Snmpd正在运行.我通过运行snmpwalk(snmpwalk -v 1 -c public localhost)检查状态.
为了得到cpu信息,我运行了这个：
snmpget -v 1 -c "community" localhost .1.3.6.1.4.1.2021.10.1.3.1
Timeout: No Response from localhost
我是否需要启用某些功能才能启用SNMP监控？
snmpd.conf中：
############################################################################### # # EXAMPLE.conf: # An example configuration file for configuring the Net-SNMP agent ('snmpd') # See the 'snmpd.conf(5)' man page for details # # Some entries are deliberately commented out,and will need to be explicitly activated # ############################################################################### # # AGENT BEHAVIoUR # # Listen for connections from the local system only agentAddress udp:127.0.0.1:161 # Listen for connections on all interfaces (both IPv4 *and* IPv6) #agentAddress udp:161,udp6:[::1]:161 ############################################################################### # # SNMPv3 AUTHENTICATION # # Note that these particular settings don't actually belong here. # They should be copied to the file /var/lib/snmp/snmpd.conf # and the passwords changed,before being uncommented in that file *only*. # Then restart the agent # createuser authOnlyUser MD5 "remember to change this password" # createuser authPrivUser SHA "remember to change this one too" DES # createuser internalUser MD5 "this is only ever used internally,but still change the password" # If you also change the usernames (which might be sensible),# then remember to update the other occurances in this example config file to match. ############################################################################### # # ACCESS CONTROL # # system + hrSystem groups only view systemonly included .1.3.6.1.2.1.1 view systemonly included .1.3.6.1.2.1.25.1 # Full access from the local host #rocommunity public localhost # Default access to basic system info rocommunity public default -V systemonly # Full access from an example network # Adjust this network address to match your local # settings,change the community string,# and check the 'agentAddress' setting above #rocommunity secret 10.0.0.0/16 # Full read-only access for SNMPv3 rouser authOnlyUser # Full write access for encrypted requests # Remember to activate the 'createuser' lines above #rwuser authPrivUser priv # It's no longer typically necessary to use the full 'com2sec/group/access' configuration # r[ou]user and r[ow]community,together with suitable views,should cover most requirements ############################################################################### # # SYstem informatION # # Note that setting these values here,results in the corresponding MIB objects being 'read-only' # See snmpd.conf(5) for more details sysLocation Sitting on the Dock of the Bay sysContact Me <me@example.org> # Application + End-to-End layers sysServices 72 # # Process Monitoring # # At least one 'mountd' process proc mountd # No more than 4 'ntalkd' processes - 0 is OK proc ntalkd 4 # At least one 'sendmail' process,but no more than 10 proc sendmail 10 1 # Walk the UCD-SNMP-MIB::prTable to see the resulting output # Note that this table will be empty if there are no "proc" entries in the snmpd.conf file # # disk Monitoring # # 10MBs required on root disk,5% free on /var,10% free on all other disks disk / 10000 disk /var 5% includeAlldisks 10% # Walk the UCD-SNMP-MIB::dskTable to see the resulting output # Note that this table will be empty if there are no "disk" entries in the snmpd.conf file # # System Load # # Unacceptable 1-,5-,and 15-minute load averages load 12 10 5 # Walk the UCD-SNMP-MIB::laTable to see the resulting output # Note that this table *will* be populated,even without a "load" entry in the snmpd.conf file ############################################################################### # # ACTIVE MONITORING # # send SNMPv1 traps trapsink localhost public # send SNMPv2c traps #trap2sink localhost public # send SNMPv2c INFORMs #informsink localhost public # Note that you typically only want *one* of these three lines # Uncommenting two (or all three) will result in multiple copies of each notification. # # Event MIB - automatically generate alerts # # Remember to activate the 'createuser' lines above iquerySecName internalUser rouser internalUser # generate traps on UCD error conditions defaultMonitors yes # generate traps on linkUp/Down linkupdownNotifications yes ############################################################################### # # EXTENDING THE AGENT # # # Arbitrary extension commands # extend test1 /bin/echo Hello,world! extend-sh test2 echo Hello,world! ; echo Hi there ; exit 35 #extend-sh test3 /bin/sh /tmp/shtest # Note that this last entry requires the script '/tmp/shtest' to be created first,# containing the same three shell commands,before the line is uncommented # Walk the NET-SNMP-EXTEND-MIB tables (nsExtendConfigTable,nsExtendOutput1Table # and nsExtendOutput2Table) to see the resulting output # Note that the "extend" directive supercedes the prevIoUs "exec" and "sh" directives # However,walking the UCD-SNMP-MIB::extTable should still returns the same output,# as well as the fuller results in the above tables. # # "Pass-through" MIB extension command # #pass .1.3.6.1.4.1.8072.2.255 /bin/sh PREFIX/local/passtest #pass .1.3.6.1.4.1.8072.2.255 /usr/bin/perl PREFIX/local/passtest.pl # Note that this requires one of the two 'passtest' scripts to be installed first,# before the appropriate line is uncommented. # These scripts can be found in the 'local' directory of the source distribution,# and are not installed automatically. # Walk the NET-SNMP-PASS-MIB::netSnmpPassExamples subtree to see the resulting output # # AgentX Sub-agents # # Run as an AgentX master agent master agentx # Listen for network connections (from localhost) # rather than the default named socket /var/agentx/master #agentXSocket tcp:localhost:705
您需要确保“localhost”可以使用该社区字符串“社区”.并且看起来您在snmpd.conf文件中根本没有定义社区字符串“community”.
对于初始测试,将rwcommunity community localhost添加为“/etc/snmp/snmpd.conf”中的第一行并重新启动该服务.
这应该允许您仅从本地主机执行SNMP步骤.
如果您希望能够从其他地方读取SNMP数据,只需将“localhost”更改为您要连接的服务器的IP地址或主机名.在生产环境中,您可能希望通过将其设置为只读,使用更加模糊的社区字符串或使用v2c / v3 secuirty定义来使SNMP更安全.为了测试,这应该让你去.
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