Create a Kibana container image for ARM64 (Raspberry Pi/Mac M1)
Introduction
I don't have an ARM64 container image for Kibana, so I made it myself, but I'm happy to say that a tarball version of ARM64 has been provided, so I'll use it to create a container image.
environment
-
Raspberry Pi 4B (RAM 4GB)
-
RaspiOS 64bit (Buster) --podman (docker is also acceptable)
-
Mac mini 2020 Apple M1 (RAM 16GB)
-
macOS Big Sur 11.1
-
Docker 2.10.1 AppleSilicon Preview7
procedure
Since the elastic docker file is published on github, I will clone it.
python
# git clone --depth=1 -b 7.10 https://github.com/elastic/dockerfiles
Cloning into 'dockerfiles'...
remote: Enumerating objects: 30, done.
remote: Counting objects: 100% (30/30), done.
remote: Compressing objects: 100% (23/23), done.
remote: Total 30 (delta 0), reused 17 (delta 0), pack-reused 0
Unpacking objects: 100% (30/30), done.
Edit the Dockerfile for ARM64.
python
# cd dockerfiles/kibana/
~/dockerfiles/kibana# cp Dockerfile Dockerfile.org
~/dockerfiles/kibana# vi Dockerfile
~/dockerfiles/kibana# diff Dockerfile Dockerfile.org
16c16
< curl --retry 8 -s -L -O https://artifacts.elastic.co/downloads/kibana/kibana-7.10.1-linux-aarch64.tar.gz && \
---
> curl --retry 8 -s -L -O https://artifacts.elastic.co/downloads/kibana/kibana-7.10.1-linux-x86_64.tar.gz && \
22c22
< RUN tar --strip-components=1 -zxf /opt/kibana-7.10.1-linux-aarch64.tar.gz
---
> RUN tar --strip-components=1 -zxf /opt/kibana-7.10.1-linux-x86_64.tar.gz
43c43
< fontconfig freetype shadow-utils nss && \
---
> fontconfig freetype shadow-utils libnss3.so && \
50,51c50,51
< RUN curl -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_aarch64
< RUN echo "45b1bbf56cc03edda81e4220535a025bfe3ed6e93562222b9be4471005b3eeb3 /usr/local/bin/dumb-init" | sha256sum -c -
---
> RUN curl -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_amd64
> RUN echo "37f2c1f0372a45554f1b89924fbb134fc24c3756efaedf11e07f599494e0eff9 /usr/local/bin/dumb-init" | sha256sum -c -
Then build. It takes a lot of time because I chmod a lot of files. Also, the times are podman. (It can be docker)
python
~/dockerfiles/kibana# podman build -t kibana:7.10.1 .
STEP 1: FROM centos:8 AS builder
STEP 2: RUN cd /opt && curl --retry 8 -s -L -O https://artifacts.elastic.co/downloads/kibana/kibana-7.10.1-linux-aarch64.tar.gz && cd -
/
--> 19830fe514e
STEP 3: RUN mkdir /usr/share/kibana
--> 0a09e9dffcc
STEP 4: WORKDIR /usr/share/kibana
--> 4ef0fa15c55
STEP 5: RUN tar --strip-components=1 -zxf /opt/kibana-7.10.1-linux-aarch64.tar.gz
--> c25c4684458
STEP 6: RUN chmod -R g=u /usr/share/kibana
--> 1dd443d53d0
STEP 7: RUN find /usr/share/kibana -type d -exec chmod g+s {} \;
--> 3ff7718b298
STEP 8: FROM centos:8
STEP 9: EXPOSE 5601
--> 14b28faf60f
STEP 10: RUN for iter in {1..10}; do yum update --setopt=tsflags=nodocs -y && yum install --setopt=tsflags=nodocs -y fontconfig freetype shadow-utils nss && yum clean all && exit_code=0 && break || exit_code=$? && echo "yum error: retry $iter in 10s" && sleep 10; done; (exit $exit_code)
CentOS Linux 8 - AppStream 4.7 MB/s | 5.3 MB 00:01
CentOS Linux 8 - BaseOS 2.2 MB/s | 1.9 MB 00:00
CentOS Linux 8 - Extras 3.3 kB/s | 8.6 kB 00:02
Last metadata expiration check: 0:00:01 ago on Tue Jan 5 01:43:32 2021.
Dependencies resolved.
Nothing to do.
Complete!
Last metadata expiration check: 0:00:03 ago on Tue Jan 5 01:43:32 2021.
Package shadow-utils-2:4.6-11.el8.aarch64 is already installed.
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
fontconfig aarch64 2.13.1-3.el8 baseos 273 k
freetype aarch64 2.9.1-4.el8_3.1 baseos 370 k
nss aarch64 3.53.1-11.el8_2 appstream 682 k
Installing dependencies:
crypto-policies-scripts noarch 20200713-1.git51d1222.el8 baseos 67 k
dejavu-fonts-common noarch 2.35-6.el8 baseos 74 k
dejavu-sans-fonts noarch 2.35-6.el8 baseos 1.5 M
file aarch64 5.33-16.el8 baseos 77 k
fontpackages-filesystem noarch 1.44-22.el8 baseos 16 k
gettext aarch64 0.19.8.1-17.el8 baseos 1.1 M
gettext-libs aarch64 0.19.8.1-17.el8 baseos 296 k
grub2-common noarch 1:2.02-90.el8 baseos 884 k
grub2-tools aarch64 1:2.02-90.el8 baseos 1.8 M
grub2-tools-minimal aarch64 1:2.02-90.el8 baseos 194 k
libcroco aarch64 0.6.12-4.el8_2.1 baseos 108 k
libgomp aarch64 8.3.1-5.1.el8 baseos 196 k
libpng aarch64 2:1.6.34-5.el8 baseos 119 k
nspr aarch64 4.25.0-2.el8_2 appstream 135 k
nss-softokn aarch64 3.53.1-11.el8_2 appstream 466 k
nss-softokn-freebl aarch64 3.53.1-11.el8_2 appstream 263 k
nss-sysinit aarch64 3.53.1-11.el8_2 appstream 71 k
nss-util aarch64 3.53.1-11.el8_2 appstream 131 k
os-prober aarch64 1.74-6.el8 baseos 55 k
which aarch64 2.21-12.el8 baseos 48 k
Installing weak dependencies:
grubby aarch64 8.40-41.el8 baseos 49 k
Transaction Summary
================================================================================
Install 24 Packages
Total download size: 8.8 M
Installed size: 36 M
Downloading Packages:
(1/24): nspr-4.25.0-2.el8_2.aarch64.rpm 1.4 MB/s | 135 kB 00:00
(2/24): nss-softokn-freebl-3.53.1-11.el8_2.aarc 3.6 MB/s | 263 kB 00:00
(3/24): nss-3.53.1-11.el8_2.aarch64.rpm 3.5 MB/s | 682 kB 00:00
(4/24): nss-sysinit-3.53.1-11.el8_2.aarch64.rpm 2.7 MB/s | 71 kB 00:00
(5/24): nss-util-3.53.1-11.el8_2.aarch64.rpm 4.9 MB/s | 131 kB 00:00
(6/24): nss-softokn-3.53.1-11.el8_2.aarch64.rpm 2.0 MB/s | 466 kB 00:00
(7/24): crypto-policies-scripts-20200713-1.git5 1.2 MB/s | 67 kB 00:00
(8/24): dejavu-fonts-common-2.35-6.el8.noarch.r 1.5 MB/s | 74 kB 00:00
(9/24): file-5.33-16.el8.aarch64.rpm 2.2 MB/s | 77 kB 00:00
(10/24): fontpackages-filesystem-1.44-22.el8.no 939 kB/s | 16 kB 00:00
(11/24): fontconfig-2.13.1-3.el8.aarch64.rpm 2.9 MB/s | 273 kB 00:00
(12/24): freetype-2.9.1-4.el8_3.1.aarch64.rpm 3.0 MB/s | 370 kB 00:00
(13/24): gettext-libs-0.19.8.1-17.el8.aarch64.r 2.8 MB/s | 296 kB 00:00
(14/24): dejavu-sans-fonts-2.35-6.el8.noarch.rp 4.4 MB/s | 1.5 MB 00:00
(15/24): gettext-0.19.8.1-17.el8.aarch64.rpm 3.7 MB/s | 1.1 MB 00:00
(16/24): grub2-tools-minimal-2.02-90.el8.aarch6 2.3 MB/s | 194 kB 00:00
(17/24): grub2-common-2.02-90.el8.noarch.rpm 4.2 MB/s | 884 kB 00:00
(18/24): grubby-8.40-41.el8.aarch64.rpm 1.1 MB/s | 49 kB 00:00
(19/24): libcroco-0.6.12-4.el8_2.1.aarch64.rpm 2.0 MB/s | 108 kB 00:00
(20/24): libpng-1.6.34-5.el8.aarch64.rpm 2.4 MB/s | 119 kB 00:00
(21/24): libgomp-8.3.1-5.1.el8.aarch64.rpm 2.5 MB/s | 196 kB 00:00
(22/24): os-prober-1.74-6.el8.aarch64.rpm 1.9 MB/s | 55 kB 00:00
(23/24): which-2.21-12.el8.aarch64.rpm 1.3 MB/s | 48 kB 00:00
(24/24): grub2-tools-2.02-90.el8.aarch64.rpm 5.2 MB/s | 1.8 MB 00:00
--------------------------------------------------------------------------------
Total 4.1 MB/s | 8.8 MB 00:02
warning: /var/cache/dnf/appstream-37e43cd1a3e4f490/packages/nspr-4.25.0-2.el8_2.aarch64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY
CentOS Linux 8 - AppStream 1.2 MB/s | 1.6 kB 00:00
Importing GPG key 0x8483C65D:
Userid : "CentOS (CentOS Official Signing Key) <[email protected]>"
Fingerprint: 99DB 70FA E1D7 CE22 7FB6 4882 05B5 55B3 8483 C65D
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : nspr-4.25.0-2.el8_2.aarch64 1/24
Running scriptlet: nspr-4.25.0-2.el8_2.aarch64 1/24
Installing : nss-util-3.53.1-11.el8_2.aarch64 2/24
Installing : libgomp-8.3.1-5.1.el8.aarch64 3/24
Running scriptlet: libgomp-8.3.1-5.1.el8.aarch64 3/24
Installing : libcroco-0.6.12-4.el8_2.1.aarch64 4/24
Running scriptlet: libcroco-0.6.12-4.el8_2.1.aarch64 4/24
Installing : grub2-common-1:2.02-90.el8.noarch 5/24
Installing : fontpackages-filesystem-1.44-22.el8.noarch 6/24
Installing : dejavu-fonts-common-2.35-6.el8.noarch 7/24
Installing : dejavu-sans-fonts-2.35-6.el8.noarch 8/24
Installing : gettext-libs-0.19.8.1-17.el8.aarch64 9/24
Installing : gettext-0.19.8.1-17.el8.aarch64 10/24
Running scriptlet: gettext-0.19.8.1-17.el8.aarch64 10/24
install-info: No such file or directory for /usr/share/info/gettext.info.gz
Installing : grub2-tools-minimal-1:2.02-90.el8.aarch64 11/24
Installing : nss-softokn-freebl-3.53.1-11.el8_2.aarch64 12/24
Installing : nss-softokn-3.53.1-11.el8_2.aarch64 13/24
Installing : which-2.21-12.el8.aarch64 14/24
Installing : os-prober-1.74-6.el8.aarch64 15/24
Installing : libpng-2:1.6.34-5.el8.aarch64 16/24
Installing : freetype-2.9.1-4.el8_3.1.aarch64 17/24
Installing : file-5.33-16.el8.aarch64 18/24
Running scriptlet: grub2-tools-1:2.02-90.el8.aarch64 19/24
Installing : grub2-tools-1:2.02-90.el8.aarch64 19/24
Running scriptlet: grub2-tools-1:2.02-90.el8.aarch64 19/24
install-info: No such file or directory for /usr/share/info/grub2.info.gz
install-info: No such file or directory for /usr/share/info/grub2-dev.info.gz
Installing : grubby-8.40-41.el8.aarch64 20/24
Installing : crypto-policies-scripts-20200713-1.git51d1222.el8. 21/24
Installing : nss-3.53.1-11.el8_2.aarch64 22/24
Installing : nss-sysinit-3.53.1-11.el8_2.aarch64 23/24
Installing : fontconfig-2.13.1-3.el8.aarch64 24/24
Running scriptlet: fontconfig-2.13.1-3.el8.aarch64 24/24
Running scriptlet: crypto-policies-scripts-20200713-1.git51d1222.el8. 24/24
Running scriptlet: nss-3.53.1-11.el8_2.aarch64 24/24
Running scriptlet: fontconfig-2.13.1-3.el8.aarch64 24/24
Verifying : nspr-4.25.0-2.el8_2.aarch64 1/24
Verifying : nss-3.53.1-11.el8_2.aarch64 2/24
Verifying : nss-softokn-3.53.1-11.el8_2.aarch64 3/24
Verifying : nss-softokn-freebl-3.53.1-11.el8_2.aarch64 4/24
Verifying : nss-sysinit-3.53.1-11.el8_2.aarch64 5/24
Verifying : nss-util-3.53.1-11.el8_2.aarch64 6/24
Verifying : crypto-policies-scripts-20200713-1.git51d1222.el8. 7/24
Verifying : dejavu-fonts-common-2.35-6.el8.noarch 8/24
Verifying : dejavu-sans-fonts-2.35-6.el8.noarch 9/24
Verifying : file-5.33-16.el8.aarch64 10/24
Verifying : fontconfig-2.13.1-3.el8.aarch64 11/24
Verifying : fontpackages-filesystem-1.44-22.el8.noarch 12/24
Verifying : freetype-2.9.1-4.el8_3.1.aarch64 13/24
Verifying : gettext-0.19.8.1-17.el8.aarch64 14/24
Verifying : gettext-libs-0.19.8.1-17.el8.aarch64 15/24
Verifying : grub2-common-1:2.02-90.el8.noarch 16/24
Verifying : grub2-tools-1:2.02-90.el8.aarch64 17/24
Verifying : grub2-tools-minimal-1:2.02-90.el8.aarch64 18/24
Verifying : grubby-8.40-41.el8.aarch64 19/24
Verifying : libcroco-0.6.12-4.el8_2.1.aarch64 20/24
Verifying : libgomp-8.3.1-5.1.el8.aarch64 21/24
Verifying : libpng-2:1.6.34-5.el8.aarch64 22/24
Verifying : os-prober-1.74-6.el8.aarch64 23/24
Verifying : which-2.21-12.el8.aarch64 24/24
Installed:
crypto-policies-scripts-20200713-1.git51d1222.el8.noarch
dejavu-fonts-common-2.35-6.el8.noarch
dejavu-sans-fonts-2.35-6.el8.noarch
file-5.33-16.el8.aarch64
fontconfig-2.13.1-3.el8.aarch64
fontpackages-filesystem-1.44-22.el8.noarch
freetype-2.9.1-4.el8_3.1.aarch64
gettext-0.19.8.1-17.el8.aarch64
gettext-libs-0.19.8.1-17.el8.aarch64
grub2-common-1:2.02-90.el8.noarch
grub2-tools-1:2.02-90.el8.aarch64
grub2-tools-minimal-1:2.02-90.el8.aarch64
grubby-8.40-41.el8.aarch64
libcroco-0.6.12-4.el8_2.1.aarch64
libgomp-8.3.1-5.1.el8.aarch64
libpng-2:1.6.34-5.el8.aarch64
nspr-4.25.0-2.el8_2.aarch64
nss-3.53.1-11.el8_2.aarch64
nss-softokn-3.53.1-11.el8_2.aarch64
nss-softokn-freebl-3.53.1-11.el8_2.aarch64
nss-sysinit-3.53.1-11.el8_2.aarch64
nss-util-3.53.1-11.el8_2.aarch64
os-prober-1.74-6.el8.aarch64
which-2.21-12.el8.aarch64
Complete!
21 files removed
--> f21d1615b18
STEP 11: RUN curl -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_aarch64
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 647 100 647 0 0 1937 0 --:--:-- --:--:-- --:--:-- 1937
100 71256 100 71256 0 0 48838 0 0:00:01 0:00:01 --:--:-- 95645
--> 723e82b056a
STEP 12: RUN echo "45b1bbf56cc03edda81e4220535a025bfe3ed6e93562222b9be4471005b3eeb3 /usr/local/bin/dumb-init" | sha256sum -c -
/usr/local/bin/dumb-init: OK
--> 3febee5eb18
STEP 13: RUN chmod +x /usr/local/bin/dumb-init
--> bc0487b93b5
STEP 14: RUN mkdir /usr/share/fonts/local
--> 4ec111a772d
STEP 15: RUN curl -L -o /usr/share/fonts/local/NotoSansCJK-Regular.ttc https://github.com/googlefonts/noto-cjk/raw/NotoSansV2.001/NotoSansCJK-Regular.ttc
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 159 100 159 0 0 460 0 --:--:-- --:--:-- --:--:-- 459
100 19.3M 100 19.3M 0 0 5909k 0 0:00:03 0:00:03 --:--:-- 10.8M
--> a4ef4dfcb8a
STEP 16: RUN echo "5dcd1c336cc9344cb77c03a0cd8982ca8a7dc97d620fd6c9c434e02dcb1ceeb3 /usr/share/fonts/local/NotoSansCJK-Regular.ttc" | sha256sum -c -
/usr/share/fonts/local/NotoSansCJK-Regular.ttc: OK
--> 4b91efb6b5d
STEP 17: RUN fc-cache -v
/usr/share/fonts: skipping, existing cache is valid: 0 fonts, 2 dirs
/usr/share/fonts/dejavu: skipping, existing cache is valid: 9 fonts, 0 dirs
/usr/share/fonts/local: skipping, existing cache is valid: 10 fonts, 0 dirs
/usr/share/X11/fonts/Type1: skipping, no such directory
/usr/share/X11/fonts/TTF: skipping, no such directory
/usr/local/share/fonts: skipping, no such directory
/root/.local/share/fonts: skipping, no such directory
/root/.fonts: skipping, no such directory
/usr/share/fonts/dejavu: skipping, looped directory detected
/usr/share/fonts/local: skipping, looped directory detected
/usr/lib/fontconfig/cache: cleaning cache directory
/root/.cache/fontconfig: not cleaning non-existent cache directory
/root/.fontconfig: not cleaning non-existent cache directory
/usr/bin/fc-cache-64: succeeded
--> e799200b93c
STEP 18: COPY --from=builder --chown=1000:0 /usr/share/kibana /usr/share/kibana
--> 95d34b78229
STEP 19: WORKDIR /usr/share/kibana
--> af91a2e64e0
STEP 20: RUN ln -s /usr/share/kibana /opt/kibana
--> ff975005e0f
STEP 21: ENV ELASTIC_CONTAINER true
--> 913ef578b8c
STEP 22: ENV PATH=/usr/share/kibana/bin:$PATH
--> 10f708b5548
STEP 23: COPY --chown=1000:0 config/kibana.yml /usr/share/kibana/config/kibana.yml
--> 3f9ddd395b3
STEP 24: COPY --chown=1000:0 bin/kibana-docker /usr/local/bin/
--> d9a73a2b085
STEP 25: RUN chmod g+ws /usr/share/kibana && find /usr/share/kibana -gid 0 -and -not -perm /g+w -exec chmod g+w {} \;
--> d31ea9b1844
STEP 26: RUN find / -xdev -perm -4000 -exec chmod u-s {} +
--> a8808cae581
STEP 27: RUN groupadd --gid 1000 kibana && useradd --uid 1000 --gid 1000 --home-dir /usr/share/kibana --no-create-home kibana
--> f2bc3dd0ed3
STEP 28: LABEL org.label-schema.build-date="2020-12-05T02:04:38.350Z" org.label-schema.license="Elastic License" org.label-schema.name="Kibana" org.label-schema.schema-version="1.0" org.label-schema.url="https://www.elastic.co/products/kibana" org.label-schema.usage="https://www.elastic.co/guide/en/kibana/reference/index.html" org.label-schema.vcs-ref="608c5e5dd32659e8afadd520d0cdc58766ba505b" org.label-schema.vcs-url="https://github.com/elastic/kibana" org.label-schema.vendor="Elastic" org.label-schema.version="7.10.1" org.opencontainers.image.created="2020-12-05T02:04:38.350Z" org.opencontainers.image.documentation="https://www.elastic.co/guide/en/kibana/reference/index.html" org.opencontainers.image.licenses="Elastic License" org.opencontainers.image.revision="608c5e5dd32659e8afadd520d0cdc58766ba505b" org.opencontainers.image.source="https://github.com/elastic/kibana" org.opencontainers.image.title="Kibana" org.opencontainers.image.url="https://www.elastic.co/products/kibana" org.opencontainers.image.vendor="Elastic" org.opencontainers.image.version="7.10.1"
--> 1ce105128f5
STEP 29: USER kibana
--> c59ed1347f4
STEP 30: ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
--> 954ff1f374b
STEP 31: CMD ["/usr/local/bin/kibana-docker"]
STEP 32: COMMIT kibana:7.10.1
--> 434eac9bb86
434eac9bb866c223f31e7ba8e0ac715249ac18746a09cc6be727381ed04806fe
It's done.
python
~/dockerfiles/kibana# podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/kibana 7.10.1 434eac9bb866 9 minutes ago 1.12 GB
We have confirmed that it can be built with the same Dockerfile on a Mac with M1. It takes more than 30 minutes, probably because it is the Preview version. (Double the Raspberry Pi ...)
How to use
Please refer to the official manual. https://www.elastic.co/guide/en/kibana/current/docker.html
I think you can set most of them with environment variables. For the environment variable name, change the variable name (variable name defined in the kibana configuration file) written in "kibana_vars" in bin/kibana-docker to all capital and change "." To "_". It seems that.
python
~/dockerfiles/kibana# cat bin/kibana-docker
:
kibana_vars=(
console.enabled
console.proxyConfig
console.proxyFilter
ops.cGroupOverrides.cpuPath
ops.cGroupOverrides.cpuAcctPath
cpu.cgroup.path.override
cpuacct.cgroup.path.override
csp.rules
csp.strict
csp.warnLegacyBrowsers
elasticsearch.customHeaders
elasticsearch.hosts
elasticsearch.logQueries
elasticsearch.password
elasticsearch.pingTimeout
elasticsearch.requestHeadersWhitelist
elasticsearch.requestTimeout
:
As an example of my environment, kubernetes deploys with yaml like below. For the time being, "NODE_OPTIONS" is also set.
python
# cat kibana.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: kibana
namespace: elastic
labels:
app: kibana
spec:
replicas: 1
selector:
matchLabels:
app: kibana
template:
metadata:
labels:
app: kibana
spec:
containers:
- name: kibana
image: localhost/kibana:7.10.1
resources:
requests:
cpu: 1
memory: 1Gi
limits:
cpu: 1
memory: 1.5Gi
env:
- name: SERVER_HOST
value: "0.0.0.0"
- name: I18N_LOCALE
value: "ja-JP"
- name: ELASTICSEARCH_URL
value: "http://elasticsearch:9200"
- name: ELASTICSEARCH_USERNAME
value: "kibana"
- name: ELASTICSEARCH_PASSWORD
value: "password"
- name: NODE_OPTIONS
value: "--max-old-space-size=1024"
ports:
- name: kibana
containerPort: 5601
I think that the free memory of the OS is the value of "limits.memory", the "Heap size Limit" of the "Memory Size (GB)" graph is also "1.0GB", and "NODE_OPTIONS" is effective.
It can be run on M1 Mac without any problems in combination with ARM64 version of elasticsearch.
in conclusion
I hope there will be more ARM64 container images.
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