[英]GCP Kubernetes doesn't find libgcc_s for a Elixir Dockerfile project
目前首次在 Google Cloud 和 Kube.netes 上發布 Elixir/Phoenix 應用程序,(我找到了一個教程,我按照教程 => 使用 Google Kube.netes 引擎在容器中運行 Elixir/Phoenix 應用程序),我'我被困在似乎是最后一步的地方:由於一些我還沒有找到修復的錯誤而部署到集群。
elixir 應用程序是一個包含兩個 phoenix 應用程序的傘形應用程序,每個都有一個端口(用於管理網站,另一個用於一般網站)和另外三個 elixir 應用程序。
有一個自定義的 docker 用於開發(使用 docker-compose),另一個Dockerfile 用於生產,這是下面的(分為兩部分,我猜第一部分用於圖像構建,第二部分用於 kube.netes) :
# prod.Dockerfile
FROM elixir:alpine
ARG app_name=prod
ARG phoenix_subdir=.
ARG build_env=prod
RUN apk add --no-cache make build-base openssl ncurses-libs libgcc libstdc++
ENV MIX_ENV=${build_env} TERM=xterm
WORKDIR /opt/app
RUN apk update \
&& apk --no-cache --update add nodejs npm \
&& mix local.rebar --force \
&& mix local.hex --force
COPY . .
RUN mix do deps.get, compile
RUN cd apps/admin/assets \
&& npm rebuild node-sass \
&& npm install \
&& ./node_modules/webpack/bin/webpack.js \
&& cd .. \
&& mix phx.digest
RUN cd apps/app/assets \
&& npm rebuild node-sass \
&& npm install \
&& ./node_modules/webpack/bin/webpack.js \
&& cd .. \
&& mix phx.digest
RUN mix release ${app_name} \
&& mv _build/${build_env}/rel/${app_name} /opt/release \
&& mv /opt/release/bin/${app_name} /opt/release/bin/start_server
FROM alpine:latest
RUN apk add make build-base --no-cache openssl ncurses-libs libgcc libstdc++
ARG hello
RUN apk update \
&& apk add --no-cache postgresql-client \
&& apk --no-cache --update add bash ca-certificates openssl-dev \
&& mkdir -p /usr/local/bin \
&& wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 \
-O /usr/local/bin/cloud_sql_proxy \
&& chmod +x /usr/local/bin/cloud_sql_proxy \
&& mkdir -p /tmp/cloudsql
ENV GCLOUD_PROJECT_ID=${project_id} \
REPLACE_OS_VARS=true
EXPOSE ${PORT}
EXPOSE 4011
WORKDIR /opt/app
COPY --from=0 /opt/release .
CMD (/usr/local/bin/cloud_sql_proxy \
-projects=${GCLOUD_PROJECT_ID} -dir=/tmp/cloudsql &); \
exec /opt/app/bin/start_server start
由cloudbuild.yaml
:
steps:
- name: "gcr.io/cloud-builders/docker"
args: ["build", "-t", "gcr.io/hello/prod:$_TAG",
"--build-arg", "project_id=hello", ".",
"--file=./prod.Dockerfile"]
images: ["gcr.io/hello/prod:$_TAG"]
(重新)構建圖像
$> gcloud builds submit --substitutions=_TAG=v1 .
然后創建部署
$> kubectl run hello-web --image=gcr.io/${PROJECT_ID}/hello:v1 --port 8080
pod/hello-web created
檢查部署是否順利(劇透:事實並非如此)
$> kubectl get pods
NAME READY STATUS RESTARTS AGE
hello-web 0/1 CrashLoopBackOff 1 15s
查看日志
$> kubectl logs {POD-NAME}
其中顯示以下錯誤:
2021/08/09 23:49:15 current FDs rlimit set to 1048576, wanted limit is 8500. Nothing to do here.
2021/08/09 23:49:15 gcloud is not in the path and -instances and -projects are empty
Error loading shared library libstdc++.so.6: No such file or directory (needed by /opt/app/erts-12.0.3/bin/beam.smp)
Error loading shared library libgcc_s.so.1: No such file or directory (needed by /opt/app/erts-12.0.3/bin/beam.smp)
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_begin_catch: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt24__throw_out_of_range_fmtPKcz: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _Znwm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt20__throw_length_errorPKc: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_guard_release: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZNKSt8__detail20_Prime_rehash_policy11_M_next_bktEm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __popcountdi2: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt29_Rb_tree_insert_and_rebalancebPSt18_Rb_tree_node_baseS0_RS_: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt17__throw_bad_allocv: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_appendEPKcm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_createERmm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt18_Rb_tree_incrementPKSt18_Rb_tree_node_base: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_end_catch: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_guard_acquire: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZNKSt8__detail20_Prime_rehash_policy14_M_need_rehashEmmm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt19__throw_logic_errorPKc: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZSt18_Rb_tree_decrementPSt18_Rb_tree_node_base: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7reserveEm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_rethrow: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _Unwind_Resume: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZdlPvm: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZTVN10__cxxabiv120__si_class_type_infoE: symbol not found
...
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZTVN10__cxxabiv120__si_class_type_infoE: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_pure_virtual: symbol not found
...
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __cxa_pure_virtual: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZTVN10__cxxabiv117__class_type_infoE: symbol not found
...
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZTVN10__cxxabiv117__class_type_infoE: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: _ZTVN10__cxxabiv121__vmi_class_type_infoE: symbol not found
Error relocating /opt/app/erts-12.0.3/bin/beam.smp: __gxx_personality_v0: symbol not found
雖然我幾乎一無所知,但我還是試着修改了一點Dockerfile,但沒有成功。 我也在谷歌上搜索 libgcc 錯誤,但沒有成功。
就是這樣,因為我沒有其他線索可以看。
那么,有什么建議可以讓它發揮作用嗎?
刪除 pod,然后獲取圖像的標簽並清理它
$> kubectl delete pod hello-web
$> gcloud container images list-tags gcr.io/hello/prod
$> gcloud container images delete gcr.io/hello/prod@sha256:...
結果:什么都沒有改變
看來您的問題已經在 Elixir 論壇上提出過:
看起來您的最終圖像中缺少運行時依賴項。 嘗試將 RUN apk add --no-cache openssl ncurses-libs 更改為 RUN apk add --no-cache openssl ncurses-libs libstdc++。
解決方法是將libstdc++
添加到您的安裝行。
論壇帖子中也概述了這樣做的原因:
Beam 具有本機運行時依賴項,並且 OTP 24 添加了 libc 作為運行時依賴項以支持 JIT。 有了這個改變,似乎 bare alpine:3.9 不再帶來所有必需的運行時依賴性。 您需要確保所有這些都存在於應用程序容器中。
祝你好運!
因此,經過數小時的測試和嘗試,我只是改變了策略並專注於圖像版本而不是 Dockerfile。
$> gcloud builds submit --substitutions=_TAG=v1.1 .
$> kubectl run hello-web --image=gcr.io/${PROJECT_ID}/hello:v1.1 --port 8080
我之前沒有更改它,因為我想在構建和應用程序之間保持相同的版本。
我更改的另一件事是cloudbuild.yaml
:我刪除了名稱前面的破折號。
這兩個操作使構建在 pod 中運行。
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