10.32/10.33 rsync synchronizes 10.34 Linux system logs through Services 10.35 screen tool

[Email protected] ~]# Mkdir/tmp/rsync
[Email protected] ~]# chmod 777/tmp/rsync

A second machine

[Email protected] ~]# Rsync-avp/tmp/lizhipeng.txt 192.168.5.128::test/lizhipeng0129.txt
rsync:failed to connect to 192.168.5.128 (192.168.5.128): No route to host (113) not pass, check the reason
Rsync error:error in Socket IO (code ten) at CLIENTSERVER.C (122) [sender=3.0.9]
[[email protected] ~]# Ping 192.168.5.128
PING 192.168.5.128 (192.168.5.128) bytes of data. Can ping pass, and then check the Telent
Bytes from 192.168.5.128:icmp_seq=1 ttl=64 time=0.351 ms
Bytes from 192.168.5.128:icmp_seq=2 ttl=64 time=0.218 ms
Bytes from 192.168.5.128:icmp_seq=3 ttl=64 time=1.08 ms
^c
---192.168.5.128 ping statistics---
3 Packets transmitted, 3 received, 0% packet loss, time 2001ms
RTT Min/avg/max/mdev = 0.218/0.552/1.089/0.384 ms

[[Email protected] ~]# telnet 192.168.5.128 873 Check the port is not through, check the iptables
Trying 192.168.5.128 ...
Telnet:connect to address 192.168.5.128:no route to host

[[email protected] ~]# systemctl stop firewalld off firewalld, machine 1 same

[[Email protected] ~]# telnet 192.168.5.128 873 pass.
Trying 192.168.5.128 ...
Connected to 192.168.5.128.
Escape character is ' ^] '.
@RSYNCD: 30.0

[Email protected] ~]# Rsync-avp/tmp/lizhipeng.txt 192.168.5.128::test/lizhipeng0129.txt
Password:

Password Close

[[Email protected]02 ~]# rsync-avp/tmp/lizhipeng.txt 192.168.5.128::test/lizhipeng0129.txt Sync succeeded
Sending incremental file list
Lizhipeng.txt
1244 100% 0.00kb/s 0:00:00 (xfer#1, TO-CHECK=0/1)

Sent 1321 bytes Received bytes 898.67 bytes/sec
Total size was 1244 speedup is 0.92

[[email protected] ~]# LS/TMP/RSYNC/1 machine has this file
Lizhipeng0129.txt

[[email protected] ~]# RSYNC-AVP 192.168.5.128::test/lizhipeng0129.txt/tmp/123.txt machine 1 sync to machine 2
Receiving incremental file list
Lizhipeng0129.txt
1244 100% 1.19mb/s 0:00:00 (xfer#1, TO-CHECK=0/1)

Sent bytes received 1356 bytes 2802.00 bytes/sec
Total size was 1244 speedup is 0.89

[Email protected] ~]# cd/tmp/rsync/
[[email protected] rsync]# ls
Lizhipeng0129.txt
[[email protected] rsync]# ln-s/etc/passwd./12.txt Machine 1 Creating a soft link 12.txt pointing to/etc/passwd
[Email protected] rsync]# ls-l
Total Dosage 4
lrwxrwxrwx 1 root root 11 January 07:32 12.txt-/etc/passwd
-rw-r--r--1 root Root 1244 January 01:06 lizhipeng0129.txt

Machine 2 Synchronization Directory

[Email protected] ~]# RSYNC-AVP 192.168.5.128::test//tmp/test/
Receiving incremental file list
Created Directory/tmp/test
./
12.txt-/etc/passwd
Lizhipeng0129.txt
1244 100% 1.19mb/s 0:00:00 (xfer#1, TO-CHECK=0/3)

Sent Wuyi bytes received 1407 bytes 2916.00 bytes/sec
Total size was 1255 speedup is 0.86

No synchronization succeeded

Change to False

[[email protected] ~]# RSYNC-AVP 192.168.5.128::test//tmp/test/synchronization succeeded
Receiving incremental file list
12.txt-/etc/passwd

Sent bytes received 117 bytes 292.00 Bytes/sec
Total size was 1255 speedup is 8.60
[Email protected] ~]# ls-l/tmp/test/
Total Dosage 4
lrwxrwxrwx. 1 root root 11 January 07:32 12.txt-/etc/passwd
-rw-r--r--. 1 root root 1244 January 01:06 lizhipeng0129.txt
[Email protected] ~]#

[[email protected] ~]# RSYNC-AVLP 192.168.5.128::test//tmp/test/Machine 2 synchronization error because the port number is not correct
rsync:failed to connect to 192.168.5.128 (192.168.5.128): Connection refused (111)
Rsync error:error in Socket IO (code ten) at CLIENTSERVER.C (122) [receiver=3.0.9]

[[email protected] ~]# RSYNC-AVLP--port 8730 192.168.5.128::test//tmp/test/--port 8730 Specify port number
Receiving incremental file list
./
12.txt
1244 100% 1.19mb/s 0:00:00 (xfer#1, TO-CHECK=2/4)
Lizhipeng0130.txt
1244 100% 1.19mb/s 0:00:00 (xfer#2, TO-CHECK=0/4)

Sent bytes received 2701 bytes 5536.00 bytes/sec
Total size was 3732 speedup is 1.35

[Email protected] ~]# vim/etc/rsyncd.conf

Insufficient authority

[[email protected] ~]# vim/etc/rsyncd.conf Uid,gid changed to root
[Email protected] ~]# cd/tmp/rsync/
[[email protected] rsync]# ls
12.txt Lizhipeng0129.txt Lizhipeng0130.txt

[Email protected] rsync]# chmod 600!$
chmod 600/etc/rsyncd.passwd

[Email protected] ~]# rsync-avp/tmp/test/--port=8730 [email protected]::test/
Password:
Sending incremental file list
./

Sent bytes received bytes 19.23 Bytes/sec
Total size was 3732 speedup is 29.86
[Email protected] ~]# Touch/tmp/test/1.txt
[Email protected] ~]# rsync-avp/tmp/test/--port=8730 [email protected]::test/
Password:
Sending incremental file list
./
1.txt
0 100% 0.00kb/s 0:00:00 (xfer#1, TO-CHECK=3/5)

Sent 149 bytes Received bytes 32.55 bytes/sec
Total size was 3732 speedup is 20.85

Client Fill in Password

[Email protected] ~]# Vim/etc/rsync_pass.txt
[Email protected] ~]# chmod 600!$
chmod 600/etc/rsync_pass.txt

[Email protected] ~]# Touch/tmp/test/2.txt
[Email protected] ~]# rsync-avp/tmp/test/--port=8730--password-file=/etc/rsync_pass.txt [email protected]::test/ No need to enter a password
Sending incremental file list
./
2.txt
0 100% 0.00kb/s 0:00:00 (xfer#1, TO-CHECK=2/6)

Sent 163 bytes Received bytes 386.00 bytes/sec
Total size was 3732 speedup is 19.34

[Email protected] ~]# ls/var/log/message*
/var/log/messages/var/log/messages-20180108/var/log/messages-20180114/var/log/messages-20180121/var/log/ messages-20180128

[[email protected] ~]# dmesg-c empty the log in memory

[[email protected] ~]# last recorded the correct login time

[[email protected] ~]# LASTB Login failed

Btmp begins Wed Jan 31 05:37:48 2018

[Email protected] ~]# ls/var/log/btmp
/var/log/btmp
[Email protected] ~]# ls/var/log/secure
/var/log/secure

[[Email protected] ~]# screen CTRL + a simultaneously press and press D
[Detached from 3389.pts-0.lizhipenglinux01]

[Email protected] ~]# Screen-ls
There is a screens on:
3389.PTS-0.LIZHIPENGLINUX01 (Detached)
1 Socket in/var/run/screen/s-root.

[Email protected] ~]# screen-r 3389. Get back

[Email protected] ~]# screen
[Detached from 3430.pts-0.lizhipenglinux01]
[Email protected] ~]# screen
[Detached from 3449.pts-0.lizhipenglinux01]
[Email protected] ~]# screen
[Detached from 3468.pts-0.lizhipenglinux01]
[Email protected] ~]# SCREEN-LSN
There is screens on:
3468.PTS-0.LIZHIPENGLINUX01 (Detached)
3449.PTS-0.LIZHIPENGLINUX01 (Detached)
3430.PTS-0.LIZHIPENGLINUX01 (Detached)
3 Sockets in/var/run/screen/s-root.

[Email protected] ~]# screen-r 3468.
[Detached from 3468.pts-0.lizhipenglinux01]
[Email protected] ~]# SCREEN-LSN
There is screens on:
3468.PTS-0.LIZHIPENGLINUX01 (Detached)
3449.PTS-0.LIZHIPENGLINUX01 (Detached)
3430.PTS-0.LIZHIPENGLINUX01 (Detached)
3 Sockets in/var/run/screen/s-root.

[Email protected] ~]# screen-s "Test_screen"
[Detached from 3499.test_screen]
[Email protected] ~]# Screen-ls
There is screens on:
3499.test_screen (Detached)
3468.PTS-0.LIZHIPENGLINUX01 (Detached)
3449.PTS-0.LIZHIPENGLINUX01 (Detached)
3430.PTS-0.LIZHIPENGLINUX01 (Detached)
4 Sockets In/var/run/screen/s-root.

10.32/10.33 rsync synchronizes 10.34 Linux system logs through Services 10.35 screen tool