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<!doctype html> < html lang = en class = no-js > < head > < meta charset = utf-8 > < meta name = viewport content = "width=device-width,initial-scale=1" > < link href = https://kubernetes.github.io/ingress-nginx/examples/customization/ssl-dh-param/ rel = canonical > < link href = ../external-auth-headers/ rel = prev > < link href = ../sysctl/ rel = next > < link rel = icon href = ../../../assets/images/favicon.png > < meta name = generator content = "mkdocs-1.5.3, mkdocs-material-9.4.5" > < title > Custom DH parameters for perfect forward secrecy - Ingress-Nginx Controller< / title > < link rel = stylesheet href = ../../../assets/stylesheets/main.6a10b989.min.css > < link rel = stylesheet href = ../../../assets/stylesheets/palette.356b1318.min.css > < link rel = preconnect href = https://fonts.gstatic.com crossorigin > < link rel = stylesheet href = "https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback" > < style > : root { --md-text-font : "Roboto" ; --md-code-font : "Roboto Mono" } < / style > < link rel = stylesheet href = ../../../extra.css > < script > _ _md _scope = new URL ( "../../.." , location ) , _ _md _hash = e => [ ... e ] . reduce ( ( e , _ ) => ( e << 5 ) - e + _ . charCodeAt ( 0 ) , 0 ) , _ _md _get = ( e , _ = localStorage , t = _ _md _scope ) => JSON . parse ( _ . getItem ( t . pathname + "." + e ) ) , _ _md _set = ( e , _ , t = localStorage , a = _ _md _scope ) => { try { t . setItem ( a . pathname + "." + e , JSON . stringify ( _ ) ) } catch ( e ) { } } < / script > < / head > < body dir = ltr data-md-color-scheme = default data-md-color-primary = teal data-md-color-accent = green > < input class = md-toggle data-md-toggle = drawer type = checkbox id = __drawer autocomplete = off > < input class = md-toggle data-md-toggle = search type = checkbox id = __search autocomplete = off > < label class = md-overlay for = __drawer > < / label > < div data-md-component = skip > < a href = #custom-dh-parameters-for-perfect-forward-secrecy class = md-skip > Skip to content < / a > < / div > < div data-md-component = announce > < / div > < header class = "md-header md-header--shadow md-header--lifted" data-md-component = header > < nav class = "md-header__inner md-grid" aria-label = Header > < a href = ../../.. title = "Ingress-Nginx Controller" class = "md-header__button md-logo" aria-label = "Ingress-Nginx Controller" data-md-component = logo > < svg xmlns = http://www.w3.org/2000/svg viewbox = "0 0 24 24" > < path d = "M12 8a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3 3 3 0 0 0 3 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54Z" / > < / svg > < / a > < label class = "md-header__button md-icon" for = __drawer > < svg xmlns = http://www.w3.org/2000/svg viewbox = "0 0 24 24" > < path d = "M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z" / > < / svg > < / label > < div class = md-header__title data-md-component = header-title > < div class = md-header__ellipsis > < div class = md-header__topic > < span class = md-ellipsis > Ingress-Nginx Controller < / span > < / div > < div class = md-header__topic data-md-component = header-topic > < span class = md-ellipsis > Custom DH parameters for perfect forward secrecy < / span > < / div > < / div > < / div > < label class = "md-header__button md-icon" for = __search > < svg xmlns = http://www.w3.org/2000/svg viewbox = "0 0 24 24" > < path d = "M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z" / > < / svg > < / label > < div class = md-search data-md-component = search role = dialog > < label class = md-search__overlay for = __search > < / label > < div class = md-search__inner role = search > < form class = md-search__form name = search > < input type = text class = md-search__input name = query aria-label = Search placeholder = Search autocapitalize = off autocorrect = off autocomplete = off spellcheck = false data-md-component = search-query required > < label class = "md-search__icon md-icon" for = __search > < svg xmlns = http://www.w3.org/2000/svg viewbox = "0 0 24 24" > < path d = "M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z" / > < / svg > < svg xmlns = http://www.w3.org/2000/svg viewbox = "0 0 24 24" > < path d = "M20 11v2H8l5 . 5 5 . 5-1 . 42 1 . 42L4 . 16 12l7 . 92
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< span class = go > apiVersion: v1< / span >
< span class = go > data:< / span >
< span class = go > ssl-dh-param: " ingress-nginx/lb-dhparam" < / span >
< span class = go > kind: ConfigMap< / span >
< span class = go > metadata:< / span >
< span class = go > name: ingress-nginx-controller< / span >
< span class = go > namespace: ingress-nginx< / span >
< span class = go > labels:< / span >
< span class = go > app.kubernetes.io/name: ingress-nginx< / span >
< span class = go > app.kubernetes.io/part-of: ingress-nginx< / span >
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< / code > < / pre > < / div > < div class = highlight > < pre > < span > < / span > < code > < span class = gp > $ < / span > kubectl< span class = w > < / span > create< span class = w > < / span > -f< span class = w > < / span > configmap.yaml
< / code > < / pre > < / div > < h2 id = custom-dh-parameters-secret > Custom DH parameters secret< a class = headerlink href = #custom-dh-parameters-secret title = "Permanent link" > ¶< / a > < / h2 > < div class = highlight > < pre > < span > < / span > < code > < span class = gp > $ < / span > openssl< span class = w > < / span > dhparam< span class = w > < / span > < span class = m > 4096< / span > < span class = w > < / span > < span class = m > 2< / span > > < span class = w > < / span > /dev/null< span class = w > < / span > < span class = p > |< / span > < span class = w > < / span > base64
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< span class = go > LS0tLS1CRUdJTiBESCBQQVJBTUVURVJ...< / span >
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< / code > < / pre > < / div > < div class = highlight > < pre > < span > < / span > < code > < span class = gp > $ < / span > cat< span class = w > < / span > ssl-dh-param.yaml
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< span class = go > apiVersion: v1< / span >
< span class = go > data:< / span >
< span class = go > dhparam.pem: " LS0tLS1CRUdJTiBESCBQQVJBTUVURVJ..." < / span >
< span class = go > kind: Secret< / span >
< span class = go > metadata:< / span >
< span class = go > name: lb-dhparam< / span >
< span class = go > namespace: ingress-nginx< / span >
< span class = go > labels:< / span >
< span class = go > app.kubernetes.io/name: ingress-nginx< / span >
< span class = go > app.kubernetes.io/part-of: ingress-nginx< / span >
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< / code > < / pre > < / div > < div class = highlight > < pre > < span > < / span > < code > < span class = gp > $ < / span > kubectl< span class = w > < / span > create< span class = w > < / span > -f< span class = w > < / span > ssl-dh-param.yaml
< / code > < / pre > < / div > < h2 id = test > Test< a class = headerlink href = #test title = "Permanent link" > ¶< / a > < / h2 > < p > Check the contents of the configmap is present in the nginx.conf file using: < div class = highlight > < pre > < span > < / span > < code > < span class = gp > $ < / span > kubectl< span class = w > < / span > < span class = nb > exec< / span > < span class = w > < / span > ingress-nginx-controller-873061567-4n3k2< span class = w > < / span > -n< span class = w > < / span > kube-system< span class = w > < / span > --< span class = w > < / span > cat< span class = w > < / span > /etc/nginx/nginx.conf
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