ansible - 如何设置和解析 openshift_master_cluster_hostname？
问题描述
我正在尝试使用多个主机安装 OKD 3.11，但从未成功。我正在使用三个主节点、两个工作节点和一个 lb 节点。失败与设置和解析“openshift_master_cluster_hostname”和“openshift_master_cluster_public_hostname”有关。这是我的库存文件、DNS 设置和 /etc/hosts 文件。你能告诉我有什么问题吗？
DNS 服务器在 ubuntu 16.04 上运行。/etc/bind/db.zanity.net
;
; BIND data file for zone "zanity.net"
;
$TTL 604800
@ IN SOA localhost. root.localhost. (
2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS localhost.
@ IN A 127.0.0.1
osc-console IN A 192.168.219.51
osc-console.internal IN A 192.168.219.51
osc-lb IN A 192.168.219.50
osc-master01 IN A 192.168.219.51
osc-master02 IN A 192.168.219.52
osc-master03 IN A 192.168.219.53
osc-node01 IN A 192.168.219.54
主节点和工作节点的 /etc/hosts 文件。
[root@osc-master01 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.219.100 linux-server
192.168.219.50 osc-lb
192.168.219.51 osc-console
192.168.219.51 osc-console.internal
192.168.219.51 osc-master01
192.168.219.52 osc-master02
192.168.219.53 osc-master03
192.168.219.54 osc-node01
192.168.219.55 osc-node02
master01（安装节点）/etc/ansible/hosts 中的清单文件
[OSEv3:children]
masters
nodes
nfs
etcd
lb
[OSEv3:vars]
ansible_ssh_user=root
openshift_deployment_type=origin
openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]
openshift_master_htpasswd_users={'admin': '$apr1$RbOvaj8r$LEqJqG6V/O/i7Pf...'}
openshift_master_cluster_method=native
openshift_master_cluster_hostname=osc-console.internal.zanity.net
openshift_master_cluster_public_hostname=osc-console.zanity.net
openshift_node_groups=[{'name': 'node-config-master', 'labels': ['node-role.kubernetes.io/master=true']}, {'name': 'node-config-infra', 'labels': ['node-role.kubernetes.io/infra=true']}, {'name': 'node-config-compute', 'labels': ['node-role.kubernetes.io/compute=true']}, {'name': 'node-config-compute-storage', 'labels': ['node-role.kubernetes.io/compute-storage=true']}]
openshift_disable_check=memory_availability,docker_image_availability
[masters]
osc-master01.zanity.net
osc-master02.zanity.net
osc-master03.zanity.net
[nodes]
osc-master01.zanity.net openshift_node_group_name='node-config-master'
osc-master02.zanity.net openshift_node_group_name='node-config-master'
osc-master03.zanity.net openshift_node_group_name='node-config-master'
osc-node01.zanity.net openshift_node_group_name='node-config-compute'
osc-node02.zanity.net openshift_node_group_name='node-config-compute'
osc-node02.zanity.net openshift_node_group_name='node-config-infra'
[etcd]
osc-master01.zanity.net
osc-master02.zanity.net
osc-master03.zanity.net
[nfs]
osc-master02.zanity.net
[lb]
osc-lb.zanity.net
[root@osc-master01 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.219.100 linux-server
192.168.219.50 osc-lb
192.168.219.51 osc-console
192.168.219.51 osc-console.internal
192.168.219.51 osc-master01
192.168.219.52 osc-master02
192.168.219.53 osc-master03
192.168.219.54 osc-node01
192.168.219.55 osc-node02
我尝试了以下组合来解析主机名和公共主机名的地址，但都失败了。案例 1) 192.168.219.50 osc-lb 192.168.219.50 osc-console 192.168.219.50 osc-console.internal => 失败并显示“控制平面吊舱没有出现”
案例 2) 92.168.219.50 osc-lb 192.168.219.50 osc-console 192.168.219.51 osc-console.internal => 因“控制平面 pod 未出现”而失败或 => 因与客户认证相关的问题而失败。
案例 3) 92.168.219.50 osc-lb 192.168.219.51 osc-console 192.168.219.51 osc-console.internal => 失败并出现以下问题
PLAY RECAP **************************************************************************************************************************************************************************************************************************************************************************
localhost : ok=13 changed=0 unreachable=0 failed=0 skipped=3 rescued=0 ignored=0
osc-lb.zanity.net : ok=9 changed=0 unreachable=0 failed=1 skipped=26 rescued=0 ignored=0
osc-master01.zanity.net : ok=303 changed=120 unreachable=0 failed=0 skipped=237 rescued=0 ignored=0
osc-master02.zanity.net : ok=254 changed=104 unreachable=0 failed=0 skipped=217 rescued=0 ignored=0
osc-master03.zanity.net : ok=243 changed=103 unreachable=0 failed=1 skipped=213 rescued=0 ignored=0
osc-node01.zanity.net : ok=100 changed=34 unreachable=0 failed=0 skipped=96 rescued=0 ignored=0
osc-node02.zanity.net : ok=100 changed=34 unreachable=0 failed=0 skipped=96 rescued=0 ignored=0
INSTALLER STATUS ********************************************************************************************************************************************************************************************************************************************************************
Initialization : Complete (0:00:23)
Health Check : Complete (0:00:12)
Node Bootstrap Preparation : Complete (0:05:43)
etcd Install : Complete (0:00:42)
NFS Install : Complete (0:00:04)
Load Balancer Install : Complete (0:00:00)
Master Install : In Progress (0:22:19)
This phase can be restarted by running: playbooks/openshift-master/config.yml
Tuesday 08 October 2019 16:07:08 +0900 (0:18:46.369) 0:29:22.463 *******
===============================================================================
openshift_control_plane : Wait for all control plane pods to become ready ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1126.37s
openshift_node : Install node, clients, and conntrack packages ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 224.22s
openshift_control_plane : Wait for control plane pods to appear ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 94.48s
openshift_ca : Install the base package for admin tooling ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 12.48s
Run health checks (install) - EL -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 11.84s
openshift_excluder : Install openshift excluder - yum ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 10.33s
openshift_excluder : Install docker excluder - yum --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 8.80s
openshift_cli : Install clients ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 5.68s
openshift_master_certificates : copy ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 5.63s
openshift_node : Update journald setup --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 4.53s
tuned : Ensure files are populated from templates ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3.94s
openshift_master_certificates : Check status of master certificates ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3.53s
openshift_node : Add iptables allow rules ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 3.17s
openshift_control_plane : Copy static master scripts ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3.12s
Gathering Facts -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3.12s
openshift_control_plane : Prepare master static pods ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3.07s
tuned : Restart tuned service ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 2.33s
openshift_node : install needed rpm(s) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2.13s
openshift_node : create directories for bootstrapping --------------------------------------------------------------------------------------------------------------------------------------------- 2.11s
openshift_control_plane : Ensure htpasswd file exists ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 2.07s
Failure summary:
1. Hosts: osc-lb.zanity.net
Play: Initialize cluster facts
Task: Gather Cluster facts
Message: MODULE FAILURE
See stdout/stderr for the exact error
2. Hosts: osc-master03.zanity.net
Play: Configure masters
Task: Wait for all control plane pods to become ready
解决方案
尝试将其放置osc-console.internal.zanity.net在与其他主机相同的级别以避免任何 DNS 解析问题。例如，重命名它osc-console-internal.zanity.net。
此外，根据文档，openshift_master_cluster_hostname并且openshift_master_cluster_public_hostname必须由平衡服务支持。如果您使用的是安装期间部署的平衡器，请检查
- 负载平衡服务由 ansible playbook 正确配置，并配置为在 port 上的主节点之间进行平衡
:8443。 openshift_master_cluster_hostname您的 lb 服务点的 dns 记录。
[...]
# Native high availability cluster method with optional load balancer.
# If no lb group is defined installer assumes that a load balancer has
# been preconfigured. For installation the value of
# openshift_master_cluster_hostname must resolve to the load balancer
# or to one or all of the masters defined in the inventory if no load
# balancer is present.
[...]
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