一、修改麒麟配置

因为中标麒麟yum可能找不到snmp的安装包，先按以下步骤修改配置。

二、修改 /etc/os-release（没有就新建该文件）

NAME="CentOS Linux"

VERSION="7 (AltArch)"

ID="centos"

ID_LIKE="rhel fedora"

VERSION_ID="7"

PRETTY_NAME="CentOS Linux 7 (AltArch)"

ANSI_COLOR="0;31"

CPE_NAME="cpe:/o:centos:centos:7:server"

HOME_URL="https://www.centos.org/"

BUG_REPORT_URL="https://bugs.centos.org/" 

CENTOS_MANTISBT_PROJECT="CentOS-7"

CENTOS_MANTISBT_PROJECT_VERSION="7"

REDHAT_SUPPORT_PRODUCT="centos"

REDHAT_SUPPORT_PRODUCT_VERSION="7"

三、修改yum配置文件/etc/yum.conf

配置项改为：distroverpkg=centos-release

四、修改yum源 /etc/yum.repos.d/CentOS-Base.repo

[base]

name=CentOS-$releasever- Base

baseurl=https://mirrors.aliyun.com/centos-altarch/7/os/$basearch/

gpgcheck=0

gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 

#releasedupdates

[updates]

name=CentOS-$releasever- Updates

baseurl=https://mirrors.aliyun.com/centos-altarch/7/updates/$basearch/

gpgcheck=0

gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 

#additionalpackages that may be useful

[extras]

name=CentOS-$releasever- Extras

baseurl=https://mirrors.aliyun.com/centos-altarch/7/extras/$basearch/

gpgcheck=0

gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

enabled=1 

#additionalpackages that extend functionality of existing packages

[centosplus]

name=CentOS-$releasever- Plus

baseurl=https://mirrors.aliyun.com/centos-altarch/7/centosplus/$basearch/

gpgcheck=0

enabled=0

gpgkey=https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

执行     yum makecache

五、安装snmp

yum install -y net-snmp net-snmp-utils

可以理解为net-snmp是服务端，net-snmp-utils是客户端工具集；如果机器上只需要搭建服务那可以只安装net-snmp。

由于依赖关系，其实最终会安装net-snmp net-snmp-utils net-snmp-agent net-snmp-libs perl-Data-Dumper等几个包。

六、启动snmp服务

service snmpd start

service snmpd restart

service snmpd stop

加入随机自启动

chkconfig snmpd on

七、使用snmp

snmpwalk -v 2c -c public localhost .1.3.6.1.2.1.1

最后那个.x.x.x的叫OID，一个OID对应一种设备（比如网卡、磁盘等，在不同机器上同种设备的OID是一样的）

现在可以获取到一些基本的信息了，但是想获取更多的信息，还需要进一步配置 snmpd.conf

八、配置 /etc/snmpd/snmpd.conf

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

# sec.name source community

com2sec notConfigUser default public

####

# 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 all included .1

####

# 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

access notConfigGroup "" any noauth exact all all all

..........

###############################################################################

# Process checks.

proc mountd

proc ntalkd 4

proc sendmail 10 1

# # % snmpwalk -v 1 localhost -c public .1.3.6.1.4.1.2021.2

enterprises.ucdavis.procTable.prEntry.prIndex.1 = 1

enterprises.ucdavis.procTable.prEntry.prIndex.2 = 2

enterprises.ucdavis.procTable.prEntry.prIndex.3 = 3

enterprises.ucdavis.procTable.prEntry.prNames.1 = "mountd"

enterprises.ucdavis.procTable.prEntry.prNames.2 = "ntalkd"

enterprises.ucdavis.procTable.prEntry.prNames.3 = "sendmail"

enterprises.ucdavis.procTable.prEntry.prMin.1 = 0

enterprises.ucdavis.procTable.prEntry.prMin.2 = 0

enterprises.ucdavis.procTable.prEntry.prMin.3 = 1

enterprises.ucdavis.procTable.prEntry.prMax.1 = 0

enterprises.ucdavis.procTable.prEntry.prMax.2 = 4

enterprises.ucdavis.procTable.prEntry.prMax.3 = 10

enterprises.ucdavis.procTable.prEntry.prCount.1 = 0

enterprises.ucdavis.procTable.prEntry.prCount.2 = 0

enterprises.ucdavis.procTable.prEntry.prCount.3 = 1

enterprises.ucdavis.procTable.prEntry.prErrorFlag.1 = 1

enterprises.ucdavis.procTable.prEntry.prErrorFlag.2 = 0

enterprises.ucdavis.procTable.prEntry.prErrorFlag.3 = 0

enterprises.ucdavis.procTable.prEntry.prErrMessage.1 = "No mountd process running."enterprises.ucdavis.procTable.prEntry.prErrMessage.2 = ""

enterprises.ucdavis.procTable.prEntry.prErrMessage.3 = ""

enterprises.ucdavis.procTable.prEntry.prErrFix.1 = 0

enterprises.ucdavis.procTable.prEntry.prErrFix.2 = 0

enterprises.ucdavis.procTable.prEntry.prErrFix.3 = 0 

...........

# disk checks

disk / 10000

load [1MAX=12.0] [5MAX=12.0] [15MAX=12.0]

load 12 14 14

# % snmpwalk -v 1 localhost -c public .1.3.6.1.4.1.2021.10

enterprises.ucdavis.loadTable.laEntry.loadaveIndex.1 = 1

enterprises.ucdavis.loadTable.laEntry.loadaveIndex.2 = 2

enterprises.ucdavis.loadTable.laEntry.loadaveIndex.3 = 3

enterprises.ucdavis.loadTable.laEntry.loadaveNames.1 = "Load-1"

enterprises.ucdavis.loadTable.laEntry.loadaveNames.2 = "Load-5"

enterprises.ucdavis.loadTable.laEntry.loadaveNames.3 = "Load-15"

enterprises.ucdavis.loadTable.laEntry.loadaveLoad.1 = "0.49" Hex: 30 2E 34 39

enterprises.ucdavis.loadTable.laEntry.loadaveLoad.2 = "0.31" Hex: 30 2E 33 31

enterprises.ucdavis.loadTable.laEntry.loadaveLoad.3 = "0.26" Hex: 30 2E 32 36

enterprises.ucdavis.loadTable.laEntry.loadaveConfig.1 = "12.00"

enterprises.ucdavis.loadTable.laEntry.loadaveConfig.2 = "14.00"

enterprises.ucdavis.loadTable.laEntry.loadaveConfig.3 = "14.00"

enterprises.ucdavis.loadTable.laEntry.loadaveErrorFlag.1 = 0

enterprises.ucdavis.loadTable.laEntry.loadaveErrorFlag.2 = 0

enterprises.ucdavis.loadTable.laEntry.loadaveErrorFlag.3 = 0

enterprises.ucdavis.loadTable.laEntry.loadaveErrMessage.1 = ""

enterprises.ucdavis.loadTable.laEntry.loadaveErrMessage.2 = ""

enterprises.ucdavis.loadTable.laEntry.loadaveErrMessage.3 = ""