Created
January 19, 2023 11:31
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Mongodb Replicaset for Swarm
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services: | |
# first, we define the three mongo servers that will act as replicas | |
# here, we steup the hostname ports, and startup command | |
# which is the same as discussed in the previous section | |
mongo1: | |
hostname: mongo1 | |
image: mongo | |
expose: | |
- 27017 | |
ports: | |
- 30001:27017 | |
restart: always | |
command: mongod --replSet my-mongo-set | |
mongo2: | |
hostname: mongo2 | |
image: mongo | |
expose: | |
- 27017 | |
ports: | |
- 30002:27017 | |
restart: always | |
command: mongod --replSet my-mongo-set | |
mongo3: | |
hostname: mongo3 | |
image: mongo | |
expose: | |
- 27017 | |
ports: | |
- 30003:27017 | |
restart: always | |
command: mongod --replSet my-mongo-set | |
# finally, we can define the initialization server | |
# this runs the `rs.initiate` command to intialize | |
# the replica set and connect the three servers to each other | |
mongoinit: | |
image: mongo | |
# this container will exit after executing the command | |
restart: "no" | |
depends_on: | |
- mongo1 | |
- mongo2 | |
- mongo3 | |
command: > | |
mongo --host mongo1:27017 --eval | |
' | |
db = (new Mongo("localhost:27017")).getDB("test"); | |
config = { | |
"_id" : "my-mongo-set", | |
"members" : [ | |
{ | |
"_id" : 0, | |
"host" : "mongo1:27017" | |
}, | |
{ | |
"_id" : 1, | |
"host" : "mongo2:27017" | |
}, | |
{ | |
"_id" : 2, | |
"host" : "mongo3:27017" | |
} | |
] | |
}; | |
rs.initiate(config); | |
' |
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