[SNMP] 安裝與設定 for Centos

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紀錄要如何在Centos安裝與設定SNMP 服務，以便於監控軟體後續的設定
安裝 snmp套件 
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yum -y install net-snmp net-snmp-utils

編輯snmp設定檔

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vi /etc/snmp/snmpd.conf

修改config

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####
# First, map the community name "public" into a "security name"

#       sec.name  source          community
com2sec notConfigUser  default       public         //通關密碼

####
# Second, map the security name into a group name:

#       groupName      securityModel securityName
group   notConfigGroup v1           notConfigUser
group   notConfigGroup v2c           notConfigUser

####
# Third, create a view for us to let the group have rights to:

# Make at least  snmpwalk -v 1 localhost -c public system fast again.
#       name           incl/excl     subtree         mask(optional)
view    systemview    included   .1.3.6.1.2.1.1
view    systemview    included   .1.3.6.1.2.1.25.1.1
view    systemview    included   .1                          //獲得所有的資訊

####
# Finally, grant the group read-only access to the systemview view.

#       group          context sec.model sec.level prefix read   write  notif
access  notConfigGroup ""      any       noauth    exact  systemview none none

# -----------------------------------------------------------------------------

啟動snmp+預設開機啟動

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systemctl enable snmpd.service
systemctl restart snmpd.service

防火牆放行udp161允許snmpd服務存取

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firewall-cmd --add-port=161/udp --permanent
firewall-cmd --reload