The Four Main Repositories. So does the Android platform with its API's supporting NFC. FileChannel. I've tried the following libraries but can't get either to work: YaNFS. On the NFS Attributes tab, adjust the permissions in the File permissions (mode) section to reflect who is allowed to read, write, and execute files on this share. The problem with writing is that locking of index does not work with NFS (see my other mail). listFiles() is unable to read nfs-mounted directory (MacOS X). An application hosted on an AIX 6. Experienced Java application developers want access to all the files the Internet has to offer in the same way. Today, NFS (through the pNFS extension) provides scalable access to files distributed across a network. Actually copying the file can be done via the scp utility or ssh client library (jsch would be an example of such). It allowed Unix system calls to access local UFS file systems and remote NFS file systems transparently. If a procedure in the database uses UTL_FILE needs to create a file that is accessed by external user, do you create a MOUNT from ORAWEB to ORA11 and then write to that directory. So far, I was using Samba to share the files stored on my D-Link DNS-323. master (master map) as its default primary configuration file. It is used to allows users to access files/directory across a network. Richard Marx. Simply put, i have loaded files on a web server, and the code in the. The master export table is kept in a file named /var/lib/nfs/etab. The configuration takes place at the OS level, so as far as Java is concerned, it is just another drive. The contain the same files, but use different methods to archive them. The only hard state is the stable file system image on disk. Note: The NFS volume service is available for Linux cells only. For more information, see Writing a file to your local file system and Writing a file to a remote FTP or SFTP server. In java create a java. To use the find command, at the Unix prompt, enter:. You can map the directories within your landscape / external servers. SCF resource only The 16-node Pengra cluster was procured for the OCF to provide a less restrictive development environment for PCR related work in July, 2002. CONFORMING TO SVr4, 4. The file manager will find any computers on your local area network that advertise their ability to serve files. The following are top voted examples for showing how to use org. As you can read in my post "The Docker Dilemma: Benefits and risks going into production with Docker" I'm not a fan of mounting local volumes from the Docker host into the container (mainly for security reasons) but mounting a network file system, like a NFS share, is less of a security risk. Creating an SMB share 1. Search the Community Loading. Network File System (NFS) is a distributed file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed. Uses the directory structure to do name resolution. The drive of the file server is mounted to the scheduler server (NFS). FileChannel. Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Race condition in backend/ctrl. HttpFS is a server that provides a REST HTTP gateway supporting all HDFS File System operations (read and write). console in IBM AIX 5. In PCF, a volume service provides a volume so your app can read or write to a reliable, non-ephemeral file system. WebNFS is an extension to the Network File System (NFS) for allowing clients to access a file system over the internet using a simplified, firewall-friendly protocol. They are: an overview of common operations, like adding or updating a file or directory, reading the existing entries, and dealing with. The newBufferedReader(Path, Charset) method opens a file for reading, returning a BufferedReader that can be used to read text from a file in an efficient manner. 24 thoughts on " ORA-27054: NFS file system where the file is created or resides is not mounted with correct options " saswata says: February 18, 2016 at 12:36 am Hi Adi. Unix: Issue command ls -ltra. A note for FreeBSD users. 0 through 4. You NFS NAS would appear to be running an automount rule. yml that has all the necessary configurations. java -cp commons-vfs-2. Running a NFS Test suite showed that with NFSv4, write delegation seems to fail. In Storage Gateway, a file share is a file system mount point backed by Amazon S3 cloud storage. Then rsync comes along and updates files, and my logstash just stops. Now I have an NFS service and mounted to app as the guide does. Can I add the configuration to use a NFS volume in the same hiera. When a client machine write files to the NFS mount, the other clients see the new content instantly : no problem. If read access has been explicitly granted the Celerra snapshot directory, then add */. So far, I was using Samba to share the files stored on my D-Link DNS-323. Whether flock() works across NFS is platform dependent. You can transfer the Unix files to the Windows server by using root permissions. NFS Only Works in Windows 10 Enterprise. Auto-mounting an NFS share. NFS Timeout Very rarely, you will notice that the client is spending a LONG time copying a file at the end of an integration. We highly recommend that you uninstall all older versions of Java from your system. The unshareall command is used to unshare all currently shared resources. And it is interoperable with the webhdfs REST HTTP API. Refer to Section 21. In a local filesystem, such as UFS, these attributes are stored in the file's inode, but file attributes are mapped to whatever system is used by the NFS server. foo_read_user_home_files to allow the domain to read user_home_t files; Access rights which are grouped functionally have multiple access interface calls and cannot be named after them easily. The root user can read and write. File-organization Module Here we read the file control block maintained in the directory so. Answers to some commonly asked questions about WebNFS: Why Do I Get "Permission Denied" Errors When I Try to Read My Own Files? The Java NFS client defaults the user's credential to nobody, that is, a user-id and group-id of 60001. Just a log file increases in size. As such, it does not support full Unix file system semantics. Don’t see it? Sign in to ask the community. class files, and some installation instructions. Stale NFS file handle Exception. Create a file whose permission render it unreadable on the share. To start MATLAB without Java JVM, use the command-line option -nojvm. String) method denies read access to the file. cifs command has many options. If the target file is on the Isilon mount, the tryLock() call hangs. nocto : Suppress the retrieval of new attributes when creating a file. If yes, How. Search the Community Loading. 100 % pure Java. Before you enable the use of NFS based storage for use with an IBM Spectrum Protect storage pool, review the following guidelines: Settings for NFS, the operating system, and file system can vary depending on the vendor and the implementation of the respective items. autofs uses /etc/auto. * The OS directories will be referenced only by Oracle directory name, not actual directory name. This data object has one property called "type". There are two packages in this directory. so from an explicitly specified absolute path. I will list them briefly here, followed by examples with more explanation below. …You can see on this screen that the gateway option…has defaulted to the one gateway that we have,…FileGatewayDemo. Why can't you do the same from Java (Process builder springs to mind) and then access the NFS using standard Java IO. Journaled File System or JFS is a 64-bit journaling filesystem created by IBM. You can transfer the Unix files to the Windows server by using root permissions. It's the file system that identifies the size and position of the files as well as which sectors are ready to be used. nfsxxxx files. The default is to only print information about the versions of NFS that have non-zero counts. The databases happened to be on a NetApp head, and even after rebooting the server, the locking problem would persist. The newBufferedReader(Path, Charset) method opens a file for reading, returning a BufferedReader that can be used to read text from a file in an efficient manner. HttpFS can be used to transfer data between clusters running different versions of Hadoop (overcoming RPC versioning issues), for example using Hadoop DistCP. Here are some details in my channels: Sender file adapter. EncryptUtil encrypt mypassword where mypassword is the password you want to encrypt. 08/07/2019; 5 minutes to read; In this article. You could find the source of the automount map and try to glean the info from that. One of our IBM Domino servers all of a sudden decided that it couldn’t get an exclusive lock on its database files any longer. Reading is fine from as many threads as you like - and using MMapDirectory for best performance. File Moving on Mounted Devices (NFS/ Samba) coderanch. CIFS is the network file system of Windows. In general, it sounds like there is a race condition between the writing of the XML file and the read/process/rename task. So, you can NOT use rename and expect the file to move from local to NFS volume since they are different volumes. NFS was designed as a multi-OS, lowest common denominator filesystem. This has been expanded to the size allotted by the underlying file system. The actual data payload size of each NFS READ request is equal to or smaller than the rsize setting. To redeploy your Cloud Foundry deployment with a NFS test server, do the following: Run the following. so from an explicitly specified absolute path. conf files as expected. Download gzip tar archive ; Download jar. Java temporary files - summary. The contain the same files, but use different methods to archive them. If you try to remove one of these file, and the file is still open, it will just reappear with a different number. Since its introduction in 1984, the Network File System (NFS) has become a standard for network file sharing, particularly in the UNIX® and Linux® communities. This means, that the node that is hosting the resource group mounts the file systems locally, NFS exports them, and NFS mounts them (This node becomes NFS server and NFS client at the same time. Playing back newer data with older versions of Collectl. Much of your data may already be stored on NFS servers, and now you can use NFS technology to read or write remote files directly from your Java program. When a PC-NFS client creates a new file, Data ONTAP subtracts the umask, which is a three-digit octal number you define, from 666. Each file system in this table is referred to as an exported file system, or export, for short. Issue: When I try to use, as a regular user, lp, enq or java from within some NFS mounted directories I get the following errors: lp -dxxxx yyy. Earlier this year, Amazon announced its own NFS Solution called Elastic File System, “EFS”. Clients mounting NFS filesystems report stale file handles; What are some causes of stale file handles and how can they be prevented? I am seeing application logs stating read or write operations on an NFS file, or operations on an NFS directory, complete with errno = 116 (ESTALE). HttpFS can be used to transfer data between clusters running different versions of Hadoop (overcoming RPC versioning issues), for example using Hadoop DistCP. Accessing NFS from Java. In this guide, I’ll take you through the installation of NFSv3 and NFSv4 Server on CentOS 7. You need something on the remote system to deal with your files, and that something is a server. 1:/mp on /mnt/mp type nfs (rw,relatime, [email protected]:~# systemctl stop mnt-mp. CIFS is the network file system of Windows. pdf file where. Windows: Right click on the Windows folder and choose Properties > NFS Advanced Sharing > NFS Share Permissions. checkRead(java. I other words, Domino’s nfslock was failing. This means that if I put a file in the linux shared filesystem that is owned by userA groupA, if the permissions are 660, UserB can still read the file because he is in groupA. I hope this Java temporary file tutorial has been helpful. CIFS is the standard file sharing protocol on the Microsoft. /usr/bin/enq -P xxx yyy. The problem with writing is that locking of index does not work with NFS (see my other mail). Ubuntu or Solaris, you can use command ulimit -a to find out how many open file handles per process is allowed. This file is read by rpc. Hello, An Interesting Observation: We can move files from Java using renameTo() function, one of my solution is distributed in 3 tiers. For configuring a secure NFS share, you should read our article Configure a Kerberized NFS Server in RHEL 7. To start MATLAB without Java JVM, use the command-line option -nojvm. Access to NFS file systems requires UNIX-style user and group identities, which are not the same as Windows user and group identities. master (master map) as its default primary configuration file. Network File System (NFS) The Network File System is the protocol of choice to share files over an internal Local Area Network. The NFS server is configured via the file-servers. This document assumes that the reader has a general understanding of general components and node types in an HDFS cluster. Unfortunately I could not find many examples on this topic. The net effect is the same as it was in the 7-Mode example: one client can mount /dir1 read/write, while the second client can mount /dir1/subdir read-only. 6 we can provide read only access to the shared files i. We have a cluster of 2 servers that execute searches and one server in the back end that writes to the index. We highly recommend that you uninstall all older versions of Java from your system. IOException: Stale NFS file handle at java. The newBufferedReader(Path, Charset) method opens a file for reading, returning a BufferedReader that can be used to read text from a file in an efficient manner. RandomAccessFile. Enabling NFS on a server and client allows the client to mount a remote filesystem. A classical NFS server maintains no in-memory hard state. In Storage Gateway, a file share is a file system mount point backed by Amazon S3 cloud storage. Lastly, you should double-check that you have the same SSH key and have SSHed onto every node from the node that you’re running the program at least once. Operation For each NFS client or server machine to be monitored, rpc. Once they are all read, the lock is released. The code is appended below. 3 System from within a Java application. NFS refer to Network File System. I think the. see technet here:. The following are top voted examples for showing how to use org. Finally, define the pod:. This allows you to browse to the server using Windows Explorer or create a Network Place, for example. Getting NFS File Systems to Be Mounted at Boot Time. Currently Azure NetApp Files feature isn't deployed in all Availability zones in an Azure region. The /etc/rwtab file defines which files and directories on the read-only root file system are replaced by which files on the state and scratch file systems for each system instance. It’s also possible to mount your share just on demand. Tuning Windows 2012 – File System, Part 2 In the first article about tuning the Windows 2012 File System, we focused on the SMB model. So this gets a bit complicated. A note for FreeBSD users. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. However, this NFS share is not secured and anyone can write on this directory. JFtp is a graphical Java network and file transfer client. Ubuntu Linux: NFS Client Configuration To Mount NFS Share NFS (Network File System) client allows you to access shared directory from Linux client. NFS is not designed for the massive file sizes that HDFS can store, so you need to be careful. When using local mode (using mapreduce. Hi, You can create the export folder, you will need to provide the clients the permission to access the host server machine. Richard Marx. There is no way to identify yourself, to prove your identity, or to limit your read/write access to a given set of files or directories. Today, NFS (through the pNFS extension) provides scalable access to files distributed across a network. The master export table is kept in a file named /var/lib/nfs/etab. Java Microservices the challenge in this approach is that it requires to setup virtual on-premises file server which acts as the file system interface for the NFS mount. It's also important enough that the developers of Debian, and Ubuntu in turn, have made NFS file sharing very simple. Apple has its own set of ISO9660 extensions. Hi I am using java WebNFS package provided by sun to access the remote file system from java class. It can read the file systems HFS (Mac OS Standard), HFS+ (Mac OS Extended) and HFSX (Mac OS Extended with case sensitive file names). But the free ArcSight Logger L750MB only allow you File Receiver through a local share. risze is read size and wsize is write size. NFS FILE OPERATIONS 9. SPECjvm2008 [ benchmark info] [ published results] [ support ] [ download benchmark] SPECjvm2008 is a benchmark suite for measuring the performance of a Java Runtime Environment (JRE), containing several real life applications and benchmarks focusing on core java functionality. I don't expect any network file system to perform as well as a local one, but a factor of 3 or 4 really makes this really unusable. Table of Contents Project Structure Read file using ClassLoader. (Requiring the NFS share to be previously mounted Stack Overflow. nfsXXXX (xxx being a hexadecimal number) appearing in its working directory, where the application writes hourly files and later moves them to a different filename. If you want to experiment with volume mounts, you can deploy a NFS test server using the enable-nfs-test-server. POSIX allows a read() that is interrupted after reading some data to return -1 (with errno set to EINTR) or to return the number of bytes already read. This topic describes how Pivotal Cloud Foundry (PCF) app developers can read and write to a mounted file system from their apps. Next I tried the block of code that is found in lots of articles about ORA-29283: declare f utl_file. The method name "main" is not a keyword in the Java language. The rather more helpful, but longer answer is that there are several workarounds, briefly summarised as NFS and copyToLocal: NFS: it is possible to mount the HDFS system using the NFS Gateway. Try killing them off to free mount point. Experienced Java application developers want access to all the files the Internet has to offer in the same way. So, I have a file input clause, and logstash is actively reading files from an NFS share. Any suggestions/Another methods to read files from NFS? Thanks! java nfs nfsclient. nfs, umount. 2 which intermittently throws FileNotFoundException's on files that definitely exist on an NFS mounte Java app server intermittently throws FileNotFoundException on files found on NFS. Read permissions for files. It is useful when you usually access files of Windows on. it is possible that an application and the NFS filesystem may end up with different ideas about what a file contains - which means file corruption from the point of view of an application. Network File System (NFS) uses a client-server architecture, which allows sharing files between a number of machines on a network as if they were located locally, providing a standardized view. This will allow anyone operating a PC with Linux or OS X to access the server. Inheriting Hadoop Cluster Configuration. If you try to remove one of these file, and the file is still open, it will just reappear with a different number. Red Hat Enterprise Linux 5 The nfs-utils package provides a daemon for the kernel Network File System (NFS) server, and related tools such as the mount. Java can also access FTP, HTTP and SSH resources, but not through the File interface. mountd in nfs-utils after 1. The Server Manager window appears. Clustered Data ONTAP® 8. What are these files? Is it an indication of something gone wrong?. Hi Everyone, Is it possible to read and write a file at remote server? I use utl_file_fopen, get_line, put_line and it seem the program can't find the fiile or directory (ora-29283) Due to our system upgrade, our database server and application server are separated, right now my pl/SQL program could not read the file in the remote server. file package supports channel I/O, which moves data in buffers, bypassing some of the layers that can bottleneck stream I/O. file} package defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems. Samba is an implementation of the Server Message Block /Common Internet File System protocol for Unix systems, providing support for cross-platform file and printer sharing with Microsoft Windows, OS X, and other Unix systems. The rather more helpful, but longer answer is that there are several workarounds, briefly summarised as NFS and copyToLocal: NFS: it is possible to mount the HDFS system using the NFS Gateway. Introduction to Network File System Introduction to NFS. Running a NFS Test suite showed that with NFSv4, write delegation seems to fail. WinNFSd is a Network File System (NFS) server for Windows. It was written to improve the performance of the Windows 7 NFS client , but it will work with any NFS client. NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC) system. This allows you to browse to the server using Windows Explorer or create a Network Place, for example. NFS Performance Tuning Guidelines, and 2. NFS v4 server is causing stale file handle, but only when bind mount is a subdirectory Hot Network Questions How are astronauts in the ISS protected from electric shock?. When starting, it iterates through these files and notifies the peer rpc. Following are some of the key differences: 1. autofs uses /etc/auto. precision=0 using noatime option when mounting nfs. Any suggestions/Another methods to read files from NFS? Thanks! java nfs nfsclient. When using jdk1. Network File System (NFS) has been around since 1984, but it continues to evolve and provide the basis for distributed file systems. isSystemWindows(). This article details some known issues with the Network File System (NFS) implementations that affect the reliability of data stored on such file systems by the WebSphere Application Server transaction, activity and compenstation services and the Service Integration Bus filestore. One is a jar file and the other is a gzip compressed tar file. Today, NFS (through the pNFS extension) provides scalable access to files distributed across a network. For more information see the: 2002 Linux Project Report. IOException: Stale NFS file handle: Date: Wed, 26 Apr 2006 16:30:40 GMT: Steve, There are some locks involved in search, like the one that gets written to the FS before the readers reads all the segment/index files listed in segments file. muCommander is a Java based File Explorer alternative for Windows 10 which provides two panes, tabbed interface, work with local volumes and servers & offers pleothra of keyboard of shortucts as well. My nfs has tag heap-dump. c in the NFS client implementation in the Linux kernel 2. If a new file is found, it is processed and then renamed as a backup file. java -cp commons-vfs-2. Create a file whose permission render it unreadable on the share. The following are top voted examples for showing how to use org. Search the Community Loading. An implementation for the Linux kernel is available as free software under the terms of the GNU General Public License (GPL). In general, it sounds like there is a race condition between the writing of the XML file and the read/process/rename task. The configuration takes place at the OS level, so as far as Java is concerned, it is just another drive. So I searched all the methods to copy a File in Java, even. NFSクライアントマシンの不測なクラッシュに備えた同期書き込みを目的にnoacオプションでマウントしていた場合、JavaレイヤでのバッファリングはNFSレイヤでの同期書き込みの意味をなくし、データ損失の可能性を高めるため注意が必要です。. * The OS directories will be referenced only by Oracle directory name, not actual directory name. The Apache Tika™ toolkit detects and extracts metadata and text from over a thousand different file types (such as PPT, XLS, and PDF). Note: The NFS volume service is available for Linux cells only. This byte array can be used to pass through network as well as other program APIs for further processing. The maximum number of bytes in each network READ request that the NFS client can receive when reading data from a file on an NFS server. However, there is an important limitation: a maximum of 16 groups are passed from the client to the server, and, if a user is member of more than 16 groups on the client, some files or directories might be unexpectedly inaccessible. Any non-directory file created by a Java application is guaranteed to be a normal file. the issue seen in specific files such as Java library file(s) rather than the whole mount. There have been a few reported problems with NFS, but all of them have been resolved as NFS configuration problems, for example: - an NFS system not configured to permit writing large files - user-specific disk quotas on an NFS-mounted disk - a very small value configured for NFS write buffer size (problem went away when write buffer size. Download gzip tar archive ; Download jar. Supports TCP & UDP protocols. Depending on your needs, you may also want to use Samba or the SSH Filesystem additionally or instead. Operation For each NFS client or server machine to be monitored, rpc. This topic describes how Pivotal Cloud Foundry (PCF) app developers can read and write to a mounted file system from their apps. HttpFS can be used to transfer data between clusters running different versions of Hadoop (overcoming RPC versioning issues), for example using Hadoop DistCP. Azure NetApp Files offers export policy: you can control the allowed clients, the access type (Read&Write, Read Only, etc. Access (Read_Only, Read_Write): This setting specifies the source NFS client access. So I searched all the methods to copy a File in Java, even. Azure Storage includes Azure Blobs (objects), Azure Data Lake Storage Gen2, Azure Files, Azure Queues, and Azure Tables. nfs, umount. Automatic Storage Management (ASM) in Oracle Database 10g. The TZUpdater tool is provided to allow you to update installed Java Development Kit (JDK) and Java Runtime Environment (JRE) software with more recent timezone data, to accommodate daylight saving time (DST) changes in different countries. File and related functionality. The NFS path should be a path that's exported by the NFS server, or a subdirectory of that path. I think i'am having a problem due to the same cause: logstash reads log files over NFS, everything seems to work fine on startup but then those files end up with one line full af 'NUL' characters and logstash stops reading the files (but the files are still being updated). To install, download jdk-6u14-windows-ia64. When mounting a file system via NFS, Red Hat Enterprise Linux uses NFSv4 by default, if the server supports it. No Java code must be written or configured to get data directly into the cluster. 08/07/2019; 5 minutes to read; In this article. Is that good or bad?. Simultaneous appends locally are nicely interleaved, since the OS knows the file is opened in append mode, and atomically seeks to the current end of file before each write call, regardless of other processes that may have extended the file in the meanwhile. Operation For each NFS client or server machine to be monitored, rpc. ' Of course, we really want to share to virginia and fairfax as well, so we would probably use this command: # share -F nfs -o rw=georgia,virginia,fairfax /var/mail. 100 % pure Java. 7, this method delegates to boolean java. Network File System (NFS) The Network File System is the protocol of choice to share files over an internal Local Area Network. It runs a few hundred VMs or so and one of the VMs is a file server. In your case i guess you need to pick only. The classes for this, both the generic and the NFS3-specific versions, are in the package com. Hello, An Interesting Observation: We can move files from Java using renameTo() function, one of my solution is distributed in 3 tiers. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : 1. Azure Files has been built from the ground up to be always available. Type the text into the nano editor. The Four Main Repositories. Network computer vendors have realized that network file systems can add a powerful capability to their products. 24 thoughts on “ ORA-27054: NFS file system where the file is created or resides is not mounted with correct options ” saswata says: February 18, 2016 at 12:36 am Hi Adi. The existing standard library methods like open(), close(), fread(), etc. saxon via ibm-aix-l wrote: > > > > > Reading old mail. 6 allows attackers to cause a denial of service (crash) via an NFS mount of a directory from a client whose reverse DNS lookup name is different from the forward lookup name. Azure Storage includes Azure Blobs (objects), Azure Data Lake Storage Gen2, Azure Files, Azure Queues, and Azure Tables. Here is a Java Files. Need for Speed: Heat is the twenty-ninth game in the Need for Speed series, and the fourth developed by Ghost Games. setup a process "upstream" of the SFTP server that also sends files to HDFS. Recently, I saw a lot of. Network File System (NFS) is a network file system protocol originally developed by Sun Micro systems in 1984, allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed. VMFS is a clustered file system when used to present to multiple hosts from a shard disk array (passing the same LUN to multiple hosts). Richard Marx. Automatic Database Diagnostic Monitor (ADDM) Enhancements in Oracle Database 11g Release 1 - Management and reporting of ADDM tasks has been simplified in Oracle Database 11g with the introduction of the DBMS_ADDM package. @drrushi I interpreted the same, but I couldn't make nfs work with dfs. File Receiver Configuration. Hello, An Interesting Observation: We can move files from Java using renameTo() function, one of my solution is distributed in 3 tiers. Subject: java. The Network File System (NFS) is designed to be portable. , no server-maintained file offsets: read and write requests must explicitly transmit the byte offset for each operation. The manual page flock(2) had been out of date for a long time, but has since been updated to say (emphasis mine):. This is similar to a previously reported and fixed Bug 429755. In PCF, a volume service provides a volume so your app can read or write to a reliable, non-ephemeral file system. 2 LTS) then this post might help you as well and can save your lots of precious time. txt is required to provide the boot commands and boot arguments. Open a command prompt with administrative rights. The only hard state is the stable file system image on disk. samba_domain_controller (Samba) Allow samba to act as the domain controller, add users, groups and change passwords samba_export_all_ro (Samba) Allow Samba to share any file/directory read only samba_export_all_rw (Samba) Allow Samba to share any file/directory read/write webadm_manage_users_files (HTTPD.