Corosync and pacemaker node names do not match (IPs used in the configuration?)

We have PC cluster configuration in centos7. We are below the warning warnings:
Corosync and pacemaker node names do not match (IP used in the configuration?)
I have already tried solutions from the following link and I am still receiving this error.
Any help would be appreciated.

How to remove pacemakers, corosync and PC completely in CentOS 7?

firewall: left port 80 exposed, several IPs accessed phpmyadmin

A few days ago, while playing with a web server, I put my server in a DMZ through my router and forgot to disable it. I opened ports 80 and 3306 on the server firewall (Windows Server) to access it on my LAN. Today I logged into the server and noticed that several databases were deleted from phpmyadmin and the records show many IPs connected to phpmyadmin.

The server itself did not contain critical or personal information. Whoever entered my server created a database with a table that tells me to send .05 BTC to an account if I want to recover my data, but the databases that deleted / exported, honestly, are not so important to me.

What worries me is if they could access the rest of my LAN. What should I do to verify? I disabled the DMZ configuration and verified, port 80 is no longer open from outside my network.

I found more than 500 IPs that could be part of the click bombing network

I noticed that many strange bots hit my sites, even 100-200 at the same time on the site, I'm 90%, these are bots that do click bombing, it coincides with the moment when my AdSense account is going crazy (under CPC , reversal gains, etc.).
And because of their behaviors and parameters, I am 100% sure that all ~ 500 IPS are part of the same group.

I was able to identify them by certain parameters, but if I publish the list publicly, I'm afraid they will realize and could make some changes so that they cannot be identified in the future.

<>

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Can OVH IPs be moved to a different data center?

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Can OVH IPs be moved to a different data center? The | Web Hosting Talk

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  1. Can OVH IPs be moved to a different data center?

    I know that I have moved IP from one machine to another before. Maybe they were in the same data center, or at least in the same country. I am trying to move from a French server to a Canadian server. When I select to move it, the only options it offers are themselves, or "Parking." I seem to remember that when I moved the Soyoustart IPs to OVH, I first had to delete all virtual mac addresses. It's possible?


  2. Impossible. The only locations that can be made are among their locations in France, such as Gravelines. <-> Strasbourg. Even their locations in the United States are not compatible with this.

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Apache: allows connections from unknown IPs only on a specific route

Using Apache2.4, I want some route to be available for all IPs, and that all others are available only for allowed IPs, using a proxy pass:


    ProxyPass http://127.0.0.1:8080/path/
    ProxyPassReverse http://127.0.0.1:8080/path/
    Order allow,deny
    Satisfy any



    Order deny,allow
    deny from all
    Allow from XX.XX.XX.XX/24
    Allow from YY.YY.YY.YY/24
    Allow from WW.WW.WW.WW/24

    ProxyPreserveHost On
    ProxyPass http://127.0.0.1:8080/#/
    ProxyPassReverse http://127.0.0.1:8080/#/


This configuration does not work, since everyone gets a 403. How should I configure this Vhost?

ovh failover ips | Web Hosting Talk

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  1. ovh failover ips

    I have more than 200 ovh failover ips. Anyone interested in buying? I can give each one for $ 2.


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seo – Multiple IPs for the same domain worldwide, should I use the same SSL certificate?

I placed my domain on different IPs on 3 continents, do I need to copy the same SSL certificate requested on all different servers or is it okay to use the different certificates generated by each individual server?

Can it cause problems?
I saw that Google started sending much less traffic and I am trying to debug.

The DNS is set using Amazon Route 53 and returns the IP of the server closest to the visitor (actually, latency).

Postfix, Dovecot problems, root logins of unknown ip`s

I have a problem with Postfix, Dovecot or both configurations.
Everything works as it should, but in the records I noticed that several different IPs are sending emails using the root account, they are trying to send from root@domain.com to root@domain.com.
I'm in Debian 9, I deleted my root login with:

sudo passwd -d root

And disabled the account:

sudo passwd -l root

There is one more account on the server and I noticed that it was also accessed! When I checked auth.log there were no brute force attempts. I am running ssh on a different port, using keys, more iptables is configured on that port with hitcount.

My version of Postfix is: 3.1.12, Dovecot: 2.2.27
Sample record of mail.log

Jan 20 18:37:50 vps22525 postfix/submission/smtpd(5026): connect from unknown(122.228.19.79)
Jan 20 18:37:50 vps22525 postfix/submission/smtpd(5029): connect from unknown(122.228.19.79)
Jan 20 18:37:50 vps22525 postfix/submission/smtpd(5026): lost connection after CONNECT from unknown(122.228.19.79)
Jan 20 18:37:50 vps22525 postfix/submission/smtpd(5026): disconnect from unknown(122.228.19.79) commands=0/0
Jan 20 18:37:51 vps22525 postfix/submission/smtpd(5029): lost connection after UNKNOWN from unknown(122.228.19.79)
Jan 20 18:37:51 vps22525 postfix/submission/smtpd(5029): disconnect from unknown(122.228.19.79) ehlo=1 unknown=0/1 commands=1/2
Jan 20 18:41:11 vps22525 postfix/anvil(5028): statistics: max connection rate 2/60s for (submission:122.228.19.79) at Jan 20 18:37:50
Jan 20 18:41:11 vps22525 postfix/anvil(5028): statistics: max connection count 2 for (submission:122.228.19.79) at Jan 20 18:37:50
Jan 20 18:41:11 vps22525 postfix/anvil(5028): statistics: max cache size 1 at Jan 20 18:37:50
Jan 20 19:54:48 vps22525 postfix/smtpd(5172): warning: hostname ip-38-56.ZervDNS does not resolve to address 92.118.38.56: Name or service not known
Jan 20 19:54:48 vps22525 postfix/smtpd(5172): connect from unknown(92.118.38.56)
Jan 20 19:54:52 vps22525 postfix/smtpd(5172): disconnect from unknown(92.118.38.56) ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Jan 20 19:58:12 vps22525 postfix/anvil(5174): statistics: max connection rate 1/60s for (smtp:92.118.38.56) at Jan 20 19:54:48
Jan 20 19:58:12 vps22525 postfix/anvil(5174): statistics: max connection count 1 for (smtp:92.118.38.56) at Jan 20 19:54:48
Jan 20 19:58:12 vps22525 postfix/anvil(5174): statistics: max cache size 1 at Jan 20 19:54:48
Jan 20 21:24:32 vps22525 postfix/submission/smtpd(5303): warning: hostname ip-178-112-68-164.static.contabo.net does not resolve to address 164.68.112.178: Name or service not known
Jan 20 21:24:32 vps22525 postfix/submission/smtpd(5303): connect from unknown(164.68.112.178)
Jan 20 21:24:33 vps22525 postfix/submission/smtpd(5303): SSL_accept error from unknown(164.68.112.178): lost connection
Jan 20 21:24:33 vps22525 postfix/submission/smtpd(5303): lost connection after STARTTLS from unknown(164.68.112.178)
Jan 20 21:24:33 vps22525 postfix/submission/smtpd(5303): disconnect from unknown(164.68.112.178) ehlo=1 starttls=0/1 commands=1/2
Jan 20 21:25:08 vps22525 dovecot: imap-login: Aborted login (no auth attempts in 1 secs): user=<>, rip=122.228.19.79, lip=127.127.127.127, TLS, session=
Jan 20 21:27:53 vps22525 postfix/anvil(5305): statistics: max connection rate 1/60s for (submission:164.68.112.178) at Jan 20 21:24:32
Jan 20 21:27:53 vps22525 postfix/anvil(5305): statistics: max connection count 1 for (submission:164.68.112.178) at Jan 20 21:24:32
Jan 20 21:27:53 vps22525 postfix/anvil(5305): statistics: max cache size 1 at Jan 20 21:24:32
Jan 21 00:00:03 vps22525 postfix/pickup(5421): 2771B209A0: uid=0 from=
Jan 21 00:00:03 vps22525 postfix/cleanup(5533): 2771B209A0: message-id=<20200120220003.2771B209A0@mail.mydomain.com>
Jan 21 00:00:03 vps22525 postfix/qmgr(1453): 2771B209A0: from=, size=1906, nrcpt=1 (queue active)
Jan 21 00:00:03 vps22525 postfix/local(5535): 2771B209A0: to=, orig_to=, relay=local, delay=0.04, delays=0.02/0.01/0/0.01, dsn=5.2.0, status=bounced (maildir delivery failed: create maildir file /root/Mail$
Jan 21 00:00:03 vps22525 postfix/cleanup(5533): 2DED5209A5: message-id=<20200120220003.2DED5209A5@mail.mydomain.com>
Jan 21 00:00:03 vps22525 postfix/qmgr(1453): 2DED5209A5: from=<>, size=4037, nrcpt=1 (queue active)
Jan 21 00:00:03 vps22525 postfix/bounce(5536): 2771B209A0: sender non-delivery notification: 2DED5209A5
Jan 21 00:00:03 vps22525 postfix/qmgr(1453): 2771B209A0: removed
Jan 21 00:00:03 vps22525 postfix/local(5535): 2DED5209A5: to=, relay=local, delay=0, delays=0/0/0/0, dsn=5.2.0, status=bounced (maildir delivery failed: create maildir file /root/Maildir/tmp/1579557603.P5535.vps$
Jan 21 00:00:03 vps22525 postfix/qmgr(1453): 2DED5209A5: removed
Jan 21 00:33:07 vps22525 postfix/submission/smtpd(5582): warning: hostname zg-0911b-52.stretchoid.com does not resolve to address 159.203.193.36: Name or service not known
Jan 21 00:33:07 vps22525 postfix/submission/smtpd(5582): connect from unknown(159.203.193.36)
Jan 21 00:33:07 vps22525 postfix/submission/smtpd(5582): disconnect from unknown(159.203.193.36) ehlo=1 quit=1 commands=2
Jan 21 00:36:27 vps22525 postfix/anvil(5584): statistics: max connection rate 1/60s for (submission:159.203.193.36) at Jan 21 00:33:07
Jan 21 00:36:27 vps22525 postfix/anvil(5584): statistics: max connection count 1 for (submission:159.203.193.36) at Jan 21 00:33:07
Jan 21 00:36:27 vps22525 postfix/anvil(5584): statistics: max cache size 1 at Jan 21 00:33:07
Jan 21 03:09:01 vps22525 postfix/pickup(5713): 557E6201DE: uid=0 from=
Jan 21 03:09:01 vps22525 postfix/cleanup(5847): 557E6201DE: message-id=<20200121010901.557E6201DE@mail.mydomain.com>
Jan 21 03:09:01 vps22525 postfix/qmgr(1453): 557E6201DE: from=, size=1048, nrcpt=1 (queue active)
Jan 21 03:09:01 vps22525 postfix/local(5849): 557E6201DE: to=, orig_to=, relay=local, delay=0.05, delays=0.02/0.01/0/0.02, dsn=5.2.0, status=bounced (maildir delivery failed: create maildir file /root/Mail$
Jan 21 03:09:01 vps22525 postfix/cleanup(5847): 5F945209B4: message-id=<20200121010901.5F945209B4@mail.mydomain.com>
Jan 21 03:09:01 vps22525 postfix/qmgr(1453): 5F945209B4: from=<>, size=3179, nrcpt=1 (queue active)
Jan 21 03:09:01 vps22525 postfix/bounce(5850): 557E6201DE: sender non-delivery notification: 5F945209B4
Jan 21 03:09:01 vps22525 postfix/qmgr(1453): 557E6201DE: removed
Jan 21 03:09:01 vps22525 postfix/local(5849): 5F945209B4: to=, relay=local, delay=0, delays=0/0/0/0, dsn=5.2.0, status=bounced (maildir delivery failed: create maildir file /root/Maildir/tmp/1579568941.P5849.vps$
Jan 21 03:09:01 vps22525 postfix/qmgr(1453): 5F945209B4: removed

Postfix main.cf

# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2

# TLS parameters
smtpd_tls_cert_file = /etc/letsencrypt/live/mail.mydomain.com/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/mail.mydomain.com/privkey.pem
smtpd_use_tls=yes
smtpd_tls_auth_only=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.mydomain.com
mydomain = mydomain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $mydomain
masquerade_domains = $mydomain
mydestination = localhost.$mydomain, localhost, $mydomain
relayhost =
mynetworks = 127.0.0.0/8 (::ffff:127.0.0.0)/104 (::1)/128
#mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
home_mailbox = Maildir/
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = check_recipient_access  hash:/etc/postfix/recipient_access reject_unknown_recipient_domain permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination,reject_invalid_hostname,reject_non_fqdn_hostname,reject_non_fqdn_sender,reject_non_fqdn_recipient,reject_unknown_sender_domain,reject_rbl_client sbl.spamhaus.org,reject_rbl_client cbl.abuseat.org
smtp_tls_security_level = may
smtpd_tls_security_level = may
smtp_tls_note_starttls_offer = yes
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
virtual_alias_maps = hash:/etc/postfix/virtual
smtpd_helo_required = yes
smtpd_helo_restrictions = reject_non_fqdn_helo_hostname,reject_invalid_helo_hostname,reject_unknown_helo_hostname
disable_vrfy_command = yes
smtpd_delay_reject = yes
smtpd_error_sleep_time = 1s
smtpd_soft_error_limit = 5
smtpd_hard_error_limit = 10
smtpd_restriction_classes = mua_sender_restrictions,
    mua_client_restrictions,
    mua_helo_restrictions
mua_sender_restrictions = permit_sasl_authenticated, reject
mua_client_restrictions = permit_sasl_authenticated, reject
mua_helo_restrictions = permit_mynetworks,
    reject_non_fqdn_hostname,
    reject_invalid_hostname,
    permit

How do I prevent this from happening? What did I miss in my configuration?

networks: how can I programmatically obtain the WAN IPs of a multi-WAN TP-Link router?

Our office uses a TP-Link TL-ER6020 multi-WAN router, which supports up to 4 WAN connections, of which I am using 2. To access from outside, I would like to register both IPs with AWS Route 53 DNS. Using another system from within the office (such as a Pi) does not work reliably, since methods such as dig +short myip.opendns.com @resolver1.opendns.com inform any of the IPs according to the route the traffic took.

When inspecting the administrator user interface, there seems to be no indication of an API. The open ports seem to be:

53
80
443
20002

I have enabled SNMP, and using snmpwalk, I obtained some variables of interest, excluding the IP of the intranet:

$ snmpwalk -c public -v 2c 192.168.1.1 iso.3.6.1.2.1.4.22.1.3 | grep -vF 192.168.1.
iso.3.6.1.2.1.4.22.1.3.15.aaa.aaa.aaa.1 = IpAddress: aaa.aaa.aaa.1
iso.3.6.1.2.1.4.22.1.3.15.aaa.aaa.aaa.38 = IpAddress: aaa.aaa.aaa.38
iso.3.6.1.2.1.4.22.1.3.16.bbb.bbb.bbb.1 = IpAddress: bbb.bbb.bbb.1
iso.3.6.1.2.1.4.22.1.3.16.bbb.bbb.bbb.181 = IpAddress: bbb.bbb.bbb.181

Can I trust this output to obtain external IPs? aaa.aaa.aaa.38 Y aaa.aaa.aaa.181 consequently? Or do I need to match iso.3.6.1.2.1.4.22.1.2 (MAC Address) and iso.3.6.1.2.1.4.22.1.3 (IP) to be sure (what could I do with awk or Python)? Something like:

snmpwalk -c public -v 2c 192.168.1.1 iso.3.6.1.2.1.4.22.1 | awk -v OFS=. '/Hex-STRING/ && /XX XX XX XX XX X(YY)/ {split ($1, a, "."); print a(12), a(13), a(14), a(15)}'

Is there any other option with this router?

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