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Questions tagged [corosync]

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19 views

Adding (cifs, samba)Filesystem resource to PCS

I am trying to create PCS resource Filesystem on Samba share(cifs) file system type. Here is a command that I have used to create pcs resource. root@shaunak-VirtualBox:~# pcs resource show ...
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1answer
27 views

Pacemaker, corosync delete

I've got Pacemaker in conjunction with Corosync on two nodes and two float ip. Now I need to delete this construction. What is the best way to stop Pacemaker and Corosync and delete them?
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0answers
36 views

DRBD with Pacemaker/Corosync

I have an active/passive cluster working nicely, with just nagging question. When the systems reboots, on the passive node, drbd replication does not start right. It always comes up like this: ...
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1answer
40 views

Is it possible to maintain a configuration of an arbitrary resource using pacemaker cluster

What I understood is that with resource agents (which are exactly same on all nodes), pacemaker can start/stop resource on any node. But can we also use it to sync a configuraton file in all nodes in ...
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3answers
431 views

Why disable DRBD in Pacemaker cluster

The DRBD documentation (in section Integrating DRBD with Pacemaker clusters) recommends that DRBD should be disabled in a Pacemaker cluster: If you are employing the DRBD OCF resource agent, it is ...
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1answer
959 views

How to create resource for service using Corosync/Pacemaker

Am new to serverfault, hoping to see the experts answers for my query. I have done a Active/passive setup for 1 cell vCloud Director. Below are the setup details. OS : CentOS 7.10 vCloud Director : ...
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0answers
56 views

drbd Failed on on primary, secondary, it is blocked

I'm trying to settup a cluster with apache(to host jenkins service), IPaddr2, drbd. The process run flawlessly until I add drbd resource to pacemaker, crm status told me that drbd FAILED on both ...
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1answer
44 views

No traffic arrives via openstack floating IP and pacemaker/corosync

I am following the steps from https://fuga.cloud/academy/tutorials/ha-vip-with-corosync-on-openstack/. I am missing a reason why traffic going into the external floating IP is not arriving correctly ...
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1answer
125 views

Pacemaker fencing not triggered

I have 2 nodes : - patroni1 : 192.168.1.38 - patroni2 : 192.168.1.39 and Virtual IP : 192.168.1.40 I have HA-Proxy installed on both. Here is my pcs status when VIP is attached to patroni2 and ...
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3answers
104 views

Nagios/Icinga: Don't show CRITICAL for DRBD partitions on standby node

I've set up a pacemaker/corosync ha-cluster in a failover configuration with two nodes: productive and standby. There are three DRBD partitions. Everything works fine so far. I'm using Nagios NRPE on ...
2
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2answers
328 views

CentOS 7: PCS Pacemaker Corosync Active/Active HAProxy dependency

I am trying to setup PCS for HAProxy on CentOS7 in an active/active configuration. I've done active/active before, but I am not familiar with constraints and dependency groups. So far so good: 2 ...
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0answers
385 views

DLM and CLVMD not starting on pacemaker redhat HA

I was trying to configure an active-active cluster w/ gfs2, I followed the following instructions: pcs property set no-quorum-policy=freeze pcs resource create dlm ocf:pacemaker:controld op monitor ...
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2answers
95 views

Using the max_network_delay option of the Corosync

I have the cluster based on pacemaker and corosync. Cluster nodes are located in several data centers. And there is up to 450 ms ping latency between some of the nodes. Sometimes these delays lead to ...
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0answers
103 views

pacemaker not monitoring the service although giving op monitor interval=10s while creating resource

Following is the service scripts which runs custom script. [root@xxxxxxxxxxvmrf0001vbisalah001 ~]# cat /etc/systemd/system/drbdRes_rhcdDaemon.service [Unit] Description=Manage drbdRes cluster ...
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0answers
87 views

pacemaker drbd active-passive cluster upgrade resources

I have a two node cluster (active-passive) and basically what it does it binds the Cluster IP to the active node, start the OTRS daemon, httpd and mounts the DRBD device. On first looks it works all ...
2
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1answer
1k views

Corosync HA preventing split-brain scenario

I'm setting up a test system for self-teaching about load balancing and high availability and I'm curious about a configuration setting in Corosync and would like to know what you guys who have ...
1
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1answer
56 views

Weird node number in load balancer setup

I got an odd problem here. I set up Corosync and Pacemaker, I used this guide as a reference but I improvised a little the first time installing it since I'm doing this to learn, not following ...
1
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1answer
148 views

Corosync cluster will not bind vips to loopback, so apache fails to start in CentOS 7

I have a problem getting apache to work in a corosync cluster. I probably sifted through more than hundred web pages and a couple of dozen Google Searches, and was not able to find any matching ...
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0answers
196 views

Colocate pacemaker Master resources with stateless resources

I've implemented a simple two-node cluster with DRBD and a couple of network-based Master/Slave resources. Using the ethmonitor RA, I set up failover whenever the Master/Primary node loses link on ...
0
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1answer
250 views

Dead node in Pacemaker cluster: “Couldn't complete CIB registration”

I have a situation where a two-node Pacemaker cluster does not work any more after an upgrade. Package versions are pacemaker 1.1.16-1~bpo8+ and corosync 2.4.2-3~bpo8+1 under Debian Jessie. Pacemaker ...
1
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1answer
613 views

DRBD resources not coming back online - Pacemaker + Corosync

I am using DRBD for replication. For testing purpose I am using 2 VMs. I have noticed that if I disconnect network interface on a node then it moves to standalone, and after I reconnect it does not go ...
2
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1answer
501 views

Synching Amazon EC2 Instances

I want to user Corosync and Pacemaker to sync between two servers, the servers are, two (or more) EC2 instances, with Ubuntu 16.04 installed on them. I was doing that following this article, but I'm ...
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1answer
372 views

pacemaker not able to start MySQL on second node

I have a pacemaker/corosync/drbd setup on 2 physically idential Ubuntu Server 16.04 LTS and I am trying to achieve high availability for MySQL 5.7 and Apache 2.4. Both servers where set up the exact ...
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2answers
2k views

corosync systemd resource does not reflect service status

I have configured corosync cluster with few recources. There is custom systemd service 'jira' and systemctl corectly returns its status. QUESTION: How can I configure corosync to respect failed ...
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1answer
287 views

SQL Server 2017 crashed during startup on Ubuntu with Pacemaker failover

I have installed mssql-server and mssql-server-ha on Ubuntu Server 16.04 LTS. I'm using drbd on two nodes, with pacemaker and corosync attempting to control the automatic failover between the two ...
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1answer
990 views

DRBD Status after Network fail become Primary/Unknown

i have the following structure: 2 nodes. corosync + pacemaker + DRBD + OCFS2. ============== After test Network fail the status from DRBD become: ****Primary/Unknown**** dmesg show the following: ...
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1answer
453 views

Pacemaker location constraints on resources apparently not obeyed

I have a Pacemaker setup with two STONITH resources. They have location constraints that crm configure show lists as follows: location loc_stonith_node1 stonith_node1 rule -inf: #id eq node1 location ...
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1answer
2k views

Edit HA cluster config cib.xml

I want to edit pingd of my cluster config living on centos 6.5 because the addresses are no longer valid and my cluster always switching to the other node because of the failed nodes.What is the best ...
2
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1answer
1k views

Quickly find out if pacemaker/corosync has quorum/is quorate

In a shell script, we currently call /usr/sbin/pcs status cluster and then grep -qE for 'Current DC:.*partition with quorum' to find out if the cluster is fine. I would like to know if there is a ...
0
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1answer
334 views

CLVM with shared storage not available to all nodes in the cluster

If you are running a 3 or more node cluster with cman/corosync and you have some sort of shared block storage (SAN) connected only to some nodes in the cluster how can you enable CLVM on that storage ...
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0answers
193 views

pcs status is reporting wrong output in Corosync and pacemaker configuration

I've configured Corosync and Pacemaker in two Centos servers and everything is working fine. The problem is when I issue pcs status It reports: Online: [ Node1.localomain ] OFFLINE: [ Node2....
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1answer
140 views

Is OpenHPI optional (not mandatory) to Pacemaker

I have noticed that apt-get install -t jessie-backports pacemaker on Debian Jessie 8.9 also installs package openhpid, but that systemctl status openhpid.service subsequently reports that the openhpid....
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1answer
3k views

How to remove pacemaker, corosync and pcs thoroughly on CentOS 7?

Using two nodes: node1: 192.168.0.1 node2: 192.168.0.2 Installed HA tools on both servers: yum install pacemaker pcs (It will include install corosync) On both servers: passwd hacluster Set ...
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1answer
1k views

Why can only see one node after reboot the primary node in a cluster with pacemaker and corosync?

I created two nodes on CentOS 7: node1: 192.168.0.1 node2: 192.168.0.2 Installed such tools: # yum install -y pacemaker corosync pcs crmsh Also did load balancer with HAProxy. After I did all the ...
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1answer
83 views

Pacemaker Cluster Issue - Backup Firewall does not take over in case network cable unplugged from Primary Firewall

I have an issue with pacemaker cluster. I have two firewalls that I am using in Active/ Backup HA. The heartbeat IPs are 10.0.0.1 (FW 1) & 10.0.0.2 (FW 2) on a dedicated network. Traffic IPs on ...
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2answers
892 views

Pacemaker - Cluster does not pass to another node after a disconnected interface

I have the next scenario in Corosync + Pacemaker Node1: eth0: 10.143.0.21/24 eth1: 10.10.10.1/30 (Corosync Comunication) eth2: 192.168.5.2/24 Node2: eth0: 10.143.0.22/24 eth1: 10.10.10.2/30 (...
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1answer
435 views

Slow Failover in Squid Cluster

I created a cluster with Corosync/Pacemaker. In the cluster i've configured two resources, a virtual IP and Squid. There are 2 nodes in the cluster working on Debian 8. crm_status displays, both ...
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2answers
4k views

DRBD Failed with pacemaker

I'm new with Pacemaker and DRBD but I have to configure them together. I created 2 drbd resources : Drbdwww and DrbdMysql But when I use drbd_mon I have the following errors : Stack: corosync ...
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1answer
354 views

High availability with corosync and load balancing with DNS

I have a HA cluster with 2 nodes. This cluster will use floating IP address let's say: 10.10.10.100 The question ...
0
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1answer
1k views

Corosync resource keeps moving after failed node is online again

I have a 2-node corosync cluster managing a virtual IP and an asterisk resource. When I shutdown one of the nodes (server2) intentionally (as a disaster recovery test), the first node (server1) takes ...
0
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1answer
1k views

Pacemaker add floating IP causes haproxy-clone resource to stop

I have a standard 2 node HAproxy load balancer setup with pacemaker 1.1 (using pcs) and haproxy 1.5. I have 2 floating IP addresses with a constraint with the haproxy service as a haproxy-clone ...
2
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1answer
658 views

Do Standby nodes participate/vote in Quorum - Pacemaker - Corosync - 3rd Quorum Only node

I'm setting up a simple 3rd VM to join my HA Cluster. This VM shouldn't ever run any services, except participate in the Quorum vote. In Galera Cluster there is a nice daemon for this, garbd, but for ...
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2answers
90 views

Does corosync 1.4 support public IP's ?

I am creating a cloud based cluster so for now am using uni cast to connect to other pacemaker/corosync nodes.I was able to create a cluster using private IP's. To create a cross region cluster , I ...
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1answer
281 views

corosync + pacemaker + percona agent in production

We are planning on implementing HA using pacemaker Corosync and Percona agent on mysql 5.7.1 with GTID. I googled for quiet a while and realized there isn't enough information. I was wondering if any ...
2
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1answer
2k views

Pacemaker failure-timeout don't reset failcount

I'm using Pacemaker 1.1.13 and Corosync 2.3.4 on Centos7. I've a problem with Master/Slave resource. There is meta attrs for my resource: migration-threshold=1 failure-timeout=10s but when the ...
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0answers
179 views

DRBD /dev/drbd0 not showing : mysql stopped

I have two Xen virtual servers with mysql cluster(db1 and db2) with DRBD and corosync. Recently one of the server i upgrade to KVM and i configured drbd *.res file to be sync again and its working. ...
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1answer
628 views

Puppet: DRBD Resource not promoting in Corosync/Pacemaker

I'm trying to recreate a complete cluster setup from blank using puppet. Everything up to this point works, but now the cluster doesn't promote the DRBD resource on either node. This is the working ...
2
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2answers
750 views

Linux HA Cluster: running a resource as non-root user

i'm have successfully setup the HA cluster using pacemaker and corosync on centos7, and i've also been able to add and start resources. one of the resources is an instance of tomcat, and in the ...
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2answers
1k views

crm status : 0 nodes and 0 resources configured

I've configure corosync and then I got these issue 0 nodes and 0 resources configured. [root@sitampan2 verdana]# crm status Stack: unknown Current DC: NONE Last updated: Thu Jun 16 15:15:40 2016 ...
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1answer
964 views

pacemaker virtual ip loadbalancing with clone and clusterip

I am trying to make a loadbalanced gateway for a group of natted machines. I have 3 centos nodes. Initially only one node was supposed to have the internal gateway ip and that works well. Traffic ...