1---
2title: Build server infrastructure
3sidebar_title: Server infrastructure
4maxHeadingDepth: 4
5description: Learn about the current build server infrastructure when using EAS.
6---
7
8import { Collapsible } from '~/ui/components/Collapsible';
9
10> This document describes the current build infrastructure as of **June 27, 2022**. It is likely to change over time, and this document will be updated.
11
12## Worker IP addresses
13
14Here is the [up-to-date list of worker IP addresses](https://expo.dev/eas-build-worker-ips.txt).
15
16## Configuring build environment
17
18Images for each platform have one specific version of Node.js, yarn, CocoaPods, Xcode, Ruby, Fastlane, and so on. You can override some of the versions in [eas.json](/build/eas-json).
19If there is no dedicated configuration option you're looking for, you can use [npm hooks](npm-hooks) to install or update any system dependencies with `apt-get` or `brew`. Please take into account that those customizations are applied during the build and will increase your build times.
20
21When selecting an image for the build you can use the full name provided below or one of the aliases: `default`, `latest`.
22
23- The use of a specific name guarantees the consistent environment with only minor updates.
24- `default` alias will be assigned to the environment that most closely resembles the configuration used for Expo SDK development.
25- `latest` alias will be assigned to the image with the most up to date versions of the software.
26
27> **info** **Note:** If you do not provide `image` in **eas.json**, your build will use `default` image. However, in some cases, we select a more appropriate image based on the Expo SDK version or React Native version.
28> You can check what image is used for a build in the "Spin up build environment" build logs section.
29
30## Android build server configurations
31
32Android workers run on virtual machines in an isolated environment. Every build gets its own dedicated VM instance.
33
34- Build resources:
35  - [`medium`](eas-json/#resourceclass-1): 4 CPU, 16 GB RAM ([`n2-standard-4`](https://cloud.google.com/compute/docs/general-purpose-machines#n2_machines) Google Cloud machine type)
36  - [`large`](eas-json/#resourceclass-1): 8 CPU, 32 GB RAM ([`n2-standard-8`](https://cloud.google.com/compute/docs/general-purpose-machines#n2_machines) Google Cloud machine type)
37- [npm cache deployed with Kubernetes](caching/#javascript-dependencies)
38- [Maven cache deployed with Kubernetes](caching/#android-dependencies)
39- Global Gradle configuration in **~/.gradle/gradle.properties**:
40
41  ```ini ~/.gradle/gradle.properties
42  org.gradle.jvmargs=-Xmx14g -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
43  org.gradle.parallel=true
44  org.gradle.configureondemand=true
45  org.gradle.daemon=false
46  ```
47
48- Global npm configuration in **~/.npmrc**:
49
50  ```ini ~/.npmrc
51  registry=http://npm-cache-service.worker-infra-production.svc.cluster.local:4873
52  ```
53
54- Global Yarn configuration in **~/.yarnrc.yml**:
55
56  ```yml ~/.yarnrc.yml
57  unsafeHttpWhitelist:
58    - '*'
59  npmRegistryServer: 'http://npm-cache-service.worker-infra-production.svc.cluster.local:4873'
60  enableImmutableInstalls: false
61  ```
62
63### Android server images
64
65#### `ubuntu-22.04-jdk-11-ndk-r21e` (alias `latest`)
66
67<Collapsible summary="Details">
68
69- Docker image: `ubuntu:jammy-20220531`
70- NDK 21.4.7075529
71- Node.js 16.18.1
72- Yarn 1.22.17
73- pnpm 7.0.0
74- npm 8.19.2
75- Java 11
76
77</Collapsible>
78
79#### `ubuntu-22.04-jdk-8-ndk-r21e`
80
81<Collapsible summary="Details">
82
83- Docker image: `ubuntu:jammy-20220531`
84- NDK 21.4.7075529
85- Node.js 16.18.1
86- Yarn 1.22.17
87- pnpm 7.0.0
88- npm 8.19.2
89- Java 8
90
91</Collapsible>
92
93#### `ubuntu-20.04-jdk-11-ndk-r21e` (alias `default`)
94
95<Collapsible summary="Details">
96
97- Docker image: `ubuntu:focal-20210921`
98- NDK 21.4.7075529
99- Node.js 16.18.1
100- Yarn 1.22.17
101- pnpm 7.0.0
102- npm 8.19.2
103- Java 11
104
105</Collapsible>
106
107#### `ubuntu-20.04-jdk-8-ndk-r21e`
108
109<Collapsible summary="Details">
110
111- Docker image: `ubuntu:focal-20210921`
112- NDK 21.4.7075529
113- Node.js 16.18.1
114- Yarn 1.22.17
115- pnpm 7.0.0
116- npm 8.19.2
117- Java 8
118
119</Collapsible>
120
121#### `ubuntu-18.04-jdk-11-ndk-r19c`
122
123<Collapsible summary="Details">
124
125- Docker image: `ubuntu:bionic-20210930`
126- NDK 19.2.5345600
127- Node.js 16.18.1
128- Yarn 1.22.17
129- pnpm 7.0.0
130- npm 8.19.2
131- Java 11
132
133</Collapsible>
134
135#### `ubuntu-18.04-jdk-8-ndk-r19c`
136
137<Collapsible summary="Details">
138
139- Docker image: `ubuntu:bionic-20210930`
140- NDK 19.2.5345600
141- Node.js 16.18.1
142- Yarn 1.22.17
143- pnpm 7.0.0
144- npm 8.19.2
145- Java 8
146
147</Collapsible>
148
149## iOS build server configurations
150
151iOS worker VMs run on Mac Mini 8.1 hosts in an isolated environment. Every build gets its own fresh macOS VM:
152
153- Hardware:
154  - Intel: Intel(R) Core(TM) i7-8700B CPU (6 cores/12 threads), 64 GB RAM
155  - M1: 3.2GHz 8-Core M1 (4 performance and 4 efficiency cores), 16 GB RAM [2020]
156- Build resources:
157  - [`intel-medium`](eas-json/#resourceclass-2): 3 cores, 12 GB RAM, 2 builder VMs per host
158  - [`m1-medium`](eas-json/#resourceclass-2): 2 cores, 8 GB RAM, 2 builder VMs per host
159- [npm cache](caching/#javascript-dependencies)
160- [CocoaPods cache](caching/#ios-dependencies)
161- [`cocoapods-nexus-plugin`](https://github.com/expo/eas-build/tree/main/packages/cocoapods-nexus-plugin)
162- Global npm configuration in **~/.npmrc**:
163
164  ```ini ~/.npmrc
165  registry=http://10.254.24.9:4873
166  ```
167
168- Global Yarn configuration in **~/.yarnrc.yml**:
169
170  ```yml ~/.yarnrc.yml
171  unsafeHttpWhitelist:
172    - '*'
173  npmRegistryServer: 'registry=http://10.254.24.9:4873'
174  enableImmutableInstalls: false
175  ```
176
177### iOS server images
178
179#### `macos-monterey-12.6-xcode-14.2` (alias `latest`)
180
181<Collapsible summary="Details">
182
183- macOS Monterey 12.6
184- Xcode 14.2 (14C18)
185- Node.js 16.18.1
186- Yarn 1.22.17
187- pnpm 7.27.0
188- npm 8.19.2
189- fastlane 2.211.0
190- CocoaPods 1.11.3
191- Ruby 2.7
192
193</Collapsible>
194
195#### `macos-monterey-12.6-xcode-14.1` (alias `default`)
196
197<Collapsible summary="Details">
198
199- macOS Monterey 12.6
200- Xcode 14.1 (14B47b)
201- Node.js 16.18.1
202- Yarn 1.22.17
203- pnpm 7.15.0
204- npm 8.19.2
205- fastlane 2.210.1
206- CocoaPods 1.11.3
207- Ruby 2.7
208
209</Collapsible>
210
211#### `macos-monterey-12.6-xcode-14.0`
212
213<Collapsible summary="Details">
214
215- macOS Monterey 12.6
216- Xcode 14.0 (14A309)
217- Node.js 16.18.1
218- Yarn 1.22.17
219- pnpm 7.11.0
220- npm 8.19.2
221- fastlane 2.210.0
222- CocoaPods 1.11.3
223- Ruby 2.7
224
225</Collapsible>
226
227#### `macos-monterey-12.4-xcode-13.4`
228
229<Collapsible summary="Details">
230
231- macOS Monterey 12.4
232- Xcode 13.4 (13F17a)
233- Node.js 16.18.1
234- Yarn 1.22.17
235- pnpm 7.0.0
236- npm 8.19.2
237- fastlane 2.205.2
238- CocoaPods 1.11.3
239- Ruby 2.7
240
241</Collapsible>
242
243#### `macos-big-sur-11.4-xcode-13.0`
244
245<Collapsible summary="Details">
246
247- macOS Big Sur 11.4
248- Xcode 13.0 (13A233)
249- Node.js 16.18.1
250- Yarn 1.22.17
251- pnpm 7.0.0
252- npm 8.19.2
253- fastlane 2.185.1
254- CocoaPods 1.10.1
255- Ruby 2.7
256
257</Collapsible>
258
259#### `macos-monterey-12.3-xcode-13.3` (deprecated)
260
261<Collapsible summary="Details">
262
263- macOS Monterey 12.3.1
264- Xcode 13.3.1 (13E500a)
265- Node.js 16.18.1
266- Yarn 1.22.17
267- pnpm 7.0.0
268- npm 8.19.2
269- fastlane 2.205.2
270- CocoaPods 1.11.3
271- Ruby 2.7
272
273</Collapsible>
274
275#### `macos-monterey-12.1-xcode-13.2` (deprecated)
276
277<Collapsible summary="Details">
278
279- macOS Monterey 12.1
280- Xcode 13.2.1 (13C100)
281- Node.js 16.18.1
282- Yarn 1.22.17
283- pnpm 7.0.0
284- npm 8.19.2
285- fastlane 2.201.0
286- CocoaPods 1.11.2
287- Ruby 2.7
288
289</Collapsible>
290
291#### `macos-big-sur-11.4-xcode-12.5` (deprecated, not available for M1 workers)
292
293<Collapsible summary="Details">
294
295- macOS Big Sur 11.4
296- Xcode 12.5 (12E5244e)
297- Node.js 16.18.1
298- Yarn 1.22.17
299- pnpm 7.0.0
300- npm 8.19.2
301- fastlane 2.185.1
302- CocoaPods 1.10.1
303- Ruby 2.7
304
305</Collapsible>
306