Issue kernel segfaults php-fpm and uc_update errors causing CPU red alert

[iA001]

I keep getting 502 Bad Gateway while trying to update ads in vBulletin. It does not seem to affect any other scripts.

proxy_error_log

# var/www/vhosts/system/domain.com/logs/proxy_error_log

2016/09/15 17:08:32 [error] 28395#0: *4373194 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: my_ip, server: domain.com, request: "POST /admincp/ad.php?do=quickupdate HTTP/1.1", upstream: "fastcgi://unix:///var/www/vhosts/system/domain.com/php-fpm.sock:", host: "www.domain.com", referrer: "http://www.domain.com/admincp/ad.php"

var/log/messages

# /var/log/messages

Sep 15 17:08:32  kernel: php-fpm[28089]: segfault at 7ffdbe057ff8 ip 00000000005fdf12 sp 00007ffdbe058000 error 6 in php-fpm[400000+385000]

Server Info:
CPU Intel(R) Xeon(R) CPU E5-2650L v3 @ 1.80GHz (2 core(s))
Version Plesk v12.5.30_build1205150826.19 os_CentOS 7
OS CentOS Linux 7.2.1511 (Core)


There is another error which is also mentioned here: https://kb.plesk.com/en/129456

# usr/sbin/sw-collectd -T
uc_update: Value too old: name = localhost/df/df-root; value time = 1473958614; last cache update = 1473958614;rrdtool plugin: (rc->last_value = 1473958614) >= (value_time = 1473958614)Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.Exiting normally.rrdtool plugin: Shutting down the queue thread. This may take a while.

# /var/log/messages

sw-collectd: Value too old: name = localhost/df/df-root;
 value time = 1473957820;
 last cache update = 1473957820;
rrdtool plugin: (rc->last_value = 1473957820) >= (value_time = 1473957820)Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.
uc_update: Value too old: name = localhost/df/df-root;
 value time = 1473958120;
 last cache update = 1473958120;
rrdtool plugin: (rc->last_value = 1473958120) >= (value_time = 1473958120)Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.
uc_update: Value too old: name = localhost/df/df-root;
 value time = 1473958420;
 last cache update = 1473958420;
rrdtool plugin: (rc->last_value = 1473958420) >= (value_time = 1473958420)Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.
rrdtool plugin: rrd_update_r (localhost/cpu-0/cpu-idle.rrd) failed: localhost/cpu-0/cpu-idle.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-0/cpu-interrupt.rrd) failed: localhost/cpu-0/cpu-interrupt.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-0/cpu-softirq.rrd) failed: localhost/cpu-0/cpu-softirq.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-0/cpu-steal.rrd) failed: localhost/cpu-0/cpu-steal.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-1/cpu-idle.rrd) failed: localhost/cpu-1/cpu-idle.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-1/cpu-interrupt.rrd) failed: localhost/cpu-1/cpu-interrupt.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/cpu-1/cpu-steal.rrd) failed: localhost/cpu-1/cpu-steal.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)uc_update: Value too old: name = localhost/df/df-root;
 value time = 1473958720;
 last cache update = 1473958720;
rrdtool plugin: (rc->last_value = 1473958720) >= (value_time = 1473958720)Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.
rrdtool plugin: rrd_update_r (localhost/interface/if_octets-eth0.rrd) failed: localhost/interface/if_octets-eth0.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/interface/if_errors-eth0.rrd) failed: localhost/interface/if_errors-eth0.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/interface/if_octets-eth1.rrd) failed: localhost/interface/if_octets-eth1.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/interface/if_packets-eth1.rrd) failed: localhost/interface/if_packets-eth1.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/interface/if_octets-lo.rrd) failed: localhost/interface/if_octets-lo.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/interface/if_errors-lo.rrd) failed: localhost/interface/if_errors-lo.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/memory/memory-used.rrd) failed: localhost/memory/memory-used.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/memory/memory-buffered.rrd) failed: localhost/memory/memory-buffered.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/memory/memory-free.rrd) failed: localhost/memory/memory-free.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/swap/swap-free.rrd) failed: localhost/swap/swap-free.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/swap/swap-cached.rrd) failed: localhost/swap/swap-cached.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/swap/swap_io-out.rrd) failed: localhost/swap/swap_io-out.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes/ps_state-sleeping.rrd) failed: localhost/processes/ps_state-sleeping.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Web/ps_cputime.rrd) failed: localhost/processes-Web/ps_cputime.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Web/ps_pagefaults.rrd) failed: localhost/processes-Web/ps_pagefaults.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Web/ps_disk_ops.rrd) failed: localhost/processes-Web/ps_disk_ops.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-WebProxy/ps_stacksize.rrd) failed: localhost/processes-WebProxy/ps_stacksize.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-WebProxy/ps_cputime.rrd) failed: localhost/processes-WebProxy/ps_cputime.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-WebProxy/ps_disk_ops.rrd) failed: localhost/processes-WebProxy/ps_disk_ops.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Mail/ps_count.rrd) failed: localhost/processes-Mail/ps_count.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Mail/ps_pagefaults.rrd) failed: localhost/processes-Mail/ps_pagefaults.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-Mail/ps_disk_octets.rrd) failed: localhost/processes-Mail/ps_disk_octets.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-MySql/ps_count.rrd) failed: localhost/processes-MySql/ps_count.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-MySql/ps_pagefaults.rrd) failed: localhost/processes-MySql/ps_pagefaults.rrd: illegal attempt to update using time 1473958420 when last update time is 1473958614 (minimum one second step)rrdtool plugin: rrd_update_r (localhost/processes-MySql/ps_disk_octets.rrd) failed: localhost/processes-MySql/ps_disk_octets.rrd:

This second error is causing CPU alert level rise to Red and Plesk is sending an automated email alert to me. It goes back to green automatically after a few minutes.

 

[iA001]

var/log/httpd/error_log

# tail -20 var/log/httpd/error_log

[Thu Sep 15 16:26:05.018363 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for default-server_IP:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.018924 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH02292: Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)
[Thu Sep 15 16:26:05.018975 2016] [jk:warn] [pid 28229:tid 140638628501568] No JkLogFile defined in httpd.conf. Using default /etc/httpd/logs/mod_jk.log
[Thu Sep 15 16:26:05.019024 2016] [jk:warn] [pid 28229:tid 140638628501568] No JkShmFile defined in httpd.conf. Using default /etc/httpd/logs/jk-runtime-status
[Thu Sep 15 16:26:05.066847 2016] [auth_digest:notice] [pid 28229:tid 140638628501568] AH01757: generating secret for digest authentication ...
[Thu Sep 15 16:26:05.067589 2016] [lbmethod_heartbeat:notice] [pid 28229:tid 140638628501568] AH02282: No slotmem from mod_heartmonitor
[Thu Sep 15 16:26:05.069813 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for roundcube.webmail:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.070052 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for roundcube.webmail:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.070252 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for horde.webmail:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.070491 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for horde.webmail:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.070750 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for lists:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.070967 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for default-10_10_0_5:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.071187 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH01909: RSA certificate configured for default-server_IP:443 does NOT include an ID which matches the server name
[Thu Sep 15 16:26:05.072107 2016] [ssl:warn] [pid 28229:tid 140638628501568] AH02292: Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)
[Thu Sep 15 16:26:05.072814 2016] [:notice] [pid 28229:tid 140638628501568] mod_bw : Memory Allocated 0 bytes (each conf takes 48 bytes)
[Thu Sep 15 16:26:05.072830 2016] [:notice] [pid 28229:tid 140638628501568] mod_bw : Version 0.92 - Initialized [0 Confs]
[Thu Sep 15 16:26:05.074327 2016] [jk:warn] [pid 28229:tid 140638628501568] No JkLogFile defined in httpd.conf. Using default /etc/httpd/logs/mod_jk.log
[Thu Sep 15 16:26:05.074481 2016] [jk:warn] [pid 28229:tid 140638628501568] No JkShmFile defined in httpd.conf. Using default /etc/httpd/logs/jk-runtime-status
[Thu Sep 15 16:26:05.079696 2016] [mpm_event:notice] [pid 28229:tid 140638628501568] AH00489: Apache/2.4.6 (CentOS) OpenSSL/1.0.1e-fips mod_fcgid/2.3.9 mod_jk/1.2.40 mod_perl/2.0.9-dev Perl/v5.16.3 configured -- resuming normal operations
[Thu Sep 15 16:26:05.079728 2016] [core:notice] [pid 28229:tid 140638628501568] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND'

 

[iA001]

There are more errors in var/www/vhosts/system/domain.com/logs/proxy_error_log

2016/09/16 01:53:12 [error] 28395#0: *4555892 FastCGI sent in stderr: "PHP message: PHP Warning:  file_exists(): open_basedir restriction in effect. File(index.php/t-16172.html) is not within the allowed path(s): (/var/www/vhosts/domain.com/:/tmp/) in /var/www/vhosts/domain.com/public_html/dbseo.php on line 370" while reading response header from upstream, client: client_IP, server: domain.com, request: "GET /boards/archive/index.php/t-16172.html HTTP/1.0", upstream: "fastcgi://unix:///var/www/vhosts/system/domain.com/php-fpm.sock:", host: "www.domain.com", referrer: "http://www.domain.com/boards/archive/index.php/t-16172.html"