Proxmox 加入 dummy

echo dummy >>/etc/modules;
cat <<EOF>/etc/network/interfaces

up ip link add dummy0 type dummy

up ip link set dummy0 multicast on

iface dummy0 inet manual

auto vmbr10
iface vmbr10 inet manual
        bridge-ports dummy0
        bridge-stp off
        bridge-fd 0
EOF

reboot;

限制加入 windows ad Linux ssh 群組

不使用 realm 限制，編輯 /etc/ssh/sshd_config 加入
DenyGroups "[domain name]\domain users"

CentOS7 加入 Windows AD，使用 windbind + sssd 適用 samba server

安裝 
yum install samba samba-client samba-client-libs samba-common samba-common-libs samba-common-tools samba-krb5-printing samba-libs samba-python samba-winbind samba-winbind-modules  samba-winbind-clients samba-winbind-krb5-locator krb5-devel krb5-pkinit krb5-libs krb5-workstation krb5-server-ldap krb5-server  pam_krb5 realmd oddjob-mkhomedir oddjob -y

加入 windows ad
realm join --client-software=winbind [domain.name]

Samba 4 支援 windows acl

在 [global] 加入以下設定

nt acl support = yes
inherit acls = yes

map acl inherit = yes
map archive = no

Extend net-snmp 筆記

編輯 snmpd.conf 加入
extend test /bin/echo hello

取回值
snmpwalk -v2c -c testing 127.0.0.1 nsExtendOutput1
snmpwalk -v2c -c testing  127.0.0.1  .1.3.6.1.4.1.8072.1.3.2.3.1.1

尋找 OID
snmptranslate -On NET-SNMP-EXTEND-MIB::nsExtendOutput1Line.\"test\"