jacmkno · October 3, 2022 18:22 · Apr 19, 2016 · Apr 19, 2016 · Feb 26, 2016 · Feb 26, 2016
diff --git a/healthcheck.sh b/healthcheck.sh
@@ -30,7 +30,7 @@ do
   do
     ans=`curl -is -m $CURL_TIMEOUT "$PROTOCOL://$host"|tr -d "\n"|grep -e "$TEST_EXPRESSION"|wc -l`
     echo $host:$ans >> /tmp/healthchecks
-    errorsCnt=`grep "$host" /tmp/healthchecks|tail -n $MAX_ERRORS|grep ":0"|wc -l`
+    errorsCnt=`tr [:space:] '\n' < /tmp/healthchecks|grep "$host"|tail -n $MAX_ERRORS|grep ":0"|wc -l`
     let serverDown=errorsCnt/MAX_ERRORS
     oldStatus=`cat /tmp/health.$host`
     status="$host is down? $serverDown"

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -21,7 +21,7 @@ PROTOCOL='http' # All servers will be tested with HTTP protocol on port 80
 let MIN_LINES=HOSTS_COUNT*MAX_ERRORS*5
 let MAX_TIME=`date +%s`+SCRIPT_DURATION-CURL_TIMEOUT-SLEEP_SECS
 
-last_lines=`tail -n $MIN_LINES /tmp/healthchecks`
+last_lines=`tr [:space:] '\n' < /tmp/healthchecks|grep \.|tail -n $MIN_LINES`
 echo $last_lines > /tmp/healthchecks
 
 while [ `date +%s` -lt $MAX_TIME ]

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -12,7 +12,7 @@ NGINX_CONF=/etc/nginx/nginx.conf
 #Expression used in grep to accept a proper response. Server response is stripped from linebreaks and the response headers are included at the begining
 TEST_EXPRESSION='HTTP/1.1 200 OK.*region-footer'
 
-SCRIPT_DURATION=60 # Keep calling .
+SCRIPT_DURATION=60 # Keep sending proves until this.
 MAX_ERRORS=3 # Flag server as down if the last MAX_ERRORS tests are all errors
 CURL_TIMEOUT=2 # Maximum time culr will wait for an answer
 SLEEP_SECS=2 # Wait this number of seconds after each prove
@@ -56,6 +56,10 @@ do
     fi
     #echo "DEBUG INFO: $status, errors: $errorsCnt"
     echo $status > /tmp/health.$host
+    if [ `date +%s` -gt $MAX_TIME ]
+    then
+      exit 1;
+    fi
     sleep $SLEEP_SECS
   done
 done
diff --git a/healthcheck.sh b/healthcheck.sh
@@ -7,7 +7,7 @@ HOSTS=(201.208.65.152 46.56.115.234 42.79.216.211)
 HOSTS_COUNT=3 # Number of hosts in the array
 MAIL_SUBJECT='ACTIVISUAL - Health check status change'
 MAIL_TO='webmaster@website.net'
-NGINX_CONF=nginx.conf
+NGINX_CONF=/etc/nginx/nginx.conf
 
 #Expression used in grep to accept a proper response. Server response is stripped from linebreaks and the response headers are included at the begining
 TEST_EXPRESSION='HTTP/1.1 200 OK.*region-footer'

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -56,6 +56,6 @@ do
     fi
     #echo "DEBUG INFO: $status, errors: $errorsCnt"
     echo $status > /tmp/health.$host
-    sleep $EXTRA_SECS
+    sleep $SLEEP_SECS
   done
 done
diff --git a/healthcheck.sh b/healthcheck.sh
@@ -12,18 +12,20 @@ NGINX_CONF=nginx.conf
 #Expression used in grep to accept a proper response. Server response is stripped from linebreaks and the response headers are included at the begining
 TEST_EXPRESSION='HTTP/1.1 200 OK.*region-footer'
 
-SCRIPT_CRONSECS=120 # Calculate repetitions to take this ammount of time. Should equal your crontab setup.
-CURL_TIMEOUT=2 # Maximum time culr will wait for an answer
-EXTRA_SECS=2 # Wait this number of seconds after each prove
+SCRIPT_DURATION=60 # Keep calling .
 MAX_ERRORS=3 # Flag server as down if the last MAX_ERRORS tests are all errors
+CURL_TIMEOUT=2 # Maximum time culr will wait for an answer
+SLEEP_SECS=2 # Wait this number of seconds after each prove
 PROTOCOL='http' # All servers will be tested with HTTP protocol on port 80
 
-let REPEAT="SCRIPT_CRONSECS/((CURL_TIMEOUT+EXTRA_SECS)*HOSTS_COUNT) - 1"
+let MIN_LINES=HOSTS_COUNT*MAX_ERRORS*5
+let MAX_TIME=`date +%s`+SCRIPT_DURATION-CURL_TIMEOUT-SLEEP_SECS
 
-last_lines=`tail -n 100 /tmp/healthchecks`
+last_lines=`tail -n $MIN_LINES /tmp/healthchecks`
 echo $last_lines > /tmp/healthchecks
 
-for i in `seq $REPEAT`; do
+while [ `date +%s` -lt $MAX_TIME ]
+do
   for host in "${HOSTS[@]}"
   do
     ans=`curl -is -m $CURL_TIMEOUT "$PROTOCOL://$host"|tr -d "\n"|grep -e "$TEST_EXPRESSION"|wc -l`

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -48,7 +48,7 @@ for i in `seq $REPEAT`; do
           echo "status change: $status, errors: $errorsCnt" | mail -s "$MAIL_SUBJECT" $MAIL_TO
           #echo "DEBUG INFO: status change - $status, errors: $errorsCnt"
           mv /tmp/health.newconf $NGINX_CONF
-          sudo service nginx restart
+          service nginx restart
         fi
       fi
     fi

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -46,13 +46,13 @@ for i in `seq $REPEAT`; do
             sed '/down/! s/'"$host"'\(:[0-9]\+ \| \)/&down /' $NGINX_CONF > /tmp/health.newconf
           fi
           echo "status change: $status, errors: $errorsCnt" | mail -s "$MAIL_SUBJECT" $MAIL_TO
-          echo "status change: $status, errors: $errorsCnt"
+          #echo "DEBUG INFO: status change - $status, errors: $errorsCnt"
           mv /tmp/health.newconf $NGINX_CONF
           sudo service nginx restart
         fi
       fi
     fi
-    echo "$status, errors: $errorsCnt"
+    #echo "DEBUG INFO: $status, errors: $errorsCnt"
     echo $status > /tmp/health.$host
     sleep $EXTRA_SECS
   done

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -9,7 +9,7 @@ MAIL_SUBJECT='ACTIVISUAL - Health check status change'
 MAIL_TO='webmaster@website.net'
 NGINX_CONF=nginx.conf
 
-#Expression used in grep to accept a proper response. Server response y stripped from linebreaks and the response headers are included at the begining
+#Expression used in grep to accept a proper response. Server response is stripped from linebreaks and the response headers are included at the begining
 TEST_EXPRESSION='HTTP/1.1 200 OK.*region-footer'
 
 SCRIPT_CRONSECS=120 # Calculate repetitions to take this ammount of time. Should equal your crontab setup.

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -5,7 +5,7 @@
 
 HOSTS=(201.208.65.152 46.56.115.234 42.79.216.211)
 HOSTS_COUNT=3 # Number of hosts in the array
-MAIL_SUBJECT='HSBNOTICIAS - Health check status change'
+MAIL_SUBJECT='ACTIVISUAL - Health check status change'
 MAIL_TO='webmaster@website.net'
 NGINX_CONF=nginx.conf
 

diff --git a/healthcheck.sh b/healthcheck.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+# By @jacmkno - Activisual S.A.S. - http://activisual.net
+# Script summary
+# This script runs health cehcks in a set of hosts and updates their status on an nginx server
+
+HOSTS=(201.208.65.152 46.56.115.234 42.79.216.211)
+HOSTS_COUNT=3 # Number of hosts in the array
+MAIL_SUBJECT='HSBNOTICIAS - Health check status change'
+MAIL_TO='webmaster@website.net'
+NGINX_CONF=nginx.conf
+
+#Expression used in grep to accept a proper response. Server response y stripped from linebreaks and the response headers are included at the begining
+TEST_EXPRESSION='HTTP/1.1 200 OK.*region-footer'
+
+SCRIPT_CRONSECS=120 # Calculate repetitions to take this ammount of time. Should equal your crontab setup.
+CURL_TIMEOUT=2 # Maximum time culr will wait for an answer
+EXTRA_SECS=2 # Wait this number of seconds after each prove
+MAX_ERRORS=3 # Flag server as down if the last MAX_ERRORS tests are all errors
+PROTOCOL='http' # All servers will be tested with HTTP protocol on port 80
+
+let REPEAT="SCRIPT_CRONSECS/((CURL_TIMEOUT+EXTRA_SECS)*HOSTS_COUNT) - 1"
+
+last_lines=`tail -n 100 /tmp/healthchecks`
+echo $last_lines > /tmp/healthchecks
+
+for i in `seq $REPEAT`; do
+  for host in "${HOSTS[@]}"
+  do
+    ans=`curl -is -m $CURL_TIMEOUT "$PROTOCOL://$host"|tr -d "\n"|grep -e "$TEST_EXPRESSION"|wc -l`
+    echo $host:$ans >> /tmp/healthchecks
+    errorsCnt=`grep "$host" /tmp/healthchecks|tail -n $MAX_ERRORS|grep ":0"|wc -l`
+    let serverDown=errorsCnt/MAX_ERRORS
+    oldStatus=`cat /tmp/health.$host`
+    status="$host is down? $serverDown"
+    if [ -n "$oldStatus" ]
+    then
+      if [ "$oldStatus" != "$status" ]
+      then
+        if [ "$serverDown" -eq 0 ] && [ "$errorsCnt" -gt 0 ]; then
+          status="$oldStatus"
+        else
+          if [ "$serverDown" -eq 0 ]
+          then
+            sed 's/'"$host"'\(:[0-9]\+ \| \)down /'$host'\1/' $NGINX_CONF > /tmp/health.newconf
+          else
+            sed '/down/! s/'"$host"'\(:[0-9]\+ \| \)/&down /' $NGINX_CONF > /tmp/health.newconf
+          fi
+          echo "status change: $status, errors: $errorsCnt" | mail -s "$MAIL_SUBJECT" $MAIL_TO
+          echo "status change: $status, errors: $errorsCnt"
+          mv /tmp/health.newconf $NGINX_CONF
+          sudo service nginx restart
+        fi
+      fi
+    fi
+    echo "$status, errors: $errorsCnt"
+    echo $status > /tmp/health.$host
+    sleep $EXTRA_SECS
+  done
+done
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