nginx/nginx · error

NGX_LOG_WARN

NGX_LOG_WARN

Error message

load balancing method redefined

What it means

Error "load balancing method redefined" thrown in nginx/nginx.

Source

Thrown at src/stream/ngx_stream_upstream_hash_module.c:730

    ngx_stream_upstream_srv_conf_t      *uscf;
    ngx_stream_compile_complex_value_t   ccv;

    value = cf->args->elts;

    ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));

    ccv.cf = cf;
    ccv.value = &value[1];
    ccv.complex_value = &hcf->key;

    if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
        return NGX_CONF_ERROR;
    }

    uscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_upstream_module);

    if (uscf->peer.init_upstream) {
        ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
                           "load balancing method redefined");
    }

    uscf->flags = NGX_STREAM_UPSTREAM_CREATE
                  |NGX_STREAM_UPSTREAM_MODIFY
                  |NGX_STREAM_UPSTREAM_WEIGHT
                  |NGX_STREAM_UPSTREAM_MAX_CONNS
                  |NGX_STREAM_UPSTREAM_MAX_FAILS
                  |NGX_STREAM_UPSTREAM_FAIL_TIMEOUT
                  |NGX_STREAM_UPSTREAM_DOWN;

    if (cf->args->nelts == 2) {
        uscf->peer.init_upstream = ngx_stream_upstream_init_hash;

    } else if (ngx_strcmp(value[2].data, "consistent") == 0) {
        uscf->peer.init_upstream = ngx_stream_upstream_init_chash;

    } else {

View on GitHub (pinned to 3f6f7824d4)

When it happens

Trigger: Thrown at src/stream/ngx_stream_upstream_hash_module.c:730 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nginx/nginx@3f6f7824d4 (2026-08-22). Data as JSON: /api/errors/eaad197d9b043559. Report an issue: GitHub.