cloud-log-collector/index.js

Collect log from mutiple servers

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////////////////////////////////////////////////////////////////////////////////////////////////////////// CLCwizard
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function CLCwizard() {
// Load external
var readlineSync = require('readline-sync');
var fs = require('fs');
var crypto = require('crypto');

// custom
function ensureDirSync (dirpath) {
  try {
    fs.mkdirSync(dirpath, { recursive: true })
  } catch (err) {
  }
}


// init var
var q;
var config={};


// wizard
console.log('---------------------------------------------------------------');
console.log('---------------------------------------------------------------');
console.log('Wizard for Cloud Log Collector configuration file');
console.log('---------------------------------------------------------------');
// conf params
config['server']={};
config['server']['hostname'] = readlineSync.question('Server hostname :');
config['server']['port'] = readlineSync.question('Server port (1095) :');
if (config['server']['port']=="") config['server']['port']="1095";
config['server']['ssl']={};
config['server']['ssl']['certificate'] = readlineSync.question('SSL Certificate file on the server :');
config['server']['ssl']['key'] = readlineSync.question('SSL Certificate Key file on the server :');
config['server']['data']={};
config['server']['data']['path'] = readlineSync.question('Folder used to store all log files on the server (/var/clc/data) :');
if (config['server']['data']['path']=="") config['server']['data']['path']="/var/clc/data";
config['server']['tokens']={};
config['server']['tokens']['path'] = readlineSync.question('Folder used to store client credential data on the server (/var/clc/tokens) :');
if (config['server']['tokens']['path']=="") config['server']['tokens']['path']="/var/clc/tokens";
q='';
do { 
q=readlineSync.question('Want to use a magic token ? (automatically generates token from client side at first connection) (y/n) :'); } while ((q != 'n') &&(q != 'y'));
if (q=='y') {

var tempo = readlineSync.question('Enter magic token (empty = auto generated) :');
if (tempo=="") {
tempo=Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
console.log("Magic token : "+tempo);
}


config['server']['tokens']['magic_salt']= Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15)+Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
var hash = crypto.createHash('sha512');
data = hash.update(config['server']['tokens']['magic_salt']+tempo, 'utf-8');
gen_hash= data.digest('hex');
config['server']['tokens']['magic_hash']=gen_hash;
}
console.log('---------------------------------------------------------------');
config['community']={};
q='';
do { q=readlineSync.question('In order to help community, send anonymous data on system usage ? (To help future dev) (y/n) :'); } while ((q != 'n') &&(q != 'y'));
config['community']['send_anonymous']=q;

var config_server=JSON.stringify(config,null,4);

console.log('---------------------------------------------------------------');
// client config
var config2={};
config2['server']={};
config2['server']['hostname'] = config['server']['hostname'];
config2['client']={};
config2['server']['port'] = config['server']['port'];
config2['client']['SecretClientKey'] = "XXXSecretClientKeyXXX";
config2['client']['watcher']=[];

// log to process
q='';
do { 
if (q!='') config2['client']['watcher'].push(q); q=readlineSync.question('Which log do you want to watch on the client ? (empty to continue) :'); } while (q != '');

var config_client=JSON.stringify(config2,null,4);

console.log('---------------------------------------------------------------');
// where to save conf
var config_path = readlineSync.question('Folder to save config file(s) (./conf) :');
if (config_path=="") config_path="./conf";
ensureDirSync(config_path);
fs.writeFileSync(config_path+"/server.conf",config_server);
fs.writeFileSync(config_path+"/client.conf",config_client);
console.log('Once everything is configured, you should delete this folder for security reasons');

console.log('---------------------------------------------------------------');
console.log('---------------------------------------------------------------');
// process server part
console.log('Process to install Cloud Log Collector on server :');
console.log('- copy \''+config_path+"/server.conf"+'\' to the server in file \'/as/you/want/server.conf\'');
console.log('- run these commands in root :');
console.log('\tnpm i -g cloud-log-collector');
console.log('\tcloud-log-collector-install-server /as/you/want/server.conf');
console.log('delete file \'/as/you/want/server.conf\'');
console.log('---------------------------------------------------------------');
var server_installed=false;
do { q=readlineSync.question('Do you want me to install server side on this server now ? (y/n) :'); } while ((q != 'n') &&(q != 'y'));
if (q=='y') {
server_installed=true;
var res = require('child_process').execSync("cloud-log-collector-install-server "+config_path+"/server.conf").toString();
console.log(res);
require('child_process').execSync('systemctl restart CLCServer');
console.log('Done !');
}
console.log('---------------------------------------------------------------');
// process client part
console.log('Process to install Cloud Log Collector on client without magic token :');
console.log('- copy \''+config_path+"/client.conf"+'\' to the server in file \'/as/you/want/client.conf\'');
console.log('\tReplace XXXSecretClientKeyXXX by your secret key in \'/as/you/want/client.conf\'');
console.log('- run these commands :');
console.log('\tnpm i -g cloud-log-collector');
console.log('\tcloud-log-collector-install-client /as/you/want/client.conf');
console.log('delete file \'/as/you/want/client.conf\'');
console.log('To get a secret client key, use the command \'cloud-log-collector-client-key-new XXXClientNameXXX\' on the server after installation');
console.log('To revoke a secret client key, use the command \'cloud-log-collector-client-key-revoke XXXClientNameXXX\' on the server after installation');
console.log('\'XXXClientNameXXX\' must only contain A-Za-z0-9.-_');

console.log('---------------------------------------------------------------');
// process client part
console.log('Process to install Cloud Log Collector on client with magic token :');
console.log('- copy \''+config_path+"/client.conf"+'\' to the server in file \'/as/you/want/client.conf\'');
console.log('- run these commands :');
console.log('\tnpm i -g cloud-log-collector');
console.log('\tcloud-log-collector-install-client /as/you/want/client.conf');
console.log('delete file \'/as/you/want/client.conf\'');
console.log('\tCLCMagicToken="My Magic Token" CLCHostname="myhostname.com" cloud-log-collector-install-client-get-token');

console.log('---------------------------------------------------------------');
if (server_installed) {
do { q=readlineSync.question('Do you want me to install client side on this server now ? (y/n) :'); } while ((q != 'n') &&(q != 'y'));
if (q=='y') {
var hostname="";
do {
if (hostname!="")
	console.log('error - bad char in hostname !');
hostname=readlineSync.question('Server hostname in cloud-log-collector (could be different from hostname used to connect client and server) (a-zA-Z0-9.-_ only) :');
if (hostname=="")
	hostname="!";
} while (!(/^[a-zA-Z0-9\/.\-_]+$/g.test(hostname)));

var res = require('child_process').execSync("cloud-log-collector-install-client "+config_path+"/client.conf").toString();
console.log(res);
var to = require('child_process').execSync('cloud-log-collector-client-key-new '+hostname).toString();
var conf=JSON.parse(fs.readFileSync('/etc/clc/client.conf'));
conf['client']['SecretClientKey'] = to;
conf=JSON.stringify(conf,null,4);
fs.writeFileSync("/etc/clc/client.conf",conf);
console.log('Token saved in config file');



require('child_process').execSync('systemctl restart CLCServer');
require('child_process').execSync('systemctl restart CLCClient');
console.log('Done !');
}

}

console.log('Wizard end !');
}


module.exports = {
	CLCwizard: CLCwizard
}