Apache server still running but user can not connect website, after "sudo apachectl restart" user can connect website, what'r wrong? [on hold]

Posted by Tinyfool on Server Fault See other posts from Server Fault or by Tinyfool
Published on 2014-08-23T15:27:14Z Indexed on 2014/08/25 4:22 UTC
Read the original article Hit count: 172

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My website is http://ourcoders.com/, recently I found sometime user report can not connect to my website, but I ssh to server, I found Apache still running, like this:

[email protected]:~# ps aux|grep apache
root       873  0.0  1.3 290496 13528 ?        Ss   Aug18   0:28 /usr/sbin/apache2 -k start
www-data  3490  0.0  1.8 299004 18764 ?        S    Aug21   0:01 /usr/sbin/apache2 -k start
www-data  3612  0.0  1.5 296008 15540 ?        S    Aug21   0:03 /usr/sbin/apache2 -k start
www-data  3860  0.0  1.5 296636 16268 ?        S    Aug21   0:00 /usr/sbin/apache2 -k start
www-data  3913  0.0  1.2 295468 13084 ?        S    Aug21   0:00 /usr/sbin/apache2 -k start
www-data  3931  0.0  1.7 298488 18228 ?        S    16:02   0:01 /usr/sbin/apache2 -k start
www-data  3938  0.0  1.9 299128 19724 ?        S    16:02   0:02 /usr/sbin/apache2 -k start
www-data  4465  0.0  1.6 296688 16404 ?        S    Aug21   0:00 /usr/sbin/apache2 -k start
www-data  5075  0.0  1.2 295468 13044 ?        S    16:16   0:00 /usr/sbin/apache2 -k start
www-data  5153  0.0  1.5 295880 15612 ?        S    16:17   0:00 /usr/sbin/apache2 -k start
www-data  5770  0.0  1.5 296608 16016 ?        S    16:30   0:00 /usr/sbin/apache2 -k start
www-data  5773  0.0  1.6 296948 16640 ?        S    16:30   0:00 /usr/sbin/apache2 -k start
www-data  5816  0.0  1.6 297216 16976 ?        S    16:31   0:01 /usr/sbin/apache2 -k start
www-data  5918  0.0  1.7 298228 17820 ?        S    16:33   0:01 /usr/sbin/apache2 -k start
www-data  6023  0.0  1.9 299864 19840 ?        S    16:35   0:13 /usr/sbin/apache2 -k start
www-data  6073  0.0  1.7 298480 18120 ?        S    16:36   0:02 /usr/sbin/apache2 -k start
www-data  6088  0.0  2.0 300488 21008 ?        S    16:36   0:12 /usr/sbin/apache2 -k start
www-data  6114  0.0  1.7 298548 18268 ?        S    16:37   0:12 /usr/sbin/apache2 -k start
www-data  6134  0.0  1.6 296688 16532 ?        S    16:37   0:04 /usr/sbin/apache2 -k start
www-data  6193  0.0  1.7 297908 17420 ?        S    16:38   0:08 /usr/sbin/apache2 -k start
www-data  6821  0.0  1.8 299556 19072 ?        S    16:43   0:11 /usr/sbin/apache2 -k start
www-data  7058  0.0  1.7 298676 18204 ?        S    16:48   0:10 /usr/sbin/apache2 -k start
www-data  7065  0.0  1.8 299028 18868 ?        S    16:48   0:11 /usr/sbin/apache2 -k start
www-data  7084  0.0  1.8 299508 19020 ?        S    16:48   0:11 /usr/sbin/apache2 -k start
www-data  7221  0.0  1.8 299160 18768 ?        S    16:51   0:09 /usr/sbin/apache2 -k start
www-data 11453  0.0  1.7 298484 18256 ?        S    09:39   0:02 /usr/sbin/apache2 -k start
root     26324  0.0  0.0   8084   920 pts/0    S+   22:52   0:00 grep --color=auto apache
root     28517  0.0  0.0   4404   612 ?        S    Aug21   0:00 /bin/sh -c /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28518  0.0  0.0   4404   616 ?        S    Aug21   0:00 /bin/sh -c /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28519  0.0  0.0   4404   612 ?        S    Aug21   0:00 /bin/sh -c /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28520  0.0  0.0   4404   616 ?        S    Aug21   0:00 /bin/sh -c /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28521  0.0  0.0   4312   552 ?        S    Aug21   0:00 /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28522  0.0  0.0   4308   548 ?        S    Aug21   0:07 /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28523  0.0  0.0   4176   352 ?        S    Aug21   0:00 /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log
root     28524  0.0  0.0   4180   356 ?        S    Aug21   0:00 /usr/sbin/cronolog /var/log/apache2/cocoa/%Y/%m/access-%Y-%m-%d.log

Today's only error log is blow.

[Sat Aug 23 22:52:47 2014] [notice] SIGHUP received.  Attempting to restart
[Sat Aug 23 22:52:47 2014] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.13 with Suhosin-Patch configured -- resuming normal operations

traffic information:

cat access-2014-08-23.log | cut -d " " -f4 |cut -d":" -f2 |sort|uniq -c |sort -nr
   5692 14
   5291 15
   5083 16
   4723 23
   4463 12
   4057 17
   4011 11
   3926 13
   3852 10
   3187 05
   3176 09
   3055 06
   2790 07
   2672 00
   2608 02
   2591 01
   2577 04
   2514 03
   2497 08
    707 22
     88 18

After I use "sudo apachectl restart", user can connect my website.

So I want to know? What is the problem?

And if "sudo apachectl restart" is needed, can I automate run this command?

Today this kind struts appear again, and I run netstat -a -n

Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN     
tcp        0      0 115.28.146.116:80       125.39.208.120:50708    SYN_RECV   
tcp        0      0 115.28.146.116:80       125.39.208.158:50278    SYN_RECV   
tcp        0      0 115.28.146.116:80       220.173.142.152:23320   SYN_RECV   
tcp        0      0 115.28.146.116:80       60.173.247.132:52851    SYN_RECV   
tcp        0      0 115.28.146.116:80       125.39.208.158:39397    SYN_RECV   
tcp        0      0 115.28.146.116:80       125.39.208.158:56894    SYN_RECV   
tcp        0      0 115.28.146.116:80       183.129.174.2:21291     SYN_RECV   
tcp        0      0 115.28.146.116:80       125.39.208.120:44499    SYN_RECV   
tcp        0      0 115.28.146.116:80       125.39.208.120:34017    SYN_RECV   
tcp        0      0 115.28.146.116:80       124.65.50.210:3774      SYN_RECV   
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:15770         0.0.0.0:*               LISTEN     
tcp        1      0 115.28.146.116:80       14.127.65.219:61633     CLOSE_WAIT 
tcp      305      0 115.28.146.116:80       125.39.208.120:37593    ESTABLISHED
tcp        0      0 10.144.142.201:52866    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 10.144.142.201:52873    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 10.144.142.201:52868    10.146.6.61:3306        TIME_WAIT  
tcp      343      0 115.28.146.116:80       182.118.20.215:50709    ESTABLISHED
tcp        0      0 115.28.146.116:54784    173.194.127.243:80      ESTABLISHED
tcp        1      0 115.28.146.116:80       116.192.2.185:41253     CLOSE_WAIT 
tcp        0      0 10.144.142.201:52876    10.146.6.61:3306        ESTABLISHED
tcp      559      0 115.28.146.116:80       218.241.144.114:54501   ESTABLISHED
tcp      376      0 115.28.146.116:80       116.213.196.119:50604   CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       113.36.238.28:59339     CLOSE_WAIT 
tcp      214      0 115.28.146.116:80       142.4.215.40:34443      ESTABLISHED
tcp        0      0 115.28.146.116:48635    115.28.146.116:80       ESTABLISHED
tcp      187      0 115.28.146.116:80       115.28.146.116:48635    ESTABLISHED
tcp        0      0 10.144.142.201:52853    10.146.6.61:3306        TIME_WAIT  
tcp      594      0 115.28.146.116:80       183.129.174.2:7090      CLOSE_WAIT 
tcp        0      0 10.144.142.201:52874    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 115.28.146.116:80       182.118.20.166:44081    TIME_WAIT  
tcp        1      0 115.28.146.116:80       113.36.238.28:59028     CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       14.127.65.219:61665     CLOSE_WAIT 
tcp        0      0 10.144.142.201:52860    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 10.144.142.201:46983    10.146.6.61:3306        ESTABLISHED
tcp        0   2290 115.28.146.116:80       14.154.179.243:41049    FIN_WAIT1  
tcp        0      0 10.144.142.201:42900    10.146.6.61:3306        ESTABLISHED
tcp      571      0 115.28.146.116:80       220.173.142.152:23295   CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       113.36.238.28:59337     CLOSE_WAIT 
tcp      438      0 115.28.146.116:80       42.120.74.202:31567     CLOSE_WAIT 
tcp        0      0 115.28.146.116:80       113.36.238.28:59498     ESTABLISHED
tcp      259      0 115.28.146.116:80       66.249.65.56:36739      ESTABLISHED
tcp        0      0 115.28.146.116:80       113.36.238.28:59341     ESTABLISHED
tcp        0      0 115.28.146.116:80       142.4.215.40:34267      FIN_WAIT2  
tcp      799      0 115.28.146.116:80       180.173.88.1:52779      ESTABLISHED
tcp        0      0 115.28.146.116:80       117.136.25.132:25207    FIN_WAIT2  
tcp        0      0 115.28.146.116:80       220.181.108.186:42540   TIME_WAIT  
tcp        0      0 10.144.142.201:59902    10.242.174.13:80        TIME_WAIT  
tcp        0   1820 115.28.146.116:80       218.22.140.90:39266     LAST_ACK   
tcp        0      0 115.28.146.116:80       66.249.65.64:56977      TIME_WAIT  
tcp      669      0 115.28.146.116:80       83.251.90.61:49664      ESTABLISHED
tcp        0      0 10.144.142.201:52872    10.146.6.61:3306        TIME_WAIT  
tcp      233      0 115.28.146.116:80       54.202.88.0:43398       CLOSE_WAIT 
tcp      479      0 115.28.146.116:80       65.49.44.149:25739      ESTABLISHED
tcp      378      0 115.28.146.116:80       148.251.124.173:39313   CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       14.127.65.219:61697     CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       49.4.158.2:52986        CLOSE_WAIT 
tcp      769      0 115.28.146.116:80       14.127.65.219:61537     ESTABLISHED
tcp        0      0 10.144.142.201:52859    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 10.144.142.201:55734    10.164.2.163:9200       TIME_WAIT  
tcp      563      0 115.28.146.116:80       202.55.20.10:22577      CLOSE_WAIT 
tcp      194      0 115.28.146.116:80       37.58.100.165:50908     CLOSE_WAIT 
tcp      791      0 115.28.146.116:80       116.192.2.185:45628     ESTABLISHED
tcp      709      0 115.28.146.116:80       113.116.61.178:65209    ESTABLISHED
tcp      706      0 115.28.146.116:80       183.227.44.237:54519    ESTABLISHED
tcp      301      0 115.28.146.116:80       118.198.243.127:31180   ESTABLISHED
tcp        0      0 10.144.142.201:55721    10.164.2.163:9200       TIME_WAIT  
tcp        0      0 10.144.142.201:55726    10.164.2.163:9200       TIME_WAIT  
tcp        0      0 10.144.142.201:55723    10.164.2.163:9200       TIME_WAIT  
tcp      681      0 115.28.146.116:80       83.251.90.61:49662      ESTABLISHED
tcp        0      0 115.28.146.116:80       83.251.90.61:65274      TIME_WAIT  
tcp        1      0 115.28.146.116:80       113.36.238.28:59022     CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       180.173.88.1:52781      CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       113.36.238.28:59037     CLOSE_WAIT 
tcp        0      0 10.144.142.201:55728    10.164.2.163:9200       TIME_WAIT  
tcp      231      0 115.28.146.116:37596    110.75.102.62:80        CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       14.127.65.219:61569     CLOSE_WAIT 
tcp        0      0 10.144.142.201:51310    10.146.6.61:3306        ESTABLISHED
tcp      299      0 115.28.146.116:80       123.125.71.16:36281     ESTABLISHED
tcp        0      0 115.28.146.116:48620    115.28.146.116:80       ESTABLISHED
tcp        1      0 115.28.146.116:80       183.227.44.237:54520    CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       113.36.238.28:59026     CLOSE_WAIT 
tcp      479      0 115.28.146.116:80       65.49.44.149:5490       ESTABLISHED
tcp      665      0 115.28.146.116:80       83.251.90.61:49663      ESTABLISHED
tcp        0      0 115.28.146.116:53744    173.194.127.147:80      ESTABLISHED
tcp        1      0 115.28.146.116:80       113.36.238.28:59023     CLOSE_WAIT 
tcp        0      0 115.28.146.116:22       116.192.2.185:34205     ESTABLISHED
tcp      333      0 115.28.146.116:80       149.174.113.111:54338   CLOSE_WAIT 
tcp        0      0 10.144.142.201:52861    10.146.6.61:3306        TIME_WAIT  
tcp        0      0 10.144.142.201:52863    10.146.6.61:3306        TIME_WAIT  
tcp        1      0 115.28.146.116:80       116.192.2.185:43272     CLOSE_WAIT 
tcp      767      0 115.28.146.116:80       49.4.158.2:52947        CLOSE_WAIT 
tcp      668      0 115.28.146.116:80       83.251.90.61:49665      ESTABLISHED
tcp      642      0 115.28.146.116:80       222.78.185.50:55788     ESTABLISHED
tcp      710      0 115.28.146.116:80       113.116.61.178:65264    ESTABLISHED
tcp      284      0 115.28.146.116:80       157.55.39.243:65185     ESTABLISHED
tcp      450      0 115.28.146.116:80       65.49.44.149:55496      ESTABLISHED
tcp        1      0 115.28.146.116:80       116.192.2.185:36629     CLOSE_WAIT 
tcp      233      0 115.28.146.116:80       54.202.88.0:42424       CLOSE_WAIT 
tcp      187      0 115.28.146.116:80       115.28.146.116:48620    ESTABLISHED
tcp        1      0 115.28.146.116:80       14.127.65.219:61601     CLOSE_WAIT 
tcp      776      0 115.28.146.116:80       202.118.253.102:64883   CLOSE_WAIT 
tcp      841      0 115.28.146.116:80       37.228.105.28:49472     ESTABLISHED
tcp      787      0 115.28.146.116:80       112.65.226.198:52192    ESTABLISHED
tcp        0      0 10.144.142.201:55717    10.164.2.163:9200       TIME_WAIT  
tcp      233      0 115.28.146.116:80       54.202.88.0:42855       CLOSE_WAIT 
tcp      379      0 115.28.146.116:80       101.226.166.219:2322    ESTABLISHED
tcp        0      0 115.28.146.116:80       183.60.212.152:43063    CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       180.173.88.1:52780      CLOSE_WAIT 
tcp      784      0 115.28.146.116:80       101.95.29.26:63094      ESTABLISHED
tcp      463      0 115.28.146.116:80       65.49.44.149:53876      ESTABLISHED
tcp        1      0 115.28.146.116:80       116.192.2.185:37946     CLOSE_WAIT 
tcp      479      0 115.28.146.116:80       65.49.44.149:41157      ESTABLISHED
tcp        1      0 115.28.146.116:80       113.36.238.28:59036     CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       49.4.158.2:52984        CLOSE_WAIT 
tcp        1      0 115.28.146.116:80       116.192.2.185:38100     CLOSE_WAIT 
tcp        0      0 10.144.142.201:52865    10.146.6.61:3306        TIME_WAIT  
tcp        1      0 115.28.146.116:80       113.36.238.28:59027     CLOSE_WAIT 
tcp        0      0 115.28.146.116:36508    173.194.127.81:80       ESTABLISHED
tcp      210      0 115.28.146.116:80       188.143.232.123:47775   ESTABLISHED
tcp        1      0 115.28.146.116:80       113.36.238.28:59025     CLOSE_WAIT 
tcp        0      0 10.144.142.201:52857    10.146.6.61:3306        TIME_WAIT  
tcp      654      0 115.28.146.116:80       49.4.158.2:52985        ESTABLISHED
tcp        0      0 115.28.146.116:58627    110.75.102.62:80        ESTABLISHED
tcp      782      0 115.28.146.116:80       180.153.219.13:40293    ESTABLISHED
tcp      792      0 115.28.146.116:80       116.192.2.185:48187     CLOSE_WAIT 
tcp6       0      0 :::22                   :::*                    LISTEN     
udp        0      0 115.28.146.116:123      0.0.0.0:*                          
udp        0      0 10.144.142.201:123      0.0.0.0:*                          
udp        0      0 127.0.0.1:123           0.0.0.0:*                          
udp        0      0 0.0.0.0:123             0.0.0.0:*                          
udp6       0      0 :::123                  :::*                               
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   Path
unix  2      [ ACC ]     STREAM     LISTENING     8447     /var/run/mysqld/mysqld.sock
unix  2      [ ACC ]     SEQPACKET  LISTENING     6678     /run/udev/control
unix  2      [ ACC ]     STREAM     LISTENING     6482     @/com/ubuntu/upstart
unix  2      [ ACC ]     STREAM     LISTENING     7543     /var/run/dbus/system_bus_socket
unix  7      [ ]         DGRAM                    7551     /dev/log
unix  2      [ ACC ]     STREAM     LISTENING     7650     /var/run/nscd/socket
unix  2      [ ]         DGRAM                    7156424  
unix  3      [ ]         STREAM     CONNECTED     7156137  /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     7156136  
unix  2      [ ]         DGRAM                    7156135  
unix  2      [ ]         DGRAM                    7155834  
unix  2      [ ]         DGRAM                    9734     
unix  3      [ ]         STREAM     CONNECTED     9151     /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     9150     
unix  3      [ ]         STREAM     CONNECTED     9136     /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     9135     
unix  3      [ ]         STREAM     CONNECTED     9106     /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     9105     
unix  2      [ ]         DGRAM                    9073     
unix  3      [ ]         STREAM     CONNECTED     7575     /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     7574     
unix  3      [ ]         STREAM     CONNECTED     7565     
unix  3      [ ]         STREAM     CONNECTED     7564     
unix  3      [ ]         STREAM     CONNECTED     7332     @/com/ubuntu/upstart
unix  3      [ ]         STREAM     CONNECTED     7330     
unix  3      [ ]         DGRAM                    6712     
unix  3      [ ]         DGRAM                    6711     
unix  3      [ ]         STREAM     CONNECTED     6662     @/com/ubuntu/upstart
unix  3      [ ]         STREAM     CONNECTED     6635     

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