Update minimal configuration example with dev mode #229
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This updates the minimal example to use a loopback API interface, for consistency across hosts. It also documents the procedure to enable dev mode for all or specific services.
msherman64
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Oct 6, 2022
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| # This example assumes that `lo` has the IP `127.0.0.1/8` | ||
| network_interface: "lo" | ||
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| # Keepalived will manage this IP address, which must be in the same | ||
| # subnet as the interface IP above. Haproxy will bind to this IP, and the | ||
| # openstack ADMIN and INTERNAL APIs listen here. | ||
| kolla_internal_vip_address: "127.0.0.254" |
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Turns out this breaks keepalived!
Due to the keepalived config: https://github.com/ChameleonCloud/kolla-ansible/blob/19eb03834a543a013ed820a7b370ec99e2825616/ansible/roles/loadbalancer/templates/keepalived/keepalived.conf.j2#L11
It will attempt to use the loopback as the primary vrrp interface, and fail to start. This config is fine for the case where haproxy is disabled, but not otherwise.
A workaround is to create a vlan subinterface, e.g. eth3.1000 to use instead.
The only requirment is that the interface is somehow "valid" for keepalived to watch.
msherman64
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228-add-defaultsyml-for-minimal-development-configuration
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This updates the minimal example to use a loopback API interface, for
consistency across hosts. It also documents the procedure to enable
dev mode for all or specific services.