MongoDB

Installation

To install the latest version of MongoDB:

Type this in Terminal:
```
brew install mongodb
```

To install a specific version of MongoDB:

Type the followings in Terminal instead:
```
brew search mongodb
```

You should see the output like these:

mongodb
homebrew/php/php54-mongodb                                 homebrew/versions/mongodb30
homebrew/php/php55-mongodb                                 Caskroom/cask/mongodb-compass
homebrew/php/php56-mongodb                                 Caskroom/cask/mongodb
homebrew/php/php70-mongodb                                 Caskroom/cask/mongodbpreferencepane
homebrew/php/php71-mongodb                                 Caskroom/cask/orelord-mongodb
homebrew/versions/mongodb26                                Caskroom/versions/mongodb-compass-beta

Copy the version you want to install, e.g. homebrew/versions/mongodb30

And run brew install like this:

brew install homebrew/versions/mongodb30

To check the installed MongoDB daemon version:
```
mongod --version
```
To check the the Mongo Shell version:
```
mongo --version
```

Start/Restart/Stop MongoDB

To start the MongoDB, type this in Terminal:
```
brew services start mongodb
```
If you get an error of Formula mongodb is not installed, it may because you chose to install specific version of MongoDB.
- Try this to find the correct name of the service:
```
brew services list
```
- Then start MongoDB with the correct service name for example:
```
brew services start mongodb30
```
To restart:
```
brew services restart mongodb
```
To stop: (or prevent MongoDB from started again when the Mac is reboot)
```
brew services stop mongodb
```
Notes: If brew services list showing the service status is started, the service will become started again when the Mac is reboot.

Troubleshooting

If you see this error while using brew services command:
```
Error: Unknown command: services
```
It is because brew services has not been tapped.
Go back to the Homebrew section under Core Setup.

Replica Set mode

Skip this part if you don't need to run MongoDB in both standalone and replica set modes at the same time.
This is to create a replica set with 3 nodes running on ports 27117, 27118, 27119
Determine the folder to store the LaunchAgent plist
```
brew services list
```
If the service name is mongodb, the LaunchAgent plist will be stored in /usr/local/opt/mongodb
Type this to confirm:
```
ls -la /usr/local/opt/mongodb
```
If you install older version of MongoDB, the service name may be something else, e.g. mongodb30
Then the LaunchAgent plist will be stored in /usr/local/opt/mongodb30/ instead
After you find the folder, do this to ease the upcoming steps:
```
export mongodb_service_name="mongodb"
```
If you install older version of MongoDB: (replace the service name)
```
export mongodb_service_name="mongodb30"
```

Create log folders

mkdir -p /usr/local/var/log/mongodb_rs1_node1
mkdir -p /usr/local/var/log/mongodb_rs1_node2
mkdir -p /usr/local/var/log/mongodb_rs1_node3

Create data folders

mkdir -p /usr/local/var/mongodb_rs1_node1
mkdir -p /usr/local/var/mongodb_rs1_node2
mkdir -p /usr/local/var/mongodb_rs1_node3

Create config file for the 1st node /usr/local/etc/mongodb_rs1_node1.conf

systemLog:
  destination: file
  path: "/usr/local/var/log/mongodb_rs1_node1/mongo.log"
  quiet: true
  logAppend: true
storage:
  journal:
      enabled: true
  dbPath: "/usr/local/var/mongodb_rs1_node1"
  engine: "wiredTiger"
processManagement:
  fork: true
net:
  port: 27117
replication:
  replSetName: "rs1"

Create config file for the 2nd node /usr/local/etc/mongodb_rs1_node2.conf

systemLog:
  destination: file
  path: "/usr/local/var/log/mongodb_rs1_node2/mongo.log"
  quiet: true
  logAppend: true
storage:
  journal:
      enabled: true
  dbPath: "/usr/local/var/mongodb_rs1_node2"
  engine: "wiredTiger"
processManagement:
  fork: true
net:
  port: 27118
replication:
  replSetName: "rs1"

Create config file for the 3rd node /usr/local/etc/mongodb_rs1_node3.conf

systemLog:
  destination: file
  path: "/usr/local/var/log/mongodb_rs1_node3/mongo.log"
  quiet: true
  logAppend: true
storage:
  journal:
      enabled: true
  dbPath: "/usr/local/var/mongodb_rs1_node3"
  engine: "wiredTiger"
processManagement:
  fork: true
net:
  port: 27119
replication:
  replSetName: "rs1"

Create LaunchAgent for the 1st node /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node1.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>homebrew.mxcl.mongodb_rs1_node1</string>
  <key>ProgramArguments</key>
  <array>
     <string>/usr/local/bin/mongod</string>
     <string>--config</string>
     <string>/usr/local/etc/mongodb_rs1_node1.conf</string>
  </array>
  <key>RunAtLoad</key>
  <true/>
  <key>KeepAlive</key>
  <false/>
  <key>WorkingDirectory</key>
  <string>/usr/local</string>
  <key>StandardErrorPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node1/output.log</string>
  <key>StandardOutPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node1/output.log</string>
  <key>HardResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
  <key>SoftResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
</dict>
</plist>

Create LaunchAgent for the 2nd node /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node2.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>homebrew.mxcl.mongodb_rs1_node2</string>
  <key>ProgramArguments</key>
  <array>
     <string>/usr/local/bin/mongod</string>
     <string>--config</string>
     <string>/usr/local/etc/mongodb_rs1_node2.conf</string>
  </array>
  <key>RunAtLoad</key>
  <true/>
  <key>KeepAlive</key>
  <false/>
  <key>WorkingDirectory</key>
  <string>/usr/local</string>
  <key>StandardErrorPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node2/output.log</string>
  <key>StandardOutPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node2/output.log</string>
  <key>HardResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
  <key>SoftResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
</dict>
</plist>

Create LaunchAgent for the 3rd node /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node3.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>homebrew.mxcl.mongodb_rs1_node3</string>
  <key>ProgramArguments</key>
  <array>
     <string>/usr/local/bin/mongod</string>
     <string>--config</string>
     <string>/usr/local/etc/mongodb_rs1_node3.conf</string>
  </array>
  <key>RunAtLoad</key>
  <true/>
  <key>KeepAlive</key>
  <false/>
  <key>WorkingDirectory</key>
  <string>/usr/local</string>
  <key>StandardErrorPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node3/output.log</string>
  <key>StandardOutPath</key>
  <string>/usr/local/var/log/mongodb_rs1_node3/output.log</string>
  <key>HardResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
  <key>SoftResourceLimits</key>
  <dict>
     <key>NumberOfFiles</key>
     <integer>1024</integer>
  </dict>
</dict>
</plist>

Enable these 3 LaunchAgents

cd ~/Library/LaunchAgents
ln -s /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node1.plist homebrew.mxcl.mongodb_rs1_node1.plist
ln -s /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node2.plist homebrew.mxcl.mongodb_rs1_node2.plist
ln -s /usr/local/opt/$mongodb_service_name/homebrew.mxcl.mongodb_rs1_node3.plist homebrew.mxcl.mongodb_rs1_node3.plist
launchctl load homebrew.mxcl.mongodb_rs1_node?.plist

Verify if the 3 MongoDB nodes are running properly

mongo --port 27117
mongo --port 27118
mongo --port 27119

Initialize Replica Set
```
mongo --port 27117
```

In Mongo shell, type:

rsconf = {
         _id: "rs1",
         members: [
                    {
                     _id: 0,
                     host: "localhost:27117"
                    }
                  ]
       }
rs.initiate( rsconf )
rs.add("localhost:27118")
rs.add("localhost:27119")

To verify:
```
mongo --port 27117
```
Then in Mongo shell:
```
rs.status()
```

You should see output like these:

{
  "set" : "rs1",
  "date" : ISODate("2016-12-25T17:46:47.411Z"),
  "myState" : 1,
  "members" : [
      {
          "_id" : 0,
          "name" : "localhost:27117",
          "health" : 1,
          "state" : 1,
          "stateStr" : "PRIMARY",
          "uptime" : 54,
          "optime" : Timestamp(1482687993, 1),
          "optimeDate" : ISODate("2016-12-25T17:46:33Z"),
          "electionTime" : Timestamp(1482687992, 2),
          "electionDate" : ISODate("2016-12-25T17:46:32Z"),
          "configVersion" : 3,
          "self" : true
      },
      {
          "_id" : 1,
          "name" : "localhost:27118",
          "health" : 1,
          "state" : 2,
          "stateStr" : "SECONDARY",
          "uptime" : 14,
          "optime" : Timestamp(1482687993, 1),
          "optimeDate" : ISODate("2016-12-25T17:46:33Z"),
          "lastHeartbeat" : ISODate("2016-12-25T17:46:45.865Z"),
          "lastHeartbeatRecv" : ISODate("2016-12-25T17:46:45.864Z"),
          "pingMs" : 0,
          "configVersion" : 3
      },
      {
          "_id" : 2,
          "name" : "localhost:27119",
          "health" : 1,
          "state" : 2,
          "stateStr" : "SECONDARY",
          "uptime" : 13,
          "optime" : Timestamp(1482687993, 1),
          "optimeDate" : ISODate("2016-12-25T17:46:33Z"),
          "lastHeartbeat" : ISODate("2016-12-25T17:46:45.865Z"),
          "lastHeartbeatRecv" : ISODate("2016-12-25T17:46:45.865Z"),
          "pingMs" : 0,
          "configVersion" : 3
      }
  ],
  "ok" : 1
}

MongoDB

MongoDB

Installation

Start/Restart/Stop MongoDB

Troubleshooting

Replica Set mode

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