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WoooHaaaa's questions

Martin Hope
WoooHaaaa
Asked: 2014-04-29 03:00:38 +0800 CST
  • 13

I want to sync Server1 and Server2's logs to LogServer.

For Server1:

rsync -avz -e 'ssh -p 2188' user@server1:/usr/local/servers/logs/* /usr/local/logs/

This one works, but for Server2:

rsync -avz -e 'ssh -p 2188' user@server2:/usr/local/servers/logs/* /usr/local/logs/

It fails:

shell-init: error retrieving current directory: getcwd: cannot access parent directories: no such file or directory
job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: no such file or directory
job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: no such file or directory
rsync: getcwd(): No such file or directory (2)
rsync error: errors selecting input/output files, dirs (code 3) at util.c(992) [sender=3.0.6]
rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(600) [receiver=3.0.6]

Both Server1 and Server2 is hosted on Amazon with the same version of rsync.

I am quite sure that every directory in the command is exists. How can I solve this problem?

UPDATE: I have tried ssh -p 2188 user@server2 pwd, and it doesn't work:

shell-init: error retrieving current directory: getcwd: cannot access parent directories: no such file or directory

job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: no such file or directory

Screenshot

enter image description here

linux
Martin Hope
WoooHaaaa
Asked: 2013-10-25 22:37:43 +0800 CST
  • -2

I have a fully new install nagios, but I can't access to it.

Here's my Nginx config:

server{
    listen 80;
    server_name  [redacted];

    # blahblah

    # Nagios Monitoring
    location /nagios3/ {
      proxy_pass  http://127.0.0.1:80;
    }
}

Nagios is installed step by step(From this Linode guide):

sudo apt-get install -y nagios3

Then I try to visit http://ip-address/nagios3/, but it shows 502 bad gateway. How do I deal with this ?

This is my /var/log/syslog:

Oct 25 14:18:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;1;DISK WARNING - free space: /boot 43 MB (20% inode=99%):
Oct 25 14:19:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;1;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time
Oct 25 14:19:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;2;DISK WARNING - free space: /boot 43 MB (20% inode=99%):
Oct 25 14:20:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;2;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time
Oct 25 14:20:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;3;DISK WARNING - free space: /boot 43 MB (20% inode=99%):
Oct 25 14:21:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;3;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time
Oct 25 14:21:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;HARD;4;DISK WARNING - free space: /boot 43 MB (20% inode=99%):
Oct 25 14:21:17 my-server nagios3: SERVICE NOTIFICATION: root;localhost;Disk Space;WARNING;notify-service-by-email;DISK WARNING - free space: /boot 43 MB (20% inode=99%):
Oct 25 14:21:17 my-server postfix/pickup[24474]: 4F89F394034C: uid=109 from=<nagios>
Oct 25 14:21:17 my-server postfix/cleanup[27756]: 4F89F394034C: message-id=<20131025062117.4F89F394034C@my-server>
Oct 25 14:21:17 my-server postfix/qmgr[24475]: 4F89F394034C: from=<nagios@[email protected]>, size=594, nrcpt=1 (queue active)
Oct 25 14:21:17 my-server postfix/local[27758]: 4F89F394034C: to=<root@localhost>, relay=local, delay=0.15, delays=0.11/0/0/0.04, dsn=2.0.0, status=sent (delivered to mailbox)
Oct 25 14:21:17 my-server postfix/qmgr[24475]: 4F89F394034C: removed
Oct 25 14:22:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;HARD;4;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time
Oct 25 14:22:07 my-server nagios3: SERVICE NOTIFICATION: root;localhost;HTTP;WARNING;notify-service-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time
Oct 25 14:22:07 my-server postfix/pickup[24474]: 219CA3940381: uid=109 from=<nagios>
Oct 25 14:22:07 my-server postfix/cleanup[27756]: 219CA3940381: message-id=<20131025062207.219CA3940381@my-server>
Oct 25 14:22:07 my-server postfix/qmgr[24475]: 219CA3940381: from=<nagios@[email protected]>, size=605, nrcpt=1 (queue active)
Oct 25 14:22:07 my-server postfix/local[27758]: 219CA3940381: to=<root@localhost>, relay=local, delay=0.12, delays=0.07/0/0/0.05, dsn=2.0.0, status=sent (delivered to mailbox)
Oct 25 14:22:07 my-server postfix/qmgr[24475]: 219CA3940381: removed
Oct 25 14:39:01 my-server CRON[28242]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete)

And there're lot of 127.0.0.1 visit in nginx log, but I actually visit from a external ip:

127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3      0.0.1599.69 Safari/537.36"
127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3      0.0.1599.69 Safari/537.36"
127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3      0.0.1599.69 Safari/537.36"
ubuntu
Martin Hope
WoooHaaaa
Asked: 2013-10-19 01:59:43 +0800 CST
  • 0

I am warned from my VPS provider that my server sends a lot of SSH SYN Attack to other servers, but I have no idea how to deal with it.

Here's the detail my provider sent me:

enter image description here

  1. Where can I find the logs that record all of these attack in my server?
  2. How do I deal with this (find the script that send these request) step by step ?
vps
Martin Hope
WoooHaaaa
Asked: 2013-09-06 02:12:06 +0800 CST
  • 115

What I want to do is: When someone visits http://localhost/route/abc the server responds exactly the same as http://localhost:9000/abc

Now I configure my Nginx server like this:

location /route {
    proxy_pass  http://127.0.0.1:9000;
}

The HTTP request is dispatched to port 9000 correctly, but the path it receives is http://localhost:9000/route/abc not http://localhost:9000/abc.

Any suggestions?

nginx
Martin Hope
WoooHaaaa
Asked: 2013-06-25 16:46:44 +0800 CST
  • 4

I have a Linode VPS that I setup OpenVPN server on it. Since I'm in China we have to deal with the GFW (Great Firewall), so I use the VPN a lot.

The weird part is, that every time I use it, I need to change OpenVPN server's connection or I can't connect successfully.

I don't know if it's my installation problem or just caused by the GFW, but I've never heard of GFW blocking a port?

vpn
Martin Hope
WoooHaaaa
Asked: 2013-04-20 02:56:30 +0800 CST
  • 6

I want to setup a anonymous only ftp server (able to upload files). Here is my config file:

listen=YES

anonymous_enable=YES
anon_root=/var/www/ftp

local_enable=YES
write_enable=YESr.

anon_upload_enable=YES
anon_mkdir_write_enable=YES

xferlog_enable=YES
connect_from_port_20=YES

chroot_local_user=YES

dirmessage_enable=YES
use_localtime=YES
secure_chroot_dir=/var/run/vsftpd/empty
rsa_cert_file=/etc/ssl/private/vsftpd.pem
pam_service_name=vsftpd

But when i try to connect it:

kan@kan:~$ ftp yxxxng.bej
Connected to yxxx.
220 (vsFTPd 2.3.5)
Name (yxxxg.bej:kan): anonymous
331 Please specify the password.
Password:
500 OOPS: vsftpd: refusing to run with writable root inside chroot()
Login failed
Can anyone help ?
linux
Martin Hope
WoooHaaaa
Asked: 2013-02-19 02:56:03 +0800 CST
  • 1

I've setup my OpenVPN server and client before and it works perfect last month.

But now i can't connect to the server without any config changing.

Here's the cilent side log(Win7):

Mon Feb 18 08:26:06 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Feb 18 08:26:06 2013 Re-using SSL/TLS context
Mon Feb 18 08:26:06 2013 LZO compression initialized
Mon Feb 18 08:26:06 2013 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 08:26:06 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Mon Feb 18 08:26:06 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 08:26:06 2013 Local Options hash (VER=V4): '41690919'
Mon Feb 18 08:26:06 2013 Expected Remote Options hash (VER=V4): '530fdded'
Mon Feb 18 08:26:06 2013 UDPv4 link local: [undef]
Mon Feb 18 08:26:06 2013 UDPv4 link remote: 106.187.96.123:1194
Mon Feb 18 08:27:06 2013 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Mon Feb 18 08:27:06 2013 TLS Error: TLS handshake failed
Mon Feb 18 08:27:06 2013 TCP/UDP: Closing socket
Mon Feb 18 08:27:06 2013 SIGUSR1[soft,tls-error] received, process restarting
Mon Feb 18 08:27:06 2013 Restart pause, 2 second(s)
Mon Feb 18 08:27:08 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Feb 18 08:27:08 2013 Re-using SSL/TLS context
Mon Feb 18 08:27:08 2013 LZO compression initialized
Mon Feb 18 08:27:08 2013 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 08:27:08 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Mon Feb 18 08:27:08 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 08:27:08 2013 Local Options hash (VER=V4): '41690919'
Mon Feb 18 08:27:08 2013 Expected Remote Options hash (VER=V4): '530fdded'
Mon Feb 18 08:27:08 2013 UDPv4 link local: [undef]
Mon Feb 18 08:27:08 2013 UDPv4 link remote: 106.187.96.123:1194
Mon Feb 18 08:28:08 2013 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Mon Feb 18 08:28:08 2013 TLS Error: TLS handshake failed
Mon Feb 18 08:28:08 2013 TCP/UDP: Closing socket
Mon Feb 18 08:28:08 2013 SIGUSR1[soft,tls-error] received, process restarting
Mon Feb 18 08:28:08 2013 Restart pause, 2 second(s)
Mon Feb 18 08:28:10 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Feb 18 08:28:10 2013 Re-using SSL/TLS context
Mon Feb 18 08:28:10 2013 LZO compression initialized
Mon Feb 18 08:28:10 2013 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 08:28:10 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Mon Feb 18 08:28:10 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 08:28:10 2013 Local Options hash (VER=V4): '41690919'
Mon Feb 18 08:28:10 2013 Expected Remote Options hash (VER=V4): '530fdded'
Mon Feb 18 08:28:10 2013 UDPv4 link local: [undef]
Mon Feb 18 08:28:10 2013 UDPv4 link remote: 106.187.96.123:1194

And this is the server side:

Mon Feb 18 00:43:19 2013 114.249.236.187:26913 SIGUSR1[soft,tls-error] received, client-instance restarting
Mon Feb 18 00:43:21 2013 MULTI: multi_create_instance called
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 Re-using SSL/TLS context
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 LZO compression initialized
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 Local Options hash (VER=V4): '530fdded'
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 Expected Remote Options hash (VER=V4): '41690919'
Mon Feb 18 00:43:21 2013 114.249.236.187:26854 TLS: Initial packet from 114.249.236.187:26854, sid=d04721a3 d361dccf
Mon Feb 18 00:44:21 2013 114.249.236.187:26854 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Mon Feb 18 00:44:21 2013 114.249.236.187:26854 TLS Error: TLS handshake failed
Mon Feb 18 00:44:21 2013 114.249.236.187:26854 SIGUSR1[soft,tls-error] received, client-instance restarting
Mon Feb 18 00:44:23 2013 MULTI: multi_create_instance called
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 Re-using SSL/TLS context
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 LZO compression initialized
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 Local Options hash (VER=V4): '530fdded'
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 Expected Remote Options hash (VER=V4): '41690919'
Mon Feb 18 00:44:23 2013 114.249.236.187:26855 TLS: Initial packet from 114.249.236.187:26855, sid=d46a451d f7d88d11
Mon Feb 18 00:45:23 2013 114.249.236.187:26855 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Mon Feb 18 00:45:23 2013 114.249.236.187:26855 TLS Error: TLS handshake failed
Mon Feb 18 00:45:23 2013 114.249.236.187:26855 SIGUSR1[soft,tls-error] received, client-instance restarting
Mon Feb 18 00:45:25 2013 MULTI: multi_create_instance called
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 Re-using SSL/TLS context
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 LZO compression initialized
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 Local Options hash (VER=V4): '530fdded'
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 Expected Remote Options hash (VER=V4): '41690919'
Mon Feb 18 00:45:25 2013 114.249.236.187:26925 TLS: Initial packet from 114.249.236.187:26925, sid=34f4dc94 f7092f67
Mon Feb 18 00:46:25 2013 114.249.236.187:26925 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Mon Feb 18 00:46:25 2013 114.249.236.187:26925 TLS Error: TLS handshake failed
Mon Feb 18 00:46:25 2013 114.249.236.187:26925 SIGUSR1[soft,tls-error] received, client-instance restarting
Mon Feb 18 00:46:27 2013 MULTI: multi_create_instance called
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 Re-using SSL/TLS context
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 LZO compression initialized
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 Local Options hash (VER=V4): '530fdded'
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 Expected Remote Options hash (VER=V4): '41690919'
Mon Feb 18 00:46:27 2013 114.249.236.187:26926 TLS: Initial packet from 114.249.236.187:26926, sid=3dfa89e1 b1ff7f3a
^C
[root@li460-123 openvpn]#

Could anyone help ?

ssl