我有一个shell脚本,做一些蒙戈DB操作:
例如mongo testdb --eval "db.dropDatabase()"
但是,如果该mongod的服务器没有运行,我得到:
MongoDB shell version: 2.0.4
connecting to: testdb
Tue May 14 04:33:58 Error: couldn't connect to server 127.0.0.1 shell/mongo.js:84
是否有蒙戈我可以检查连接状态的方法吗? 最后,我想是这样的:
if(mongod is running):
mongo testdb --eval "db.dropDatabase()"
else:
echo "pls make sure your mongod is running"
exit 1
你应该能够创建一个bash脚本是这样的:
mongo --eval "db.stats()" # do a simple harmless command of some sort
RESULT=$? # returns 0 if mongo eval succeeds
if [ $RESULT -ne 0 ]; then
echo "mongodb not running"
exit 1
else
echo "mongodb running!"
fi
尝试在你的shell脚本运行以下命令: -
p纤ep的mongod
如果值是数字,你知道该进程正在运行,如果你得到一个空值,将其标记为服务没有运行?
这就是我运行检查的mongod达:
# this script checks if the mongod is running.
# if not, send mail
#
EMAILIST=dba@wherever
`ps -A | grep -q '[m]ongod'`
if [ "$?" -eq "0" ]; then
exit 0
else
echo "The mongod server SB2MDB01 is DOWN" | mailx \
-s "Server DOWN: SB2MDB01" $EMAILIST
fi
exit 0
如果您有管理权限,你也可以做一个sudo systemctl status mongod
它给你很多有用的附加信息:
mongod.service - MongoDB Database Server
Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2019-03-14 09:26:53 UTC; 5 weeks 9 days ago
Docs: https://docs.mongodb.org/manual
Main PID: 420 (mongod)
CGroup: /system.slice/mongod.service
└─420 /usr/bin/mongod --config /etc/mongod.conf