add lxc init options

Author: simonkoeck

runners/lxc/lxc-dispose.bash

@@ -0,0 +1,5 @@
+runners=$1
+
+for i in {1..$runners}; do
+    userdel runner$i
+done

runners/lxc/lxc-init.bash

@@ -1,8 +1,12 @@
-for i in {1..150}; do
+runners=$1
+nproc=$2
+nofile=$3
+
+for i in {1..$runners}; do
     useradd -M runner$i
     usermod -d /tmp runner$i
-    echo "runner$i soft nproc 64" >> /etc/security/limits.conf
-    echo "runner$i hard nproc 64" >> /etc/security/limits.conf
-    echo "runner$i soft nofile 2048" >> /etc/security/limits.conf
-    echo "runner$i hard nofile 2048" >> /etc/security/limits.conf
+    echo "runner$i soft nproc $nproc" >> /etc/security/limits.conf
+    echo "runner$i hard nproc $nproc" >> /etc/security/limits.conf
+    echo "runner$i soft nofile $nofile" >> /etc/security/limits.conf
+    echo "runner$i hard nofile $nofile" >> /etc/security/limits.conf
 done

src/constants.ts

@@ -23,3 +23,15 @@ export interface IExecuteOptions {
 }
 
 export const defaultExecutionTimeout = 5;
+
+export interface ILxcInitOptions {
+  runners?: number;
+  maxProcesses?: number;
+  maxFiles?: number;
+}
+
+export const defaultLxcInitOptions: ILxcInitOptions = {
+  runners: 100,
+  maxProcesses: 64,
+  maxFiles: 2048,
+};

src/lxc.ts

@@ -1,11 +1,13 @@
 "use strict";
 
 import { exec } from "child_process";
-import { mkdirSync, writeFileSync, readFileSync, chmodSync } from "fs";
+import { mkdirSync, writeFileSync, readFileSync } from "fs";
 import { platform } from "os";
 import {
   defaultExecutionTimeout,
+  defaultLxcInitOptions,
   IExecuteOptions,
+  ILxcInitOptions,
   Language,
 } from "./constants";
 
@@ -37,9 +39,12 @@ class LXC {
   }
 
   /**
-   * Run this function the first time, after installing the container
+   * Run this function the first time, after installing the container. Please be patient, this could take a while
+   *
+   * @param options Pass options for the initialization to the function.
+   * @returns
    */
-  init() {
+  init(options: ILxcInitOptions = defaultLxcInitOptions) {
     try {
       // Copy .sh file to correct location
       const shFile = readFileSync(
@@ -55,7 +60,11 @@ class LXC {
 
     return new Promise<string>((resolve, reject) => {
       exec(
-        `lxc-attach --clear-env -n cee -- bash /tmp/lxc-init.bash`,
+        `lxc-attach --clear-env -n cee -- bash /tmp/lxc-init.bash ${
+          options.runners || defaultLxcInitOptions.runners
+        } ${options.maxProcesses || defaultLxcInitOptions.maxProcesses} ${
+          options.maxFiles || defaultLxcInitOptions.maxFiles
+        }`,
         (err, stdout, stderr) => {
           if (err) return reject(err);
           if (stderr) return reject(stderr);