[英]starting mongodb single server as replica set to enable oplog through supervisord
I want to start a single mongod instance with command mongod --config config/mongod.conf
Once above process starts running I also have to call mongodb/bin/mongo --eval rs.initiate()
Now the issue is I am starting mongod through supervisord I want to perform both of the above operation one after another.我想使用命令mongod --config config/mongod.conf
启动单个 mongod 实例一旦上述过程开始运行,我还必须调用mongodb/bin/mongo --eval rs.initiate()
现在问题是我正在启动 mongod通过 supervisord 我想一个接一个地执行上述两个操作。 supervisord takes just 1 command to start the process which is first command. supervisord 只需要 1 个命令来启动进程,这是第一个命令。 I have no other place to run the rs.initiate().我没有其他地方可以运行 rs.initiate()。 If I put both the command in shell script even then the control will be stuck with the first command itself.如果我将两个命令都放在 shell 脚本中,那么控件将被第一个命令本身卡住。
Perhaps you could combine the commands into a single command.也许您可以将这些命令合并为一个命令。 Ie, IE,
mongod --config config/mongod.conf && sleep 5 && mongodb/bin/mongo --eval rs.initiate()
The sleep command assumes 5 seconds is enough for the mongod to come up and be available for an rs.initiate(). sleep 命令假设 5 秒足以让 mongod 出现并可供 rs.initiate() 使用。 Given you are initiating a replica set I assume you have no data?鉴于您正在启动一个副本集,我假设您没有数据? If so, startup should be relatively quickly.如果是这样,启动应该相对较快。 Also if you are attempting to make a single node replica set you might want to consider...此外,如果您尝试制作单节点副本集,您可能需要考虑......
rs.initiate (
{
_id: "somereplicasetname",
version: 1,
members:
[
{ _id: 0, host: "somehostname:27017" }
]
}
)
... so that you don't need to configure the initiated replicaset any further. ...这样您就不需要进一步配置启动的副本集。 The _id value (currently showing as somereplicasetname
) is expected to match the replica set name in the config file mongod.conf
and the somehostname
is expected to resolve to the current host. _id 值(当前显示为somereplicasetname
)应与配置文件mongod.conf
中的副本集名称匹配,而somehostname
应解析为当前主机。
By the way, I assume you recognize you only need to initialize a replica set once, not every time you start the mongod process..顺便说一句,我假设您认识到您只需要初始化一个副本集一次,而不是每次启动 mongod 进程时..
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