目的

複数台のマシンの死活監視をする場合に良いソフトはないかなと探した所、deadmanを発見した。そこで今回はdeadmanを使ってみる。

構築

構築とは言ってもただダウンロードするだけ

git clone https://github.com/upa/deadman.git
cd deadman/

設定ファイルの編集

nano /deadman.conf

以下の様に編集

#
#       deadman config
#

gateway 192.168.11.1
user1 192.168.11.2
user2 192.168.11.3
user3 192.168.11.4
user4 192.168.11.5
user5 192.168.11.6
user6 192.168.11.7
user7 192.168.11.8
user8 192.168.11.9
user9 192.168.11.10
user10 192.168.11.11
user11 192.168.11.12
user12 192.168.11.13
user13 192.168.11.14
user14 192.168.11.15


#
#       ping via ssh relay host.
#
#       Syntax
#       Name    Address relay=SSHHOST os=Linux user=USER key=RSAKEYPATH
#
#       In order to use ssh-relay, "relay" attribute must be specified.
#       if "os" is not specified, same OS name running the daedman is used.

#google-via-ssh 173.194.117.176 relay=X.X.X.X os=Linux


#
#       ping via snmpping (SNMPv2).  See RFC4560.
#
#       Syntax
#       Name    Address relay=SNMPHOST via=snmp community=COMMUNITY
#
#googleDNS-via-snmp     8.8.8.8 relay=X.X.X.X via=snmp community=public


#
#       ping via network namespace (Linux only).
#               Note: root privilege is required to exec anything on netns
#
#       Syntax
#       Name    Address relay=NETNSNAME via=netns
#
#googleDNS-via-netns    8.8.8.8 relay=netns1 via=netns

#
#       ping via vrf (Linux only).
#               Note: root privilege is required to exec anything on vrf
#
#       Syntax
#       Name    Address relay=VRFNAME via=vrf
#
#googleDNS-via-vrf      8.8.8.8 relay=vrf1 via=vrf

#
#       tcp based ping (Linux only).
#               Note: root privilege is required to manipulate raw-socket
#               Note: tested with only linux, but macOS can be work.
#
#       Syntax
#       Name    Address tcp=dstport:80
#
#wide-tcp80     203.178.136.59 tcp=dstport:80

実行

$ ./deadman deadman.conf

確認

おぉすごい

   From: LAPTOP-HADFF4IQ (127.0.1.1)                                                            [ver 22.02.10]
   RTT Scale 10ms. Keys: (r)efresh

   HOSTNAME  ADDRESS             LOSS  RTT  AVG  SNT  RESULT
   gateway   192.168.11.1          0%    4    3   78  ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
   user1     192.168.11.2        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user2     192.168.11.3          0%    0    0   78  ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
   user3     192.168.11.4        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user4     192.168.11.5        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user5     192.168.11.6        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user6     192.168.11.7          0%    4    4   78  ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
   user7     192.168.11.8        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user8     192.168.11.9        100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user9     192.168.11.10       100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user10    192.168.11.11       100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user11    192.168.11.12       100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user12    192.168.11.13       100%    0    0   78  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   user13    192.168.11.14         1%  102  135   78  █▇███████▂█▁▅█▁▄██▂█▄█▃▄▇▁███████▆▆▂███▅▅█████▅███▅███▇█
 > user14    192.168.11.15       100%    0    0   77  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX