未執行Munin警報/通知

Question

我有一個自定義的通知腳本，每當發生嚴重事件時，我都希望提供穆寧的數據。 不幸的是，在遵循官方文檔的同時，我無法使其正常運行。 它自身的通知腳本已經過測試，並且在從外殼程序中使用偽造數據進行調用時可以正常工作。 它的權限為755，因此執行也不應該成為問題。 因此，接觸鈎可能不會被調用。 我所做的是：

# /etc/munin/munin-conf.d/custom.cnf
    [...]
    contact.slack.command MUNIN_SERVICESTATE="${var:worst}" MUNIN_HOST="${var:host}" MUNIN_SERVICE="${var:graph_title}" MUNIN_GROUP=${var:group} /usr/local/bin/notify_slack_munin
    contact.slack.always_send warning critical
    contact.slack.text ${if:cfields \u000A* CRITICALs:${loop<,>:cfields  ${var:label} is ${var:value} (outside range [${var:crange}])${if:extinfo : ${var:extinfo}}}.}${if:wfields \u000A* WARNINGs:${loop<,>:wfields  ${var:label} is ${var:value} (outside range [${var:wrange}])${if:extinfo : ${var:extinfo}}}.}${if:ufields \u000A* UNKNOWNs:${loop<,>:ufields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}${if:fofields \u000A* OKs:${loop<,>:fofields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}

在這些行的上方，定義了可以正常工作的節點和目錄。 但是通知不會發出。 您有什么可能的想法嗎？

Answer 1

我只是使用了最初在gist上找到的相同腳本，並且在修復了兩個小錯誤后就可以使用它：

• 確保將聯系人放在主機樹之前的配置中。 我將其放在配置文件的末尾，直到將其移至放置示例觸點的位置時才調用它
• 確保Munin配置中的命令使用完整的文件名，因此，如果將腳本放在/usr/local/bin/notify_slack_munin然后檢查文件上是否沒有文件擴展名

如《 Munin指南》中所述，請觀看munin-limits.log以查看發生了什么。

最后說明，如果您有contact.slack.always_send warning critical ，它將重復發送通知，而不僅僅是嚴重性更改。

作為參考（如果要點鏈接制動），以下調用Slack Webhook的腳本（為澄清起見進行了稍微修改）：

#!/bin/bash

# Slack notification script for Munin
# Mark Matienzo (@anarchivist)
# https://gist.github.com/anarchivist/58a905515b2eb2b42fe6
#
# To use:
# 1) Create a new incoming webhook for Slack
# 2) Edit the configuration variables that start with "SLACK_" below
# 3) Add the following to your munin configuration before the host tree
#    in the part where sample contacts are listed:
#
# # -- Slack contact configuration 
# # notify_slack_munin.sh is the full file name
# contact.slack.command MUNIN_SERVICESTATE="${var:worst}" MUNIN_HOST="${var:host}" MUNIN_SERVICE="${var:graph_title}" MUNIN_GROUP=${var:group} /usr/local/bin/notify_slack_munin.sh
# # This line will spam Slack with notifications even if no state change happens
# contact.slack.always_send warning critical
# # note: This has to be on one line for munin to parse properly
# contact.slack.text ${if:cfields \u000A* CRITICALs:${loop<,>:cfields  ${var:label} is ${var:value} (outside range [${var:crange}])${if:extinfo : ${var:extinfo}}}.}${if:wfields \u000A* WARNINGs:${loop<,>:wfields  ${var:label} is ${var:value} (outside range [${var:wrange}])${if:extinfo : ${var:extinfo}}}.}${if:ufields \u000A* UNKNOWNs:${loop<,>:ufields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}${if:fofields \u000A* OKs:${loop<,>:fofields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}


SLACK_CHANNEL="#insert-your-channel"
SLACK_WEBHOOK_URL="https://hooks.slack.com/services/insert/your/hookURL"
SLACK_USERNAME="munin"
SLACK_ICON_EMOJI=":munin:"

# If you want to test the script, you may have to comment this out to avoid hanging console
input=`cat`

#Set the message icon based on service state
if [ "$MUNIN_SERVICESTATE" = "CRITICAL" ]
then
    ICON=":exclamation:"
    COLOR="danger"
elif [ "$MUNIN_SERVICESTATE" = "WARNING" ]
then
    ICON=":warning:"
    COLOR="warning"
elif [ "$MUNIN_SERVICESTATE" = "ok" ]
then
    ICON=":white_check_mark:"
    COLOR="good"
elif [ "$MUNIN_SERVICESTATE" = "OK" ]
then
    ICON=":white_check_mark:"
    COLOR="good"
elif [ "$MUNIN_SERVICESTATE" = "UNKNOWN" ]
then
    ICON=":question:"
    COLOR="#00CCCC"
else
    ICON=":white_medium_square:"
    COLOR="#CCCCCC"
fi

# Generate the JSON payload
PAYLOAD="{\"channel\": \"${SLACK_CHANNEL}\", \"username\": \"${SLACK_USERNAME}\", \"icon_emoji\": \"${SLACK_ICON_EMOJI}\", \"attachments\": [{\"color\": \"${COLOR}\", \"fallback\": \"Munin alert - ${MUNIN_SERVICESTATE}: ${MUNIN_SERVICE} on ${MUNIN_HOST}\", \"pretext\": \"${ICON} Munin alert - ${MUNIN_SERVICESTATE}: ${MUNIN_SERVICE} on ${MUNIN_HOST} in ${MUNIN_GROUP} - <http://central/munin/|View Munin>\", \"fields\": [{\"title\": \"Severity\", \"value\": \"${MUNIN_SERVICESTATE}\", \"short\": \"true\"}, {\"title\": \"Service\", \"value\": \"${MUNIN_SERVICE}\", \"short\": \"true\"}, {\"title\": \"Host\", \"value\": \"${MUNIN_HOST}\", \"short\": \"true\"}, {\"title\": \"Current Values\", \"value\": \"${input}\", \"short\": \"false\"}]}]}"

#Send message to Slack
curl -sX POST -o /dev/null --data "payload=${PAYLOAD}" $SLACK_WEBHOOK_URL 2>&1