在openstack云平台中，使用命令行创建云主机操作步骤
在openstack云平台中，使用命令行创建云主机操作步骤
创建镜像
[root@controller ~]# source /etc/keystone/admin-openrc.sh
[root@controller ~]#
[root@controller ~]# glance image-create --name "cirros" --disk-format qcow2 --container-format bare --progress < cirros-0.5.1-x86_64-disk.img
[=============================>] 100%
+------------------+--------------------------------------+
| Property | Value |
+------------------+--------------------------------------+
| checksum | 1d3062cd89af34e419f7100277f38b2b |
| container_format | bare |
| created_at | 2020-11-12T02:56:58Z |
| disk_format | qcow2 |
| id | 911ddbd7-4e23-4b8b-b575-932f55925b72 |
| min_disk | 0 |
| min_ram | 0 |
| name | cirros |
| owner | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| protected | False |
| size | 16338944 |
| status | active |
| tags | [] |
| updated_at | 2020-11-12T02:56:58Z |
| virtual_size | None |
| visibility | shared |
+------------------+--------------------------------------+
[root@controller ~]# openstack image list
+--------------------------------------+-----------+--------+
| ID | Name | Status |
+--------------------------------------+-----------+--------+
| 606be300-ec09-4427-9cf2-3185c56a2ac3 | centos7.5 | active |
| 911ddbd7-4e23-4b8b-b575-932f55925b72 | cirros | active |
| fceb546b-2258-40cf-98c3-bbaf77c1d932 | rabbitmq1 | active |
| 6a5dce2e-0c68-41d4-9e87-7e45aeb66210 | rabbitmq2 | active |
| 37ff3c1c-861e-4001-b5ac-e3ab4839b6c5 | rabbitmq3 | active |
创建云主机类型
[root@controller ~]# nova help flavor-create
usage: nova flavor-create <name> <id> <ram> <disk> <vcpus>
[root@controller ~]# nova flavor-create Fine 3 1024 10 1
+----+------+-----------+------+-----------+------+-------+-------------+-----------+-------------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public | Description |
+----+------+-----------+------+-----------+------+-------+-------------+-----------+-------------+
| 3 | Fine | 1024 | 10 | 0 | | 1 | 1.0 | True | - |
+----+------+-----------+------+-----------+------+-------+-------------+-----------+-------------+
创建云主机外部网络
# 创建网络
[root@controller ~]# openstack help network create
[root@controller ~]# openstack network create --project admin --provider-network-type flat --provider-physical-network provider --external extnet
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2020-11-12T03:18:51Z |
| description | |
| dns_domain | None |
| id | ba728255-c364-4e60-924e-0c3f4da28ba1 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| is_default | False |
| is_vlan_transparent | None |
| mtu | 1500 |
| name | extnet |
| port_security_enabled | True |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| provider:network_type | flat |
| provider:physical_network | provider |
| provider:segmentation_id | None |
| qos_policy_id | None |
| revision_number | 5 |
| router:external | External |
| segments | None |
| shared | False |
| status | ACTIVE |
| subnets | |
| tags | |
| updated_at | 2020-11-12T03:18:53Z |
+---------------------------+--------------------------------------+
#创建子网
[root@controller ~]# openstack help subnet create
[root@controller ~]# openstack subnet create --network extnet --subnet-range 192.168.200.0/24 --gateway 192.168.200.1 --allocation-pool start=192.168.200.100,end=192.168.200.200 --dhcp extsubnet
+-------------------+--------------------------------------+
| Field | Value |
+-------------------+--------------------------------------+
| allocation_pools | 192.168.200.100-192.168.200.200 |
| cidr | 192.168.200.0/24 |
| created_at | 2020-11-12T03:28:36Z |
| description | |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 192.168.200.1 |
| host_routes | |
| id | 454889bd-fe51-4fd1-9747-18524f82bf8f |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| name | extsubnet |
| network_id | ba728255-c364-4e60-924e-0c3f4da28ba1 |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| revision_number | 0 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2020-11-12T03:28:36Z |
+-------------------+--------------------------------------+
[root@controller ~]# neutron subnet-list
+--------------------------------------+------------+----------------------------------+------------------+--------------------------------------------------------+
| id | name | tenant_id | cidr | allocation_pools |
+--------------------------------------+------------+----------------------------------+------------------+--------------------------------------------------------+
| 454889bd-fe51-4fd1-9747-18524f82bf8f | extsubnet | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | 192.168.200.0/24 | {
"start": "192.168.200.100", "end": "192.168.200.200"} |
+--------------------------------------+------------+----------------------------------+------------------+--------------------------------------------------------+
创建云主机内部网络
#创建网络
[root@controller ~]# openstack network create --internal intnet
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2020-11-12T03:35:43Z |
| description | |
| dns_domain | None |
| id | 2d7c0af4-3ce9-458f-9594-6b9a15f738a7 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| is_default | False |
| is_vlan_transparent | None |
| mtu | 1450 |
| name | intnet |
| port_security_enabled | True |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| provider:network_type | vxlan |
| provider:physical_network | None |
| provider:segmentation_id | 193 |
| qos_policy_id | None |
| revision_number | 2 |
| router:external | Internal |
| segments | None |
| shared | False |
| status | ACTIVE |
| subnets | |
| tags | |
| updated_at | 2020-11-12T03:35:43Z |
+---------------------------+--------------------------------------+
#创建子网
[root@controller ~]# openstack subnet create --subnet-range 10.10.0.0/24 --gateway 10.10.0.1 --dhcp --network intnet intsubnet
+-------------------+--------------------------------------+
| Field | Value |
+-------------------+--------------------------------------+
| allocation_pools | 10.10.0.2-10.10.0.254 |
| cidr | 10.10.0.0/24 |
| created_at | 2020-11-12T03:39:04Z |
| description | |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 10.10.0.1 |
| host_routes | |
| id | 0d409a46-213d-4502-8a82-930120aca955 |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| name | intsubnet |
| network_id | 2d7c0af4-3ce9-458f-9594-6b9a15f738a7 |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| revision_number | 0 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2020-11-12T03:39:04Z |
+-------------------+--------------------------------------+
添加路由
[root@controller ~]# openstack router create ext-router
+-------------------------+--------------------------------------+
| Field | Value |
+-------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2020-11-12T03:46:28Z |
| description | |
| distributed | False |
| external_gateway_info | None |
| flavor_id | None |
| ha | False |
| id | 26da212b-b340-443c-b16e-e59c347e0dc5 |
| name | ext-router |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| revision_number | 0 |
| routes | |
| status | ACTIVE |
| tags | |
| updated_at | 2020-11-12T03:46:28Z |
+-------------------------+--------------------------------------+
[root@controller ~]# openstack router set --enable --enable-snat --external-gateway extnet ext-router
[root@controller ~]# openstack router add subnet ext-router intsubnet
或者
[root@controller ~]# neutron router-interface-add ext-router intsubnet
Added interface 74072f7b-a021-4718-82e2-08225433e0f9 to router ext-router.
启动云主机
[root@controller ~]# nova boot --image cirros --flavor Fine --nic net-name=intnet VM1
+--------------------------------------+-----------------------------------------------+
| Property | Value |
+--------------------------------------+-----------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | |
| OS-EXT-SRV-ATTR:host | - |
| OS-EXT-SRV-ATTR:hostname | vm1 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | - |
| OS-EXT-SRV-ATTR:instance_name | |
| OS-EXT-SRV-ATTR:kernel_id | |
| OS-EXT-SRV-ATTR:launch_index | 0 |
| OS-EXT-SRV-ATTR:ramdisk_id | |
| OS-EXT-SRV-ATTR:reservation_id | r-9uj6yq3x |
| OS-EXT-SRV-ATTR:root_device_name | - |
| OS-EXT-SRV-ATTR:user_data | - |
| OS-EXT-STS:power_state | 0 |
| OS-EXT-STS:task_state | scheduling |
| OS-EXT-STS:vm_state | building |
| OS-SRV-USG:launched_at | - |
| OS-SRV-USG:terminated_at | - |
| accessIPv4 | |
| accessIPv6 | |
| adminPass | se2mFnGeWT6g |
| config_drive | |
| created | 2020-11-12T04:04:37Z |
| description | - |
| flavor:disk | 10 |
| flavor:ephemeral | 0 |
| flavor:extra_specs | {
} |
| flavor:original_name | Fine |
| flavor:ram | 1024 |
| flavor:swap | 0 |
| flavor:vcpus | 1 |
| hostId | |
| host_status | |
| id | 635db1f4-af98-464f-aec6-dee06249faca |
| image | cirros (911ddbd7-4e23-4b8b-b575-932f55925b72) |
| key_name | - |
| locked | False |
| metadata | {
} |
| name | VM1 |
| os-extended-volumes:volumes_attached | [] |
| progress | 0 |
| security_groups | default |
| status | BUILD |
| tags | [] |
| tenant_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| updated | 2020-11-12T04:04:37Z |
| user_id | 23938c4e943d4aca82184b72e8626ad1 |
+--------------------------------------+-----------------------------------------------+
创建浮动IP地址
[root@controller ~]# neutron help floatingip-create
[root@controller ~]# neutron floatingip-create extnet
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Created a new floatingip:
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| created_at | 2020-11-12T05:40:15Z |
| description | |
| fixed_ip_address | |
| floating_ip_address | 192.168.200.109 |
| floating_network_id | ba728255-c364-4e60-924e-0c3f4da28ba1 |
| id | 9fb1f908-167c-4f48-9113-1d061136eff1 |
| port_id | |
| project_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| revision_number | 0 |
| router_id | |
| status | DOWN |
| tags | |
| tenant_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| updated_at | 2020-11-12T05:40:15Z |
+---------------------+--------------------------------------+
[root@controller ~]# neutron floatingip-list
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
| id | tenant_id | fixed_ip_address | floating_ip_address | port_id |
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
| 9fb1f908-167c-4f48-9113-1d061136eff1 | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | | 192.168.200.109 | |
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
绑定浮动IP地址
[root@controller ~]# neutron help | grep floatingip
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
floatingip-associate Create a mapping between a floating IP and a fixed IP.
floatingip-create Create a floating IP for a given tenant.
floatingip-delete Delete a given floating IP.
floatingip-disassociate Remove a mapping from a floating IP to a fixed IP.
floatingip-list List floating IPs that belong to a given tenant.
floatingip-show Show information of a given floating IP.
[root@controller ~]# neutron help floatingip-associate
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
usage: neutron floatingip-associate [-h] [--fixed-ip-address FIXED_IP_ADDRESS]
FLOATINGIP_ID PORT
Create a mapping between a floating IP and a fixed IP.
positional arguments:
FLOATINGIP_ID ID of the floating IP to associate.
PORT ID or name of the port to be associated with the
floating IP.
optional arguments:
-h, --help show this help message and exit
--fixed-ip-address FIXED_IP_ADDRESS
IP address on the port (only required if port has
multiple IPs).
[root@controller ~]# neutron floatingip-list
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
| id | tenant_id | fixed_ip_address | floating_ip_address | port_id |
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
| 9fb1f908-167c-4f48-9113-1d061136eff1 | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | | 192.168.200.109 | |
+--------------------------------------+----------------------------------+------------------+---------------------+---------+
[root@controller ~]# neutron port-list
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+--------------------------------------+------+----------------------------------+-------------------+----------------------------------------------------------------------------------------+
| id | name | tenant_id | mac_address | fixed_ips |
+--------------------------------------+------+----------------------------------+-------------------+----------------------------------------------------------------------------------------+
| 098f73d4-62f1-470c-8239-bc99e29da966 | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:4e:e6:57 | {
"subnet_id": "65a2feb3-f4bc-4300-b0d5-a1d0cfa6045d", "ip_address": "10.0.0.2"} |
| 2c773859-32cb-47f3-80c2-79432bd8e6e3 | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:ef:50:f4 | {
"subnet_id": "0d409a46-213d-4502-8a82-930120aca955", "ip_address": "10.10.0.3"} |
| 3d784819-c977-4a70-a331-8e3c92117d69 | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:f9:32:3e | {
"subnet_id": "65a2feb3-f4bc-4300-b0d5-a1d0cfa6045d", "ip_address": "10.0.0.7"} |
| 46f615e7-ad4c-4cd3-ba12-9d65bdbfff9c | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:f2:37:92 | {
"subnet_id": "0d409a46-213d-4502-8a82-930120aca955", "ip_address": "10.10.0.1"} |
| 5f98cdd5-ffff-452b-9777-6170ab4edc66 | | | fa:16:3e:ce:56:ca | {
"subnet_id": "454889bd-fe51-4fd1-9747-18524f82bf8f", "ip_address": "192.168.200.106"} |
| 64c60398-d6fc-46f7-92b7-d153cd295f9c | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:3d:d1:16 | {
"subnet_id": "454889bd-fe51-4fd1-9747-18524f82bf8f", "ip_address": "192.168.200.100"} |
| 7a784aab-666e-4fad-b80c-7a2e106c16b0 | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:e2:de:d2 | {
"subnet_id": "65a2feb3-f4bc-4300-b0d5-a1d0cfa6045d", "ip_address": "10.0.0.11"} |
| 7dc4797a-8b1d-4f1b-a5ad-b764d42d335e | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:29:3f:d0 | {
"subnet_id": "0d409a46-213d-4502-8a82-930120aca955", "ip_address": "10.10.0.2"} |
| 8ea5657f-e283-40ff-8f4d-b2725269ab5a | | | fa:16:3e:fd:a1:0f | {
"subnet_id": "454889bd-fe51-4fd1-9747-18524f82bf8f", "ip_address": "192.168.200.109"} |
| e6e8832e-03eb-4043-a4be-eed57c24e021 | | 1bf8b326eb3c4fb1b6fa2aa7370bed64 | fa:16:3e:61:16:03 | {
"subnet_id": "65a2feb3-f4bc-4300-b0d5-a1d0cfa6045d", "ip_address": "10.0.0.3"} |
+--------------------------------------+------+----------------------------------+-------------------+----------------------------------------------------------------------------------------+
[root@controller ~]# neutron floatingip-associate --fixed-ip-address 10.10.0.3 9fb1f908-167c-4f48-9113-1d061136eff1 2c773859-32cb-47f3-80c2-79432bd8e6e3
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Associated floating IP 9fb1f908-167c-4f48-9113-1d061136eff1
创建卷lvm
[root@controller ~]# cinder create --display-name lvm 40
+--------------------------------+--------------------------------------+
| Property | Value |
+--------------------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2020-11-12T07:19:14.000000 |
| description | None |
| encrypted | False |
| id | 184ab55d-a1cb-4fa9-8aec-885db1feb7ee |
| metadata | {
} |
| migration_status | None |
| multiattach | False |
| name | lvm |
| os-vol-host-attr:host | None |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 1bf8b326eb3c4fb1b6fa2aa7370bed64 |
| replication_status | None |
| size | 40 |
| snapshot_id | None |
| source_volid | None |
| status | creating |
| updated_at | None |
| user_id | 23938c4e943d4aca82184b72e8626ad1 |
| volume_type | None |
+--------------------------------+--------------------------------------+
[root@controller ~]# cinder list
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
| ID | Status | Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
| 184ab55d-a1cb-4fa9-8aec-885db1feb7ee | available | lvm | 40 | - | false | |
| 79f72f3b-5de7-46fe-902c-1f2cb233adc8 | available | lvm4 | 20 | - | false | |
| 8ae8b2b6-430d-4dc0-a0e4-618d9e0a2345 | available | lvm | 40 | - | false | |
| ccf6cf00-2a59-4c6d-b6bb-1e1bffcc4e68 | available | lvm2 | 20 | - | false | |
| da1525f3-10af-4ec4-b3e1-33e65c92414a | available | lvm3 | 20 | - | false | |
| e727aead-1b70-498a-b268-9e643b47d2bf | available | lvm1 | 20 | - | false | |
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
登录之前创建的云主机“VM1”
[C:\~]$ ssh 192.168.200.109
Connecting to 192.168.200.109:22...
Connection established.
To escape to local shell, press Ctrl+Alt+].
sh: /usr/bin/xauth: not found
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc pfifo_fast qlen 1000
link/ether fa:16:3e:ef:50:f4 brd ff:ff:ff:ff:ff:ff
inet 10.10.0.3/24 brd 10.10.0.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:feef:50f4/64 scope link
valid_lft forever preferred_lft forever
查看是否连接成功
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 252:0 0 10G 0 disk
|-vda1 252:1 0 10G 0 part /
`-vda15 252:15 0 8M 0 part
vdb 252:16 0 40G 0 disk
创建RAID 5
前期准备
Connecting to 192.168.200.101:22...
Connection established.
To escape to local shell, press Ctrl+Alt+].
WARNING! The remote SSH server rejected X11 forwarding request.
Last login: Fri Jul 26 13:49:02 2019
#########################
# Welcome to XianDian #
#########################
[root@vm2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 253:0 0 50G 0 disk
└─vda1 253:1 0 50G 0 part /
vdb 253:16 0 40G 0 disk
[root@vm2 ~]#
[root@vm2 ~]# mdadm -Cv /dev/md5 -l 5 -n 3 /dev/vdb1 /dev/vdb2 /dev/vdb3 --spare-devices=1 /dev/vdb4
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 512K
mdadm: partition table exists on /dev/vdb4
mdadm: partition table exists on /dev/vdb4 but will be lost or
meaningless after creating array
mdadm: size set to 10475520K
Continue creating array?
Continue creating array? (y/n) y
mdadm: Fail create md5 when using /sys/module/md_mod/parameters/new_array
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md5 started.
[root@vm2 ~]# mdadm -Ds
ARRAY /dev/md5 metadata=1.2 spares=2 name=vm2.novalocal:5 UUID=f5f81036:00c3aee7:33b1ebdf:f7fbf9c3
[root@vm2 ~]# mdadm -D /dev/md5
/dev/md5:
Version : 1.2
Creation Time : Thu Nov 12 07:48:03 2020
Raid Level : raid5
Array Size : 20951040 (19.98 GiB 21.45 GB)
Used Dev Size : 10475520 (9.99 GiB 10.73 GB)
Raid Devices : 3
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Nov 12 07:48:04 2020
State : clean, degraded, recovering
Active Devices : 2
Working Devices : 4
Failed Devices : 0
Spare Devices : 2
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : resync
Rebuild Status : 3% complete
Name : vm2.novalocal:5 (local to host vm2.novalocal)
UUID : f5f81036:00c3aee7:33b1ebdf:f7fbf9c3
Events : 1
Number Major Minor RaidDevice State
0 253 17 0 active sync /dev/vdb1
1 253 18 1 active sync /dev/vdb2
4 253 19 2 spare rebuilding /dev/vdb3
3 253 20 - spare /dev/vdb4
[root@vm2 ~]# mdadm -D /dev/md5
/dev/md5:
Version : 1.2
Creation Time : Thu Nov 12 07:48:03 2020
Raid Level : raid5
Array Size : 20951040 (19.98 GiB 21.45 GB)
Used Dev Size : 10475520 (9.99 GiB 10.73 GB)
Raid Devices : 3
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Nov 12 07:52:22 2020
State : clean
Active Devices : 3
Working Devices : 4
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : resync
Name : vm2.novalocal:5 (local to host vm2.novalocal)
UUID : f5f81036:00c3aee7:33b1ebdf:f7fbf9c3
Events : 18
Number Major Minor RaidDevice State
0 253 17 0 active sync /dev/vdb1
1 253 18 1 active sync /dev/vdb2
4 253 19 2 active sync /dev/vdb3
3 253 20 - spare /dev/vdb4
[root@vm2 ~]#
模拟磁盘损坏
[root@vm2 ~]# mdadm -f /dev/md5 /dev/vdb1
mdadm: set /dev/vdb1 faulty in /dev/md5
[root@vm2 ~]# mdadm -D /dev/md5
/dev/md5:
Version : 1.2
Creation Time : Thu Nov 12 07:48:03 2020
Raid Level : raid5
Array Size : 20951040 (19.98 GiB 21.45 GB)
Used Dev Size : 10475520 (9.99 GiB 10.73 GB)
Raid Devices : 3
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Nov 12 07:55:04 2020
State : clean, degraded, recovering
Active Devices : 2
Working Devices : 3
Failed Devices : 1
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : resync
Rebuild Status : 0% complete
Name : vm2.novalocal:5 (local to host vm2.novalocal)
UUID : f5f81036:00c3aee7:33b1ebdf:f7fbf9c3
Events : 20
Number Major Minor RaidDevice State
3 253 20 0 spare rebuilding /dev/vdb4
1 253 18 1 active sync /dev/vdb2
4 253 19 2 active sync /dev/vdb3
0 253 17 - faulty /dev/vdb1
[root@vm2 ~]# mdadm -D /dev/md5
/dev/md5:
Version : 1.2
Creation Time : Thu Nov 12 07:48:03 2020
Raid Level : raid5
Array Size : 20951040 (19.98 GiB 21.45 GB)
Used Dev Size : 10475520 (9.99 GiB 10.73 GB)
Raid Devices : 3
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Nov 12 08:00:57 2020
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 1
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : resync
Name : vm2.novalocal:5 (local to host vm2.novalocal)
UUID : f5f81036:00c3aee7:33b1ebdf:f7fbf9c3
Events : 37
Number Major Minor RaidDevice State
3 253 20 0 active sync /dev/vdb4
1 253 18 1 active sync /dev/vdb2
4 253 19 2 active sync /dev/vdb3
0 253 17 - faulty /dev/vdb1
[root@vm2 ~]#