Hi Team,
When i am running the below query manually it is giving me the right output
export PATH=/usr/sbin:/usr/bin:/sbin:/bin:$PATH
ADMIN=abc@abc.com
CPU_HIGH=`sar|awk '{print $9}'|sort -n|head -5|sed -n 5p`
CPU_MAX=`echo "scale=3; 100-$CPU_HIGH" | bc`
CPU_LOW=`sar|awk '{print $9}'|sort -n|tail -1`
CPU_MIN=`echo "scale=3; 100-$CPU_LOW" | bc`
MEM_MAX=`cat /root/admin_files/server_monitor/datewise_monitor/ram_monitor-$(date +"%d-%B-%Y")|awk '{print $2'}|sort -n|tail -1`
MEM_MIN=`cat /root/admin_files/server_monitor/datewise_monitor/ram_monitor-$(date +"%d-%B-%Y")|awk '{print $2'}|sort -n|head -1`
now=`date +-%Y-%m-%d-%H:%M:%S`
file=utilization_$now.log
filename=/root/admin_files/server_monitor/datewise_monitor/$file
echo "$(date): Memory Utilization Report for server $(hostname) is" >>$filename
echo "-----------------------------------" >>$filename
echo " " >>$filename
echo "CPU Max Utilization : $CPU_MAX % " >>$filename
echo "CPU Min Utilization : $CPU_MIN % " >>$filename
echo " " >>$filename
echo "Max Ram Utilization : $MEM_MAX % " >>$filename
echo "Min Ram Utilization : $MEM_MIN % " >>$filename
cat $filename| mail -s "$(date +"%d-%B-%Y"): CPU & Memory Summarization Report for server $(hostname) : "$(ifconfig eth0 | sed -n '/inet /{s/.*addr://;s/ .*//;p}')" " $ADMIN
sar >> /root/admin_files/server_monitor/datewise_monitor/cpu_monitor$(date +"-%d-%B-%Y").txt
sar -r >>/root/admin_files/server_monitor/datewise_monitor/memory_monitor$(date +"-%d-%B-%Y").txt
Output:
Mon Mar 17 14:47:28 GMT 2014: Memory Utilization Report for server mmv0pfecdel0070 is
-----------------------------------
CPU Max Utilization : 7.29 %
CPU Min Utilization : .07 %
Max Ram Utilization : 12.000 %
Min Ram Utilization : 11.800 %
But when i am running the script through cronjob it is giving me the below output:
Mon Mar 17 15:02:01 GMT 2014: Memory Utilization Report for server mmv0pfecdel0070 is
-----------------------------------
CPU Max Utilization : %
CPU Min Utilization : %
Max Ram Utilization : 12.000 %
Min Ram Utilization : 11.800 %
Please assist me in this.
This seems to be an - albeit hidden - case of Cron Problem Number One . I suppose "sar" is not in the PATH, because all the other utilities you used are, as far as i could see.
Btw., it doesn't help you to add the old PATH:
export PATH=/usr/sbin:/usr/bin:/sbin:/bin:$PATH
because "$PATH" is empty when a cron-script starts.
I hope this helps.
bakunin
Even after adding the sar path in the export does not resolve the issue. I have removed $PATH from the end.
Still getting the same error. Please assist.
This is the entry in the cron tab
41 15 * * * /root/admin_files/server_monitor/server_monitor.sh
RudiC
March 17, 2014, 12:25pm
5
Please set the xtrace option at the top of the script and post the execution log.
Hi have added the option
set -o xtrace.
But i am still getting the same output.
Yoda
March 17, 2014, 1:00pm
7
Instead of defining PATH, I would suggest using absolute path for all utilities located other than under /bin
CPU_MAX=`echo "scale=3; 100-$CPU_HIGH" | /usr/bin/bc`
This is just an example, you have to find the absolute path for each utilities using which command and replace.
RudiC
March 17, 2014, 1:12pm
8
You have to capture stderr in a file to see the log.
Please find the output
++ export PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/sar
++ PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/sar
++ ADMIN=abc@abc.com
+++ /usr/bin/sar
+++ /usr/bin/awk '{print $9}'
+++ /bin/sort -n
+++ /usr/bin/head -5
+++ /bin/sed -n 5p
++ CPU_HIGH=
+++ echo 'scale=3; 100-'
+++ /usr/bin/bc
(standard_in) 2: parse error
++ CPU_MAX=
+++ /usr/bin/sar
+++ awk '{print $9}'
+++ sort -n
+++ tail -1
++ CPU_LOW=
+++ echo 'scale=3; 100-'
+++ /usr/bin/bc
(standard_in) 2: parse error
++ CPU_MIN=
+++ awk '{print $2}'
++++ date +%d-%B-%Y
+++ sort -n
+++ tail -1
+++ cat /root/admin_files/server_monitor/datewise_monitor/ram_monitor-17-March-2014
++ MEM_MAX=12.200
+++ awk '{print $2}'
++++ date +%d-%B-%Y
+++ sort -n
+++ head -1
+++ cat /root/admin_files/server_monitor/datewise_monitor/ram_monitor-17-March-2014
++ MEM_MIN=11.800
+++ date +-%Y-%m-%d-%H:%M:%S
++ now=-2014-03-17-18:20:01
++ file=utilization_-2014-03-17-18:20:01.log
++ filename=/root/admin_files/server_monitor/datewise_monitor/utilization_-2014-03-17-18:20:01.log
+++ date
+++ hostname
++ echo 'Mon Mar 17 18:20:01 GMT 2014: Memory Utilization Report for server mmv0pfecdel0070 is'
++ echo -----------------------------------
++ echo ' '
++ echo 'CPU Max Utilization : % '
++ echo 'CPU Min Utilization : % '
++ echo ' '
++ echo 'Max Ram Utilization : 12.200 % '
++ echo 'Min Ram Utilization : 11.800 % '
++ cat /root/admin_files/server_monitor/datewise_monitor/utilization_-2014-03-17-18:20:01.log
+++ date +%d-%B-%Y
+++ hostname
+++ ifconfig eth0
+++ sed -n '/inet /{s/.*addr://;s/ .*//;p}'
++ mail -s '17-March-2014: CPU & Memory Summarization Report for server mmv0pfecdel0070 : 10.129.192.198 ' abc@abc.com
++ sar
+++ date +-%d-%B-%Y
++ sar -r
+++ date +-%d-%B-%Y
---------- Post updated at 01:45 PM ---------- Previous update was at 01:44 PM ----------
The same code is working when running manually.
---------- Post updated at 02:34 PM ---------- Previous update was at 01:45 PM ----------
i guess there is an issue when using bc in the crontab.
Yoda
March 17, 2014, 3:52pm
10
It is not the problem with bc .
The problem is sar output is different when running from cron and from command line.
From command line:
12:00:01 AM CPU %user %nice %system %iowait %steal %idle
12:10:01 AM all 51.22 0.01 6.16 0.23 0.00 42.37
From crontab:
00:00:01 CPU %user %nice %system %iowait %steal %idle
00:10:01 all 51.22 0.01 6.16 0.23 0.00 42.37
Set LC_TIME before running sar to display AM/PM data:
LC_TIME=en_US.UTF-8 sar
One question :
1) what if instead of awk'{print $9}' i try using awk'{print $8}'
2) Will adding the line
Yoda
March 17, 2014, 4:05pm
12
Yes, you can try awk'{print $8}' instead. But then it will not work from command line.
So the best approach is to set LC_TIME and it will work either way.
so i need to add LC_TIME in the beginning of the script??
Yoda
March 17, 2014, 4:31pm
14
Yes
export LC_TIME=en_US.UTF-8