1) После установки "чистой" ОС и обновления пакетов до актуального состояния нам могут понадобиться пакеты из сторонних репозиториев, пример: htop, его в стандартных репо просто нет.
Ниже буду писать список репозиториев, принесших пользу лично мне.
Fedoraproject Epel x86_64
для версии 6,
для 7 версии.
для подключения к своей системе устанавливаем RPM epel-release.
(В случае возникновения Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again)
Фикс простой:
vim /etc/yum.repos.d/epel.repo
И на строке mirrorlist=https заменяем на http.
2) Смена timezone на работающем сервере:
cp /usr/share/zoneinfo/Europe/moscow /etc/localtime
3) dot1q vlan на сетевых интерфейсах (from redhat customer portal)
modprobe 8021q
Configure your physical interface in
/etc/sysconfig/network-scripts/ifcfg-ethX, where
X is a unique number corresponding to a specific interface, as follows:
DEVICE=ethX
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
Configure the VLAN interface configuration in
/etc/sysconfig/network-scripts. The configuration filename should be the physical interface plus a
. character plus the VLAN ID number. For example, if the VLAN ID is 192, and the physical interface is
eth0, then the configuration filename should be
ifcfg-eth0.192:
DEVICE=ethX.192
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.1.1
NETMASK=255.255.255.0
USERCTL=no
NETWORK=192.168.1.0
VLAN=yes
If there is a need to configure a second VLAN, with for example, VLAN ID 193, on the same interface,
eth0 , add a new file with the name
eth0.193 with the VLAN configuration details.
Restart the networking service, in order for the changes to take effect, as follows:
service network restart
5) Использование Http proxy в yum и консоли (from centos docs):
To enable all
yum operations to use a proxy
server, specify the proxy server details in
/etc/yum.conf. The
proxy
setting must specify the proxy server as a complete URL,
including the TCP port number. If your proxy server requires a
username and password, specify these by adding
proxy_username and
proxy_password settings.
The settings below enable
yum to use the
proxy server
mycache.mydomain.com,
connecting to port 3128, with the username
yum-user and the
password
qwerty.
# The proxy server - proxy server:port number
proxy=http://mycache.mydomain.com:3128
# The account details for yum connections
proxy_username=yum-user
proxy_password=qwerty
To enable proxy access for a specific user, add the lines in the
example box below to the user's shell profile. For the default
bash shell, the profile is the file
~/.bash_profile. The settings below enable
yum to use the proxy server
mycache.mydomain.com,
connecting to port 3128.
# The Web proxy server used by this account
http_proxy="http://mycache.mydomain.com:3128"
export http_proxy
6) How to install dig on CentOS
yum install bind-utils
