet.ur_domain.com
puppetd –server puppet.ur_domain.com –waitforcert 60 –test