0x00 前言

吾使用 alpine 作為基礎鏡像構建了 jdk8 鏡像，為線上業(yè)務的 Java 微服務架構提供支持，但是有容器運行的 java 服務中打印的日志中一旦出現(xiàn)中文，就會出現(xiàn)諸如以下的 ???? 的亂碼：

以下是解決該問題的方法，轉載自 github 中這個 issues 中的解決方法。

0x01 解決

1、使用 alpine 構建鏡像時，在 dockerfile 修改其語言環(huán)境：

FROM alpine:3.6    # ---not shown here---   # Install language pack  RUN apk --no-cache add ca-certificates wget &&       wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub &&       wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-2.25-r0.apk &&       wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-bin-2.25-r0.apk &&       wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.25-r0/glibc-i18n-2.25-r0.apk &&       apk add glibc-bin-2.25-r0.apk glibc-i18n-2.25-r0.apk glibc-2.25-r0.apk    # Iterate through all locale and install it # Note that locale -a is not available in alpine linux, use `/usr/glibc-compat/bin/locale -a` instead  COPY ./locale.md /locale.md  RUN cat locale.md | xargs -i /usr/glibc-compat/bin/localedef -i {} -f UTF-8 {}.UTF-8    # Set the lang, you can also specify it as as environment variable through docker-compose.yml  ENV LANG=en_US.UTF-8       LANGUAGE=en_US.UTF-8    # --- not show here---

同級目錄下創(chuàng)建 locale.md 文件，將以下內容拷貝入 locale.md：

aa_DJ  aa_ER  aa_ET  af_ZA  am_ET  an_ES  ar_AE  ar_BH  ar_DZ  ar_EG  ar_IN  ar_IQ  ar_JO  ar_KW  ar_LB  ar_LY  ar_MA  ar_OM  ar_QA  ar_SA  ar_SD  ar_SY  ar_TN  ar_YE  as_IN  ast_ES  ayc_PE  az_AZ  be_BY  bem_ZM  ber_DZ  ber_MA  bg_BG  bho_IN  bn_BD  bn_IN  bo_CN  bo_IN  br_FR  brx_IN  bs_BA  byn_ER  ca_AD  ca_ES  ca_FR  ca_IT  crh_UA  csb_PL  cs_CZ  cv_RU  cy_GB  da_DK  de_AT  de_BE  de_CH  de_DE  de_LU  doi_IN  dv_MV  dz_BT  el_CY  el_GR  en_AG  en_AU  en_BW  en_CA  en_DK  en_GB  en_HK  en_IE  en_IN  en_NG  en_NZ  en_PH  en_SG  en_US  en_ZA  en_ZM  en_ZW  es_AR  es_BO  es_CL  es_CO  es_CR  es_CU  es_DO  es_EC  es_ES  es_GT  es_HN  es_MX  es_NI  es_PA  es_PE  es_PR  es_PY  es_SV  es_US  es_UY  es_VE  et_EE  eu_ES  fa_IR  ff_SN  fi_FI  fil_PH  fo_FO  fr_BE  fr_CA  fr_CH  fr_FR  fr_LU  fur_IT  fy_DE  fy_NL  ga_IE  gd_GB  gez_ER  gez_ET  gl_ES  gu_IN  gv_GB  ha_NG  he_IL  hi_IN  hne_IN  hr_HR  hsb_DE  ht_HT  hu_HU  hy_AM  ia_FR  id_ID  ig_NG  ik_CA  is_IS  it_CH  it_IT  iu_CA  ja_JP  ka_GE  kk_KZ  kl_GL  km_KH  kn_IN  kok_IN  ko_KR  ks_IN  ku_TR  kw_GB  ky_KG  lb_LU  lg_UG  li_BE  lij_IT  li_NL  lo_LA  lt_LT  lv_LV  mag_IN  mai_IN  mg_MG  mhr_RU  mi_NZ  mk_MK  ml_IN  mni_IN  mn_MN  mr_IN  ms_MY  mt_MT  my_MM  nb_NO  nds_DE  nds_NL  ne_NP  nhn_MX  niu_NU  niu_NZ  nl_AW  nl_BE  nl_NL  nn_NO  nr_ZA  nso_ZA  oc_FR  om_ET  om_KE  or_IN  os_RU  pa_IN  pa_PK  pl_PL  ps_AF  pt_BR  pt_PT  ro_RO  ru_RU  ru_UA  rw_RW  sa_IN  sat_IN  sc_IT  sd_IN  se_NO  shs_CA  sid_ET  si_LK  sk_SK  sl_SI  so_DJ  so_ET  so_KE  so_SO  sq_AL  sq_MK  sr_ME  sr_RS  ss_ZA  st_ZA  sv_FI  sv_SE  sw_KE  sw_TZ  szl_PL  ta_IN  ta_LK  te_IN  tg_TJ  th_TH  ti_ER  ti_ET  tig_ER  tk_TM  tl_PH  tn_ZA  tr_CY  tr_TR  ts_ZA  tt_RU  ug_CN  uk_UA  unm_US  ur_IN  ur_PK  uz_UZ  ve_ZA  vi_VN  wa_BE  wae_CH  wal_ET  wo_SN  xh_ZA  yi_US  yo_NG  yue_HK  zh_CN  zh_HK  zh_SG  zh_TW  zu_ZA

這樣構建出來的 alpine 鏡像就是 en_US.UTF-8 的編碼環(huán)境

2、構建鏡像

$ docker build -t utf8-alpine .  ……

3、運行構建的鏡像，查看編碼環(huán)境

$ docker run -itd utf8-alpine sh $ docker exec -it d830c8e49b1c sh  /opt # env  LANGUAGE=en_US.UTF-8  HOSTNAME=d830c8e49b1c  SHLVL=1  HOME=/root  TERM=xterm  PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/java/jdk/bin  LANG=en_US.UTF-8  PWD=/opt  JAVA_HOME=/usr/java/jdk  /opt # /usr/glibc-compat/bin/locale -a  ……  zh_CN.utf8  zh_HK.utf8  zh_SG.utf8  zh_TW.utf8  zu_ZA.utf8

修改完后 java 日志中的中文也已經(jīng)正常顯示：