Bash script to launch three single mongo shard dbs, three configs, a mongos, and add the shards as initialization.

launch_3_shard_3_cfg_1_mongos.sh

#!/bin/bash
set -e
set -x
 
hn=$(hostname -s)
dbpath=${HOME}/fresh_shard_cluster
mkdir ${dbpath}  ${dbpath}/shard0{1,2,3} ${dbpath}/shard0{1,2,3}/db ${dbpath}/config{1,2,3} ${dbpath}/config{1,2,3}/db
if [ ! -f ${dbpath}/keyfile ]; then
  openssl rand -base64 741 > ${dbpath}/keyfile
  chmod 600 ${dbpath}/keyfile
fi
 
mongod --dbpath ${dbpath}/shard01/db --logpath ${dbpath}/shard01/mongod.log --port 27018 --fork --keyFile ${dbpath}/keyfile
mongod --dbpath ${dbpath}/shard02/db --logpath ${dbpath}/shard02/mongod.log --port 27019 --fork --keyFile ${dbpath}/keyfile
mongod --dbpath ${dbpath}/shard03/db --logpath ${dbpath}/shard03/mongod.log --port 27020 --fork --keyFile ${dbpath}/keyfile
 
mongod --dbpath ${dbpath}/config1/db --logpath ${dbpath}/config1/mongod.log --port 27021 --fork --keyFile ${dbpath}/keyfile --configsvr
mongod --dbpath ${dbpath}/config2/db --logpath ${dbpath}/config2/mongod.log --port 27022 --fork --keyFile ${dbpath}/keyfile --configsvr
mongod --dbpath ${dbpath}/config3/db --logpath ${dbpath}/config3/mongod.log --port 27023 --fork --keyFile ${dbpath}/keyfile --configsvr
 
mongos --logpath ${dbpath}/mongos.log --configdb ${hn}:27021,${hn}:27022,${hn}:27023 --keyFile ${dbpath}/keyfile  --fork
 
mongo --eval "sh.addShard('${hn}:27018'); sh.addShard('${hn}:27019'); sh.addShard('${hn}:27020')"

Hi, Akira Kurogane, thank you for your time to answer my question in StactOverflow. The log file mongos.log in the mongos's log path, showed the reason for that error.

warning: Error while attempting to acquire distributed lock for user modification: 
could not acquire distributed lock authorizationData for Create user after 5s, 
other lock may be held: { _id: "authorizationData", state: 2, who: "1    0.171.25.79:27000:1421218318:1804289383:conn4:846930886", 
ts: ObjectId('54b6120ea1760ef176f3b1da'), 
process: "10.171.25.79:27000:1421218318:1804289383", 
when: new Date(1421218318456), why: "Create user" }

But I don't know how to going on with this error message to sovle this problem. Can you give me some suggestions according it? very thankful again.