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cluster
37 lines (33 loc) · 952 Bytes
/
cluster
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var cluster = require('cluster')
var fs = require('fs')
if (cluster.isMaster) {
fs.writeFile('./tmp/cluster.pid', process.pid, function (err) {
if (err) {
console.log('Error: unable to create cluster.pid')
process.exit(1)
} else {
console.log('Starting cluster with pid: ' + process.pid)
// ensure workers exit cleanly
process.on('SIGINT', function () {
console.log('Cluster shutting down..')
for (var id in cluster.workers) {
cluster.workers[id].kill()
}
// exit the master process
process.exit(0)
})
// Count the machine's CPUs
var cpuCount = require('os').cpus().length
// Create a worker for each CPU
for (var i = 0; i < cpuCount; i += 1) {
cluster.fork()
}
// Listen for dying workers
cluster.on('exit', function () {
cluster.fork()
})
}
})
} else {
require('./instance')
}