v4.0.0 - 2021-02-01

Update the module to Terraform 0.13 compatibility.
See Upgrade Notes for TF 0.13 instructions.

v3.5.0 - 2021-02-01

Last version compatible with Terraform 0.12
Update Project Factory and Network modules for Terraform 0.13 upgrade.
See Upgrade Notes for TF 0.13 instructions.

v3.4.1 - 2021-01-14

Set instance group size to 0 when num_instances=0 (#43)

v3.4.0 - 2021-01-13

Add startup_script input variable to specify a bash startup-script to execute after routing is initialized. (#40)

v3.3.0 - 2020-12-28

(#7) Monitor the health of IP forwarding. See PR 37 for the conditions when auto-healing is triggered in response to kernel routing table changes.

v3.2.1 - 2020-12-23

(#28) Fix Error: Invalid prefix for given prefix length

v3.2.0 - 2020-12-23

(#32) Modify update policy to match GKE defaults. (maxSurge=1 maxUnavailable=0)
(#35) Remove nic0_cidrs, NIC0_CIDRS, nic1_cidrs, NIC1_CIDRS from 50_compute, they are not used inside the instance by policy based routing.

v3.1.1 - 2020-12-23

Fix issue/27 target_size should not be set with an auto scaler.

v3.1.0 - 2020-10-02

Pin the os image to a specific version to ensure consistent behavior when scaling in, scaling out, auto-healing, and across multiple terraform apply runs.
Replaced the os_image input var with image_project, image_family, and image_name.

v3.0.0 - 2020-09-30

Add support and documentation for zero-downtime upgrades. See issue/23.
Follow the process described in UPGRADE.md when upgrading to this major version.

v2.1.1 - 2021-01-14

Set instance group size to 0 when num_instances=0 (#43)

v2.1.0 - 2021-01-13

Add startup_script input variable to specify a bash startup-script to execute after routing is initialized. (#40)

v2.0.1 - 2020-12-23

Fix issue/27 target_size should not be set with an auto scaler.

v2.0.0 - 2020-09-29

Fix issue/20 modules/52_regional_multinic now deploys instance groups to all available zones in the specified region. Fixes error deploying to us-east1 and europe-west1 where there is no a zone.
Note, resources will be destroyed and re-created. The inputs to 52_regional_multinic have not changed relative to v1.4.0. The zone input to 50_compute is replaced by zones.

v1.4.0 - 2020-09-28

Multiple region support. See [examples/multiregion/][multiregion].

v1.3.0 - 2020-09-28

Add autoscale input var, default true, to enable auto scaling based on CPU utilization.
Changed default instance type to n1-highcpu-2 to gain 10Gbps send rate.
Added analysis doc of autoscaler behavior at AUTOSCALER.md.

v1.2.0 - 2020-09-16

Remove the use if iptables fwmark matches.
Use ip route replace instead of ip route add to prevent routes from piling up.
Specify ip rule priorities for clarity.
systemctl stop policy-routing removes rules, effectively turning off policy routing.

v1.1.0 - 2020-09-16

Workaround systemctl restart google-guest-agent breaking policy based routing. Resolves #10. See also guest-agent issue #76.
Send info(), debug() and error() logs to Stackdriver. Use filter logName="projects/[PROJECT_ID]/logs/multinic" to find them.
Add num_instances_b input to control how many instances in each zone.
Add preemptible input var, defaults to false

v1.0.0

Switch routing mode from ECMP to ILB as Next Hop.
Update to centos8.
Virtual wire behavior, traffic ingress to eth0 egresses eth1 and vice-versa.
Addition of hc-traffic.service unit file for LB health checks.
Addition of hc-health.service unit file for MIG auto-healing checks.
Added basic Cloud Logging integration example.

v0.5.1

Document ECMP behavior
Document recovery time results
Create highcpu endpoint instances
Add troubleshooting document

v0.5.0

Merge branch 'improve_recovery_time'
Use a dhcp exit hook to restore rt1
Enable running script directly for rapid R&D
Delete stale route resources

v0.4.3

Initial release