Tuesday, May 28, 2019

linux - Unable to communicate with pacemaker host while authorising

I'm trying to configure pacemaker cluster with two hosts, I'm using two centos 7(CentOS Linux release 7.2.1511 (Core)) virtual machines.



What I did so far:
I installed packages:



yum install pacemaker corosync haproxy pcs fence-agents-all


Set password for user hacluster on both servers.
Edit /etc/hosts on both machines





10.0.0.14 vm_haproxy1
10.0.0.15 vm_haproxy2


After that enabled services on both servers




systemctl enable pcsd.service pacemaker.service corosync.service haproxy.service



And started pcsd (on both servers)




systemctl start pcsd.service


Service is running on both, I can telnet from one to another on port 2224





telnet vm_haproxy1 2224
Trying 10.0.0.14...
Connected to vm_haproxy1.
Escape character is '^]'.


Output from the netstat:





[root@vm_haproxy2 ~]# netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 849/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 946/master
tcp6 0 0 :::2224 :::* LISTEN 1949/ruby
tcp6 0 0 :::22 :::* LISTEN 849/sshd
tcp6 0 0 ::1:25 :::* LISTEN 946/master
udp 0 0 127.0.0.1:323 0.0.0.0:* 619/chronyd
udp6 0 0 ::1:323 :::* 619/chronyd



Pcsd is binding to ipv6 but like I already said telnet works
Selinux and firewalld are disabled.



Then I tried to authorise hosts with




pcs cluster auth vm_haproxy1 vm_haproxy2



but I got an error:



 
pcs cluster auth vm_haproxy1 vm_haproxy2
Username: hacluster
Password:
Error: Unable to communicate with vm_haproxy1
Error: Unable to communicate with vm_haproxy2



I didn't find any help on google. Maybe there is some one who had already solved that problem with pcs authorisation.

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