Hadoop运维记录系列(二十一)
Zeppelin启用https过程和Hack内核以满足客户需求的记录。
原因是这客户很有意思，该客户中国分公司的人为了验证内网安全性，从国外找了一个***测试小组对Zeppelin和其他产品进行***测试，结果发现Zeppelin主要俩问题，一个是在内网没用https，一个是zeppelin里面可以执行shell命令和python语句。其实这不算大问题，zeppelin本来就是干这个用的。但是***小组不了解zeppelin是做什么的，认为即使在内网里，执行shell命令能查看操作系统的一些文件是大问题，然后发生的事就不说了，不是我们的问题了。
不过既然他们要求整改，我们也只好配合，虽然大家都觉得内网域名加https属于脱了裤子放屁，然后不让zeppelin干他本来应该干的事就更过分了，但鉴于客户是甲方，也只好hack源码了。
于是某个周末用了4个小时完成所有工作。
先记录下zeppelin加https访问，我们有自己的域名证书，所以直接用即可。如果没有域名证书，需要自签发，那么可以看第二部分，双向认证步骤。
https第一部分，已有域名添加jks：
openssl pkcs12 -export -in xxx.com.crt -inkey xxx.com.key -out xxx.com.pkcs12 keytool -importkeystore -srckeystore xxx.com.pkcs12 -destkeystore xxx.com.jks -srcstoretype pkcs12
https第二部分，自签发证书双向认证添加jks
# 生成root私钥和证书文件。 openssl genrsa -out root.key(pem) 2048 # Generate root key file openssl req -x509 -new -key root.key(pem) -out root.crt # Generate root cert file # 创建客户端私钥和证书以及证书请求文件csr openssl genrsa -out client.key(pem) 2048 # Generate client key file openssl req -new -key client.key(pem) -out client.csr # Generate client cert request file openssl x509 -req -in client.csr -CA root.crt -CAkey root.key(pem) -CAcreateserial -days 3650 -out client.crt # Use root cert to generate client cert file # 生成服务器端私钥，证书和证书请求文件csr openssl genrsa -out server.key(pem) 2048 # Generate server key file, use in Zeppelin openssl req -new -key server.key(pem) out server.csr @ Generate server cert request file openssl x509 -req -in server.csr -CA root.crt -CAkey root.key(pem) -CAcreateserial -days 3650 -out server.crt # Use root cert to generate server cert file # 生成客户端端jks文件 openssl pkcs12 -export -in client.crt -inkey client.key(pem) -out client.pkcs12 # Package to pkcs12 format, must input a password, you should remember the password keytool -importkeystore -srckeystore client.pkcs12 -destkeystore client.jks -srcstoretype pkcs12 # The client password you just input at last step # 生成服务器端jks文件 openssl pkcs12 -export -in server.crt -inkey server.key(pem) -out server.pkcs12 @ Package to pkcs12 format, must input a password, you should remember the password keytool -importkeystore -srckeystore server.pkcs12 -destkeystore server.jks -srcstoretype pkcs12 # The server password you just input at last step
如果是不需要双向认证，只要单向自签发，不创建客户端的各种就可以了。
然后找个地把这些文件放过去，再修改zeppelin配置即可。
mkdir -p /etc/zeppelin/conf/ssl cp server.crt server.jks /etc/zeppelin/conf/ssl
<property> <name>zeppelin.server.ssl.port</name> <value>8443</value> <description>Server ssl port. (used when ssl property is set to true)</description> </property> <property> <name>zeppelin.ssl</name> <value>true</value> <description>Should SSL be used by the servers?</description> </property> <property> <name>zeppelin.ssl.client.auth</name> <value>false</value> <description>Should client authentication be used for SSL connections?</description> </property> <property> <name>zeppelin.ssl.keystore.path</name> <value>/etc/zeppelin/conf/ssl/xxx.com.jks</value> <description>Path to keystore relative to Zeppelin configuration directory</description> </property> <property> <name>zeppelin.ssl.keystore.type</name> <value>JKS</value> <description>The format of the given keystore (e.g. JKS or PKCS12)</description> </property> <property> <name>zeppelin.ssl.keystore.password</name> <value>password which you input on generating server jks step</value> <description>Keystore password. Can be obfuscated by the Jetty Password tool</description> </property>
然后反代那里也加上443的ssl证书以及443转8443的upstream即可。
然后是hack zeppelin源码加入关键字限制，这个确实找了一小会zeppelin发送执行源码给interpreter的地方，zeppelin架构比较清晰，但是代码挺复杂的，用到了很多小花活儿。比如thrift，interpreter脚本里建立nc监听。然后各个解释器插件用socket跟interpreter脚本通信，前端angular，后端jetty，还用shiro做验证和授权。回头可以单开好几篇说说zeppelin安装，使用和详细配置，做这项目基本把zeppelin摸透了。
找到发送前端编写内容给interpreter的java代码，然后用很生硬的办法限制执行命令。具体那个.java文件的名字我就不说了，有悬念有惊喜。我不写java，只负责读源码找到代码位置，hack的java是同事写的。然后编译，替换jar包，完成。后面改了改配置，后续的***测试顺利通过。
static HashSet<String[]> blockedCodeString = new HashSet<>();
static {
blockedCodeString.add(new String[]{"import", "os"});
blockedCodeString.add(new String[]{"import", "sys"});
blockedCodeString.add(new String[]{"import", "subprocess"});
blockedCodeString.add(new String[]{"import", "pty"});
blockedCodeString.add(new String[]{"import", "socket"});
blockedCodeString.add(new String[]{"import", "commands"});
blockedCodeString.add(new String[]{"import", "paramiko"});
blockedCodeString.add(new String[]{"import", "pexpect"});
blockedCodeString.add(new String[]{"import", "BaseHTTPServer"});
blockedCodeString.add(new String[]{"import", "ConfigParser"});
blockedCodeString.add(new String[]{"import", "platform"});
blockedCodeString.add(new String[]{"import", "popen2"});
blockedCodeString.add(new String[]{"import", "copy"});
blockedCodeString.add(new String[]{"import", "SocketServer"});
blockedCodeString.add(new String[]{"import", "sysconfig"});
blockedCodeString.add(new String[]{"import", "tty"});
blockedCodeString.add(new String[]{"import", "xmlrpmlib"});
blockedCodeString.add(new String[]{"etc"});
blockedCodeString.add(new String[]{"boot"});
blockedCodeString.add(new String[]{"dev"});
blockedCodeString.add(new String[]{"lib"});
blockedCodeString.add(new String[]{"lib64"});
blockedCodeString.add(new String[]{"lost+found"});
blockedCodeString.add(new String[]{"mnt"});
blockedCodeString.add(new String[]{"proc"});
blockedCodeString.add(new String[]{"root"});
blockedCodeString.add(new String[]{"sbin"});
blockedCodeString.add(new String[]{"selinux"});
blockedCodeString.add(new String[]{"usr"});
blockedCodeString.add(new String[]{"passwd"});
blockedCodeString.add(new String[]{"useradd"});
blockedCodeString.add(new String[]{"userdel"});
blockedCodeString.add(new String[]{"rm"});
blockedCodeString.add(new String[]{"akka "});
blockedCodeString.add(new String[]{"groupadd"});
blockedCodeString.add(new String[]{"groupdel"});
blockedCodeString.add(new String[]{"mkdir"});
blockedCodeString.add(new String[]{"rmdir"});
blockedCodeString.add(new String[]{"ping"});
blockedCodeString.add(new String[]{"nc"});
blockedCodeString.add(new String[]{"telnet"});
blockedCodeString.add(new String[]{"ftp"});
blockedCodeString.add(new String[]{"scp"});
blockedCodeString.add(new String[]{"ssh"});
blockedCodeString.add(new String[]{"ps"});
blockedCodeString.add(new String[]{"hostname"});
blockedCodeString.add(new String[]{"uname"});
blockedCodeString.add(new String[]{"vim"});
blockedCodeString.add(new String[]{"nano"});
blockedCodeString.add(new String[]{"top"});
blockedCodeString.add(new String[]{"cat"});
blockedCodeString.add(new String[]{"more"});
blockedCodeString.add(new String[]{"less"});
blockedCodeString.add(new String[]{"chkconfig"});
blockedCodeString.add(new String[]{"service"});
blockedCodeString.add(new String[]{"netstat"});
blockedCodeString.add(new String[]{"iptables"});
blockedCodeString.add(new String[]{"ip"});
blockedCodeString.add(new String[]{"route "});
blockedCodeString.add(new String[]{"curl"});
blockedCodeString.add(new String[]{"wget"});
blockedCodeString.add(new String[]{"sysctl"});
blockedCodeString.add(new String[]{"touch"});
blockedCodeString.add(new String[]{"scala.sys.process"});
blockedCodeString.add(new String[]{"0.0.0.0"});
blockedCodeString.add(new String[]{"git"});
blockedCodeString.add(new String[]{"svn"});
blockedCodeString.add(new String[]{"hg"});
blockedCodeString.add(new String[]{"cvs"});
blockedCodeString.add(new String[]{"exec"});
blockedCodeString.add(new String[]{"ln"});
blockedCodeString.add(new String[]{"kill"});
blockedCodeString.add(new String[]{"rsync"});
blockedCodeString.add(new String[]{"lsof"});
blockedCodeString.add(new String[]{"crontab"});
blockedCodeString.add(new String[]{"libtool"});
blockedCodeString.add(new String[]{"automake"});
blockedCodeString.add(new String[]{"autoconf"});
blockedCodeString.add(new String[]{"make"});
blockedCodeString.add(new String[]{"gcc"});
blockedCodeString.add(new String[]{"cc"});
}
static boolean allMatch(String aim, String[] checker){
if(checker == null || checker.length < 1){
return false;
}else {
// by default, treat as match, every not match change it
for (String i : checker) {
if (!aim.matches(".*\\b" + i + "\\b.*")){
return false;
}
}
return true;
}
}
static String anyMatch(String aim, HashSet<String[]> all) throws Exception{
if(aim.contains("FUCK P&G")){
throw new Exception("How do you know this ????");
} else {
for (String[] one : all) {
if (allMatch(aim, one)) {
StringBuilder sb = new StringBuilder();
for (String s : one) {
sb.append(s + " ");
}
return sb.toString();
}
}
throw new Exception("No one match");
}
}
//......此处是个public类
try{
String matchesStrings = anyMatch(st, blockedCodeString);
result = new InterpreterResult(Code.ERROR, "Contains dangerous code : " + matchesStrings);
}catch (Exception me){ // no match any
scheduler.submit(job);
while (!job.isTerminated()) {
synchronized (jobListener) {
try {
jobListener.wait(1000);
} catch (InterruptedException e) {
logger.info("Exception in RemoteInterpreterServer while interpret, jobListener.wait", e);
}
}
}
if (job.getStatus() == Status.ERROR) {
result = new InterpreterResult(Code.ERROR, Job.getStack(job.getException()));
} else {
result = (InterpreterResult) job.getReturn();
// in case of job abort in PENDING status, result can be null
if (result == null) {
result = new InterpreterResult(Code.KEEP_PREVIOUS_RESULT);
}
}
}
//......直到该public类结束
因为客户有deadline限制，所以快速定位源码位置的过程还是挺有意思的，比较紧张刺激，在这个以小时计算deadline压力下，什么intelliJ, Eclipse都不好使啊，就grep和vi最好用，从找到到改完，比客户定的deadline提前了好几个小时。
