HA構成の構築

2台のLinux（CentOS7）でHA環境を構築し、仕組みを理解する。

1.構築
---

```sh
### 両方で実施
[root@SYSLOG01 ~]# yum install pacemaker pcs

### 両方で実施
[root@SYSLOG01 ~]# systemctl start pcsd

### 両方で実施
[root@SYSLOG01 ~]# systemctl enable pcsd

### 両方で実施
[root@SYSLOG01 ~]# passwd hacluster
    !QAZ2wsx

### 両方で実施
[root@SYSLOG01 ~]# vim /etc/hosts
    xxx.xxx.xxx.xxx SYSLOG01    
    xxx.xxx.xxx.xxx SYSLOG02

### 両方で実施
### https://access.redhat.com/documentation/ja-jp/red_hat_enterprise_linux/7/html/high_availability_add-on_reference/s1-firewalls-haar
[root@SYSLOG01 ~]# firewall-cmd --permanent --add-service=high-availability
success
[root@SYSLOG01 ~]# firewall-cmd --add-service=high-availability
success

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs cluster auth SYSLOG01 SYSLOG02
Username: hacluster
Password: 
syslog02: Authorized
syslog01: Authorized

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs cluster setup --name SYSLOG-CLUSTER syslog01 syslog02
Destroying cluster on nodes: syslog01, syslog02...
syslog02: Stopping Cluster (pacemaker)...
syslog01: Stopping Cluster (pacemaker)...
syslog02: Successfully destroyed cluster
syslog01: Successfully destroyed cluster

Sending 'pacemaker_remote authkey' to 'syslog01', 'syslog02'
syslog01: successful distribution of the file 'pacemaker_remote authkey'
syslog02: successful distribution of the file 'pacemaker_remote authkey'
Sending cluster config files to the nodes...
syslog01: Succeeded
syslog02: Succeeded

Synchronizing pcsd certificates on nodes syslog01, syslog02...
syslog02: Success
syslog01: Success
Restarting pcsd on the nodes in order to reload the certificates...
syslog02: Success
syslog01: Success

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs cluster start --all
syslog02: Starting Cluster...
syslog01: Starting Cluster...

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs status
Cluster name: SYSLOG-CLUSTER
WARNING: no stonith devices and stonith-enabled is not false
Stack: corosync
Current DC: syslog01 (version 1.1.18-11.el7_5.3-2b07d5c5a9) - partition with quorum
Last updated: Sun Aug  5 00:03:29 2018
Last change: Sun Aug  5 00:02:44 2018 by hacluster via crmd on syslog01

2 nodes configured
0 resources configured

Online: [ syslog01 syslog02 ]

No resources


Daemon Status:
  corosync: active/disabled
  pacemaker: active/disabled
  pcsd: active/enabled

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs property set stonith-enabled=false

### SYSLOG01で実施
[root@SYSLOG01 ~]# pcs status
Cluster name: SYSLOG-CLUSTER
Stack: corosync
Current DC: syslog01 (version 1.1.18-11.el7_5.3-2b07d5c5a9) - partition with quorum
Last updated: Sun Aug  5 00:07:54 2018
Last change: Sun Aug  5 00:07:35 2018 by root via cibadmin on syslog01

2 nodes configured
0 resources configured

Online: [ syslog01 syslog02 ]

No resources


Daemon Status:
  corosync: active/disabled
  pacemaker: active/disabled
  pcsd: active/enabled

### SYSLOG01で実施
### HA構成として監視できるものを全表示
[root@SYSLOG01 ~]# pcs resource list
lsb:netconsole - netconsole
lsb:network - Bring up/down networking
ocf:heartbeat:apache - Manages an Apache Web server instance
ocf:heartbeat:aws-vpc-move-ip - Move IP within a APC of the AWS EC2
ocf:heartbeat:awseip - Amazon AWS Elastic IP Address Resource Agent
ocf:heartbeat:awsvip - Amazon AWS Secondary Private IP Address Resource Agent
ocf:heartbeat:azure-lb - Answers Azure Load Balancer health probe requests
ocf:heartbeat:clvm - clvmd
ocf:heartbeat:conntrackd - This resource agent manages conntrackd
ocf:heartbeat:CTDB - CTDB Resource Agent
ocf:heartbeat:db2 - Resource Agent that manages an IBM DB2 LUW databases in Standard role as primitive or in HADR roles as master/slave configuration. Multiple partitions are supported.
ocf:heartbeat:Delay - Waits for a defined timespan
ocf:heartbeat:dhcpd - Chrooted ISC DHCP server resource agent.
ocf:heartbeat:docker - Docker container resource agent.
ocf:heartbeat:Dummy - Example stateless resource agent
ocf:heartbeat:ethmonitor - Monitors network interfaces
ocf:heartbeat:exportfs - Manages NFS exports
ocf:heartbeat:Filesystem - Manages filesystem mounts
ocf:heartbeat:galera - Manages a galara instance
ocf:heartbeat:garbd - Manages a galera arbitrator instance
ocf:heartbeat:iface-vlan - Manages VLAN network interfaces.
ocf:heartbeat:IPaddr - Manages virtual IPv4 and IPv6 addresses (Linux specific version)
ocf:heartbeat:IPaddr2 - Manages virtual IPv4 and IPv6 addresses (Linux specific version)
ocf:heartbeat:IPsrcaddr - Manages the preferred source address for outgoing IP packets
ocf:heartbeat:iSCSILogicalUnit - Manages iSCSI Logical Units (LUs)
ocf:heartbeat:iSCSITarget - iSCSI target export agent
ocf:heartbeat:LVM - Controls the availability of an LVM Volume Group
ocf:heartbeat:MailTo - Notifies recipients by email in the event of resource takeover
ocf:heartbeat:mysql - Manages a MySQL database instance
ocf:heartbeat:nagios - Nagios resource agent
ocf:heartbeat:named - Manages a named server
ocf:heartbeat:nfsnotify - sm-notify reboot notifications
ocf:heartbeat:nfsserver - Manages an NFS server
ocf:heartbeat:nginx - Manages an Nginx web/proxy server instance
ocf:heartbeat:NodeUtilization - Node Utilization
ocf:heartbeat:oraasm - Oracle ASM resource agent
ocf:heartbeat:oracle - Manages an Oracle Database instance
ocf:heartbeat:oralsnr - Manages an Oracle TNS listener
ocf:heartbeat:pgsql - Manages a PostgreSQL database instance
ocf:heartbeat:portblock - Block and unblocks access to TCP and UDP ports
ocf:heartbeat:postfix - Manages a highly available Postfix mail server instance
ocf:heartbeat:rabbitmq-cluster - rabbitmq clustered
ocf:heartbeat:redis - Redis server
ocf:heartbeat:Route - Manages network routes
ocf:heartbeat:rsyncd - Manages an rsync daemon
ocf:heartbeat:SendArp - Broadcasts unsolicited ARP announcements
ocf:heartbeat:slapd - Manages a Stand-alone LDAP Daemon (slapd) instance
ocf:heartbeat:Squid - Manages a Squid proxy server instance
ocf:heartbeat:sybaseASE - Sybase ASE Failover Instance
ocf:heartbeat:symlink - Manages a symbolic link
ocf:heartbeat:tomcat - Manages a Tomcat servlet environment instance
ocf:heartbeat:VirtualDomain - Manages virtual domains through the libvirt virtualization framework
ocf:heartbeat:Xinetd - Manages a service of Xinetd
ocf:openstack:nova-compute-wait - OpenStack Nova Compute Server
ocf:openstack:NovaEvacuate - Evacuator for OpenStack Nova Compute Server
ocf:pacemaker:attribute - Manages a node attribute
ocf:pacemaker:ClusterMon - Runs crm_mon in the background, recording the cluster status to an HTML file
ocf:pacemaker:controld - DLM Agent for cluster file systems
ocf:pacemaker:Dummy - Example stateless resource agent
ocf:pacemaker:HealthCPU - System health CPU usage
ocf:pacemaker:HealthSMART - SMART health status
ocf:pacemaker:ifspeed - Network interface speed monitor
ocf:pacemaker:ping - node connectivity
ocf:pacemaker:pingd - pingd resource agent
ocf:pacemaker:remote - remote resource agent
ocf:pacemaker:Stateful - Example stateful resource agent
ocf:pacemaker:SysInfo - SysInfo resource agent
ocf:pacemaker:SystemHealth - SystemHealth resource agent
service:arp-ethers - systemd unit file for arp-ethers
service:auditd - systemd unit file for auditd
service:auth-rpcgss-module - systemd unit file for auth-rpcgss-module
service:blk-availability - systemd unit file for blk-availability
service:brandbot - systemd unit file for brandbot
service:chrony-wait - systemd unit file for chrony-wait
service:chronyd - systemd unit file for chronyd
service:console-getty - systemd unit file for console-getty
service:console-shell - systemd unit file for console-shell
service:corosync - systemd unit file for corosync
service:corosync-notifyd - systemd unit file for corosync-notifyd
service:cpupower - systemd unit file for cpupower
service:crm_mon - systemd unit file for crm_mon
service:crond - systemd unit file for crond
service:dbus - systemd unit file for dbus
service:dbus-org.fedoraproject.FirewallD1 - systemd unit file for dbus-org.fedoraproject.FirewallD1
service:dbus-org.freedesktop.hostname1 - systemd unit file for dbus-org.freedesktop.hostname1
service:dbus-org.freedesktop.import1 - systemd unit file for dbus-org.freedesktop.import1
service:dbus-org.freedesktop.locale1 - systemd unit file for dbus-org.freedesktop.locale1
service:dbus-org.freedesktop.login1 - systemd unit file for dbus-org.freedesktop.login1
service:dbus-org.freedesktop.machine1 - systemd unit file for dbus-org.freedesktop.machine1
service:dbus-org.freedesktop.NetworkManager - systemd unit file for dbus-org.freedesktop.NetworkManager
service:dbus-org.freedesktop.nm-dispatcher - systemd unit file for dbus-org.freedesktop.nm-dispatcher
service:dbus.socket - systemd unit file for dbus.socket
service:debug-shell - systemd unit file for debug-shell
service:dm-event - systemd unit file for dm-event
service:dm-event.socket - systemd unit file for dm-event.socket
service:dracut-cmdline - systemd unit file for dracut-cmdline
service:dracut-initqueue - systemd unit file for dracut-initqueue
service:dracut-mount - systemd unit file for dracut-mount
service:dracut-pre-mount - systemd unit file for dracut-pre-mount
service:dracut-pre-pivot - systemd unit file for dracut-pre-pivot
service:dracut-pre-trigger - systemd unit file for dracut-pre-trigger
service:dracut-pre-udev - systemd unit file for dracut-pre-udev
service:dracut-shutdown - systemd unit file for dracut-shutdown
service:ebtables - systemd unit file for ebtables
service:emergency - systemd unit file for emergency
service:firewalld - systemd unit file for firewalld
service:fstrim - systemd unit file for fstrim
service:gssproxy - systemd unit file for gssproxy
service:halt-local - systemd unit file for halt-local
service:initrd-cleanup - systemd unit file for initrd-cleanup
service:initrd-parse-etc - systemd unit file for initrd-parse-etc
service:initrd-switch-root - systemd unit file for initrd-switch-root
service:initrd-udevadm-cleanup-db - systemd unit file for initrd-udevadm-cleanup-db
service:iprdump - systemd unit file for iprdump
service:iprinit - systemd unit file for iprinit
service:iprupdate - systemd unit file for iprupdate
service:irqbalance - systemd unit file for irqbalance
service:kdump - systemd unit file for kdump
service:kmod-static-nodes - systemd unit file for kmod-static-nodes
service:lvm2-lvmetad - systemd unit file for lvm2-lvmetad
service:lvm2-lvmetad.socket - systemd unit file for lvm2-lvmetad.socket
service:lvm2-lvmpolld - systemd unit file for lvm2-lvmpolld
service:lvm2-lvmpolld.socket - systemd unit file for lvm2-lvmpolld.socket
service:lvm2-monitor - systemd unit file for lvm2-monitor
service:messagebus - systemd unit file for messagebus
service:microcode - systemd unit file for microcode
service:netconsole - netconsole
service:network - Bring up/down networking
service:NetworkManager - systemd unit file for NetworkManager
service:NetworkManager-dispatcher - systemd unit file for NetworkManager-dispatcher
service:NetworkManager-wait-online - systemd unit file for NetworkManager-wait-online
service:nfs - systemd unit file for nfs
service:nfs-blkmap - systemd unit file for nfs-blkmap
service:nfs-config - systemd unit file for nfs-config
service:nfs-idmap - systemd unit file for nfs-idmap
service:nfs-idmapd - systemd unit file for nfs-idmapd
service:nfs-lock - systemd unit file for nfs-lock
service:nfs-mountd - systemd unit file for nfs-mountd
service:nfs-rquotad - systemd unit file for nfs-rquotad
service:nfs-secure - systemd unit file for nfs-secure
service:nfs-server - systemd unit file for nfs-server
service:nfs-utils - systemd unit file for nfs-utils
service:nfslock - systemd unit file for nfslock
service:pacemaker - systemd unit file for pacemaker
service:pcsd - systemd unit file for pcsd
service:plymouth-halt - systemd unit file for plymouth-halt
service:plymouth-kexec - systemd unit file for plymouth-kexec
service:plymouth-poweroff - systemd unit file for plymouth-poweroff
service:plymouth-quit - systemd unit file for plymouth-quit
service:plymouth-quit-wait - systemd unit file for plymouth-quit-wait
service:plymouth-read-write - systemd unit file for plymouth-read-write
service:plymouth-reboot - systemd unit file for plymouth-reboot
service:plymouth-start - systemd unit file for plymouth-start
service:plymouth-switch-root - systemd unit file for plymouth-switch-root
service:polkit - systemd unit file for polkit
service:postfix - systemd unit file for postfix
service:quotaon - systemd unit file for quotaon
service:rc-local - systemd unit file for rc-local
service:rdisc - systemd unit file for rdisc
service:rescue - systemd unit file for rescue
service:rhel-autorelabel - systemd unit file for rhel-autorelabel
service:rhel-autorelabel-mark - systemd unit file for rhel-autorelabel-mark
service:rhel-configure - systemd unit file for rhel-configure
service:rhel-dmesg - systemd unit file for rhel-dmesg
service:rhel-domainname - systemd unit file for rhel-domainname
service:rhel-import-state - systemd unit file for rhel-import-state
service:rhel-loadmodules - systemd unit file for rhel-loadmodules
service:rhel-readonly - systemd unit file for rhel-readonly
service:rpc-gssd - systemd unit file for rpc-gssd
service:rpc-rquotad - systemd unit file for rpc-rquotad
service:rpc-statd - systemd unit file for rpc-statd
service:rpc-statd-notify - systemd unit file for rpc-statd-notify
service:rpcbind - systemd unit file for rpcbind
service:rpcbind.socket - systemd unit file for rpcbind.socket
service:rpcgssd - systemd unit file for rpcgssd
service:rpcidmapd - systemd unit file for rpcidmapd
service:rsyncd - systemd unit file for rsyncd
service:rsyncd.socket - systemd unit file for rsyncd.socket
service:rsyslog - systemd unit file for rsyslog
service:sshd - systemd unit file for sshd
service:sshd-keygen - systemd unit file for sshd-keygen
service:sshd.socket - systemd unit file for sshd.socket
service:svnserve - systemd unit file for svnserve
service:syslog.socket - systemd unit file for syslog.socket
service:systemd-ask-password-console - systemd unit file for systemd-ask-password-console
service:systemd-ask-password-plymouth - systemd unit file for systemd-ask-password-plymouth
service:systemd-ask-password-wall - systemd unit file for systemd-ask-password-wall
service:systemd-binfmt - systemd unit file for systemd-binfmt
service:systemd-bootchart - systemd unit file for systemd-bootchart
service:systemd-firstboot - systemd unit file for systemd-firstboot
service:systemd-fsck-root - systemd unit file for systemd-fsck-root
service:systemd-halt - systemd unit file for systemd-halt
service:systemd-hibernate - systemd unit file for systemd-hibernate
service:systemd-hostnamed - systemd unit file for systemd-hostnamed
service:systemd-hwdb-update - systemd unit file for systemd-hwdb-update
service:systemd-hybrid-sleep - systemd unit file for systemd-hybrid-sleep
service:systemd-importd - systemd unit file for systemd-importd
service:systemd-initctl - systemd unit file for systemd-initctl
service:systemd-initctl.socket - systemd unit file for systemd-initctl.socket
service:systemd-journal-catalog-update - systemd unit file for systemd-journal-catalog-update
service:systemd-journal-flush - systemd unit file for systemd-journal-flush
service:systemd-journald - systemd unit file for systemd-journald
service:systemd-journald.socket - systemd unit file for systemd-journald.socket
service:systemd-kexec - systemd unit file for systemd-kexec
service:systemd-localed - systemd unit file for systemd-localed
service:systemd-logind - systemd unit file for systemd-logind
service:systemd-machine-id-commit - systemd unit file for systemd-machine-id-commit
service:systemd-machined - systemd unit file for systemd-machined
service:systemd-modules-load - systemd unit file for systemd-modules-load
service:systemd-poweroff - systemd unit file for systemd-poweroff
service:systemd-quotacheck - systemd unit file for systemd-quotacheck
service:systemd-random-seed - systemd unit file for systemd-random-seed
service:systemd-readahead-collect - systemd unit file for systemd-readahead-collect
service:systemd-readahead-done - systemd unit file for systemd-readahead-done
service:systemd-readahead-drop - systemd unit file for systemd-readahead-drop
service:systemd-readahead-replay - systemd unit file for systemd-readahead-replay
service:systemd-reboot - systemd unit file for systemd-reboot
service:systemd-remount-fs - systemd unit file for systemd-remount-fs
service:systemd-shutdownd - systemd unit file for systemd-shutdownd
service:systemd-shutdownd.socket - systemd unit file for systemd-shutdownd.socket
service:systemd-suspend - systemd unit file for systemd-suspend
service:systemd-sysctl - systemd unit file for systemd-sysctl
service:systemd-tmpfiles-clean - systemd unit file for systemd-tmpfiles-clean
service:systemd-tmpfiles-setup - systemd unit file for systemd-tmpfiles-setup
service:systemd-tmpfiles-setup-dev - systemd unit file for systemd-tmpfiles-setup-dev
service:systemd-udev-settle - systemd unit file for systemd-udev-settle
service:systemd-udev-trigger - systemd unit file for systemd-udev-trigger
service:systemd-udevd - systemd unit file for systemd-udevd
service:systemd-udevd-control.socket - systemd unit file for systemd-udevd-control.socket
service:systemd-udevd-kernel.socket - systemd unit file for systemd-udevd-kernel.socket
service:systemd-update-done - systemd unit file for systemd-update-done
service:systemd-update-utmp - systemd unit file for systemd-update-utmp
service:systemd-update-utmp-runlevel - systemd unit file for systemd-update-utmp-runlevel
service:systemd-user-sessions - systemd unit file for systemd-user-sessions
service:systemd-vconsole-setup - systemd unit file for systemd-vconsole-setup
service:tcsd - systemd unit file for tcsd
service:tuned - systemd unit file for tuned
service:vgauthd - systemd unit file for vgauthd
service:vmtoolsd - systemd unit file for vmtoolsd
service:wpa_supplicant - systemd unit file for wpa_supplicant
systemd:arp-ethers - systemd unit file for arp-ethers
systemd:auditd - systemd unit file for auditd
systemd:auth-rpcgss-module - systemd unit file for auth-rpcgss-module
systemd:autovt@ - systemd unit file for autovt@
systemd:blk-availability - systemd unit file for blk-availability
systemd:brandbot - systemd unit file for brandbot
systemd:chrony-dnssrv@ - systemd unit file for chrony-dnssrv@
systemd:chrony-wait - systemd unit file for chrony-wait
systemd:chronyd - systemd unit file for chronyd
systemd:console-getty - systemd unit file for console-getty
systemd:console-shell - systemd unit file for console-shell
systemd:container-getty@ - systemd unit file for container-getty@
systemd:corosync - systemd unit file for corosync
systemd:corosync-notifyd - systemd unit file for corosync-notifyd
systemd:cpupower - systemd unit file for cpupower
systemd:crm_mon - systemd unit file for crm_mon
systemd:crond - systemd unit file for crond
systemd:dbus - systemd unit file for dbus
systemd:dbus-org.fedoraproject.FirewallD1 - systemd unit file for dbus-org.fedoraproject.FirewallD1
systemd:dbus-org.freedesktop.hostname1 - systemd unit file for dbus-org.freedesktop.hostname1
systemd:dbus-org.freedesktop.import1 - systemd unit file for dbus-org.freedesktop.import1
systemd:dbus-org.freedesktop.locale1 - systemd unit file for dbus-org.freedesktop.locale1
systemd:dbus-org.freedesktop.login1 - systemd unit file for dbus-org.freedesktop.login1
systemd:dbus-org.freedesktop.machine1 - systemd unit file for dbus-org.freedesktop.machine1
systemd:dbus-org.freedesktop.NetworkManager - systemd unit file for dbus-org.freedesktop.NetworkManager
systemd:dbus-org.freedesktop.nm-dispatcher - systemd unit file for dbus-org.freedesktop.nm-dispatcher
systemd:dbus.socket - systemd unit file for dbus.socket
systemd:debug-shell - systemd unit file for debug-shell
systemd:dm-event - systemd unit file for dm-event
systemd:dm-event.socket - systemd unit file for dm-event.socket
systemd:dracut-cmdline - systemd unit file for dracut-cmdline
systemd:dracut-initqueue - systemd unit file for dracut-initqueue
systemd:dracut-mount - systemd unit file for dracut-mount
systemd:dracut-pre-mount - systemd unit file for dracut-pre-mount
systemd:dracut-pre-pivot - systemd unit file for dracut-pre-pivot
systemd:dracut-pre-trigger - systemd unit file for dracut-pre-trigger
systemd:dracut-pre-udev - systemd unit file for dracut-pre-udev
systemd:dracut-shutdown - systemd unit file for dracut-shutdown
systemd:ebtables - systemd unit file for ebtables
systemd:emergency - systemd unit file for emergency
systemd:firewalld - systemd unit file for firewalld
systemd:fstrim - systemd unit file for fstrim
systemd:getty@ - systemd unit file for getty@
systemd:gssproxy - systemd unit file for gssproxy
systemd:halt-local - systemd unit file for halt-local
systemd:initrd-cleanup - systemd unit file for initrd-cleanup
systemd:initrd-parse-etc - systemd unit file for initrd-parse-etc
systemd:initrd-switch-root - systemd unit file for initrd-switch-root
systemd:initrd-udevadm-cleanup-db - systemd unit file for initrd-udevadm-cleanup-db
systemd:iprdump - systemd unit file for iprdump
systemd:iprinit - systemd unit file for iprinit
systemd:iprupdate - systemd unit file for iprupdate
systemd:irqbalance - systemd unit file for irqbalance
systemd:kdump - systemd unit file for kdump
systemd:kmod-static-nodes - systemd unit file for kmod-static-nodes
systemd:lvm2-lvmetad - systemd unit file for lvm2-lvmetad
systemd:lvm2-lvmetad.socket - systemd unit file for lvm2-lvmetad.socket
systemd:lvm2-lvmpolld - systemd unit file for lvm2-lvmpolld
systemd:lvm2-lvmpolld.socket - systemd unit file for lvm2-lvmpolld.socket
systemd:lvm2-monitor - systemd unit file for lvm2-monitor
systemd:lvm2-pvscan@ - systemd unit file for lvm2-pvscan@
systemd:messagebus - systemd unit file for messagebus
systemd:microcode - systemd unit file for microcode
systemd:NetworkManager - systemd unit file for NetworkManager
systemd:NetworkManager-dispatcher - systemd unit file for NetworkManager-dispatcher
systemd:NetworkManager-wait-online - systemd unit file for NetworkManager-wait-online
systemd:nfs - systemd unit file for nfs
systemd:nfs-blkmap - systemd unit file for nfs-blkmap
systemd:nfs-config - systemd unit file for nfs-config
systemd:nfs-idmap - systemd unit file for nfs-idmap
systemd:nfs-idmapd - systemd unit file for nfs-idmapd
systemd:nfs-lock - systemd unit file for nfs-lock
systemd:nfs-mountd - systemd unit file for nfs-mountd
systemd:nfs-rquotad - systemd unit file for nfs-rquotad
systemd:nfs-secure - systemd unit file for nfs-secure
systemd:nfs-server - systemd unit file for nfs-server
systemd:nfs-utils - systemd unit file for nfs-utils
systemd:nfslock - systemd unit file for nfslock
systemd:pacemaker - systemd unit file for pacemaker
systemd:pcsd - systemd unit file for pcsd
systemd:plymouth-halt - systemd unit file for plymouth-halt
systemd:plymouth-kexec - systemd unit file for plymouth-kexec
systemd:plymouth-poweroff - systemd unit file for plymouth-poweroff
systemd:plymouth-quit - systemd unit file for plymouth-quit
systemd:plymouth-quit-wait - systemd unit file for plymouth-quit-wait
systemd:plymouth-read-write - systemd unit file for plymouth-read-write
systemd:plymouth-reboot - systemd unit file for plymouth-reboot
systemd:plymouth-start - systemd unit file for plymouth-start
systemd:plymouth-switch-root - systemd unit file for plymouth-switch-root
systemd:polkit - systemd unit file for polkit
systemd:postfix - systemd unit file for postfix
systemd:quotaon - systemd unit file for quotaon
systemd:rc-local - systemd unit file for rc-local
systemd:rdisc - systemd unit file for rdisc
systemd:rescue - systemd unit file for rescue
systemd:rhel-autorelabel - systemd unit file for rhel-autorelabel
systemd:rhel-autorelabel-mark - systemd unit file for rhel-autorelabel-mark
systemd:rhel-configure - systemd unit file for rhel-configure
systemd:rhel-dmesg - systemd unit file for rhel-dmesg
systemd:rhel-domainname - systemd unit file for rhel-domainname
systemd:rhel-import-state - systemd unit file for rhel-import-state
systemd:rhel-loadmodules - systemd unit file for rhel-loadmodules
systemd:rhel-readonly - systemd unit file for rhel-readonly
systemd:rpc-gssd - systemd unit file for rpc-gssd
systemd:rpc-rquotad - systemd unit file for rpc-rquotad
systemd:rpc-statd - systemd unit file for rpc-statd
systemd:rpc-statd-notify - systemd unit file for rpc-statd-notify
systemd:rpcbind - systemd unit file for rpcbind
systemd:rpcbind.socket - systemd unit file for rpcbind.socket
systemd:rpcgssd - systemd unit file for rpcgssd
systemd:rpcidmapd - systemd unit file for rpcidmapd
systemd:rsyncd - systemd unit file for rsyncd
systemd:rsyncd.socket - systemd unit file for rsyncd.socket
systemd:rsyncd@ - systemd unit file for rsyncd@
systemd:rsyslog - systemd unit file for rsyslog
systemd:selinux-policy-migrate-local-changes@ - systemd unit file for selinux-policy-migrate-local-changes@
systemd:serial-getty@ - systemd unit file for serial-getty@
systemd:sshd - systemd unit file for sshd
systemd:sshd-keygen - systemd unit file for sshd-keygen
systemd:sshd.socket - systemd unit file for sshd.socket
systemd:sshd@ - systemd unit file for sshd@
systemd:svnserve - systemd unit file for svnserve
systemd:syslog.socket - systemd unit file for syslog.socket
systemd:systemd-ask-password-console - systemd unit file for systemd-ask-password-console
systemd:systemd-ask-password-plymouth - systemd unit file for systemd-ask-password-plymouth
systemd:systemd-ask-password-wall - systemd unit file for systemd-ask-password-wall
systemd:systemd-backlight@ - systemd unit file for systemd-backlight@
systemd:systemd-binfmt - systemd unit file for systemd-binfmt
systemd:systemd-bootchart - systemd unit file for systemd-bootchart
systemd:systemd-firstboot - systemd unit file for systemd-firstboot
systemd:systemd-fsck-root - systemd unit file for systemd-fsck-root
systemd:systemd-fsck@ - systemd unit file for systemd-fsck@
systemd:systemd-halt - systemd unit file for systemd-halt
systemd:systemd-hibernate - systemd unit file for systemd-hibernate
systemd:systemd-hibernate-resume@ - systemd unit file for systemd-hibernate-resume@
systemd:systemd-hostnamed - systemd unit file for systemd-hostnamed
systemd:systemd-hwdb-update - systemd unit file for systemd-hwdb-update
systemd:systemd-hybrid-sleep - systemd unit file for systemd-hybrid-sleep
systemd:systemd-importd - systemd unit file for systemd-importd
systemd:systemd-initctl - systemd unit file for systemd-initctl
systemd:systemd-initctl.socket - systemd unit file for systemd-initctl.socket
systemd:systemd-journal-catalog-update - systemd unit file for systemd-journal-catalog-update
systemd:systemd-journal-flush - systemd unit file for systemd-journal-flush
systemd:systemd-journald - systemd unit file for systemd-journald
systemd:systemd-journald.socket - systemd unit file for systemd-journald.socket
systemd:systemd-kexec - systemd unit file for systemd-kexec
systemd:systemd-localed - systemd unit file for systemd-localed
systemd:systemd-logind - systemd unit file for systemd-logind
systemd:systemd-machine-id-commit - systemd unit file for systemd-machine-id-commit
systemd:systemd-machined - systemd unit file for systemd-machined
systemd:systemd-modules-load - systemd unit file for systemd-modules-load
systemd:systemd-nspawn@ - systemd unit file for systemd-nspawn@
systemd:systemd-poweroff - systemd unit file for systemd-poweroff
systemd:systemd-quotacheck - systemd unit file for systemd-quotacheck
systemd:systemd-random-seed - systemd unit file for systemd-random-seed
systemd:systemd-readahead-collect - systemd unit file for systemd-readahead-collect
systemd:systemd-readahead-done - systemd unit file for systemd-readahead-done
systemd:systemd-readahead-drop - systemd unit file for systemd-readahead-drop
systemd:systemd-readahead-replay - systemd unit file for systemd-readahead-replay
systemd:systemd-reboot - systemd unit file for systemd-reboot
systemd:systemd-remount-fs - systemd unit file for systemd-remount-fs
systemd:systemd-rfkill@ - systemd unit file for systemd-rfkill@
systemd:systemd-shutdownd - systemd unit file for systemd-shutdownd
systemd:systemd-shutdownd.socket - systemd unit file for systemd-shutdownd.socket
systemd:systemd-suspend - systemd unit file for systemd-suspend
systemd:systemd-sysctl - systemd unit file for systemd-sysctl
systemd:systemd-tmpfiles-clean - systemd unit file for systemd-tmpfiles-clean
systemd:systemd-tmpfiles-setup - systemd unit file for systemd-tmpfiles-setup
systemd:systemd-tmpfiles-setup-dev - systemd unit file for systemd-tmpfiles-setup-dev
systemd:systemd-udev-settle - systemd unit file for systemd-udev-settle
systemd:systemd-udev-trigger - systemd unit file for systemd-udev-trigger
systemd:systemd-udevd - systemd unit file for systemd-udevd
systemd:systemd-udevd-control.socket - systemd unit file for systemd-udevd-control.socket
systemd:systemd-udevd-kernel.socket - systemd unit file for systemd-udevd-kernel.socket
systemd:systemd-update-done - systemd unit file for systemd-update-done
systemd:systemd-update-utmp - systemd unit file for systemd-update-utmp
systemd:systemd-update-utmp-runlevel - systemd unit file for systemd-update-utmp-runlevel
systemd:systemd-user-sessions - systemd unit file for systemd-user-sessions
systemd:systemd-vconsole-setup - systemd unit file for systemd-vconsole-setup
systemd:tcsd - systemd unit file for tcsd
systemd:teamd@ - systemd unit file for teamd@
systemd:tuned - systemd unit file for tuned
systemd:vgauthd - systemd unit file for vgauthd
systemd:vmtoolsd - systemd unit file for vmtoolsd
systemd:wpa_supplicant - systemd unit file for wpa_supplicant
```

2. 設定
---
## VIPの構築

```
[root@SYSLOG01 ~]# pcs resource create Virtual_IP ocf:heartbeat:IPaddr2 ip=192.168.1.30 cidr_netmask=24 op monitor interval=5s
```

## メンテナンスモード

```
[root@SYSLOG01 ~]# pcs property set maintenance-mode=true/false
```