GMOデジロックのレンタルサーバー「コアサーバー」で動いている Apache HTTP Server について調べる

$ uname -a
Linux b1.coreserver.jp 4.4.0-161-generic #189-Ubuntu SMP Tue Aug 27 08:10:16 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

$ ps -ef | grep httpd
root      460494  460474  0 05:50 ?        00:00:00 fghack /usr/local/apache24/bin/httpd -T
root      460506  460494  0 05:50 ?        00:00:00 [httpd] <defunct>
root      460529       1  0 05:50 ?        00:00:02 /usr/local/apache24/bin/httpd -T
apache    460530  460529  0 05:50 ?        00:00:01 /usr/local/apache24/bin/httpd -T
apache    460531  460529  0 05:50 ?        00:00:01 /usr/local/apache24/bin/httpd -T
apache    460532  460529  0 05:50 ?        00:01:25 /usr/local/apache24/bin/httpd -T
apache    460533  460529  0 05:50 ?        00:00:57 /usr/local/apache24/bin/httpd -T
apache    460537  460529  0 05:50 ?        00:01:35 /usr/local/apache24/bin/httpd -T
hoge      825723  824508  0 23:59 pts/0    00:00:00 grep --color=auto httpd

$ /usr/local/apache24/bin/httpd -V
Server version: Apache/2.4.41 (Unix)
Server built:   Sep  5 2019 03:19:37
Server's Module Magic Number: 20120211:88
Server loaded:  APR 1.5.2, APR-UTIL 1.5.4
Compiled using: APR 1.5.2, APR-UTIL 1.5.4
Architecture:   64-bit
Server MPM:     event
  threaded:     yes (fixed thread count)
    forked:     yes (variable process count)
Server compiled with....
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=256
 -D HTTPD_ROOT="/usr/local/apache24"
 -D SUEXEC_BIN="/usr/local/apache24/bin/suexec"
 -D DEFAULT_PIDLOG="logs/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"

$ /usr/local/apache24/bin/httpd -l
Compiled in modules:
  core.c
  mod_so.c
  http_core.c
  event.c

$ /usr/local/apache24/bin/httpd -M
httpd: Could not open configuration file /usr/local/apache24/conf/httpd.conf: Permission denied