server\u00eb<\/a> 503):<\/p>\n
K\u00ebtu \u00ebsht\u00eb si do t\u00eb duket nj\u00eb screenshot i komand\u00ebs curl t\u00eb ekzekutuar n\u00eb cik\u00ebl pasi ta aktivizojm\u00eb k\u00ebt\u00eb rregull p\u00ebr t\u00eb simuluar d\u00ebshtimet. Si\u00e7 shohim, gjysma e k\u00ebrkesave kthejn\u00eb gabim 503, pavar\u00ebsisht nga pod-i \u2013 v1 ose v2 \u2013 ku ato d\u00ebrgohen:<\/p>\n
Shtojm\u00eb vonesa artificiale<\/h3>\n \nGabimet artificiale 503 ndihmojn\u00eb p\u00ebr t\u00eb testuar sistemin p\u00ebr q\u00ebndrushm\u00ebrin\u00eb ndaj d\u00ebshtimeve, por aft\u00ebsia p\u00ebr t\u00eb parashikuar dhe trajtuar vonesat duhet t'ju impresionoj\u00eb edhe m\u00eb shum\u00eb. Vonesat n\u00eb realitet ndodhin m\u00eb shpesh se d\u00ebshtimet. Nj\u00eb mikrosh\u00ebrbim i ngadalsh\u00ebm \u00ebsht\u00eb kancer, nga i cili vuan i gjith\u00eb sistemi. Me ndihm\u00ebn e Istio, mund t\u00eb testoni kodin q\u00eb lidhet me trajtimin e vonesave, pa e ndryshuar at\u00eb. Fillimisht, ne do t\u00eb tregojm\u00eb se si ta b\u00ebjm\u00eb k\u00ebt\u00eb n\u00eb rastin e vonesave artificiale t\u00eb rrjetit.<\/p>\n
Vini re se pas nj\u00eb testimi t\u00eb till\u00eb, mund t'ju nevojitet (ose do t\u00eb d\u00ebshironit) t\u00eb p\u00ebrmir\u00ebsoni kodin tuaj. Lajmi i mir\u00eb k\u00ebtu \u00ebsht\u00eb se n\u00eb k\u00ebt\u00eb rast do t\u00eb veproni proaktivisht dhe jo reaktivisht. Ky \u00ebsht\u00eb cikli i duhur i zhvillimit: kodim \u2013 testim \u2013 feedback \u2013 kodim \u2013 testim\u2026<\/p>\n
K\u00ebtu \u00ebsht\u00eb si duket rregulli, i cili... Megjithat\u00eb, e dini \u00e7far\u00eb? Istio \u00ebsht\u00eb kaq i thjesht\u00eb, dhe ky skedar yaml \u00ebsht\u00eb kaq i qart\u00eb, sa \u00e7do gj\u00eb n\u00eb k\u00ebt\u00eb shembull flet p\u00ebr vete, thjesht shikoni:<\/p>\n
T\u00eb mos heqim dor\u00eb dhe t\u00eb mos dor\u00ebzohemi<\/h3>\n \nNj\u00eb funksion tjet\u00ebr i dobish\u00ebm p\u00ebr inxhinierin\u00eb e kaosit n\u00eb Istio \u00ebsht\u00eb p\u00ebrs\u00ebritja e k\u00ebrkesave ndaj sh\u00ebrbimit nj\u00eb num\u00ebr t\u00eb caktuar her\u00ebsh. Q\u00ebllimi k\u00ebtu \u00ebsht\u00eb t\u00eb mos ndalojm\u00eb p\u00ebrpjekjet kur k\u00ebrkesa e par\u00eb p\u00ebrfundon me nj\u00eb gabim 503 \u2013 dhe at\u00ebher\u00eb, ndoshta, n\u00eb her\u00ebn e N-t\u00eb do t\u00eb kemi fat. Mund t\u00eb jet\u00eb q\u00eb sh\u00ebrbimi thjesht ka qen\u00eb n\u00eb gjum\u00eb p\u00ebr nj\u00eb arsye apo nj\u00eb tjet\u00ebr. Po, arsyeja duhet t\u00eb zbulohet dhe t\u00eb eliminohet. Por kjo \u00ebsht\u00eb p\u00ebr m\u00eb von\u00eb, nd\u00ebrsa tani ne do t\u00eb p\u00ebrpiqemi t\u00eb b\u00ebjm\u00eb q\u00eb sistemi t\u00eb vazhdoj\u00eb t\u00eb punoj\u00eb.<\/p>\n
Pra, ne duam q\u00eb sh\u00ebrbimi her\u00eb pas here t\u00eb jap\u00eb nj\u00eb gabim 503, dhe Istio pas k\u00ebsaj t\u00eb provoj\u00eb p\u00ebrs\u00ebri t\u00eb lidhet me t\u00eb. Dhe k\u00ebtu na nevojitet nj\u00eb m\u00ebnyr\u00eb p\u00ebr t\u00eb gjeneruar gabimin 503, pa prekur kodin e vet...<\/p>\n
Stop, prit! Ne sapo e b\u00ebm\u00eb k\u00ebt\u00eb.<\/p>\n
Ky skedar do ta b\u00ebj\u00eb q\u00eb sh\u00ebrbimi recommendation-v2 n\u00eb gjysm\u00ebn e rasteve t\u00eb jap\u00eb nj\u00eb gabim 503:<\/p>\n
Po, ne e b\u00ebm\u00eb k\u00ebt\u00eb p\u00ebrs\u00ebri, pa prekur fare kodin. E vetmja gj\u00eb q\u00eb na duhej, ishin dy rregulla \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0446\u0438\u0458\u0435 t\u00eb Istio:<\/p>\n
Si t\u00eb mos e l\u00ebshosh p\u00ebrdoruesin ose shtat\u00eb nj\u00ebri t\u00eb pres\u00eb<\/h3>\n \nTani tani, do ta shohim situat\u00ebn nga nj\u00eb k\u00ebndv\u00ebshtrim t\u00eb ndryshuar dhe do t\u00eb shqyrtojm\u00eb skenarin ku nuk \u00ebsht\u00eb e nevojshme t\u00eb t\u00ebrhiqemi ose dor\u00ebzohemi vet\u00ebm p\u00ebr nj\u00eb koh\u00eb t\u00eb caktuar. Pas k\u00ebsaj, duhet thjesht t\u00eb ndalim p\u00ebrpjekjet p\u00ebr t\u00eb p\u00ebrpunuar k\u00ebrkes\u00ebn, n\u00eb m\u00ebnyr\u00eb q\u00eb t\u00eb mos i b\u00ebjm\u00eb t\u00eb gjith\u00eb t\u00eb presin p\u00ebr nj\u00eb sh\u00ebrbim t\u00eb ngadalt\u00eb. N\u00eb terma t\u00eb tjer\u00eb, nuk do ta mbrojm\u00eb pozitat e humbura, por do t\u00eb t\u00ebrhiqemi n\u00eb nj\u00eb linj\u00eb rezerv\u00eb, q\u00eb t\u00eb mos e d\u00ebshtojm\u00eb p\u00ebrdoruesin e sitit dhe t\u00eb mos e l\u00ebm\u00eb at\u00eb n\u00eb paqart\u00ebsi.<\/p>\n
N\u00eb Istio \u00ebsht\u00eb e mundur t\u00eb vendoset nj\u00eb kufi p\u00ebr koh\u00ebn e ekzekutimit t\u00eb k\u00ebrkes\u00ebs. N\u00ebse sh\u00ebrbimi e kalon k\u00ebt\u00eb kufi, kthehet nj\u00eb gabim 504 (Gateway Timeout) \u2013 p\u00ebrs\u00ebri, t\u00eb gjitha k\u00ebto b\u00ebhen p\u00ebrmes konfigurimit t\u00eb Istio. Por ne do t\u00eb duhet t\u00eb shtojm\u00eb nj\u00eb komand\u00eb sleep n\u00eb kodin burimor t\u00eb sh\u00ebrbimit (dhe pastaj, sigurisht, t\u00eb kryejm\u00eb rebuild dhe redeploy), p\u00ebr t\u00eb imituar nj\u00eb pun\u00eb t\u00eb ngadalt\u00eb t\u00eb sh\u00ebrbimit. Me keqardhje, ndryshe nuk do t'ia dalim.<\/p>\n
Pra, ne kemi inseruar nj\u00eb sleep prej tre sekondash n\u00eb kodin e sh\u00ebrbimit rekomandimi v2, kemi nd\u00ebrtuar p\u00ebrs\u00ebri imazhin p\u00ebrkat\u00ebs dhe kemi b\u00ebr\u00eb redeploy t\u00eb kontejnerit, tani do t\u00eb shtojm\u00eb kufizimin me an\u00eb t\u00eb rregullit t\u00eb ardhsh\u00ebm t\u00eb rrug\u00ebzgjidhjes Istio:<\/p>\n
Tani s\u00eb bashku<\/h3>\n \nShtimi i pak kaosit me an\u00eb t\u00eb Istio \u00ebsht\u00eb nj\u00eb m\u00ebnyr\u00eb e shk\u00eblqyer p\u00ebr t\u00eb testuar kodin tuaj dhe q\u00ebndrueshm\u00ebrin\u00eb e sistemit tuaj n\u00eb p\u00ebrgjith\u00ebsi. Shabllonet fallback, bulkhead dhe circuit breaker, mekanizmat p\u00ebr krijimin e d\u00ebshtimeve dhe vonesave artificiale, si dhe rikthimet dhe kufijt\u00eb e koh\u00ebs, do t\u00eb jen\u00eb shum\u00eb t\u00eb dobishme p\u00ebr nd\u00ebrtimin e sistemeve t\u00eb q\u00ebndrueshme n\u00eb cloud. N\u00eb kombinim me Kubernetes dhe Red Hat OpenShift, k\u00ebto mjete do t\u00eb ndihmojn\u00eb p\u00ebr t\u00eb p\u00ebrballuar t\u00eb ardhmen me siguri.habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"\u041f\u0440\u0438\u043d\u0446\u0438\u043f \u043d\u0435\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0413\u0435\u0439\u0437\u0435\u043d\u0431\u0435\u0440\u0433\u0430 \u0433\u043b\u0430\u0441\u0438\u0442, \u0447\u0442\u043e \u043d\u0435\u043b\u044c\u0437\u044f \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0438\u0437\u043c\u0435\u0440\u0438\u0442\u044c \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0438 \u0435\u0433\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c. \u0415\u0441\u043b\u0438 \u043e\u0431\u044a\u0435\u043a\u0442 \u0434\u0432\u0438\u0436\u0435\u0442\u0441\u044f, \u0442\u043e \u0443 \u043d\u0435\u0433\u043e \u043d\u0435\u0442 \u043c\u0435\u0441\u0442\u043e\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0410 \u0435\u0441\u043b\u0438 \u043c\u0435\u0441\u0442\u043e\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0435\u0441\u0442\u044c \u2013 \u0437\u043d\u0430\u0447\u0438\u0442 \u0443 \u043d\u0435\u0433\u043e \u043d\u0435\u0442 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438. \u0427\u0442\u043e \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f \u043c\u0438\u043a\u0440\u043e\u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432 \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 Red Hat OpenShift (\u0438 \u043f\u043e\u0434 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c Kubernetes), \u0442\u043e \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0441\u043e\u0444\u0442\u0443 \u0441 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u043c \u043a\u043e\u0434\u043e\u043c \u043e\u043d\u0438 \u043c\u043e\u0433\u0443\u0442 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0440\u0430\u043f\u043e\u0440\u0442\u043e\u0432\u0430\u0442\u044c \u043a\u0430\u043a […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-55700","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t
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