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Upgrading docs: Add Boost dependencies

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Michael Friedrich 2019-04-01 16:51:50 +02:00
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@ -9,6 +9,31 @@ follow the instructions for v2.7 too.
## Upgrading to v2.11 <a id="upgrading-to-2-11"></a>
### Package Dependencies <a id="upgrading-to-2-11-package-dependencies"></a>
#### Added: Boost 1.66+
The rewrite of our core network stack for cluster and REST API
requires newer Boost versions, specifically >= 1.66. For technical
details, please continue reading in [this issue](https://github.com/Icinga/icinga2/issues/7041).
The package dependencies have been updated for RPM/DEB already.
On platforms where EPEL or Backports cannot satisfy this dependency,
we provide Boost as package on our [package repository](https://packages.icinga.com).
After upgrade, you may remove the old Boost packages (1.53 or anything above)
if you don't need them anymore.
#### Removed: YAJL
Our JSON library, namely [YAJL](https://github.com/lloyd/yajl), isn't maintained anymore
and may cause [crashes](https://github.com/Icinga/icinga2/issues/6684).
It is replaced by [JSON for Modern C++](https://github.com/nlohmann/json) by Niels Lohmann
and compiled into the binary as header only include. It helps our way to C++11 and allows
to fix additional UTF8 issues more easily. Read more about its [design goals](https://github.com/nlohmann/json#design-goals)
and [benchmarks](https://github.com/miloyip/nativejson-benchmark#parsing-time).
### HA-aware Features <a id="upgrading-to-2-11-ha-aware-features"></a>
v2.11 introduces additional HA functionality similar to the DB IDO feature.
@ -42,18 +67,6 @@ The [IdoMysqlConnection](09-object-types.md#objecttype-idomysqlconnection) and [
objects provide a new attribute named `last_failover` which shows the last failover timestamp.
This value also is available in the [ido](10-icinga-template-library.md#itl-icinga-ido) CheckCommand output.
### Package Dependencies <a id="upgrading-to-2-11-package-dependencies"></a>
#### Removed: YAJL
Our JSON library, namely [YAJL](https://github.com/lloyd/yajl), isn't maintained anymore
and may cause [crashes](https://github.com/Icinga/icinga2/issues/6684).
It is replaced by [JSON for Modern C++](https://github.com/nlohmann/json) by Niels Lohmann
and compiled into the binary as header only include. It helps our way to C++11 and allows
to fix additional UTF8 issues more easily. Read more about its [design goals](https://github.com/nlohmann/json#design-goals)
and [benchmarks](https://github.com/miloyip/nativejson-benchmark#parsing-time).
## Upgrading to v2.10 <a id="upgrading-to-2-10"></a>
### Path Constant Changes <a id="upgrading-to-2-10-path-constant-changes"></a>