南大通用GBase 8a V95版本开机自启动服务的几个方法

发表于2021年12月6日2021年12月6日作者 laozizhu

GBase 8a的V95版本，不再依赖操作系统root用户运行，增强了系统的安全性，但同时一些功能也缺失了，比如开机自启动。本文提供几种用户需要达到开机自启动的几个方法。

所有方法，都需要直接或间接的依赖操作系统root用户权限。

目录导航

/etc/rc.local

该方案最简单，将启动数据库服务的命令放到这里，实现开机自启动。

su - gbase -c 'gcluster_services all start'

如下是手工运行该命令的效果

[root@gbase_rh7_001 ~]# su - gbase -c'gcluster_services all start'
Starting gcware :                                          [  OK  ]
Starting gcluster :                                        [  OK  ]
Starting gcrecover :                                       [  OK  ]
Starting gbase :                                           [  OK  ]
Starting syncserver :                                      [  OK  ]
Starting GCMonit success!
[root@gbase_rh7_001 ~]# ps -ef|grep gbase
avahi      601     1  0 09:57 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
gbase     3020     1  3 10:00 ?        00:00:00 /opt/gbase/gcware/sbin/gcware
gbase     3025     1 24 10:00 ?        00:00:01 /opt/gbase/gcluster/server/bin/gclusterd
gbase     3048     1 11 10:00 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcrecover
gbase     3071     1 22 10:00 ?        00:00:01 /opt/gbase/gnode/server/bin/gbased
gbase     3614     1  0 10:00 ?        00:00:00 /opt/gbase/gnode/server/bin/gc_sync_server
gbase     3623     1  1 10:00 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmonit --start
gbase     3625     1  0 10:00 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmmonit --start
root      3640  2911  0 10:00 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 ~]#

/etc/init.d 启动服务

完全参考GBase V8的版本实现V9的服务启动

一、编写服务文件，并放到/etc/init.d目录下

注意文件加上可执行权限，比如chmod a+x GBaseBoot

[root@localhost system]# cat /etc/init.d/GBaseBoot
#!/bin/sh
#
### BEGIN INIT INFO
# Provides:                    GBase
# Required-Start:       $network
# Should-Start:         $syslog
# Required-Stop:        $network
# Default-Start:                2 3 4 5
# Default-Stop:                 0 1 6
# Short-Description:    GBase 8a Cluster MPP.
# Description:          Provide MPP Database service
### END INIT INFO
#

function is_OK()
{
  if [ $RETVAL -eq 0 ] ;then
    echo "OK"
  else
    echo "FAIL"
  fi
}

RETVAL=0

# See how we were called.
case "$1" in
  start)
                date >> /var/log/GBaseBoot.log
                echo -n "Starting gbase: "
                su - gbase -c"gcluster_services all start" >> /var/log/GBaseBoot.log
                RETVAL=$?
                echo `is_OK`
                ;;
  stop)
                date  >> /var/log/GBaseBoot.log
                echo -n "Stopping gbase: "
                su - gbase -c"gcluster_services all stop"  >> /var/log/GBaseBoot.log
                RETVAL=$?
                echo `is_OK`
                ;;
  restart)
        date  >> /var/log/GBaseBoot.log
         echo -n "Restarting gbase: "
        su - gbase -c"gcluster_services all restart"  >> /var/log/GBaseBoot.log
        RETVAL=$?
        echo `is_OK`
        ;;
  status)
        su - gbase -c"gcluster_services all info"
        RETVAL=$?
        ;;
  *)
        echo "Usage: $0 {start|stop|restart|status}"
        exit 1
esac

exit $RETVAL

通过如下命令，看服务是否正常

[root@gbase_rh7_001 init.d]# service GBaseBoot status
gcware is stopped
gcluster is stopped
gcrecover is stopped
gbase is stopped
syncserver is stopped

2、加入自启动

chkconfig --add GBaseBoot

检查
[root@localhost system]# chkconfig --list| grep GBaseBoot

GBaseBoot       0:off   1:off   2:on    3:on    4:on    5:on    6:off

3、重启测试

     ┌────────────────────────────────────────────────────────────────────┐
     │                        • MobaXterm 10.4 •                          │
     │            (SSH client, X-server and networking tools)             │
     │                                                                    │
     │ ➤ SSH session to root@192.168.56.1                                 │
     │   • SSH compression : ✔                                            │
     │   • SSH-browser     : ✔                                            │
     │   • X11-forwarding  : ✔  (remote display is forwarded through SSH) │
     │   • DISPLAY         : ✔  (automatically set on remote server)      │
     │                                                                    │
     │ ➤ For more info, ctrl+click on help or visit our website           │
     └────────────────────────────────────────────────────────────────────┘

Last login: Mon Dec  6 10:10:11 2021 from 192.168.56.1
[root@gbase_rh7_001 ~]# ps -ef|grep gbase
avahi      557     1  0 10:19 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
gbase     1539     1  0 10:19 ?        00:00:00 /opt/gbase/gcware/sbin/gcware
gbase     2143     1 17 10:19 ?        00:00:22 /opt/gbase/gcluster/server/bin/gclusterd
gbase     2249     1 18 10:19 ?        00:00:23 /opt/gbase/gcluster/server/bin/gcrecover
gbase     2374     1  0 10:19 ?        00:00:00 /opt/gbase/gnode/server/bin/gbased
gbase     2417     1  0 10:19 ?        00:00:00 /opt/gbase/gnode/server/bin/gc_sync_server
gbase     3061     1  0 10:19 ?        00:00:01 /opt/gbase/gcluster/server/bin/gcmonit --start
gbase     3065     1  0 10:19 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmmonit --start
root      3508  3466  0 10:21 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 ~]#

monit等看门狗服务

前面的几个方案，如果出现启动失败，不会自动重试，特别是网络挂载数据盘的情况，全部物理级本地硬件的没这个问题。

此时部署一个看门狗就有必要了。监控核心进程，如果超过限制，则尝试拉起。当然，如果停服务，要记得停下monit，否则也会被其拉起，着也算个【注意事项】

/etc/monit.d/monit_gbase.conf

里面检测的是gcmmonit进程, 该进程是数据库内置的看门狗程序，其如果发现其它进程消失，或自动拉起的，所以外面的进程，只需要检测这个就可以了。

拉起服务的部分是全部，没有单独拉起gcmmonit.

检测和拉起周期，请自行修改，建议不要拉起太久时间，除非用户希望这样。

该文件格式，参考的GBase V8的样例。

###############################################################################
## gcluster Services
###############################################################################
check process gcmmonit with pidfile /tmp/fake.pid
start program = "/bin/su - gbase -c 'gcluster_services all start'"
if does not exist then start
# cycles means how many intervals which is set in monitrc(set daemon  5)
if 1000 restarts within 60000 cycles then timeout
group gcluster

该功能由monit提供，所以需要确保monit是开机自启动状态即可。

运行样例

[root@gbase_rh7_001 monit.d]# su - gbase -c"gcluster_services all info"
gcware is stopped
gcluster is stopped
gcrecover is stopped
gbase is stopped
syncserver is stopped

[root@gbase_rh7_001 monit.d]#
[root@gbase_rh7_001 monit.d]# service monit status
monit is stopped
[root@gbase_rh7_001 monit.d]# ps -ef|grep gbase
avahi      557     1  0 10:19 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
root      5805  3466  0 10:45 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 monit.d]# service monit start
Starting monit: Starting monit daemon with http interface at [localhost:2812]

[root@gbase_rh7_001 monit.d]# ps -ef|grep gbase
avahi      557     1  0 10:19 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
root      5832     1  0 10:45 ?        00:00:00 /bin/su - gbase -c gcluster_services all start
gbase     5833  5832  0 10:45 ?        00:00:00 /bin/bash /opt/gbase/gcluster/server/bin/gcluster_services all start
gbase     5853     1  6 10:45 ?        00:00:00 /opt/gbase/gcware/sbin/gcware
gbase     5858  5833 34 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gclusterd
gbase     5882  5833 11 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcrecover
gbase     5904  5833  0 10:45 ?        00:00:00 /opt/gbase/gnode/server/bin/gbased
gbase     5905  5833  0 10:45 ?        00:00:00 sleep 1
root      6443  3466  0 10:45 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 monit.d]# ps -ef|grep gbase
avahi      557     1  0 10:19 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
gbase     5853     1  1 10:45 ?        00:00:00 /opt/gbase/gcware/sbin/gcware
gbase     5858     1 16 10:45 ?        00:00:02 /opt/gbase/gcluster/server/bin/gclusterd
gbase     5882     1 16 10:45 ?        00:00:02 /opt/gbase/gcluster/server/bin/gcrecover
gbase     5904     1  5 10:45 ?        00:00:00 /opt/gbase/gnode/server/bin/gbased
gbase     6449     1  0 10:45 ?        00:00:00 /opt/gbase/gnode/server/bin/gc_sync_server
gbase     6454     1  0 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmonit --start
gbase     6456     1  0 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmmonit --start
root      6473  3466  0 10:46 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 monit.d]# ps -ef|grep gbase
avahi      557     1  0 10:19 ?        00:00:00 avahi-daemon: running [gbaserh7001.local]
gbase     5853     1  0 10:45 ?        00:00:00 /opt/gbase/gcware/sbin/gcware
gbase     5858     1 14 10:45 ?        00:00:03 /opt/gbase/gcluster/server/bin/gclusterd
gbase     5882     1 14 10:45 ?        00:00:02 /opt/gbase/gcluster/server/bin/gcrecover
gbase     5904     1  4 10:45 ?        00:00:00 /opt/gbase/gnode/server/bin/gbased
gbase     6449     1  0 10:45 ?        00:00:00 /opt/gbase/gnode/server/bin/gc_sync_server
gbase     6454     1  1 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmonit --start
gbase     6456     1  0 10:45 ?        00:00:00 /opt/gbase/gcluster/server/bin/gcmmonit --start
root      6483  3466  0 10:46 pts/0    00:00:00 grep --color=auto gbase
[root@gbase_rh7_001 monit.d]#

第三方看门狗

应用开发商的业务系统，一般都有自己的看门狗程序，可以部署到数据库上，实现的数据库服务的开启启动和服务进程监控。

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