Joshua M. Boniface
595cf1782c
MariaDB+Galera was terribly unstable, with the cluster failing to start or dying randomly, and generally seemed incredibly unsuitable for an HA solution. This commit switches the DNS aggregator SQL backend to PostgreSQL, implemented via Patroni HA. It also manages the Patroni state, forcing the primary instance to follow the PVC coordinator, such that the active DNS Aggregator instance is always able to communicate read+write with the local system. This required some logic changes to how the DNS Aggregator worked, specifically ensuring that database changes aren't attempted while the instance isn't actively running - to be honest this was a bug anyways that had just never been noticed. Closes #34
143 lines
6.2 KiB
YAML
143 lines
6.2 KiB
YAML
# pvcd cluster configuration file example
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#
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# This configuration file specifies details for this node in PVC. Multiple node
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# blocks can be added but only the one matching the current system nodename will
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# be used by the local daemon. Default values are not supported; the values in
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# this sample configuration are considered defaults and, with adjustment of the
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# nodename section and coordinators list, can be used as-is on a Debian system.
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#
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# Copy this example to /etc/pvc/pvcd.conf and edit to your needs
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pvc:
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# node: The (short) hostname of the node, set during provisioning
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node: pvc-hv1
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# functions: The daemon functions to enable
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functions:
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# enable_hypervisor: Enable or disable hypervisor functionality
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# This should never be False except in very advanced usecases
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enable_hypervisor: True
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# enable_networking: Enable or disable virtual networking and routing functionality
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enable_networking: True
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# enable_storage: Enable or disable Ceph storage management functionality
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enable_storage: True
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# cluster: Cluster-level configuration
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cluster:
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# coordinators: The list of cluster coordinator hostnames
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coordinators:
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- pvc-hv1
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- pvc-hv2
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- pvc-hv3
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# networks: Cluster-level network configuration
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# OPTIONAL if enable_networking: False
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networks:
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# upstream: Upstream routed network for in- and out-bound upstream networking
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upstream:
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# domain: Upstream domain name, may be None
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domain: "mydomain.net"
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# network: Upstream network block
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network: "1.1.1.0/24"
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# floating_ip: Upstream floating IP address for the primary coordinator
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floating_ip: "1.1.1.10/24"
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# gateway: Upstream static default gateway, if applicable
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gateway: "1.1.1.1"
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# cluster: Cluster internal network for node communication and client virtual networks
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cluster:
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# domain: Cluster internal domain name
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domain: "pvc.local"
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# network: Cluster internal network block
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network: "10.255.0.0/24"
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# floating_ip: Cluster internal floating IP address for the primary coordinator
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floating_ip: "10.255.0.254/24"
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# storage: Cluster internal network for storage traffic
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storage:
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# domain: Cluster storage domain name
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domain: "pvc.storage"
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# network: Cluster storage network block
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network: "10.254.0.0/24"
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# floating_ip: Cluster storage floating IP address for the primary coordinator
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floating_ip: "10.254.0.254/24"
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# coordinator: Coordinator-specific configuration
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# OPTIONAL if enable_networking: False
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coordinator:
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# dns: DNS aggregator subsystem
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dns:
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# database: Patroni PostgreSQL database configuration
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database:
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# host: PostgreSQL hostname, invariably 'localhost'
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host: localhost
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# port: PostgreSQL port, invariably 'localhost'
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port: 5432
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# name: PostgreSQL database name, invariably 'pvcdns'
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name: pvcdns
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# user: PostgreSQL username, invariable 'pvcdns'
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user: pvcdns
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# pass: PostgreSQL user password, randomly generated
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pass: pvcdns
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# system: Local PVC instance configuration
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system:
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# fencing: Node fencing configuration
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fencing:
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# intervals: Intervals for fencing determination
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intervals:
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# keepalive_interval: Number of seconds between keepalive/status updates
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keepalive_interval: 5
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# fence_intervals: Number of keepalive_intervals to declare a node dead and fence it
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fence_intervals: 6
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# suicide_intervals: Numer of keepalive_intervals before a node considers itself dead and self-fences, 0 to disable
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suicide_intervals: 0
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# actions: Actions to take after a fence trigger
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actions:
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# successful_fence: Action to take after successfully fencing a node, options: migrate, None
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successful_fence: migrate
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# failed_fence: Action to take after failing to fence a node, options: migrate, None
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failed_fence: None
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# ipmi: Local system IPMI options
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ipmi:
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# host: Hostname/IP of the local system's IPMI interface, must be reachable
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host: pvc-hv1-lom
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# user: Local system IPMI username
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user: admin
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# pass: Local system IPMI password
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pass: Passw0rd
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# migration: Migration option configuration
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migration:
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# target_selector: Criteria to select the ideal migration target, options: mem, load, vcpus, vms
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target_selector: mem
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# configuration: Local system configurations
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configuration:
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# directories: PVC system directories
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directories:
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# dynamic_directory: Temporary in-memory directory for active configurations
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dynamic_directory: "/run/pvc"
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# log_directory: Logging directory
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log_directory: "/var/log/pvc"
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# console_log_directory: Libvirt console logging directory
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console_log_directory: "/var/log/libvirt"
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# logging: PVC logging configuration
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logging:
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# file_logging: Enable or disable logging to files under log_directory
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file_logging: True
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# stdout_logging: Enable or disable logging to stdout (i.e. journald)
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stdout_logging: True
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# console_log_lines: Number of console log lines to store in Zookeeper per VM
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console_log_lines: 1000
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# networking: PVC networking configuration
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# OPTIONAL if enable_networking: False
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networking:
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# devices: Interface devices configuration
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devices:
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# upstream: Upstream physical interface device
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upstream: ens4
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# cluster: Cluster (VNIC) physical interface device
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cluster: ens4
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# storage: Storage (Ceph) physical interface device
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storage: ens4
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# addresses: Special network addresses; by-id denotes "address octet equals host number", e.g. .3 for host3
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addresses:
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# upstream: Network address for upstream network, options: None, by-id, <static>/<mask>
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upstream: None
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# cluster: Network address for cluster network, options: by-id, <static>/<mask>
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cluster: by-id
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# storage: Network address for storage network, options: by-id, <static>/<mask>
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storage: by-id
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