Thx Klaus, appreciate your feedback. Regards Javier
Francisco Javier Lopez IT System Engineer | Global IT O: +34 619 728 249<tel:+34%20619%20728%20249> | M: +34 619 728 249<tel:+34%20619%20728%20249> | franciscojavier.lo...@solera.com<mailto:franciscojavier.lo...@solera.com> | Solera.com<https://www.solera.com/> Audatex Datos, S.A. | Avda. de Bruselas, 36, Salida 16, A‑1 (Diversia) , Alcobendas , Madrid , 28108 , Spain [cid:image339311.png@D1525B14.71452121] On 5/9/2019 1:14 PM, Klaus Wenninger wrote: On 5/9/19 1:03 PM, Lopez, Francisco Javier [Global IT] wrote: Good day guys ! I'm implementing fencing in my two node cluster with this detail: - fence_vmware_soap - PostgreSql release 10.X - CentOS 7.X As far as I know, to create the resources, I can use two different ways: - Create only one resource for both nodes, following this way: # pcs -f stonith_cfg stonith create fence_nodes \ fence_vmware_soap \ ipaddr=<VM_IP> \ ssl_insecure=1 \ login="<VM_user>" \ passwd="<VM_passwd>" \ action=reboot \ pcmk_host_list="node_01,node_02" \ power_wait=3 op monitor interval=60s - Create two different resources, one for each node, following this way: # pcs -f stonith_cfg stonith create fence_node_01 \ fence_vmware_soap \ ipaddr=<VM_IP> \ ssl_insecure=1 \ login="<VM_user>" \ passwd="<VM_passwd>" \ action=reboot \ pcmk_host_list="node_01" \ power_wait=3 op monitor interval=60s # pcs -f stonith_cfg stonith create fence_node_02 \ fence_vmware_soap \ ipaddr=<VM_IP> \ ssl_insecure=1 \ login="<VM_user>" \ passwd="<VM_passwd>" \ action=reboot \ pcmk_host_list="node_02" \ power_wait=3 op monitor interval=60s With this method I understand I will have to add some constraints, etc. Said this, my questions are: - Which are the differences among them ? (if any). - Is there any recommended option and why ? For your 2-node-cluster there might be a definite reason why you'd like to have 2 fence-resources as to prevent fence-races when both are still alive but just don't see each other. If you make one wait a little longer to fence you can determine which one would rather win. If the aim is just to prevent that they fence each other at the same time introduction of a random delay should be fine as well. (That is pcmk_delay_max and if you want to further tailor the delay with astatic delay component you can use pcmk_delay_base on top.) 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