Apache Prefork and Worker

Prefork MPM uses multiple child processes with one thread each and each process handles one connection at a time.

Worker MPM uses multiple child processes with many threads each. Each thread handles one connection at a time.

Полезные алиасы git

git config --global alias.st status
git config --global alias.ci 'commit -v'
git config --global alias.br branch
git config --global alias.co checkout

Bind's statistics channel and selinux

Mar 17 18:58:19 dns01 named[12144]: /etc/named.conf:39: couldn't allocate statistics channel 127.0.0.1#8053: permission denied

# setenforce 0
# semanage port -a -t dns_port_t -p tcp 8053
# setenforce 1

/etc/init.d/named restart