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ÈçºÎ»ùÓÚ Kubernetes ¹¹½¨ÍêÕûµÄ DevOps Á÷Ë®Ïß
 
  5256  次浏览      20
 2019-6-18
 
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1.ʲôÊÇ Kubernetes£¿ÎªÊ²Ã´ Kubernetes ±È½ÏÊʺÏÓÃÀ´¹¹½¨ DevOps µÄÁ÷Ë®Ïߣ¿

2.ÈçºÎ»ùÓÚ Kubernetes À´¹¹½¨ DevOps Á÷Ë®Ïߣ¿

3.ÈçºÎÔÚ Azure ÉÏÃæÀûÓà AKS È¥¹¹½¨ DevOps Á÷Ë®Ïߣ¿

4.DevOps Öг£¼ûµÄһЩÌôÕ½¡£

1. ʲôÊÇ Kubernetes£¿ÎªÊ²Ã´ Kubernetes ±È½ÏÊʺÏÓÃÀ´¹¹½¨ DevOps µÄÁ÷Ë®Ïߣ¿

Kubernetes ÊÇÄ¿Ç°×îΪ¹ã·ºÇÒÁ÷ÐеÄÈÝÆ÷±àÅŵ÷¶Èϵͳ£¬ËüÒ²ÊÇÏÖÔÚÓÃÀ´¹¹½¨ÔÆÔ­ÉúÓ¦ÓñàÅŵÄ×î¼Ñƽ̨¡£Ä¿Ç°ËùÓÐÔÆÔ­ÉúÓ¦Óûù±¾É϶¼»á»ùÓÚ Kubernetes API È¥¹¹½¨¡£

Kubernetes ¸ø¿ª·¢Õß´øÀ´Á˺ܶàʵÓõÄÌØÐÔ£¬±ÈÈçÒ»ÖÂÐÔ¡¢¿ÉÀ©Õ¹ÐÔ¡¢×ÔÎÒÐÞ¸´µÄ¹¦ÄÜ¡£Ò»ÖÂÐÔÊÇÖ¸ÔÚ Kubernetes ÉϹ¹½¨µÄÓ¦ÓÿÉÒÔÎÞ·ìµÄǨÒƵ½Èκλ·¾³À²»ÂÛ¹«ÓÐÔÆ¡¢Ë½ÓÐÔÆ»¹ÊÇ¿çÔÆ¡£¿ÉÀ©Õ¹ÐÔÊÇÖ¸°Ñ Kubernetes µÄ²å¼þ»úÖÆÔËÓõ½Èκλ·¾³Àͨ¹ý Kubernetes ÕâЩ²å¼þ¶¼¿ÉÒÔʵÏÖ×Ô¶¨Ò廯¡£Kubernetes µÄ×ÔÎÒÐÞ¸´¹¦ÄÜ£¬°üÀ¨½¡¿µ¼ì²é¡¢¹ÊÕϵÄ×Ô¶¯»Ö¸´¡¢×Ô¶¯À©Õ¹µÈ»úÖÆ£¬ÕâЩ¶ÔÓÚϵͳÔËÐÐÖÁ¹ØÖØÒª¡£

Kubernetes µÄ¼Ü¹¹±È½Ï¼òµ¥£¬·ÖΪ Master ºÍ Node Á½²¿·Ö¡£

Master Ö÷Òª¸ºÔð¼¯ÈºµÄ״̬ά»¤£¬Ò²¸ø¼¯ÈºÌṩһ¸ö¶ÔÍâ·ÃÎʵÄÈë¿Ú£»

Node ¸ºÔðÔËÐÐÈÝÆ÷£¬ÎªÈÝÆ÷ÌṩһЩ±ØÒªµÄ»·¾³£¬±ÈÈç´æ´¢¡¢ÍøÂçµÈ¡£

Kubernetes ÔÚ Master Éϱر¸µÄ×é¼þÖ»ÓÐËĸö£¬ÔÚ Node Éϱر¸µÄ×é¼þ£¬³ýÁË Kubelet¡¢Kube-proxy£¬»¹ÓÐ Docker µÈ¡£¶øÆäËûËùÓеÄÒ»Çж¼ÊÇͨ¹ýÀ©Õ¹µÄ·½Ê½²¿Êðµ½¼¯ÈºÀ±ÈÈçÔÚ²¿ÊðÒ»¸ö¼¯ÈºÊ±£¬DNS ÊÇÒ»¸ö±ØÐèµÄ¹¦ÄÜ£¬µ«Õâ¸ö¹¦ÄÜÊÇÒÔÒ»¸öÈÝÆ÷µÄ·½Ê½²¿Êðµ½¼¯ÈºÀï¡£

ÓÉÓÚ Kubernetes ¼Ü¹¹·Ç³£¼òµ¥¡£Òò´ËËüÓÐһЩÌرðµÄºÃ´¦£¬¾ÍÊÇ¿ÉÒÔÔËÓõ½ DevOps Á÷Ë®ÏßÀïÃæÀ´¡£ÒÔ³ÖÐø¼¯³ÉΪÀý£¬ÔÚ°æ±¾Éý¼¶²âÊÔеÄÌØÐÔʱ£¬ÔÚ Kubernetes ֮ǰ¿ÉÄÜҪͨ¹ý IPM °ü¹ÜÀíÕâЩÈí¼þ£¬µ±Éý¼¶ IPM °üʱ£¬ÓпÉÄܲúÉú³åÍ»¡£¶øÔÚ Kubernetes ÖУ¬Í¨¹ý°Ñ IPM °ü·Åµ½Ã¿Ò»¸öÈÝÆ÷À±ÜÃâÈí¼þ°üµÄ³åÍ»ÎÊÌâ¡£Èç¹û°Ñÿ¸öÓ¦ÓóÌÐòËùÒÀÀµµÄ¶«Î÷¶¼·Åµ½ÁËÈÝÆ÷ÀïÃ棬ӦÓóÌÐòÔÚ²»Í¬»·¾³Àï¾Í¿ÉÒÔºÜÈÝÒ×±£³ÖÒ»Ö¡£

ÔÚ DevOps Àï¼à¿ØϵͳºÜ¹Ø¼ü£¬¶øÔÚ Kubernetes ÖУ¬Í¨¹ýÒ»¸ö Pod µÄ·½Ê½ÔËÐÐÈÝÆ÷£¬Ó¦ÓóÌÐò¿ÉÒÔ²¿ÊðÔÚ Pod µÄÒ»¸öÈÝÆ÷ÀÆäËûµÄÈÝÆ÷¿ÉÒÔÓÃÔÚ¼à¿ØÀï¡£

ÔÚ DevOps Öо­³£ÐèҪƵ·±µØ·¢²¼¡¢±ä¸üϵͳ£¬·¢ÏÖÎÊÌâʱÐèÒª»Ø¹ö£¬¶øÔÚƵ·±µÄ·¢²¼ºÍ»Ø¹öʱ£¬ÐèÒªÓÐÒ»¸öϵͳȥ¹ÜÀíÕâЩ·¢²¼µÄÀúÊ·ÉúÃüÖÜÆÚ£¬ÔÚ·¢ÏÖÎÊÌâʱ²Å¿ÉÒԻعö»ØÀ´¡£¶ÔÓÚϵͳÀ´Ëµ£¬ÒªÇóËü·¢²¼µÄ¹ý³ÌÖв»ÄÜÓ°ÏìÓ¦ÓóÌÐò¶ÔÍâÕý³£·ÃÎÊ¡£ÔÚ Kubernetes ÖÐÒѾ­ÓÐÁËÔ­ÉúµÄ»úÖÆ£¬±ÈÈçÓà Service ºÍ Deployment À´Íê³ÉÕâ¸ö¹¦ÄÜ£¬Service ¿ÉÒÔÌṩһ¸ö¶ÔÍâ·ÃÎʵÄÈë¿Ú£¬×Ô¶¯×öºÃ¸ºÔؾùºâ£»Deployment ¸ºÔð¹ÜÀíºÃÕâЩ¸±±¾¡£Èç¹ûÐèÒªÉý¼¶£¬Í¨¹ý¹ö¶¯Éý¼¶µÄ·½Ê½È¥²¿Êð¡£

2. »ùÓÚ Kubernetes µÄ DevOps

DevOps ÊÇ°ÑÈËÔ±Á÷³Ì¡¢²úÆ·½øÐнáºÏ£¬¸øÓû§Ìṩ³ÖÐø¼Û¸ñµÄÒ»¸ö¹ý³Ì£¬Õâ¸ö¹ý³Ì¼ÈÉæ¼°µ½ÈËÔ±¡¢¹ý³Ì£¬Ò²Éæ¼°µ½²úÆ·¡£DevOps ×îÖÕÄ¿µÄÊǸø¿Í»§Ìṩ³ÖÐø½»¸¶µÄ¼ÛÖµ£¬Á÷³Ì°üÀ¨£º²úÆ·µÄ¹æ»®¸ú×Ù¡¢Èí¼þ¿ª·¢¡¢¹¹½¨²âÊÔ¡¢²úÆ·²¿Êð¡¢ÔËά¡¢¼à¿ØºÍÓÅ»¯£¬²¢Í¨¹ýÒ»¸öÁ÷Ë®Ïߵķ½Ê½´®ÁªÆðÀ´¡£Òò´Ëͨ³£°Ñ DevOps ÕâЩÁ÷³ÌºÏ²¢ÆðÀ´³ÆΪһ¸ö DevOps µÄÁ÷Ë®Ïß¡£Õâ¸öÁ÷Ë®ÏߵĺËÐÄÄ¿±ê£¬¾ÍÊdzÖÐø¸øÓû§½»¸¶ÓмÛÖµµÄ²úÆ·¡£

Kubernetes ÈçºÎ·þÎñºÃ DevOps Á÷Ë®Ïߣ¿Kubernetes µÄºÃ´¦¾ÍÊÇ¿ÉÒ԰Ѳ»Í¬µÄ²úÆ·¡¢¹¤¾ß´®ÁªÆðÀ´¡£ÒÔ CI/CD Àï×î³£ÓÃµÄ Jenkins ΪÀý£ºÏÖÔÚÓÐÒ»¸ö Jenkins-x ÏîÄ¿£¬ÊµÏÖÁËÓë Kubernetes µÄ¼¯³É£¬ÀûÓà Kubernetes µÄ CI/CD ʵÏÖÁË×Ô¶¨ÒåµÄ¶ÒÏÖ£¬ÓÐÁËÕâЩ×ÊÔ´¶ÒÏÖ£¬¾Í¿ÉÒÔͨ¹ý Kubernetes µÄ API À´¶¨Òå CI/CD µÄ¹ý³Ì¡£

ÁíÍâÈç¹ûʹÓà Kubernetes ¹¹½¨Õû¸öÁ÷Ë®Ïߣ¬ÔÚ¼à¿ØµÄʱºò¾Í¿ÉÒÔͬÑùÑ¡Ôñ Kubernetes Éú̬֮ÖеÄÏîÄ¿£¬±ÈÈç¿ÉÒÔÖ±½Ó´Ó Prometheus Àï»ñµÃºÜ¶àÖ¸±ê£¬È¥¹¹½¨ÏëÒªµÄ¼à¿Ø¸æ¾¯£¬ÒÔ¼°ºóÐøµÄ¶ÔÕû¸ö²úÆ·µÄÓÅ»¯ÒÀ¾Ý¡£»ùÓÚÕâЩ¹¤¾ß£¬¾Í¿ÉÒÔ¹¹½¨Ò»¸ö DevOps µÄÁ÷Ë®Ïß¡£

Ò»¸ö±È½ÏµäÐ굀 DevOps µÄÁ÷Ë®Ïß¹ý³ÌÊÇ£ºÏîÄ¿¿ªÊ¼¿ª·¢Ê±£¬Óà VS Code ¿ª·¢´úÂ룬Ȼºó°Ñ´úÂëÍÆË͵½ GitLab Àï´æ´¢£¬Í¨¹ý GitLab µÄ hook ʹ Jenkins Ö´ÐÐһЩ CI µÄ¹ý³Ì£¬±ÈÈç×öһЩµ¥Ôª²âÊÔ£¬¹¹½¨ Docker image£¬ÔÙ°ÑÕâ¸ö Docker image µ÷Óà helm ²¿Ê𵽿ª·¢»·¾³»ò²âÊÔ»·¾³ÖС£ÔÚ²âÊÔ»·¾³Àïͨ¹ý Jenkins ´¥·¢Ò»¸ö¼¯³É²âÊԵŦÄÜ£¬Íê³Éºó¾Í¿ÉÒÔ°ÑËü²¿Êðµ½Éú²ú»·¾³Àͨ¹ý Kubernetes addon µÄ·½Ê½£¬°Ñ Prometheus¡¢Grafana µÈ¼à¿Ø×é¼þ²¿Êðµ½¼¯ÈºÀ¾ÍʵÏÖÁËÒ»ÕûÌ×´Ó CI µ½ CD µÄ¼à¿Ø¹ý³Ì¡£

3. »ùÓÚ AKS µÄ Devops

AKS ÊÇ Azure ÌṩµÄÒ»¸öÍÐ¹ÜµÄ Kubernetes ·þÎñ£¬ÒòΪºÜ¶àÈËÔÚ½Ó´¥ Kubernetes ʱ·¢ÏÖËü×î´óµÄÍ´µãÊÇ Kubernetes µÄ°²×°²¿ÊðºÍά»¤Ì«Âé·³¡£Kubernetes ·¢²¼Ìرð¿ì£¬ÔÚÉý¼¶µÄ¹ý³ÌÖкÜÈÝÒ׳öÏÖ¸÷ÖÖÎÊÌ⣬¶ø AKS µÄ³öÏÖ¿ÉÒÔ½â¾öÕâЩÎÊÌâ¡£

ÐèҪעÒâµÄÊÇ£¬AKS Ö»ÊÇÌṩÁËÒ»¸öÍÐ¹ÜµÄ Kubernetes ·þÎñ£¬Ò²¾ÍÊÇËüÖ»ÌṩÁËÒ»¸ö K8s µÄ¼¯Èº£¬¶øΪÁËÔËÐÐÕâ¸ö¼¯Èº£¬»¹ÐèÒªÆäËû¶«Î÷£¬±ÈÈçÒª¿¼ÂÇ Docker image Òª´æÔÚÄÄÀïµÄÎÊÌâ¡£ACI ÌṩÁË¿çµØÓò×Ô¶¯¸´ÖƵŦÄÜ£¬Òò´Ë Docker image Ö»Òª´æµ½ ACI À¾Í¿ÉÒÔÔÚ²»Í¬µÄ Image ÀïʹÓá£

ÁíÍâÔÚ DevOps µÄÁ÷Ë®ÏßÀïÖ´ÐÐÈÎÎñʱ£¬ÕâЩÈÎÎñ¶¼ÀàËÆ Kubernetes µÄÒ»¸ö Job£¬±ÈÈçÔÚ³ÖÐø¼¯³ÉÀï×öÒ»¸öµ¥Ôª²âÊÔ£¬Õâ¸öµ¥Ôª²âÊÔ¿ÉÄÜÔËÐкܶÌʱ¼ä¾Í½áÊøÁË£¬µ«Èç¹ûÓà AKS£¬»òÕßͨ¹ýÆäËû²úÆ·µÄ Kubernetes ¼¯ÈºÀ´¹ÜÀíÕâÌ× DevOps Á÷³Ì£¬ÒªÓÅÏȱ£Ö¤×î´óµÄ Job ÊýÁ¿Ê±£¬Ëü²ÅÄܹ»Õý³£µÄÔËÐС£µ«ÊÇÕâ»áÔì³ÉÒ»¶¨µÄ×ÊÔ´ÀË·Ñ¡£

ACI ÊÇÒ»ÖÖÎÞ·þÎñÆ÷»¯µÄÈÝÆ÷½â¾ö·½°¸£¬Óû§ÎÞÐè¹ÜÀíµ×²ã·þÎñÆ÷£¬Ö»ÐèÒªµ÷ÓÃËüµÄ API °ÑÒ»¸öÈÝÆ÷ÔËÐÐÆðÀ´¼´¿É¡£ÁíÍâÈç¹ûÔËÐеijÌÐò»¹ÓÐһЩÊý¾ÝÒª´æ´¢£¬Èç¹ûÒª·ÃÎÊÊý¾Ý¿â£¬¾ÍÐèÒªÓà cosmosDB µÈ·þÎñ£¬¶øËüÃÇÒѾ­¸ú AKS¡¢Kubernetes ÓÐÁ˺ܺõļ¯³É£¬ÕâЩ·þÎñ¿ÉÒԺܷ½±ãµØÔÚ Azure ÉÏʹÓá£

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4. DevOps µÄÌôÕ½

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