On Tue, Mar 31, 2020 at 1:09 AM Rafael David Tinoco <rafaeldtin...@ubuntu.com> wrote: > > Hello, > > As many as you know I'm currently revamping Ubuntu High Availability > Packages > > For 20.04, considered HA (or HA related) packages are: > > - Core packages: > > - libqb > - kronosnet > - corosync > - pacemaker > - resource-agents > - fence-agents > - crmsh > - cluster-glue > - drbd-utils > - dlm > - gfs2-utils > > - "Deprecated" packages: > > - heartbeat > - keepalived > - ocfs2-tools > > - Not in "main" packages: > > - pcs (will likely replace crmsh in near future) > - csync2 > - corosync-qdevice > - fence-virt > - sbd > - booth > > - Related packages: > > - multipath-tools > - open-iscsi > - sg3-utils > - targetcli-fb > - tgt (we're trying to deprecate in favor of LIO) > - lvm2 > > For now, until Beta Freeze, we've been trying to catch up with upstream > latest > releases and, from now on, I'm going through existing opened bugs and > addressing > them with latest fixes (from upstream) + any needed fix to address the bugs > (done to kronosnet, with FFE opened, and corosync, about to merge fixes to > it). > > Next step is to document in Server Guide all supported scenarios for HA > related > packages. The intention here is to describe exact set of scenarios that we > know > are good for the perfect behavior of clustering software AND which scenarios > we > cannot support. > > OBS: This includes the need, or not, to have odd number of nodes/votes, to > have > or not proper fencing mechanisms (and which fencing mechanisms to support) > AND, > finally, what *resource agents* to support. > > I'll probably ask other feedback soon, but, for this moment, I'm asking > comments > for the list of resource agents bellow. I tried to split and explain what > the > resources are used for and if they are supported in Ubuntu or not (or if the > related managed service is in [main] or in [universe]). > > So please, take some time to provide feedback about this list, whether we > should > move resources from one category to the other. *NOTE* that I'm not giving > the > "fence agents" list yet. That will be another list. > > I'm particularly interested in feedback from @jamespage and @ddstreet as > they > probably have good intel about resources usage BUT anyone is welcome to > provide > comments! > > Thank you very much in advance!
I added a few comments below, otherwise all the categories look reasonable to me, thanks! > > #### RFC: Ubuntu HA resource-agents supportability > > # > ## FULLY SUPPORTED (managed service is likely in main or is important > enough) > # > > # trivial agents > > Delay - test resource for introducing delay > MailTo - sends email to a sysadmin whenever a takeover > occurs > ClusterMon - runs crm_mon to a html page from time to time > HealthCPU - measures CPU idling and updates #health-cpu attr > HealthIOWait - measures CPU idling and updates #health-iowait > attr > HealthSMART - measures CPU idling and updates #health-smart attr > > # services > > apache - apache web server instance > dovecot - dovecot IMAP/POP3 server instance > dhcpd - chrooted ISC dhcp server instance > mysql - MySQL database instance > mysql-proxy - MySQL proxy instance > named - bind/named server instance > nfsnotify - nfs sm-notify reboot notifications daemon > nfsserver - nfs server resource > nginx - Nginx web/proxy server instance > postfix - postfix mail server instance > rabbitmq-cluster - cloned rabbitmq cluster instance > remote - pacemaker remote resource agent > rsyncd - rsyncd instance > rsyslog - rsyslogd instance > slapd - stand-alone LDAP daemon instance > Squid - squid proxy server instance > vsftpd - vsftpd server instance > > # storage > > Raid1 - software RAID (MD) devices on shared storage > iscsi - local iscsi initiator and its conns to targets > iSCSILogicalUnit - iSCSI logical units > iSCSITarget - iSCSI target export agent (implementation: tgt, > lio) > LVM - LVM volume as an HA resource > LVM-activate - LVM activation/deact work for a given VG > (lvmlockd+LVM-activate OR clvm+LVM-activate) > Filesystem - filesystem on a shared storage medium > symlink - symbolic link > ZFS - ZFS pools import/export > > # locking & reservations > > controld - distributed lock manager for clustered FSs > clvm - clvmd daemon (cluster logical vol manager) Was clvm dropped from lvm2? https://launchpad.net/ubuntu/+source/lvm2/2.03.02-2ubuntu1 I haven't used clustered lvm myself; maybe it was just rolled into lvm2. > lvmlockd - agent manages the lvmlockd daemon. > mpathpersist - SCSI persistent reservations on mpath devs > sg_persist - master/slave resource for SCSI3 reservations > > # networking > > Route - network routes > iface-bridge - bridge network interfaces > iface-vlan - vlan network interfaces > IPaddr2 - virtual IPv4 and IPv6 addresses > ipsec - ipsec tunnels for VIPs > IPsrcaddr - preferred source address modification > IPv6addr - IPv6 aliases > conntrackd - conntrackd instance > SendArp - send gratuitous ARP for IP address > VIPArip - virtual IP address through RIP2 > ifspeed - monitor action runs -> updates CIB with if speed > > # virtualization > > VirtualDomain - manages virtual domains through libvirt > (virtual machine only) > > # containers > > docker - docker container resource agent as cpaelzer said, docker itself shouldn't be in the fully supported list. > lxc - allows LXC containers to be managed by the cluster presumably, this includes lxc and lxd? > > # > ## BEST EFFORT SUPPORT (managed service is likely in universe or is > interesting) > # > > # trivial agents > > anything - generic agent to manage virtually *anything* > Dummy - testing dummy resource agent (template for RA > writers) > AudibleAlarm - audible beeps at interval > Stateful - example agent that supports two states > WinPopup - sends a SMB notification msg (popup) to a host > > # services > > asterisk - asterisk PBX > CTDB - clustered samba (for needed clustered underlying) > dnsupdate - ip take-over via dynamic dns updates > exportfs - nfs exports (not the nfs server) wouldn't this be fully supported? > fio - fio instance > galera - galera instance > garbd - galera arbitrator instance > jboss - JBoss application server instance > jira - JIRA server instance > kamailio - kamailio SIP proxy/registrar instance > mariadb - MariaDB master/slave instance > nagios - nagios instance > ovsmonitor - clone resource to monitor network bonds on diff > nodes > pgagent - pgagent instance > pgsql - pgsql database instance shouldn't this be in fully supported? also Brett (I added to cc) brought up that resource-agents-paf might be worth considering supporting: https://launchpad.net/ubuntu/+source/resource-agents-paf > pound - pound reverse proxy load-bal server instance > proftpd - proftpd instance > Pure-FTPd - pure-ftpd instance > redis - redis server (supports master/slave replicas) > instance > syslog-ng - syslog-ng instance > tomcat - tomcat servlet environment instance > varnish - varnish instance > > # storage > > AoEtarget - ata over ethernet > > # networking > > IPaddr - virtual IPv4 addresses > ocf:pacemaker:ping - records in CIB number of nodes host can connect to > portblock - temporarily block/unblock access to tcp/udp ports > > # openstack > > openstack-cinder-volume - attach cinder vol to an instance (os-info <->) > openstack-floating-ip - move a floating IP from an instance to another I would expect both these to be in the fully supported category? > > # registration (CIB) > > lxd-info - nr of lxd containers running in CIB > machine-info - records various node attributes in CIB > NodeUtilization - cpu, host mem, hypervisor mem etc... into CIB > openstack-info - records attributes of a node into CIB > SysInfo - records various node attributes into CIB > SystemHealth - monitors health of system using IPMI > attribute - sets node attr one way when started and vice-versa > > # > ## COMMUNITY SUPPORT (bugs opened here will be forwarded to upstream > directly) > # > > # services > > SphinxSearchDaemon - sphix search daemon > Xinetd - start/stop services managed by xinetd > zabbixserver - zabbix server instance > > # storage > > o2cb - oracle cluster filesystem userspace daemon > (oracle) > sfex - excl access to shared storage using SF-EX > > # virtualization > > aliyun-vpc-move-ip - move ip within a vpc of the aliyum ecs (alibaba) > awseip - manages aws elastic IP address (aws) > awsvip - manages aws secondary private ip addresses (aws) > aws-vpc-move-ip - move ip within a vpc of the aws ec2 (aws) > aws-vpc-route53 - update route53 vpc record for aws ec2 (aws) > azure-events - monitor for scheduled events for azure vm (azure) > azure-lb - answers azure load balancer health probe req > (azure) > gcp-vpc-move-ip - floating ip address within a GCP VPC (google) > ManageVE - openVZ virtual environment (virtuozzo) > minio - minio server instance > podman - creates/launches podman containers > rkt - creates/launches container based on supplied image > > # > ## UNSUPPORTED (Ubuntu does not support it) > # > > db2 - manages IBM DB2 LUW databases (IBM) > eDir88 - Novell eDirectory directory server instance > (novell) > ICP - ICP vortex clustered host drive (intel) > ids - IBM informix dynamic server (IDS) (IBM) > SAPDatabase - SAP database (of any type) instance agent (SAP) > SAPInstance - SAP application server instances agent (SAP) > ServeRAID - enables/disables shared serveRAID merge groups > (IBM) > ManageRAID - raid devices (/etc/conf.d/HB-ManageRAID) > oraasm - oracle asm agent, uses ohasd for asm disk grp > (oracle) > oracle - oracle database instance (oracle) > oralsnr - oracle TNS listener (oracle) > sybaseASE - sybase ASE failover instance (Sybase) > vdo-vol - https://bugs.launchpad.net/ubuntu/+bug/1869825 > WAS - websphere application server instance (IBM) > WAS6 - websphere application server instance (IBM) > Xen - xen unprivileged domains as cpaelzer mentioned, Xen should probably move up to the 'best effort' section; this was just moved out of main in focal. > > # > ## DEPRECATED (do not use) > # > > Evmsd - clustered evms vol mgmt (evms is not maintained) > EvmsSCC - clustered evms vol mgmt (evms is not maintained) > LinuxSCSI - enables/disables scsi devs through kernel scsi > hotplug > scsi2reservation - SCSI-2 reservation agent (depends on > "scsi_reserve") > ocf:heartbeat:pingd - monitors connectivity to specific hosts > ocf:pacemaker:pingd - replaced by pacemaker:ping (this is broken) > vmware - control vmware server 2.0 virtual machines (2009) > > -- ubuntu-devel mailing list ubuntu-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel
