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    Swap consumption after backup

    Hi, this morning I had new alerts on swap. Please see below One node il alerting about swap utilisation. Its swap capacity is 16GB. How could be sure it will not crash when utilisation come to its limit?
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    Swap consumption after backup

    Swapiness is set to 0. Our storage is Ceph. bash command on a node return this : If I am right, swap is mainly used ceph and pveproxy ?
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    Swap consumption after backup

    Hi, We have a 4 nodes hyperconverged cluster and we see a strange behavior: During vm scheduled backup , swap is increasing significatly (about 500 Mo /node every night). Ram is use about 50% on each node during the day. We have to swapoff/swapon each week. Why this behavior? How could we...
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    [SOLVED] cluster ceph very slow when one node is offline

    @Alwin : Thanks to you, our latest tests are ok. During a reboot of a node , webservers are unavailable few seconds (switching to other replicat of data maybe?), but all vm are ok after that. And when node is up, rebuild is automatic and works perfectly. We could work with one node down as...
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    [SOLVED] cluster ceph very slow when one node is offline

    @Alwin : o_O Why did I do that ? Thanks for your explanations! I will change pool configuration and retest it.
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    [SOLVED] cluster ceph very slow when one node is offline

    yes this morning I test noout flag and nodown flag, but I have same behavior with ether flag. I have only one pool with size 2 and mi_size 2 (placement 1024)
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    [SOLVED] cluster ceph very slow when one node is offline

    Hi , I take a maintenance to get the "ceph -s" return. Regards,
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    [SOLVED] cluster ceph very slow when one node is offline

    Every SAS disk is configured on RAID 0 with no cache. For corosync network, physical NICs dedicated to VM are 2*10Gb Fo. Our link between node in under 0.15 ms (where documentation said "This needs a reliable network with latencies under 2 milliseconds (LAN performance) to work properly "
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    [SOLVED] cluster ceph very slow when one node is offline

    the crushmap is # begin crush map tunable choose_local_tries 0 tunable choose_local_fallback_tries 0 tunable choose_total_tries 50 tunable chooseleaf_descend_once 1 tunable chooseleaf_vary_r 1 tunable chooseleaf_stable 1 tunable straw_calc_version 1 tunable allowed_bucket_algs 54 # devices...
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    [SOLVED] cluster ceph very slow when one node is offline

    ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF -1 16.34796 root default -3 4.08699 host cog-pve01 0 hdd 0.81740 osd.0 up 1.00000 1.00000 1 hdd 0.81740 osd.1 up 1.00000 1.00000 2 hdd 0.81740 osd.2 up...
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    [SOLVED] cluster ceph very slow when one node is offline

    Our cluster in a new cluster and there is a few vm on it. Most of them are webservers. When all nodes are up , ceph health is ok. All servers are responding. But when I reboot a node for maintenance or other, all vms not responding. Other three nodes have Higu CPU load ,and it seems to be too...
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    [SOLVED] cluster ceph very slow when one node is offline

    Hi, We have a cluster of 4 servers (all of them are up-to-date 6.0.7 version) We have configured ceph on both, with 3 monitors. All server work well when thez are all online but when one host is down , the other are very very slow. Have you ever seen this? Regards,

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