webserver apache 2.2.22-7/ apache webdav / redhat 6.3

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问题1：Failed to resolve server name for 10.24.41.161 (check DNS)   /   RedHat 6.3 64位系统 / apache http 2.2.22-7

[davadmin@sctsdemo webroot]$ /opt/apache/bin/httpd -k start

 [Wed Aug 23 21:31:06 2017] [error] (EAI 2)Name or service not known: Failed to resolve server name for 10.24.41.161 (check DNS) -- or specify an explicit ServerName

解决1：

新增配置 /etc/hosts 自解析DNS的ip地址即可。

问题2：使用root赋权davadmin用户使用apache整个目录，准备启动apache 2.2.22-7，报错如下：

[davadmin@sctsdemo logs]# chown -R davadmin.davadmin /opt/apache
[davadmin@sctsdemo logs]# chmod 755 -R /opt/apache
[davadmin@sctsdemo logs]# su - davadmin
[davadmin@sctsdemo logs]$ id
uid=504(davadmin) gid=504(davadmin) groups=504(davadmin) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[davadmin@sctsdemo logs]$ /opt/apache/bin/httpd -k start
(13)Permission denied: make_sock: could not bind to address [::]:80
(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs

解决2：

Linux普通用户使用sudo权限启停apache服务

http://www.cnblogs.com/abclife/p/5028885.html

sudo的工作过程如下：
1，用户执行sudo时，系统会主动寻找/etc/sudoers文件，判断该用户是否有执行sudo的权限
2，确认用户具有可执行sudo的权限后，让用户输入密码确认
3，若密码输入成功，则开始执行sudo后续的命令
4，root执行sudo时不需要输入密码(对应配置文件中"root ALL=(ALL) ALL"这样一条规则)
5，若欲切换的身份与执行者的身份相同，也不需要输入密码

使用VIM编辑/etc/sudoers，或者直接使用visudo编辑sudo规则
添加一条规则：
user01 ALL=(root) /etc/init.d/httpd

如果不想每次都要输入密码，可以进行以下设置：
user01 ALL=(root)NOPASSWD: /etc/init.d/httpd

修改范例二

# tangxje start 20170824
davadmin ALL=(root)NOPASSWD:  /opt/apache/bin/httpd
# tangxje end 20170824

Redhat 6.3 64位关闭SELinux和防火墙的办法

http://blog.csdn.net/superbfly/article/details/49125125

Redhat使用了SELinux来增强安全，关闭的办法为：
1. 永久有效
修改 /etc/selinux/config 文件中的 SELINUX="" 为 disabled ，然后重启。
2. 即时生效
setenforce 0

关闭防火墙的方法为：
1. 永久性生效
开启：chkconfig iptables on
关闭：chkconfig iptables off
2. 即时生效，重启后失效
开启：service iptables start
关闭：service iptables stop

需要说明的是对于 Linux 下的其它服务都可以用以上命令执行开启和关闭操作

补充：
a. 防火墙还需要关闭ipv6的防火墙：
chkconfig ip6tables off
并且可以通过如下命令查看状态：
chkconfig --list iptables
b. selinux状态可以通过以下命令查看：
sestatus

[root@sctsdemo opt]# more /etc/hosts

 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
 127.0.0.1 sctsdemo sctsdemo.cnsuning.com
 10.24.41.161 sctsdemo sctsdemo.cnsuning.com  此为新增配置

Linux下不重启永久修改hostname /  适用于RedHat 6.3 / CentOS 6.3系统，不适用于RedHat 7.3 / CentOS 7.3系统
http://blog.csdn.net/sz_bdqn/article/details/46554717
Linux下不重启永久修改hostname
1、如果只是修改hostname可以通过如下命令
hostname newHostname
注意：这种修改方式只有当前有效，等服务器重启后hostname就会失效，回到原来的hostname。
2、如果需要永久修改hostname可通过如下命令
vi /etc/sysconfig/network
修改其中的HOSTNAME项，不过此种方法需要重启后生效。
3、于是在不重启又能永久修改hostname的方式是结合上述两种，这样便能做到不用重启当前也生效，重启后也生效。

使用 Apache Jackrabbit 实现 WebDAV 客户端

https://www.ibm.com/developerworks/cn/java/j-lo-jackrabbit/

 import java.io.FileInputStream;
 import java.io.IOException;

 import org.apache.commons.httpclient.Credentials;
 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.StatusLine;
 import org.apache.commons.httpclient.UsernamePasswordCredentials;
 import org.apache.commons.httpclient.auth.AuthScope;
 import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
 import org.apache.commons.httpclient.methods.RequestEntity;
 import org.apache.jackrabbit.webdav.DavConstants;
 import org.apache.jackrabbit.webdav.DavException;
 import org.apache.jackrabbit.webdav.MultiStatus;
 import org.apache.jackrabbit.webdav.MultiStatusResponse;
 import org.apache.jackrabbit.webdav.client.methods.CopyMethod;
 import org.apache.jackrabbit.webdav.client.methods.DavMethod;
 import org.apache.jackrabbit.webdav.client.methods.DeleteMethod;
 import org.apache.jackrabbit.webdav.client.methods.LockMethod;
 import org.apache.jackrabbit.webdav.client.methods.MkColMethod;
 import org.apache.jackrabbit.webdav.client.methods.MoveMethod;
 import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;
 import org.apache.jackrabbit.webdav.client.methods.PutMethod;
 import org.apache.jackrabbit.webdav.client.methods.UnLockMethod;
 import org.apache.jackrabbit.webdav.lock.Scope;
 import org.apache.jackrabbit.webdav.lock.Type;

 public class DavClient {

     public static void main(String [] args) throws IOException, DavException {

         HttpClient client = new HttpClient();
         Credentials creds = new UsernamePasswordCredentials("admin", "passw0rd");
         client.getState().setCredentials(AuthScope.ANY, creds);

         // MKCOL method - 新建目录
         DavMethod mkCol = new MkColMethod("http://127.0.0.1/uploads/test");
         client.executeMethod(mkCol);

         int statusCode = mkCol.getStatusCode();
         String statusText = mkCol.getStatusText();
         StatusLine statusLine = mkCol.getStatusLine();
         System.out.println("mkcol test folder:" + statusCode + " " + statusText);
         System.out.println(statusLine.toString());

         // Put Method - 上传本地文件
         PutMethod put = new PutMethod("http://127.0.0.1/uploads/test/lena.jpg");
         RequestEntity requestEntity = new InputStreamRequestEntity(new FileInputStream("lena.jpg"));
         put.setRequestEntity(requestEntity);
         client.executeMethod(put);
         System.out.println("put image file:" + put.getStatusCode() + " " + put.getStatusText());

         // CopyMethod(String uri, String destinationUri, boolean overwrite) - 远程拷贝本文
         DavMethod copy = new CopyMethod("http://127.0.0.1/uploads/test/lena.jpg",
                 "http://127.0.0.1/uploads/test/lena2.jpg", true);
         client.executeMethod(copy);
         System.out.println("copy image file:" + copy.getStatusCode() + " " + copy.getStatusText());

         //MoveMethod(String uri, String destinationUri, boolean overwrite) - 远程重命名文件
         DavMethod move = new MoveMethod("http://127.0.0.1/uploads/test/lena.jpg",
                 "http://127.0.0.1/uploads/test/lena3.jpg", true);
         client.executeMethod(move);
         System.out.println("move image file:" + move.getStatusCode() + " " + move.getStatusText());

         //LockMethod(String uri, Scope lockScope, Type lockType, String owner, long timeout, boolean isDeep) - 文件加锁操作
         LockMethod lock = new LockMethod("http://127.0.0.1/uploads/test/lena.jpg", Scope.SHARED, Type.WRITE, "admin",
                 10000l, false);
         client.executeMethod(lock);
         String lockToken = lock.getLockToken();
         System.out.println("lock image file:" + lock.getStatusCode() + " " + lock.getStatusText());

         //UnLockMethod(String uri, String lockToken) - 文件解锁操作
         DavMethod unlock = new UnLockMethod("http://127.0.0.1/uploads/test/lena.jpg", lockToken);
         client.executeMethod(unlock);
         System.out.println("unlock image file:" + unlock.getStatusCode() + " " + unlock.getStatusText());

         // Find Method - 查找文件操作
         DavMethod find = new PropFindMethod("http://127.0.0.1/uploads/test/", DavConstants.PROPFIND_ALL_PROP,
                 DavConstants.DEPTH_1);
         client.executeMethod(find);
         MultiStatus multiStatus = find.getResponseBodyAsMultiStatus();
         MultiStatusResponse [] responses = multiStatus.getResponses();
         System.out.println("Folders and files:");
         for (int i = 0; i < responses.length; i++) {
             System.out.println(responses[i].getHref());
         }

         // Delete Method - 删除远程文件
         DavMethod delete = new DeleteMethod("http://127.0.0.1/uploads/test/");
         client.executeMethod(delete);
         System.out.println("delete test folder:" + delete.getStatusCode() + " " + delete.getStatusText());

     }

 }

[davadmin@sctspreapp03 testwa-cst]$ more /data/find.txt
移走文件服务器里文件夹大于300天的，减少磁盘空间
/opt/webdav/files/snapshot
/opt/webdav/files/testwa-cst
# find ./ -maxdepth 1 -mtime +300 -type d | xargs -I {} mv {} /data/snapshot300day/

end