調整check_mk的check時間

來源:互聯網
上載者:User

check_km文檔沒有看到如何修改passive check的間隔時間,不過觀察發現icinga裡面有一個變數check_interval可以設定在service裡面。

在check_mk_objects.cfg裡面的CPU load設定裡添加這個變數:

define service {  use                           check_mk_passive_perf  host_name                     StaticFileServer  service_description           CPU load  check_command                 check_mk-cpu.loads  check_interval                0.05}

因為單位是分鐘,這裡用0.05來表示3秒間隔。

然後重新啟動icinga

service icinga restart

web頁面裡面顯示間隔為3秒。

如果要改變所有的service的監控間隔,可以修改conf.d/check_mk_templates.cfg檔案中的名為check_mk_default的service:

# Template used by all other check_mk templates                                                                                                                                  define service {  name                            check_mk_default  register                        0  active_checks_enabled           1  passive_checks_enabled          1  parallelize_check               1  obsess_over_service             1  check_freshness                 0  notifications_enabled           1  event_handler_enabled           0  flap_detection_enabled          1  failure_prediction_enabled      1  process_perf_data               0  retain_status_information       1  retain_nonstatus_information    1  notification_interval           0  is_volatile                     0  normal_check_interval           0.05  retry_check_interval            0.05  max_check_attempts              1  notification_options            u,c,w,r,f,s  notification_period             24X7  check_period                    24X7}

上面將normal_check_ineterval和retry_check_interval修改成了0.05分鐘。

再修改icinga.cfg檔案:

command_check_interval=1s
external_command_buffer_slots=32768

加上日誌:

log_external_commands=1log_passive_checks=1

重新啟動後看日誌:

用grep命令把對某個伺服器的cpuload監控日誌過濾出來:

./icinga.log:127508:[1369051243] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127538:[1369051247] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127585:[1369051252] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127631:[1369051257] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127677:[1369051262] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127724:[1369051267] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127770:[1369051272] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127832:[1369051278] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127878:[1369051283] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127909:[1369051287] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:127955:[1369051292] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:128002:[1369051297] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:128048:[1369051302] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs./icinga.log:128125:[1369051309] PASSIVE SERVICE CHECK: StaticFileServer;CPU load;0;OK - 15min load 0.05 at 4 CPUs

可以看到基本上後面幾條都是間隔4-6秒。已經達到了修改的目的。

剛才是全域的設定,所有服務的檢查都改成了3s間隔,但是如果僅僅改動一個service的間隔可以嗎?我嘗試了把下面的配置單獨放在一個service中,而全域的配置仍然為1分鐘:

  normal_check_interval           0.05  retry_check_interval            0.05

日誌中顯示仍然為60秒間隔,儘管web頁面上已經顯示3s.

Service normal/retry check interval 3s/3s

結論:

1. 目前只找到全域的修改方式,對某個service修改無效。

2. 伺服器CPU load現在沒有什麼壓力,所以還看不出實際的效果。還需要壓力測試來證明。

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