==== Process Uptime ====
Find the process ID of the master (parent process), then:
<sxh bash>
ls -ld /proc/3380
</sxh>
Output looks like:
<sxh bash>
dr-xr-xr-x 8 root root 0 Nov 12 23:05 /proc/3380
</sxh>
or
<sxh bash>
ps -eo user,pid,cmd,etime,ppid | grep http
</sxh>
<sxh bash>
ps -eo user,pid,cmd,etime,ppid | grep service
</sxh>
Show JUST the master process:
<sxh  bash>
ps -eo user,pid,cmd,etime,ppid | grep -v grep | grep http | grep root
</sxh>

Output is simlar:
<sxh bash>
 3380 nginx: master process /usr/  1-02:50:02
 8543 nginx: worker process          02:50:10
 8544 nginx: worker process          02:50:10
 8545 nginx: worker process          02:50:10
 8546 nginx: worker process          02:50:10
 8547 nginx: worker process          02:50:10
 8548 nginx: worker process          02:50:10
 8549 nginx: worker process          02:50:10
 8550 nginx: worker process          02:50:10
</sxh>

The bit we are interested in is the master process:
<sxh bash>
 3380 nginx: master process /usr/  1-02:50:02
</sxh>
This represents 1 days, 2 hours, 50 mins and 2 seconds
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==== Server uptime ====
<sxh bash>
w
</sxh>
<sxh bash>
uptime
</sxh>
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==== Apache uptime ====
\\
CentOS
<sxh bash>
service httpd fullstatus
</sxh>

Ubuntu
<sxh bash>
apache2ctl fullstatus
</sxh>
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Sometimes the correct packages are not installed to run these commands
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Alternative:
<sxh bash>
grep -i resuming /var/log/httpd/error.log
</sxh>
<sxh bash>
grep -i resuming /var/log/apache2/error.log
</sxh>
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==== mysql uptime ====
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You can use any of the following commands
<sxh bash>
mysqladmin  version | grep -i uptime
</sxh>
or
<sxh bash>
SHOW GLOBAL STATUS LIKE 'Uptime';
</sxh>

or
<sxh bash>
mysql -e 'SHOW GLOBAL STATUS LIKE "Uptime"' | grep ''[[:digit:]]'' | awk '{ print $2 / 60 / 60 / 24 " days"}'
</sxh>